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SURVEY ECHOSOUNDER
HydroStar 4900
TECHNICAL HANDBOOK
ELAC Nautik communications
SURVEY ECHOSOUNDER
HydroStar 4900
TECHNICAL HANDBOOK
Part 1 to 3
TH 44 116 8002 E
EDITION: 23.10.2003
ISSUE: 001
L-3 Communications ELAC Nautik GmbH
Neufeldtstrasse, 24118 Kiel, Germany
Telephone: +49 431 883 0
Telefax: +49 431 883 496
ELAC Nautik communications
Software - Version L 2.8
The reproduction, distribution and utilisation of this document as well as the communication of
this contents to others without explicit authorisation is prohibited. Offenders will be held liable
for the payment of damages. All rights reserved in the event of the grant of a patent, utility mo-
del or design.
© L-3 Communications ELAC Nautik GmbH, Kiel 2003
CAUTION
When assembly is switched on and
transducer are activated
NO DIVER
is permitted under water
PREFACEThe Technical Handbook for the Survey Echosunder System
HydroStar 4900
Published by, L-3 Communications ELAC Nautik GmbH
Neufeldtstraße
24118 Kiel
Federal Republic of Germany
contains thje following parts:
PART 1: DESCRIPTION
PART 2: OPERATING INSTRUCTIONS
PART 3: MAINTENANCE AND ONBOARD SERVICE
and is available under the number 44 116 8002 E from L-3 Communications ELAC Nautik GmbH.
SURVEY ECHOSOUNDER HydroStar 4900
TH 44 116 8002 E Edition: 23.10.2003Issue: 001
PART 1
DESCRIPTION
SURVEY ECHOSOUNDER HydroStar 4900
TH 44 116 8002 E 1 Edition: 23.10.2003Issue: 001
LIST OF CONTENTS1 GENERAL .................................................................................................................... 4
1.1 Fundamental Safety Instructions.................................................................................. 4
1.1.1 Transducer Installation Instruction ............................................................................... 5
1.1.2 Cable Length, Cable Routing, Operating Frequency ................................................... 6
1.1.3 Transducer Cable Specification ................................................................................... 8
1.2 General Information..................................................................................................... 9
1.2.1 System Designation ..................................................................................................... 9
1.2.2 Introduction.................................................................................................................. 9
1.2.3 Operating Options and Modes ..................................................................................... 9
1.3 System Components .................................................................................................... 10
1.3.1 Test Unit ....................................................................................................................... 10
1.4 Technical Data ............................................................................................................. 11
1.4.1 Electrical Data ............................................................................................................. 11
1.4.2 Transducer LSE 140 .................................................................................................... 15
1.4.3 Transducer LSE 179 .................................................................................................... 15
1.4.4 Mechanical Data........................................................................................................... 16
1.4.5 Environmental Data...................................................................................................... 16
1.4.6 NMEA Interface for Survey Echosounder SEB 4900 .................................................. 16
1.4.7 GLL Geographic Position - Latitude/Longitude ............................................................ 17
1.4.8 Global Positioning System Fix Data ............................................................................. 17
1.4.9 VTG Course over Ground and ground speed ............................................................. 18
1.4.10 ZDA Time and Date...................................................................................................... 18
1.4.11 Output:.......................................................................................................................... 19
1.4.12 DPT Depth.................................................................................................................... 19
1.4.13 DBT Depth Below transducer....................................................................................... 20
1.4.14 ELACSDS Depth information in proprietary format ...................................................... 20
1.5 Technical Description ................................................................................................... 22
1.5.1 Mechanical design........................................................................................................ 22
1.5.2 Transmit, Receive and Control Unit SEB 4900 ............................................................ 22
1.5.4 Connection Box AK 82 ................................................................................................. 23
1.5.5 Junction Box................................................................................................................. 24
1.5.6 Transducer LSE 140 .................................................................................................... 24
1.5.7 Transducer LSE 179 .................................................................................................... 25
1.6 Echosounding Principle................................................................................................ 26
SURVEY ECHOSOUNDER HydroStar 4900
TH 44 116 8002 E 2 Edition: 23.10.2003Issue: 001
1.6.1 Sound Velocity ............................................................................................................. 26
1.6.2 Formation of Echoes by Reflection .............................................................................. 28
1.6.3 Noise Level................................................................................................................... 30
1.6.4 System Frequency and Its Effect ................................................................................ 31
1.6.5 Influences of Sea Bed Contour and Ship's Movement ................................................. 32
1.7 Function........................................................................................................................ 34
1.7.1 Special Characteristics of the Survey Echosounder HydroStar 4900 ......................... 34
1.7.2 Navigation Mode ( NAV ).............................................................................................. 34
1.7.3 WATER DEPTH- Mode (DBK) ..................................................................................... 35
1.7.4 WATER DEPTH- Mode ( DBS) ................................................................................... 36
1.8 Method of Operation..................................................................................................... 38
1.8.1 Transmitter .................................................................................................................. 38
1.8.2 Depth Computer .......................................................................................................... 38
1.8.3 Control Computer ......................................................................................................... 39
SURVEY ECHOSOUNDER HydroStar 4900
TH 44 116 8002 E 3 Edition: 23.10.2003Issue: 001
LIST OF FIGURES Figure 1-1 Transducer Connection.......................................................................................... 8
Figure 1-2 System Overview................................................................................................... 10
Figure 1-3 Transmit, Receive and Control Unit SEB 4900....................................................... 22
Figure 1-4 Connection Box AK 54........................................................................................... 23
Figure 1-5 Connection Box AK 82........................................................................................... 23
Figure 1-6 Junction Box .......................................................................................................... 24
Figure 1-7 Transducer LSE 140.............................................................................................. 24
Figure 1-8 Transducer LSE 179.............................................................................................. 25
Figure 1-9 Sound Velocity Diagram ......................................................................................... 27
Figure 1-10 Double Echoes..................................................................................................... 29
Figure 1-11 Double Echo - Presentation ................................................................................. 30
Figure 1-12 Flat Sea Bed ........................................................................................................ 32
Figure 1-13 Sloping Sea Bed .................................................................................................. 33
Figure 1-14 Undulating Sea Bed............................................................................................. 33
Figure 1-15 Presentation NAV - Mode .................................................................................... 35
Figure 1-16 Presentation of Water Depth ( DBK )................................................................... 36
Figure 1-17 Presentation of Water Depth ( DBS )................................................................... 37
Figure 1-18 Block Diagram HydroStar 4900 ........................................................................... 39
SURVEY ECHOSOUNDER HydroStar 4900
TH 44 116 8002 E 4 Edition: 23.10.2003Issue: 001
1 GENERAL
1.1 Fundamental Safety InstructionsGeneral remark to HydroStar 4900
Even with a carefully selected transducer position and proper installation, the function of hydroacou-
stic equipment can be impaired by turbulence, acoustic noise or aerated water.
As main causes, the following can be stated:
- Propeller(s) running reversed;
- Thruster(s) in operation, especially at low speed ahead;
- Engine noise, transferred to the transducer either by the hull structure or through the water, the
latter especially as bottom- reflection in shallow water.
- Losing sonar contact with the water at extremely bad weather, as a result of violent pitching.
- Hot water discharges from power plants;
- Rising cold water in several sea areas.
The HydroStar 4900 has been built in accordance with state of the art standards and recognised
safety regulations. Nevertheless, it may constitute a risk to life or limb of the user and or third parties,
or cause damage to the vessel and or other material property if the following rules are not complied
with.
The HydroStar 4900 must only be used in a technically flawless condition in accordance with it's de-
signated use and the instructions contained within this Technical Handbook and only by safety
conscious persons who are fully aware of the risks involved in operating such a system.
The HydroStar 4900 is designed as a navigational and survey echosounder. Using the system for
purposes other than this is considered contrary to it's designated use. The manufacturer can not be
held responsible for any damage resulting from such misuse. The risk of such misuse lies entirely
with the user.
Personnel entrusted with operating the system must have read the Technical Handbook, in particular
the section on safety measures before and during operation. Reading these instructions after starting
the system is too late. This applies especially to persons who only work with the system occasionally,
e.g. during setting up or maintenance.
Always observe the maintenance/inspection intervals laid down in this Technical Handbook.
Use only spare parts authorised by the manufacturer and never replace defective fuses by those of
any other rating than specified.
Switch the system OFF immediately if trouble occurs with the electrical system.
Work on the system must only be carried out by a qualified technician or a specially trained person
working under the supervision of such a technician. Electrical engineering regulations must be ob-
served at all times.
SURVEY ECHOSOUNDER HydroStar 4900
TH 44 116 8002 E 5 Edition: 23.10.2003Issue: 001
Observe all safety instructions and warnings for operating and maintenance attached to the system.
Ensure that such safety instructions and warnings are always complete, visible and perfectly legible.
Never make any modifications, additions or conversions to the system without the manufacturers full
approval.
If the system is shut down for maintenance or repair, it must be secured against inadvertent switching
ON by isolating the system from the mains power supply and attaching a sign to the front plate of the
display and control unit stating that the unit must not be switched ON because maintenance or repair
work is being carried out.
Always check tighten any screwed connections, e.g. plugs, sockets and terminals, which may have
been loosened during maintenance or repair work.
Always dispose of replaced parts in accordance with local environmental regulations.
Check the system regularly for defective cables, connections etc.
Alterations within the SERVICES menu must only be made by trained persons. Altering setting within
this menu may lead to incorrect depth readings which in turn may lead to loss of life or limb.
Survey Echosounding Systems and remote indicators which detect and display the water depth from
a single momentary value per transmission pulse, e.g. digital and pointer displays, can display false
readings over a period of time. This is primarily valid in shallow water areas. For this reason, water
depths displayed in this manner must be compared with the graphic presentation at such intervals as
to guarantee the ship's safety.
1.1.1 Transducer Installation Instruction
1.1.1.1 Transducer LocatingThe performance of an echosounder is limited by the acoustical propagation of sound in water.
Mainly this is influenced by the transducer mounting place, the operational frequency and the
transducer efficiency.
The transducer mounting place is to select in such a way, that the transducer surface is free of air
bubbles and turbulence. Air bubbles and turbulence will reflect the sound energy so that no echoes
from the bottom will return.
That's why transducers in general have to be installed in ship's bow.
If the ship has a bow thruster, the transducer has to be mounted ahead of it. Otherwise the
turbulence caused by the thruster hole will inhibit echosounding operation.
While the bow thruster is operating, no echosounding is possible because of the propeller
rotation. On ships with bulbs the transducer must be mounted as far ahead as possible.
SURVEY ECHOSOUNDER HydroStar 4900
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Transducers mounted in ship's aft normally are limited in function during travelling, because
this area is very noisy. Due to engine noise, propeller rotation and air bubbles, the transdu-
cers are only efficient during low speed travelling.
An indication for that is the disappearing of echoes, digital reading will indicate surface
reverberation ( 1-1.5 m ) or "?".
While sailing only the bow transducer should be used.
1.1.2 Cable Length, Cable Routing, Operating FrequencyBoth the operating frequency and the length of cable between the echosounder and the
transducer influence the performance of echosounding.
General rules are:
At lower frequencies the influence of air bubbles and turbulence decreases, increased depth measu-
rements are possible, energy loss at longer cable length is minimised.
Higher frequencies are less sensitive against radiated water noise caused by the ships engine and
propeller rotation.
The transducer cable length is limited by the working frequency, as shown in the table.
TransducerType Frequency Electrical
PowerMaximum Cable
LengthMaximum
Waterdepth
LSE 179 12 kHz 2000 W 600 m (2x1,5mm2) 10000 m
LSE 131 30 kHz 1000 Watt 600 m (2x1,5mm2) 2200 m
LSE 132 30 kHz 450 Watt 600 m (2x1,5mm2) 1200 m
LSE 297 50 kHz 250 Watt 400 m (2x1,5mm2) 600 m
LSE 133 50 kHz 450 W 600 m (2x1,5mm2) 1100 m
LSE 148 100 kHz 450 Watt 200 m (2x1,5mm2) 350 m
LSE 313 200 kHz 250 Watt 150 m (2x1,5mm2) 250 m
LSE 135 200 kHz 250 Watt 150 m (2x1,5mm2) 250 m
LSE 135/ LSE 140 200 kHz 250 W 150 m (2x1,5mm2) 250 m
SURVEY ECHOSOUNDER HydroStar 4900
TH 44 116 8002 E 7 Edition: 23.10.2003Issue: 001
Critical point in cabling is the correct handling of the cable screens, especially for the transducer ca-
ble.
The cable screens have to be grounded only at one point: at the echosounder.
In all connection boxes the screens are slide and not connected to ground.
Dismantling has to be as short as possible.
The transducer cable should be fed through a steel pipe, directly welded on the transducer
housing, over the waterline (CWL) to the first junction box. At the end of the pipe a normal
cable gland should be set.
This way of transducer installation allows to replace the transducer without dry-docking, for no water
pressure is at the pipe's end, which is a great advantage.
Most classification organisation demand this installation type, due to higher ship's safety and it is the
actual standard installation.
If the first junction box is placed exceptional below the waterline, the full water pressure is at the cable
gland and transducers only can be replaced by dry-docking the ship.
From the first connection box to the echosounder three kinds of cable laying are mandatory
recommended:
- the cable is laid in a steel pipe
- a double-screened cable is used as transducer cable, the inner screen is one-side
connected to the echosounder's ground, the outer screen is both-side connected to the
ship's ground. (strongly recommended)
- the transducer cable has to be laid separately from other cables in a distance of
minimum 0.5 m.
Most important is not to lay single shielded cable in the vicinity of other cable.
NOTE: In any case shielded cable has to be used over the whole distance from the
transducer to the echosounder. All connection boxes must be metallic.
SURVEY ECHOSOUNDER HydroStar 4900
TH 44 116 8002 E 8 Edition: 23.10.2003Issue: 001
Figure 1-1 Transducer Connection
1.1.3 Transducer Cable SpecificationThe cable from the transducer connection box to the echosounder must be approved marine
cable according DIN 89158 or similar, like MGCG 2x1.5.
At least the requirement of a resistance <13 Ù/ km and a capacity of < 150 nF/ km must be
fulfilled.
For cable length longer than mentioned in the table the electrical power of the echosounder has to
be increased according to manufacturer's release.
SURVEY ECHOSOUNDER HydroStar 4900
TH 44 116 8002 E 9 Edition: 23.10.2003Issue: 001
1.2 General Information
1.2.1 System DesignationThe system described with in this Technical Handbook (TH) carries the designation:
SURVEY ECHOSOUNDER
HydroStar 4900
1.2.2 IntroductionThe modular ELAC Survey Echosounder HydroStar 4900 is the new generation deep sea echosoun-
der, capable of measuring up to 10.000 m water depth, a state-of-the-art tool for precise and reliable
survey tasks. The unit is available as stand-alone system or can be integrated in a 19''-rack, also al-
lowing integration into already existing navigation- or survey systems.
The HydroStar 4900 complies with IHO accuracy regulations for survey echosounders.
1.2.3 Operating Options and ModesThe Survey Echosounder HydroStar 4900 operates as a vertical echo-sounder in accordance with
the Impulse - Echo measurement principle.
The system is equipped with two LF transducer for vertical echo-sounding.
The main functions of the system are:
Presentation of the sea bed echo on a colour display, with simultaneous depth indication as a digital
value.
Enlarged presentation of the digital value on the display.
Built-in Test Equipment (BITE)
OffLine -Test
The display presentation can be printed out at any time using a printer.
The depth information can also be displayed on one display slave Display DAZ 25.
The conversion of transmission and reception signals from electrical to acoustic and acoustic to elec-
trical signals is carried out by the transducer.
SURVEY ECHOSOUNDER HydroStar 4900
TH 44 116 8002 E 10 Edition: 23.10.2003Issue: 001
1.3 System ComponentsThe Survey Echosounder HydroStar 4900 comprises the following components:
1 Transmit, Receive and Control Unit SEB 4900
2 Connection Box AK 82
3 Connection Box AK 54
4 Distribution Box
5 Transducer LSE 140
6 Transducer LSE 179
1.3.1 Test Unit7 EDI- DSTS- 4 Echo Simulator
8 Test Adapter Set
Figure 1-2 System Overview
Transmit, Receive
and
Control Unit
SEB 4900
Connection
Box
AK 54
Connection
Box AK82
LSE
179LSE
140
Conn. Box
SURVEY ECHOSOUNDER HydroStar 4900
TH 44 116 8002 E 11 Edition: 23.10.2003Issue: 001
1.4 Technical Data
1.4.1 Electrical DataPower supply : 88 to 264 VAC, 47 to 440 Hz
or 160 to 320 VDC
Power consumption : < 200 VA
System frequency : 12 kHz Low Frequency
: 200 kHz Standard frequency
Transmission power at 70 Ohm and 150 Ohm
* with 150 Ohm
Pulse lengths / ms
* only with LSE 179
Frequency [kHz] High power [W] Medium power [W] Low power [W]
12 2000* 46 1
2000 400 16 1
Range 12 kHz 200 kHz
m fms ft ms ms
0-10 0-6 0-30 --- 0,1
0-25 0-15 0-75 0,5 0,15
0-50 0-30 0-150 0,5 0,15
0-100 0-60 0-300 0,5 0,5
0-250 0-150 0-750 1,0 1,0
0-500 0-300 0-1500 1,0 10
0-1000 0-600 0-3000 10,0 ---
0-3000 0-1800 0-10000 20,0 ---
0-6000 0-3600 0-20000 20,0 ---
0-10000 0-6000 0-30000 100,0* ---
SURVEY ECHOSOUNDER HydroStar 4900
TH 44 116 8002 E 12 Edition: 23.10.2003Issue: 001
Soundings 12 kHz
Measurement Range
Soundings 200 kHz
Measurement Range
Pulse keying It is possible to trigger periodic.
m fms ft Sounding / min Resolution / m
I = 0-10 0 -6 0 -30 --- ---
II = 0 -25 0 -15 0 -75 240 0,01
III = 0 -50 0 -30 0 -150 240 0,1
IV = 0-100 0 -60 0 -300 200 0,1
V = 0 - 250 0 -150 0 -750 110 0,1
VI = 0 - 500 0 -300 0 -1500 54 1,0
VII = 0 -1000 0 -600 0 -3000 28 1,0
VIII = 0 - 3000 0 -1800 0 -10000 9 1,0
IX = 0 -6000 0 -3600 0 -20000 4,5 1,0
X = 0 -10000 0 -6000 0 -30000 3 1,0
m fms ft Sounding / min Resolution / m
I = 0-10 0 -6 0 -30 240 0,01
II = 0 -25 0 -15 0 -75 240 0,01
III = 0 -50 0 -30 0 -150 240 0,1
IV = 0-100 0 -60 0 -300 200 0,1
V = 0 - 250 0 -150 0 -750 110 0,1
VI = 0 - 500 0 -300 0 -1500 54 1,0
SURVEY ECHOSOUNDER HydroStar 4900
TH 44 116 8002 E 13 Edition: 23.10.2003Issue: 001
Measurement Ranges
The smallest measurable depth in range I=0.2 m ( 200 kHz).
The smallest measurable depth in range II= 1.0 m ( 12 kHz).
The smallest measurable depth in range V=10 m ( 200 kHz).
The smallest measurable depth in range X=30 m ( 12 kHz).
For reasons of safety, the digital display indicates the correct measured value at depths of up to 20%
over the end of range
The precision of the value measured is < ± 0.5 % of the relevant measurement range.
The value in measurement ranges I and II, is indicated down to centimetres. In the measurement ran-
ges III + IV, the values are indicated down to decimetres and in the ranges V to X only in metres.
Acoustic transmission level 12 kHz : 222 dB ± 2 dB rel 1 mPa, 1m ( 2000 W)
Acoustic transmission level 200 kHz : 213 dB ± 2 dB rel 1 mPa, 1m ( 200 W)
Reception sensitivity 12 kHz : 3,9 µV eff = - 98 dB ( rel. 1Veff)
Reception sensitivity 200 kHz : 24,5 µV eff = - 98 dB ( rel. 1Veff)
For echo detection at max. amplification ( without effective AGC / TVG)
Measurement range m m
12 kHz 200 kHz
Range I --- 0-10
Range II 0-25 0-25
Range III 0-50 0-50
Range IV 0-100 0-100
Range V 0-250 0-250
Range VI 0-500 0-500
Range VII 0-1000 ---
Range VIII 0-3000 ---
Range IX 0-6000 ---
Range X 0-10000 ---
SURVEY ECHOSOUNDER HydroStar 4900
TH 44 116 8002 E 14 Edition: 23.10.2003Issue: 001
Amplification control : Automatic, program controlled TVG and AGC through
processors in 128 steps of 1,25 dB, manual control is
possible, Manual control is in 160 steps, an alteration
of 1.0 dB per step is made. The system converts the
steps automatically to 1.25 dB.
Sound velocity (manual) : Can be set between 1400 and 1650 m/s in steps of
1 m/s. In the NAV- Mode, the sound velocity is fixed on
1500 m/s.
Sound velocity (Auto / optional) : Automatic control within a range of 1400 to 1650 m/s
at a precision of ± 0.1 m/s.
Transducer/Kiel compensation : Setting between 0 to 1999 cm
setting in steps of 1 cm possible.
Threshold : Adjustable in steps 0 to 10
Digital display : Depth indication: 4 digit
: Sound Velocity: 5 digit
Display Unit SEB 4900 : Display: 640 x 480 pixel
: Colour coding : 256 colours
: Brightness: dimmable in 32 steps.
Alarm function : Adjustable, rising and falling, in steps of 1 m.
: Visual alarm, depth display background turns red.
: Acoustic alarm, triggered automatically, can be swit-
ched OFF.
SURVEY ECHOSOUNDER HydroStar 4900
TH 44 116 8002 E 15 Edition: 23.10.2003Issue: 001
1.4.1.1 InterfacesAnalogue interfaces : Transducer
: LOG - input, analogue DC voltage,
0 to ± 10 VDC.
Digital interfaces : RS 422 for the digital slave display DAZ 25 with power
supply for max. 2 displays.
: Blanking signal for other systems, active for transmis-
sion trigger and echo expectancy window.
: Blanking signal from other systems, active for trans-
mission trigger.
: Transmission trigger from other systems, active for
transmission trigger.
: Trigger inhibitor from other systems, active for trans-
mission trigger inhibit.
: Standard printer, HP Laserjet (Centronics interface)
Delay for an external trigger
signal for the transmission trigger : 0 to 50 ms
1.4.1.2 MTBF / MTTRMTBF : > 6000 hours
MTTR : < 30 min. excluding the transducer
1.4.2 Transducer LSE 140Resonant frequency : 200 kHz
Transmission power : 250 W
Impedance : 70 Ohm
Directional characteristic : 10° total
Sounding Range : 500 m
1.4.3 Transducer LSE 179Resonant frequency : 15,5 kHz
Transmission power : 2000 W
Impedance : 150 Ohm
Directional characteristic : 12° total
Sounding Range : 10000 m
SURVEY ECHOSOUNDER HydroStar 4900
TH 44 116 8002 E 16 Edition: 23.10.2003Issue: 001
1.4.4 Mechanical Data
* without housing and shock- mounts
1.4.5 Environmental DataTemperature SEB 4900 : Operation : - 7 °C to + 55 °C
: Storage : -35 °C to +70 °C
Transducer LSE 140 : Operation : - 2,5 °C to +35 °C
: Storage : -35 °C to +70 °C
Transducer LSE 179 : Operation : - 2,5 °C to +35 °C
: Storage : -35 °C to +70 °C
1.4.6 NMEA Interface for Survey Echosounder SEB 4900
1.4.6.1 Technical IntroductionThis specification defines the electrical interface between external equipment and the Survey Echo-
sounder SEB 4900.
The purpose of the Survey Echosounder is to measure the depth of water below the ship's hull and
to transmit this information, in serial format, to external equipment. It is also possible to display posi-
tion data, speed and time information received from a navigation system in a serial format. The pro-
tocol based on NMEA 0183 vers. 2.2
1.4.6.2 Data TransmissionData is transmitted in serial asynchronous form in accordance with ANSI standards. The first bit is a
start bit and is followed by data bits, least significant-bit first. The following parameters are used:
Designation Height (mm) Width (mm) Depth (mm) Weight (kg)
Transmit, Receive and Control Unit SEB 4900 260 483 410 42,0*
Connection Box AK 54 183 180 96 4,0
Connection Box AK 82 300 200 115 6,0
Distribution Box 140 110 50 1,0
Transducer LSE 140 226 --- 116 5,6
Transducer LSE 179 558 --- 158 80,0
SURVEY ECHOSOUNDER HydroStar 4900
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Baud rate: 4800
Data bits: 8 (LSB first)
Parity: None
Stop bits: one
1.4.6.3 Input DATAA navigation system can be connected to this interface so that the ship's co-ordinates are displayed
by the SEB 4900. The system will accept and evaluate data sentences in NMEA 0183, Version 2.20
or higher, GLL, GGA, ZDA and VTG formats, as follows:
1.4.7 GLL Geographic Position - Latitude/LongitudeLatitude and Longitude of vessel position, time of position fix and status.
Example:
Data are being received from a Global Positioning System (GP)
Latitude = 54°20.549'N
Longitude = 10°07.192'E
UTC = 20:15:33.25
Checksum (only example)
$GPGLL,5420.549,N,01007.192,E,201533.25,A*02<CR><LF>
The Survey Echosounder shows on the display the actual Longitude and Latitude. Time and date can
be synchronised by actual data.
1.4.8 Global Positioning System Fix DataTime, position and fixed related data for a GPS receiver.
$GPGGA,hhmmss.ss,llll.ll,a1,yyyyy.yy,a2,x,xx,x.x,x.x,M,x.x,M,x.x,xxxx*hh<CR><LF>
UTC of position = hhmmss.ss
$--GLL IIII.II,a yyyyy.yy,a hhmmss.ss A hh, , , , * <CR><LF>
ChecksumStatus : A =Data ValidUTC at this positionLongitude, E/WLatitude, N/STalker Identification
SURVEY ECHOSOUNDER HydroStar 4900
TH 44 116 8002 E 18 Edition: 23.10.2003Issue: 001
Latitude = llll.ll, N/S: a1
Longitude = yyyyy.yy, E/W: a2
Checksum =hh
The other information are not used by SEB 4900.
Example:
UTC of position = 12:04:34
Latitude = 54°23.01'
Longitude = 10°12.56'
$GPGGA,120434.00,5423.01,N,001012.56,E,..........*EA<CR><LF>
The Survey Echosounder shows on the display the actual Longitude and Latitude. Time and date can
be synchronised by actual data.
1.4.9 VTG Course over Ground and ground speedThe actual course and speed relative to ground.
Example:
True Course = 234.1°
Magnetic Course = 256.7°
Speed = 22.2 km/h, 12.0 knots,
Speed =12.0 knots,
Checksum (only example)
$GPVTG,234.1,T,256.7,M,12.0,N,22.2,K*A1<CR><LF>
The Survey Echosounder shows on the display the actual speed in knots. Course information is not
used by Survey Echosounder.
1.4.10 ZDA Time and Date
$--VTG,x.x,T,x.x,M,x.x,N,x.x,K*hh<CR><LF>Checksum
Speed, km/h
Speed, knots
Course, degrees Magnetic
Course, degree TRUE
SURVEY ECHOSOUNDER HydroStar 4900
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UTC, day, month, year and local time zone.
Example:
Time and date o fSurvey Echosounder can be synchronised by actual data.
1.4.11 Output:After each sounding or in a fix rate of 2/s (Factory set-up) the SEB 4900 transmits depth information
to the interface in NMEA, Version 3.0 format. The DPT (Depth), DBT (Depth Below Transducer) and
ELA sentences are as follows.
Only one information will be transmitted. Which of the available information are transmitted must be
specified by the customer.
1.4.12 DPT DepthWater depth relative to the transducer and offset of the measuring transducer.
$SDDPT,x.x,-t.t*hh<CR><LF>
Depth in meter = x.x
Trim in meter = -t.t (distance transducer-keel)
Checksum = hh
Example:
Depth in meter = 337.0 m
Trim in meter = -1.5 m
Checksum (only example)
$--ZDA hhmmss.ss xx,xx,xxxx xx,xx hh, , , * <CR><LF>
ChecksumDifference between UTC andGMTDay,Month,YearUTCTalker Identification
$ZAZDA 184533.20 20,12,1995 12,15 62, , , * <CR><LF>
ChecksumDifference 12 hrs 15 minsDate 20th Dec 1995UTC=18:45:33.20 sData are originating froman atomic clock
SURVEY ECHOSOUNDER HydroStar 4900
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$SDDPT,337.0,-1.5*4D<CR><LF>
1.4.13 DBT Depth Below transducerWater depth referenced to the transducer
Example:
1.4.14 ELACSDS Depth information in proprietary formatA NMEA proprietary sentence ELAC is available to allow the transfer of dual channel depth informa-
tion, including transducer mounting position.
ELA: Manufacture's Mnemonic Code
C: "C" as completion to ELA
$SDDBT x.x,f x.x,M x.x,F hh, , , * <CR><LF>
ChecksumDepth in fathomsDepth in metresDepth in feet
$SDDBT 0012.1,f 0003.7,M 0002.0,F 32, , , * <CR><LF>
ChecksumDepth = 2 fathomsDepth = 3.7 metresDepth = 12.1 feet
$ CSDS, , , , , , * <CR><LF>P k x.x d.d -t.t m g hhELA
ChecksumDepth qualitySelected depth modeDistande transducer-keelin metres (TRIM)Distance transducer-surfacein metres (DRAFT)Depth in metresTransducer locationManufacture´s mnemonic codeP:Propriatary sentence identifier
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SDS: Sounder Depth Single
k: Transducer Location/Active Transducer
1 = Depth from WD1, 2 = Depth from WD2
m: K=DBK (Depth below Keel),
S=DBS (Depth below Surface)
T=DBT (Depth below Transducer)
SEB 4900 transmits always Depth below Keel.
q: Quality of digital depth reading:
0=no depth information available (data not valid)
1=no depth information available, poor quality
2=depth information available, high reliability
SEB 4900 transmits always high reliability. Only reliable depth data are transmitted.
Example:
Location = Depth from Transducer WD1,
Depth = 337.0 m
DRAFT = transducer 3.4 m below surface
TRIM = transducer 1.5 m above keel
K = Depth below keel
Quality = high reliability of depth information
Checksum (only example)
$PELACSDS,1,0337.0,3.4,-1.5,K,2*3F<CR><LF>
SURVEY ECHOSOUNDER HydroStar 4900
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1.5 Technical Description
1.5.1 Mechanical designThe complete SURVEY ECHOSOUNDER is made on non-magnetic material. The SEB 4900 can
also be installed in a rack.
1.5.2 Transmit, Receive and Control Unit SEB 4900The enclosure (Figure 1-3) houses the 19" PCB rack with the electronic units making it suitable to be
operated as a "stand-alone" unit. The material is sand-cast aluminium. Shock mountings are availa-
ble for military use. The electrical connections are realised in the form of multi-pole Cannon connec-
tors.
The front plate is of semi-finished aluminium It is almost completely covered by a membrane. The
membrane contains the keyboard and the display.
Figure 1-3 Transmit, Receive and Control Unit SEB 4900
1.5.3 Connection Box AK 54The Connection Box AK 54 (Figure 1-4) is made of salt-water resistant, cast aluminium.
It serves as a link between the wiring motion sensor and the HydroStar 4900 .
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Figure 1-4 Connection Box AK 54
1.5.4 Connection Box AK 82The Connection Box AK 82 (Figure 1-5) is made of salt-water resistant, cast aluminium.
It serves as a link between the ship´s wiring and transducer cable .
Figure 1-5 Connection Box AK 82
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1.5.5 Junction Box The Junction Box (Figure 1-6) is made of red bronze and is fitted with cable entry glands. It serves
as a link between the ship's wiring and the transducer cable.
Figure 1-6 Junction Box
1.5.6 Transducer LSE 140The Transducer LSE 140 (Figure 1-7) is fitted with seven ceramic elements. A built-in repeater coil
compensates the capacitance of the ceramic element and transforms the resistance to 70 Ohms. The
ceramic element and the repeater coil are potted in a synthetic materiel. The unscreened transducer
cable is watertight along its length. The transducer is protected against abrasion.
Figure 1-7 Transducer LSE 140
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1.5.7 Transducer LSE 179The transducer of 37 ceramic elements excited in their thickness resonance. The resonant frequency
is approx. 15.5 kHz. The transducer can also be operated at 12 kHz or 20 kHz, but them it has to be
individually compensated, since the reactance is getting very large compared to the effective resi-
stance.
The transducer is excellently suitable for displaying of echo intensities and sediment displays and for
measurement of large water depths.
Figure 1-8 Transducer LSE 179
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1.6 Echosounding Principle
1.6.1 Sound VelocityThe speed, at which sound is propagated, depends upon the medium, through which it must travel.
Here some examples:
In air approx. 330 m/s
In water approx. 1,500 m/s
In steel approx. 5,100 m/s
The values above are average values.
The sound velocity in a uniform (homogenous) media is constant. The absolute value is dependent
upon various factors. With propagation in water, deviations in standard values occur, particularly due
to temperature changes and degree of salinity and also to a certain extent, by the pressure. An
increase in salinity and/or temperature will cause the sound velocity to increase. The sound velocity
values, for given circumstances, can be taken from Figure 1-9. The largest deviations from the stan-
dard value of 1500 m/s amount to approx. ± 4%. For this reason, corrective action must be taken in
order to gain precise measurements. With the HydroStar 4900 Survey Echosounder System, correc-
tion values for differing water conditions can be directly entered via a menu. The actual sound velocity
can also be automatically fed into the system, providing that a corresponding sound velocity measu-
ring system is available.
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Figure 1-9 Sound Velocity Diagram
Soundvelocity versus Temperature and Salinity at 0 bar Pressure (Del Grosso)Schallgeschwindigkeit in Abhängigkeit von Temperatur und Salzgehalt bei 0 bar Druck
1400
1410
1420
1430
1440
1450
1460
1470
1480
1490
1500
1510
1520
1530
1540
1550
1560
1570
Temperature /Temperatur [°C]
Soun
dvel
ocity
/ Sc
hallg
esch
win
digk
eit [
m/s
]
0 ppt
10 ppt
15 ppt
20 ppt
25 ppt
30 ppt
35 ppt
40 ppt
0 ppt 1402 1425 1446 1465 1481 1496 1508 1518
10 ppt 1415 1438 1459 1477 1493 1507 1519 1529
15 ppt 1422 1445 1465 1483 1499 1512 1524 1534
20 ppt 1429 1451 1471 1489 1504 1518 1530 1540
25 ppt 1436 1458 1477 1495 1510 1523 1535 1545
30 ppt 1442 1464 1484 1501 1516 1529 1540 1550
35 ppt 1449 1471 1490 1507 1521 1534 1546 1555
40 ppt 1456 1477 1496 1512 1527 1540 1551 1560
0 5 10 15 20 25 30 35
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1.6.2 Formation of Echoes by ReflectionEach time the propagation conditions in the medium alter, a larger or smaller proportion of the sound
is reflected by the edges of the medium and is returned as an echo. The difference in the propagation
characteristics has a fundamental influence on the strength of the echo. Hard objects (stone or steel)
return stronger echoes than soft objects, e.g. mud. The shape of the surface of the object, from which
the echo is reflected, also has a strong influence on the strength of the echo.
Optical laws apply to the reflective surfaces ( angle of in incidence equal to angle of emergence, see
( Figure 1-10 ). Particularly strong reflections (almost 100% reflection) occurs where the water meets
air, which can also be in the form of bubbles. When travelling through wake water, which contains a
high proportion of air bubbles, the bottom echo can be lost completely or strong interference may ap-
pear on the graphic display, caused by the air bubbles close to the surface of the water.
Multiple echoes can also occur. If the echosounder is sufficiently sensitive, the returning echo can be
reflected by the surface of the water, return to the sea bed and back to the ship, where it will be re-
ceived and displayed as a double echo. In some cases, triple and even quadruple echoes have been
observed.
With larger ships, in particular flat-bottomed ships, the surface reflection not only results from the sur-
face of the water but also from the bottom of the ship's hull. This then results in a double bottom struc-
ture in the double echo. The upper contour is from the reflection caused by the ship's hull. The
distance is exactly twice the water depth below the keel, as the transducer is normally installed there.
The next, slightly deeper contour is caused by the beam reflected by the surface of the water. This
contour is usually slightly stronger, as the reflection is stronger. The difference between the two sea
bed contours corresponds to the draft of the ship.
1.6.2.1 Multiple Echo Principle of EchosoundingThe sound beam is almost completely reflected where the two media, air and water, meet. When a
sounding pulse returns from the sea bed as an echo, only a very small portion hits the transducer as
a useful echo.
A far larger portion hits the ship's hull surrounding the transducer and an even larger portion hits the
surface of the water around the ship, from where it is reflected back to the sea bed.. This is in turn
reflected from the sea bed, causing the same sounding pulse to be received by the transducer a se-
cond time. If it is still strong enough, after having covered twice the distance, it will be displayed below
the first sea bed echo, at twice the depth, as a so called "double" or "1st multiple" echo. That portion
of the sounding pulse, which was reflected by the surface of the water, will appear on the display at
twice the depth. With larger vessels and relatively shallow water, that portion of the sounding pulse,
which was reflected by the ship's hull, will also be displayed. Due to the fact, that the ship's hull is
smaller than and does not reflect as well as the surface of the water, the double echo from the ship's
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hull is correspondingly weaker.
Figure 1-10 Double Echoes
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Figure 1-11 Double Echo - Presentation
The double echo can be seen most clearly on the SEB 4900 display, when the threshold is set
to 0, see Figure 1-11L.
1.6.3 Noise LevelDue to attenuation losses and the geometric propagation, the echo signals become ever weaker with
increasing depth and are finally lost in the ambient noise. In order to become a clear presentation,
the echo signals received must be stronger than these noise signals. The so-called "useful signal /
noise ratio" generally limits the range of an echosounder. For this reason, the noise level at the trans-
ducer's place of installation is an important factor.
The noise level on board a moving ship is generally very high. The main sources of noise are natu-
rally the ship's engines and the propeller but auxiliary machinery in the vicinity of the transducer and
the current of water over the ship's hull are also contributory factors. There is also water borne noise,
like waves, reverberation etc. The spectrum of such noise ranges between a few Hertz and several
hundred Kilohertz. There are generally no frequencies, which are free of noise. Echoes received from
a great depth are extremely weak, the reception power at the transducer lies in the region of
1 x 10-10 ( 0.0000000001 W ). When one compares this to the many thousand watts of power, which
must be produced on board, to propel the ship, the noise problem becomes obvious. The most effec-
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tive means of eliminating noise in an echosounder system, is to tune all parts of the system to preci-
sely the same frequency (resonance). This applies to the transmitter, the transducer and the
reception amplifier. The bandwidth must also be kept as narrow as possible, in order to prevent the
reception of noise, outside the operating range of the echosounder.
1.6.4 System Frequency and Its EffectAs previously mentioned, attenuation losses increase with increases in frequency. The range of an
echosounder is thus greater at a lower frequency. This however only has a practical meaning for
great distances of over 1000 m and does not therefore apply to normal echosounders. For this reason
however sonar systems operate at low frequencies to achieve increased range. Low frequencies
have several disadvantages for echosounder systems. This applies to the transducer, which, in order
to achieve a narrow beam, has to be far larger for a low frequency.
The other disadvantage with a low frequency system lies in the resolution, which deteriorates at low
frequency. This is due to the pulse length. The transducer should operate at resonance, i.e. its natural
mechanical frequency is matched to the electrical system frequency. In order that resonance can de-
velop, a pulse must contain a whole series of oscillations. The transducer represents a considerable
mechanical mass and must first oscillate. This naturally takes longer for a large mass (transducer of
low frequency) than for a small, high-frequency transducer.
The same applies for the end of the pulse, where the transducer oscillation, caused by the electrical
transmission pulse, decays With a low system frequency, the transmission pulses must be consi-
derably longer.
The pulse length determines the resolution of the echosounder. The term "resolution", is understood
to be the smallest distance apart at which a system can display two objects as separate objects. Re-
solution can not be performed within a pulse. The distance between the two objects must hence be
larger than the pulse length plus the pulse decay process.
In order to make the best possible use of the resonance effect of the transducer, approx. 30 electrical
transmission pulse oscillations are required. This corresponds to a pulse length of 0.7 ms at 50 kHz,
whereas the pulse length is 3.5 ms at 10 kHz. The resolution at lower frequencies is thus 5 times
worse . If the transmission pulse is less than 30 oscillations, the resonance effect is partially lost. This
is generally permissible in shallow water, as ,due to the high transmission power, the "useful signal
/ noise ratio" is better than in deep water. TheSurvey Echosounder HydroStar 4900 operates with
6 pulse lengths of 0.1 ms in the 10 m range (30 kHz), 0.15 ms in the 25 m and 50 m range (12 kHz),
0,5 ms in the 25 to 100 m ranges ( 30 kHz) 1.0 ms in the 100 m range ( 12 kHz), 10.0 ms in the
250 m range ( 12 kHz), 1.0 ms in the 250 and 500 m ranges ( 12 kHz), 20 ms in 500 m range
( 30 kHz), 10ms in 1000 m range, 20 ms in the 3000m and 6000m and 100 ms in the 10000 m range.
The pulse length is automatically changed, when the operating range is changed. These pulse
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lengths give a resolution of approx. 30 cm in the shallow ranges and 2.0 to 20 m in the deeper ranges.
This resolution is of particular importance when sounding in shallow water.
In order to suppress noise, the bandwidth of the reception channel is kept to a minimum. This is to
prevent reception of noise, which is outside the frequency range of the system. On the other hand,
the bandwidth must be wide enough to allow the short echo pulse to be processed without hindrance.
Taking the switchable pulse length of the system into consideration, the bandwidth of the Survey
Echosounder HydroStar 4900 is always changed to suit the range selected.
Taking the required range of the system, of at least 1000 m and a sounding resolution of approx. 0.3
m, a system frequency of 200 kHz was chosen for the Survey Echosounder HydroStar 4900. At this
frequency, the sound pulses also penetrate the soft sea bed layers to a certain degree. This is so that
the sea bed structure can be displayed. This is an important factor during anchoring manoeuvres for
example. Layers in the water, due to differing temperatures or salinity of the water will also be dis-
played.
1.6.5 Influences of Sea Bed Contour and Ship's MovementFlat Sea Bed
The vertical echo is received first. The true water depth, at the ship's position, is displayed.
Figure 1-12 Flat Sea Bed
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Sloping Sea Bed
The vertical echo arrives too late. The depth displayed is too shallow.
Figure 1-13 Sloping Sea Bed
Undulating Sea Bed
The vertical echo is received later. The depth displayed is also too shallow. Small troughs can be
overlooked completely.
Figure 1-14 Undulating Sea Bed
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1.6.5.1 Influences of Ship's MovementDue to the motion of the ship, the narrow echosounding beam deviates from the vertical and the so-
unding indicates a greater than actual depth.
If a less concentrated beam is now used, this error can be corrected.
Unfortunately, one hundred percent justice can not be done to both requirements. A compromise is
achieved by using a moderately concentrated beam.
1.7 Function
1.7.1 Special Characteristics of the Survey Echosounder HydroStar 4900The HydroStar 4900 differs greatly in function from the way in which normal echosounders operate.
A decisive factor during development of the system was the requirement to employ the
HydroStar 4900 as standard equipment on board surface ships, to measure the depth of water under
the keel and to present this true to scale and in the correct position in one and the same echogram.
A further requirement was the presentation of the depth of water in digital form, and to permit con-
nection of additional repeater displays.The HydroStar 4900 provides outstanding performance in vir-
tually any application requiring precise, dependable depth measurement and evaluation of bottom
conditions. It fully meets the requirements of professional hydrography for bathymetry ranging from
maximum ocean depths to river and channel surveys as well as site and route surveys for offshore
construction.
1.7.2 Navigation Mode ( NAV )Nav Mode are basic compulsory settings which must be used when operating the system for naviga-
tion purpose. These are laid down by the International Maritime Organisation ( IMO ) and state that:
- After switched „ ON „ the system works on NAV- Mode
- The Sound Velocity must be set to 1500 m/s
- The unit of measurement must be metric ( metres )
- Water depth must be measured below the keel (DBK )
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Figure 1-15 Presentation NAV - Mode
1.7.3 WATER DEPTH- Mode (DBK)The distance between the keel and the sea bed should be displayed as the water depth (depth below
the keel). To enable this, an LF transducer is installed in the ship's bottom but which, due to the ship's
construction, is often not on the underside of the keel. To correct this, the distance between the trans-
ducer and the underside of the keel must be taken into consideration. The measurement itself starts
naturally from the surface of the water. To display the depth of water under the keel, the distance
between the echosounder and the keel must be subtracted from the depth measured. This is carried
out automatically, if it is set during the HAT. The zero line of the recording corresponds to the trans-
ducer, under which the sea bed profile recording is presented in the echogram ( Fig. 1-16, Fig.1-17).
This causes a deviation between the depth displayed (below the keel) and the depth recorded, the
greater the transducer to keel compensation, the smaller the range selected.
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Figure 1-16 Presentation of Water Depth ( DBK )
1.7.4 WATER DEPTH- Mode ( DBS)For the water depth measurement, it is also possible to measure the depth from the surface of the
water to the sea bed. A pressure sensor, which measures the depth between the surface of the water
and the keel, is required for this purpose. In the DBS mode, this difference is presented on the display
and taken into consideration for the depth indication.
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Figure 1-17 Presentation of Water Depth ( DBS )
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1.8 Method of OperationThe values measured for water depth and sound velocity, determined by this system, can be display-
ed simultaneously on the display and on the digital displays.
An acoustic and visual alarm facility is activated. The acoustic alarm can be switched OFF centrally
in the unit.
The electronics can be disassembled to 3 units:
- Analogue part
- Depth computer
- Control computer
and Operating / Display unit.
The Operating / Display unit is based on an industrial PC with compact PCI bus. The operating pro-
gramme is Windows NT 4.0 The PC software is sub-divided into two independent main programmes.
The console programme is responsible for the screen output to the display and for reading in operator
commands via the keyboard, whilst the other, the host programme, communicates with the depth
computer via a serial interface and is responsible for data administration with external interfaces (ex-
ternal equipment, sensor inputs).
A flash drive is used in this computer system in place of the hard disk.
The keyboard is a matrix keyboard. Signals from this are processed for the PC by means of a con-
verter PCB. As the console lighting must also be dimmable, a pulse width control system is used for
the keyboard and display lighting.
The receiver is designed as a super heterodyne receiver. The various operating frequencies
(12 kHz to 1 MHz) are selected by switching the mixing frequency over. An AC voltage mixed to an
intermediate frequency (455 kHz) is available at the output and not a rectified signal as is normally
the case. Digitalisation takes place before the rectifier, in order to allow flexibly configurable filter
structures by using fast processors. This measure reduces the sensitivity to interference (noise) du-
ring depth sounding.
1.8.1 TransmitterThe transmitter is realised in the form of a tried and tested FET bridge circuit. This has particularly
low loss characteristics.
1.8.2 Depth ComputerThe depth computer comprises a 32 bit floating decimal point DSP. Transmission triggering is follo-
wed by a time-dependent control voltage for the TVG. The results of a sounding are available almost
immediately after completion of the sounding. The complete read-in buffer of the rectified echo is
compressed to 400, 8 bit amplitude values for graphic presentation on the display. The interface to
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the PC is served asynchronous to this. During the initialisation phase, information as to the respective
equipment configuration are fed in here. During operation, operating parameter changes (pulse
width, pulse power, alarm relay switching, measurement range etc.) are communicated. At the output
side, the 400 echo amplitudes and the values measured by the sensors must be transfered.
1.8.3 Control ComputerThe control computer handles all control functions, e.g. transmission trigger resolution, administrati-
on of all ext. interfaces, evaluation of keyboard inputs and the output to the display.
Figure 1-18 Block Diagram HydroStar 4900
Hyd
roSt
ar 4
900
CR
T
STE
RS
232
Prin
ter
RS 422DAZ 25
Optional
Com
pact
PC
IS
igna
l-pr
oces
sing
Tran
sduc
er
ext.
Tran
smit
trigg
er
Blan
king
LOG
Alar
mR
elay
-co
ntac
t
PS
ELC
-Dis
play
Eth
erne
t
Dig
ital S
lave
Dis
play
640
x 48
0
Ope
ratio
n pa
nel
PW
M
SURVEY ECHOSOUNDER HydroStar 4900
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PART 2
OPERATING INSTRUCTIONS
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LIST OF CONTENTS2 OPERATING INSTRUCTIONS .................................................................................... 44
2.1 Safety Regulations for Handling Electrical Equipment ................................................. 44
2.2 Checks After Installation/Start-Up ................................................................................ 44
2.2.1 Setting the Transducer - Correction ES WD1 and WD2 .............................................. 44
2.2.2 Setting the Sound Velocity ........................................................................................... 44
2.2.3 Storing the Reverberation Threshold .......................................................................... 44
2.3 Initial Switch-ON and Operation .................................................................................. 45
2.3.1 ON / OFF Key and Special Function Keys .................................................................. 46
2.4 Display Presentation .................................................................................................... 50
2.4.1 Explanation of Display Presentations........................................................................... 51
2.4.3 Status Line .................................................................................................................. 56
2.5 Altering System Parameters and Settings.................................................................... 58
2.5.1 THRESHOLD, RANGE and DIM Settings.................................................................... 58
2.6 General Information Regarding the MENU HydroStar 4900 ........................................ 60
2.6.2 MENU Alarm ................................................................................................................ 65
2.6.3 MENU Sonar Parameter .............................................................................................. 70
2.6.4 Sonar Parameter MENU - Pulse Power ....................................................................... 73
2.6.5 Sonar Parameter MENU - Pulse Length ..................................................................... 76
2.6.6 Sonar Parameter MENU - " Autophase " ..................................................................... 79
2.6.7 MENU PROPERTIES................................................................................................... 86
2.6.8 MENU Data Storage..................................................................................................... 101
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LIST OF FIGURES Figure 2-1 Front View of HydroStar 4900................................................................................ 45
Figure 2-2 Keyboard................................................................................................................ 46
Figure 2-3 ON/ OFF and Special Keys..................................................................................... 47
Figure 2-4 CURSOR Keys ...................................................................................................... 47
Figure 2-5 ESCAPE / ENTER Keys ........................................................................................ 48
Figure 2-6 THRESHOLD Keys................................................................................................ 48
Figure 2-7 RANGE Keys ......................................................................................................... 48
Figure 2-8 DIM keys ................................................................................................................ 49
Figure 2-9 STAND BY Indicator ............................................................................................. 49
Figure 2-10 Loudspeaker Key................................................................................................. 49
Figure 2-11 Presentations on the Display WD 2 200kHz DBK................................................ 50
Figure 2-12 Presentation on the Display WD1 12kHz DBK+ WD2 200kHz DBK.................... 51
Figure 2-13 Marker line on the Display .................................................................................... 53
Figure 2-14 Change of Range (Range Window) ..................................................................... 53
Figure 2-15 Presentation in the Display Mode: WD 2 200 kHz + WD 1 12 kHz...................... 54
Figure 2-16 Display Mode: Large Depth Display WD 2 200 kHz NAV..................................... 55
Figure 2-17 Grey Scale Presentation ( Threshold 0)............................................................... 56
Figure 2-18 Display at Switch- ON........................................................................................... 58
Figure 2-19 Main Menu ........................................................................................................... 60
Figure 2-20 Menu Display Mode „ ES, WD 1 12kHz............................................................... 61
Figure 2-21 Menu Display Mode „ ES, WD 1 12kHz + WD 2 200kHz..................................... 61
Figure 2-22 Menu Display Mode „ Large Depth Display“ ........................................................ 62
Figure 2-23 Menu Display Mode „ Large Depth Display WD1 12 kHz DBK............................ 62
Figure 2-24 Menu Display Mode „ Large Depth Display WD 1 12kHz + WD 2 200kHz.......... 63
Figure 2-25 Menu Display Mode: „ Range Marks Mode 1 „ ..................................................... 63
Figure 2-26 Menu Display Mode „ Range Marks Mode 1 „ ..................................................... 64
Figure 2-27 Menü Display Mode „ Range Marks Mode 2 „ .................................................... 65
Figure 2-28 Menu Alarm „ Alarm active“ ................................................................................. 65
Figure 2-29 Menu Alarm „ Test“ ............................................................................................. 66
Figure 2-30 Menu Alarm „ Acoustic alarm............................................................................... 67
Figure 2-31 Menu Alarm „ WD upper Limit“ ............................................................................ 68
Figure 2-32 Setting Window „ WD: Alarm upper Limit“ ........................................................... 68
Figure 2-33 Menu „WD lower limit“........................................................................................ 69
Figure 2-34 Setting Window „ WD: Alarm lower limit [ m ] ..................................................... 69
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Figure 2-35 Alarm Marker and optical alarm presentation ...................................................... 70
Figure 2-36 Menu Sonar Parameter „ Pulse Sequence- Continuous“..................................... 71
Figure 2-37 Menu Sonar Parameter „ Pulse Sequence- External Trigger“ ............................. 72
Figure 2-38 Setting Window „ Trigger delay „.......................................................................... 72
Figure 2-39 Window of EXTERNAL Information ..................................................................... 72
Figure 2-40 Sonar Parameter Menu, " Pulse Power - Automatic ".......................................... 73
Figure 2-41 Sonar Parameter Menu, " Pulse Power - Increase"............................................. 74
Figure 2-42 Sonar Parameter Menu, " Pulse Power - Decrease" ........................................... 75
Figure 2-43 Information window "Pulse Power: Decrease"..................................................... 76
Figure 2-44 Sonar Parameter Menu, " Pulse Length - Automatic "......................................... 77
Figure 2-45 Sonar Parameter Menu, " Pulse Length - Increase" ............................................ 77
Figure 2-46 Information window: "Pulse Length" .................................................................... 78
Figure 2-47 Sonar Parameter Menu, " Pulse Length - Decrease" .......................................... 79
Figure 2-48 Sonar Parameter Menu, " Autophase OFF "........................................................ 80
Figure 2-49 Sonar Parameter Menu, " Autophase Automatic "............................................... 81
Figure 2-50 Display Presentation : Autophase Automatic....................................................... 81
Figure 2-51 Sonar Parameter Menu " Autophase Manual " .................................................... 82
Figure 2-52 Setting Window: " Range Start" ........................................................................... 82
Figure 2-53 Display Presentation: Auto: Manual..................................................................... 83
Figure 2-54 Sonar Parameter Menu " Blocking Depth, Manual " ............................................ 84
Figure 2-55 Blocking Depth Presentation................................................................................ 85
Figure 2-56 Setting Window : " Blocking Depth" ..................................................................... 85
Figure 2-57 Menu Properties „ User Setting - Save 1“ ............................................................ 86
Figure 2-58 Menu Properties „ User Setting - Load 1“ ............................................................ 87
Figure 2-59 Menu Properties „ Sound Velocity ....................................................................... 87
Figure 2-60 Setting Window „ Sound Velocity“........................................................................ 88
Figure 2-61 Menu Properties „ Date + Time“ .......................................................................... 88
Figure 2-62 Setting Window „ Date: Year“ .............................................................................. 89
Figure 2-63 Setting Window „ Date: Month ............................................................................ 89
Figure 2-64 Setting Window „ Date: Date................................................................................ 89
Figure 2-65 Menu Properties“ Date + Time“ ........................................................................... 90
Figure 2-66 Setting Window „ GMT- Time: Hour „................................................................... 90
Figure 2-67 Setting Window „ GMT- Time: Minute „................................................................ 90
Figure 2-68 Menu Properties - " Reverberation " .................................................................... 91
Figure 2-69 Information Window "Reverberation Measurement" ............................................ 92
Figure 2-70 Menu Properties. Reverberation "Storage Range" .............................................. 92
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Figure 2-71 Menu Properties. Reverberation "Storage Manual" ............................................. 93
Figure 2-72 Setting Window: „ Reverberation ( Blocking Depth m )“ ...................................... 93
Figure 2-73 Setting Window: „ Reverberation ( Blocking Depth) Storage “ ............................ 93
Figure 2-74 Menu Properties „ Draft“ ..................................................................................... 94
Figure 2-75 Setting Window „ Draft“........................................................................................ 94
Figure 2-76 Menu Properties „ Depth Mode“........................................................................... 95
Figure 2-77 Depth Mode „ DBK“.............................................................................................. 96
Figure 2-78 Depth Mode „ DBS“.............................................................................................. 97
Figure 2-79 Properties Menu “ Meter“ ..................................................................................... 98
Figure 2-80 Standart graphic with Meter - Scale..................................................................... 98
Figure 2-81 Standart graphic with Fathoms - Scale ................................................................ 99
Figure 2-82 Standart graphic with Feet - Scale....................................................................... 100
Figure 2-83 Menu Properties „ Transducer Correction.......................................................... 100
Figure 2-84 Setting Window „ Keel correction „....................................................................... 101
Figure 2-85 Confirmation Window........................................................................................... 101
Figure 2-86 Menu „ Data Storage - Show“ ............................................................................. 102
Figure 2-87 Menu „ Data Storage - Search“............................................................................ 103
Figure 2-88 Setting Window „ Date: Year“ ............................................................................... 103
Figure 2-89 Setting Window „ Date: Month“ ........................................................................... 104
Figure 2-90 Setting Window „ Date: Day“............................................................................... 104
Figure 2-91 Setting Window „ Date: Hour“ ............................................................................. 104
Figure 2-92 Menu „ Data Storage - Clear“............................................................................... 105
Figure 2-93 Warning Message for „ Data Storage - Clear“ ..................................................... 105
Figure 2-94 Message „ Not surfficient data“ ............................................................................ 106
Figure 2-95 Menu Print............................................................................................................ 106
Figure 2-96 Menu „ Testmode - Built In Test“ ......................................................................... 107
Figure 2-97 Display Presentation of the items tested by the Built In Test............................... 108
Figure 2-98 Menu „ Testmode - Oscilloscope - Rectified Echo“.............................................. 109
Figure 2-99 Oscilloscope - Echo Signal Presentation“............................................................ 109
Figure 2-100 Menu „ Testmode- Key Gain“............................................................................. 110
Figure 2-101 Menu Testmode „Gain Manual“ ......................................................................... 111
Figure 2-102 Setting Window „ GAIN“..................................................................................... 111
Figure 2-103 Confirmation Window......................................................................................... 112
Figure 2-104 Display Offline BITE........................................................................................... 113
Figure 2-105 Menu „SW- Reset“ ............................................................................................. 113
Figure 2-106 Warning Window „ SW Reset“ ........................................................................... 114
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Figure 2-107 Menu „ LCD Test“ .............................................................................................. 114
Figure 2-108 Menu „ About“ .................................................................................................... 115
Figure 2-109 Window ABOUT................................................................................................. 115
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2 OPERATING INSTRUCTIONS
2.1 Safety Regulations for Handling Electrical Equipment
Personnel working on open equipment must be familiar with and adhere strictly to the safety regula-
tions pertaining to such work.
Before carrying out work inside open equipment, the supply voltage must be switched OFF.
Work must only be carried out on open equipment in the presence of a second person. This person
must have a sound knowledge of "FIRST AID IN THE EVENT OF ELECTRIC SHOCKS"
2.2 Checks After Installation/Start-Up
2.2.1 Setting the Transducer - Correction ES WD1 and WD2The transducer - correction eliminates the difference between the base of the transducer and the un-
derside of the keel for the survey echosounder display. This means, that the survey echosounder dis-
play shows the depth of water under the keel.
This difference is due to the place of installation of the transducer and must be taken from the shipy-
ard construction drawings.
The transducer correction setting is made during the HAT by the menu.
2.2.2 Setting the Sound VelocityThe actual sound velocity inherent in the area of operation can deviate from the average sound
velocity (1500 m/s), depending upon the salinity and temperature of the water. The deviation can be
as much as ± 4%.
If the actual sound velocity can not be determined, it must be set to 1500 m/s.
The range of adjustment is between 1400 m/s to 1650 m/s.
The setting is made in accordance with Chapter 2.6.7.3.
On the NAV- Mode the sound velocity change automatically to 1500 m/s.
2.2.3 Storing the Reverberation ThresholdThe transducer reverberation makes it necessary to enter a so called "REVERBERATION THES-
HOLD" into the system and store it.
The reverberation threshold prevents the display from being affected by the transducer's reverbera-
tion.
This threshold differs from ship to ship and is therefore set and stored after the system has been in-
stalled and during the SAT. It can also be set and stored at a later point in time.
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In order to make this setting, the ship must have a water depth in excess 10 m under the keel and be
travelling at 2/3rds of its maximum speed.
The setting is made in accordance with Chapter 2.6.7.7.
2.3 Initial Switch-ON and Operation
The Transmit, Receive and Control Unit SEB 4900 is equipped with a keyboard, which controls echo-
sounding functions and via which menu control can be carried out. Some important functions can be
controlled directly using special keys. Other functions can be called up from a menu, which is visible
on the display. The menus are in the English language but can be altered to other languages. The
menu language can only be changed by the manufacturer. Menus are controlled using the ESCAPE,
ENTER, UP and DOWN keys. The menu is organised in several levels. The main functions are listed
in the first level. The next level can be reached by pressing the ENTER key, the previous level can
be reached by pressing the ESCAPE key. These keys are used to select the desired setting.
Figure 2-1 Front View of HydroStar 4900
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Figure 2-2 Keyboard
2.3.1 ON / OFF Key and Special Function Keys
2.3.1.1 ON / OFF Key The ON / OFF and special function keys are situated in the centre of the keyboard.
The unit is switched ON by pressing the ON / OFF key. They ON / OFF key is black. The unit switches
ON with the parameters which were in use before it was last switched OFF. The following parameters
are not stored and default settings are used when the unit is switched ON.
- NAV- Mode
- Trigger mode = continuous
- Autophase = no Autophase ( OFF )
- Blocking depth = 0
- AGC is active
The unit is switched OFF by pressing the same key. The key must be held pressed for approx. 5 sec.,
after which time it switches OFF.
2.3.1.2 NAV Key Press the NAV- key to change from the normal mode to the NAV- Mode. After again pressing this
push button the system goes back in the normal mode.
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2.3.1.3 STORE Key When the "STORE" key is pressed, sensor data storage is initiated, providing that sensors are con-
nected to the system. The storage procedure is terminated by pressing the key once again. "Store
OFF" or "Store ON" appears in the status line.
2.3.1.4 MARK Key When the "MARK" key is pressed, a vertical line from top to bottom appears on the display. The time
at which the key was pressed appears on the line. The line moves across the screen from right to
left. A reverse mode is also available, this can however only be set up by the manufacturer.
Figure 2-3 ON/ OFF and Special Keys
2.3.2 Operating Elements2.3.2.1 Cursor Keys
The CURSOR keys allow the operator to move the cursor within a menu and to alter
parameters. The position of the cursor can be easily recognised. The word, letter or
number marked by the cursor appears inverse (dark background, light text). Parameters
to be altered must first be "marked" by the cursor. Value settings are altered using the
cursor keys.
The keys can be used to switch directly to the mode Display Mode / ES
Figure 2-4 CURSOR Keys
CURSOR
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2.3.2.2 ESCAPE / ENTER KeysThe ESCAPE key is used to exit a menu or to abort parameter alterations.
The ENTER key is used to call up menus and to confirm alterations to parameters within
a menu.
Figure 2-5 ESCAPE / ENTER Keys
2.3.2.3 TRESHOLD KeysThe THRESHOLD keys are used to alter the signal control for the display presentation.
The quality of the presentation is influenced by this. The amplification can be controlled
by these keys when they are active, see Chapter 2.6.7.5.4. The gain can also be adju-
sted manually, see Chapter 2.6.7.5.
Figure 2-6 THRESHOLD Keys
2.3.2.4 RANGE KeysThe RANGE keys are used to set the depth range of the system.
These ranges are:
Range I : 0 to 10 m, 0 to 6 fms 0 to 30 ft only 200kHz
Range II : 0 to 25 m, 0 to 15 fms 0 to 75 ft
Range III : 0 to 50 m 0 to 30 fms 0 to 150 ft
Figure 2-7RANGE Keys Range IV : 0 to 100 m 0 to 60 fms 0 to 300 ft
Range V : 0 to 250 m 0 to 150 fms 0 to 750 ft
Range VI : 0 to 500 m 0 to 300 fms 0 to 1500 ft
Range VII : 0 to 1000 m 0 to 600 fms 0 to 3000 ft only 12kHz
Range VIII : 0 to 3000 m 0 to 1800 fms 0 to 10000 ft only 12kHz
Range IX : 0 to 6000 m 0 to 3600 fms 0 to 20000 ft only 12kHz
Range X: 0 to 10000 m 0 to 6000 fms 0 to 30000 ft only 12kHz
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2.3.2.5 DIM KeysThe DIM keys are used to set the display and keyboard background lighting to suit the
operator.
Figure 2-8 DIM keys
2.3.2.6 STAND BY IndicatorsThe STAND BY indicator lights up, when the supply voltage is available but the unit
is not actually switched ON.
Figure 2-9 STAND BY Indicator
2.3.2.7 Loudspeaker KeyThe key with the loudspeaker symbol crossed out is used to de-activate the alarm
function for a period of 3 minutes.
The loudspeaker key also has additional functions when making parameter settings.
Figure 2-10 Loudspeaker Key
- Alarm limits are set to 0.
- Blocking depth is set to 0.
- Trigger delay setting is set to 0.
- Draft setting is set to 0.
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2.4 Display Presentation
All available information is presented on the display (Figure 2-11). The display is split into 3 areas.
- Information field
- Echograph presentation
- Status line
Figure 2-11 Presentations on the Display WD 2 200kHz DBK
Information-field
EchoRegistration
Status line Marker line Range Scale
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Figure 2-12 Presentation on the Display WD1 12kHz DBK+ WD2 200kHz DBK
2.4.1 Explanation of Display Presentations
2.4.1.1 Information fieldThe operating mode in use is indicated in the information field. There are 3 indications
1. Operating mode WD1 12kHz
2. Operating mode WD 2 200kHz
3. Operating mode WD 1 12kHz + WD 2 200kHz
On the same level, it is also shown which measurement scale is in use, e.g. "m".An arrow, which can
be on a yellow or red background, appears at the left-hand side of the digital depth indication. If the
depth remains constant, the background changes to green and the arrow disappears. The colour
changes, if the depth increases or decreases. If the depth decreases, the arrow points upwards and
the background turns red. If the depth increases, the arrow points downwards and the background
turns yellow. The depth indication appears in a white box. The depth measured is displayed numeri-
cally in this field. If the operating mode WD 112 kHz + WD 2 200 kHz is in use, the display window
is split vertically into WD 2 and WD 1. The display for WD 2 is on the left-hand side, followed by WD 1
to the right. If only one channel is selected this channel, WD 1 or WD 2 fills the whole display. This
WD 2 WD 1
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area also serves as a visual alarm indication, providing that the alarm circuit is switched ON via the
menu, refer to Chapter 2.6.2.1. If the max. / min. depth limits selected are exceeded, the background
of this area turns red. If the range in use is exceeded, the numeric display digits change from black
to blue. There are three display areas in the top centre of the display, SOG, Clock and display unit
selected. If both Master and Slave units are used, the name of the relevant unit will indicated here.
The background of the display area is green for the Master, and red for the Slave. The clock is con-
trolled by the built-in computer. It is also possible to control the clock from an external source. Refer
to Chapter 2.6.7.5.
The upper area is used to display the depth below keel, or depth below sensor, the speed over the
ground ( SOG ). GPS data, in which the speed is included, are required for this indication. The top,
right-hand side of the display is used to indicate the current sound velocity [ Sv1 ]. The current sound
velocity is set via the relevant menu. Refer to Chapter 2.6.7.3. If the echosounder is connected to an
external sound velocity measuring system, the sound velocity indication is controlled from there. To
enable this, the unit is set to automatic control via the relevant menu.
The additional data, like Longitude ( Lon ) and Latitude ( Lat ) are only displayed, if the unit is con-
nected to a navigation system.
The indications for Temperature ( Tem ), Salinity ( Sal ) and Density ( Den ) are only displayed, if the
corresponding data are fed to the unit (sensor).
2.4.2 Echograph PresentationsIn the survey echograph, the echo recording is presented in colour according to the sea bed struc-
ture. A scale corresponding to the range selected can be seen at the right-hand side of the display.
The scale can also be presented across the whole width of the display. The presentation mode is
changed via the relevant menu. Refer to Chapter 2.6.1.3.
Every time the range is changed, a vertical yellow line is set, the beginning and end of which are in-
scribed (Figure 2-13). At the same time as the range is changed, an information window, indicating
the new range, appears for a period of 3 seconds (Figure 2-14 ).
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Figure 2-13 Marker line on the Display
Figure 2-14 Change of Range (Range Window)
Start marker Range markerold Range
Time marker
Range Window
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A further presentation mode is the 2 channel display presentation. In the WD 1+ WD 2 operating mo-
de, information from both transducers is presented on the display, see Figure 2-14 . The water depth
WD 2 is shown on the left-hand side of the display and water depth WD 1 on the right-hand side. If
only WD 2 is selected, only the sea bed structure measured by the second transducer is shown. This
operating mode is selected via the relevant menu, refer to Chapter 2.6.1.2, or by using the CURSOR
keys [ up or down ].
Figure 2-15 Presentation in the Display Mode: WD 2 200 kHz + WD 1 12 kHz
Another form of display presentation is a large numerical presentation of the depth in a window, with
a white background, refer to Chapter 2.6.1.2. (Figure 2-16). If the alarm is activated, this window will
turn red ( Figure 2-35). The background of the window also changes to red, if a sounding failure or
interface error occurs.
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Figure 2-16 Display Mode: Large Depth Display WD 2 200 kHz NAV
This appears on the display, if the ENTER key is pressed. If the ESCAPE key is pressed, this pre-
sentation disappears from the display.
If the threshold is set to 0, using the THRESHOLD keys, a grey scale display presentation appears,
similar to an echo recording on paper.
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Figure 2-17 Grey Scale Presentation ( Threshold 0)
2.4.3 Status LineThe following parameters are displayed at the bottom edge of the display.
- Status
- Threshold
- Store
- Auto
- # 0
- Lin or Log
- Continuous
- GAIN (WD 1 and WD 2)
- Date
- Manufacturer's name
Status: This field indicates, whether or not the unit is ok. Normally this window will indicate
Status OK. If an error occurs during operation, this will be indicated as, for example
ERROR 3.
Only the error with the highest priority will be indicated. The test items can be called
up via the "Test" menu. Refer to Chapter 2.6.9.1.
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Threshold: This field indicates the control steps, which are set using the THRESHOLD keys
(Figure 2-6).
The range of settings lies between 0 and 10.
Store: After pressing the STORE key (Figure 2-3 ), the following Store information appears
in this field: ON, when the storing process begins. When the STORE key is pressed
once again, the following information appears in this field: OFF. The storage process
has been completed. Storing can only be carried out, when sensors are connected.
Auto: If the Autophase function is called up via the "Sonar Parameter" menu, the parame-
ters OFF, Automatic and Manual appear in sub-menu 1. If the parameter "Automatic"
is called up, the word "Automatic" appears in this field. If the parameter "Manual" is
called up, the word "Manual" appears in this field. Refer to Chapter 2.6.6.1.
#: This field indicates, which console is in use. The console for Master is always 0.
Log or Lin: This setting specifies, whether the presentation is linear or logarithmic. Linear presen-
tation is used, if only the sea bed is to be shown. If sediment structures or shoals of
fish are to be observed, Logarithmic presentation must be selected.
GAIN: The Gain setting is also displayed in the status line. If the unit is operating with auto-
matic Gain, the characters will be black. If the unit is operating in the manual mode,
the setting is made via the menu, the characters will be red. The Gain setting range
is from -80 dB to + 79 dB in steps of 1 dB. The Gain is shown in two adjacent fields, if
the unit is operating in the WD1 + WD 2 modee. .
Continuous: This field indicates, which type of pulse is in use. When the continuous pulse mode is
in use, the word "Continuous" appears in this field. If the type of pulse is switched to
"NAV", the word " NAV" appears. The type of pulse is changed, using the keyboard,
(Figure 2-3). The NAV mode is revoked by pressing the "NAV " key for approx. 3
seconds. The indication in the field changes from "NAV " to "Continuous". The ope-
rating mode can also be revoked via the relevant menu. Refer to Chapter 2.6.3.1. Ex-
ternal triggers and LOG can be set via the SONAR PARAMETER - PULSE
SEQUENCE menu. These will be displayed accordingly.
Further information in the status line includes the date and manufacturer's name.
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2.5 Altering System Parameters and Settings
To switch the unit ON, press the ON / OFF key (Figure 2-3 ). After switching ON, the following display
initially appears for approx. 5 seconds ( Fig. 2-18 )
Figure 2-18 Display at Switch- ON
The unit then switches ON and assumes the settings last used. If the alarm circuit is switched ON,
both red alarm marker lines are set. The alarm marker lines only appear, if they were active before
the unit was last switched OFF. The acoustic alarm is switched OFF when the unit is initially switched
ON.
To switch the unit OFF, the ON / OFF (Figure 2-3) key must be held pressed for a period of at least
3 seconds. The unit then switches OFF after a period of 5 seconds. This is a built-in safety device,
to prevent the unit from being switched OFF inadvertently.
2.5.1 THRESHOLD, RANGE and DIM SettingsThe settings THRESHOLD, RANGE ( depth range ) and DIM ( background lighting for display and
keyboard ) are made by pressing the corresponding key. There are keys marked with arrows
( arrow up / down ) available for each setting. Pressing these keys alters the value set. The alterations
are shown on the display and in the status line.
Display
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2.5.1.1 THRESHOLDThe unit is fitted with an automatic gain control for processing the data. It is activated, whenever the
unit is switched ON. The THRESHOLD setting only influences the presentation of information on the
display. It can be set within a range of 0 to 10 ( 0 = lowest, 10 = highest step ).
If the sea bed echoes appear to be too weak, the THRESHOLD setting should be increased, in order
to achieve a clear presentation. If a lot of "noise" appears on the display, the threshold level must be
reduced. The threshold setting is indicated in the status line, at the bottom of the display area. The
setting must be altered until such time as a satisfactory presentation is achieved.
2.5.1.2 RANGE The range should be set to correspond to the depth to be expected. If for example the indicated depth
is 30 m, the 50 m range will give a better resolution than the 500 m range. It is altered in the same
way as the THRESHOLD and RANGE. There is a choice of 10 range settings available: 10 m only
by 200 kHz, 25, 50, 100, 250, 500 m by 12 and 200 kHz and only by 12 kHz 1000, 3000, 6000 and
10000 m. The range is dependent upon the operating frequency.
2.5.1.3 DIMThe display and keyboard background lighting can be adjusted in 32 steps. This allows the back-
ground lighting to be adapted to suit the environmental brightness. Increase the brightness of the
background lighting by pressing the UP key, decrease it by pressing the DOWN key.
2.5.1.4 CURSOR KEYSThese serve to mark menu items for selection within a menu and to set WD 1 12 kHz, WD 2 200 kHz
and WD 1 12 kHz + WD 2 200 kHz directly.
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2.6 General Information Regarding the MENU HydroStar 4900
The menu programme is called up by pressing the ENTER key.
Press the ENTER key, the menu programme appears on the display (Figure 2-19 ).
Figure 2-19 Main Menu
2.6.1 MENÜ Display Mode 2.6.1.1 MENU Display Mode - ES WD 1 12 kHz DBKPress the ENTER key, the menu programme appears on the display.
Bring the cursor to the item Display Mode by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with menu items ES, Large Depth Display, Range
Marks and Lin or LOG.
Bring the cursor to the item ES by pressing the cursor keys [ up or down ]. With a single channel
survey echosounder, ES WD1appears weakly.
With a twin channel survey echosounder, the display ES appears.
Press the ENTER key. Sub-menu 1 appears, with items WD 1 12 kHz, WD 2 200 kHz and WD 1
12 kHz + WD2 200 kHz. Also stand the Information which frequency are selected for the transducer
(12 kHz or 200 kHz).
Press the ENTER key.
Bring the cursor to the item WD 1 12 kHz by pressing the cursor [ up or down ].
The menu programme disappears from the display. Transducer 1 is now in use. When the item sel-
ected in sub-menu 1 is confirmed, a tick appears alongside it, (Figure 2-20 ).
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Figure 2-20 Menu Display Mode „ ES, WD 1 12kHz
If the system is fitted with two transducers, it is possible to select the second transducer using this
menu. If necessary, both transducers can be simultaneously selected using this menu. If this opera-
ting mode is selected, the display presentation also changes. The echoes are then presented on a
split display. In addition, two numerical depth indication fields appear.
Figure 2-21 Menu Display Mode „ ES, WD 1 12kHz + WD 2 200kHz
2.6.1.2 MENU Display Mode - Large Depth DisplayPress the ENTER key, the menu programme appears on the display.
Bring the cursor to the item Display Mode by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with menu items ES, Large Depth Display, Range
Marks and Lin.
Bring the cursor to the item Large Depth Display by pressing the cursor keys [ up or down ].
Press the ENTER key.
The menu programme disappears from the display.
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Figure 2-22 Menu Display Mode „ Large Depth Display“
After pressing the ENTER key, a window, with an enlarged numerical depth indication, appears at
the bottom of the display (Figure 2-23).
When the item selected in sub-menu 1 is confirmed, a tick appears alongside it.
Figure 2-23 Menu Display Mode „ Large Depth Display WD1 12 kHz DBK
If the operating mode WD 1 + WD 2 is selected, two large windows appear Figure 2-24. The upper
window relates to WD 2, the lower window to WD 1.
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Figure 2-24 Menu Display Mode „ Large Depth Display WD 1 12kHz + WD 2 200kHz
2.6.1.3 MENU Display Mode - Range MarksPress the ENTER key, the menu programme appears on the display.
Bring the cursor to the item Display Mode by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with menu items ES, Large Depth Display, Range
Marks and Lin.
Bring the cursor to the item Range Marks by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu appears, with items Mode 1 and Mode 2.
Bring the cursor to the item Mode 1 by pressing the cursor keys [ up or down ].
Figure 2-25 Menu Display Mode: „ Range Marks Mode 1 „
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Press the ENTER key.
The menu programme disappears from the display.
Reference scale marking lines appear over the whole width of the display, ( Figure 2-26 ).
Figure 2-26 Menu Display Mode „ Range Marks Mode 1 „
If Mode 2 is selected, in the same way as for Range Marks - Mode 1, the reference scale markings
appear at the right-hand side of the display. ( Figure 2-27 )
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Figure 2-27 Menü Display Mode „ Range Marks Mode 2 „
2.6.2 MENU Alarm
2.6.2.1 MENU Alarm - Alarm activePress the ENTER key, the menu programme appears on the display.
Bring the cursor to the item Alarm by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears with the items Alarm active, Test, Acoustic alarm, WD
upper limit and WD lower limit.
Bring the cursor to the item Alarm active by pressing the cursor keys [ up or down ].
Figure 2-28 Menu Alarm „ Alarm active“
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Press the ENTER key.
The menu programme disappears from the display.
When selection is confirmed, the alarm circuit is activated. When activated, the two red alarm marker
lines appear on the display, If the alarm circuit is not activated, the alarm limits can be set via the
items WD upper limit and/ or WD lower limit.
When activated, a tick appears alongside "Alarm active".
2.6.2.2 MENU Alarm - TestPress the ENTER key, the menu programme appears on the display.
Bring the cursor to the item Alarm by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears with the items Alarm active, Test, Acoustic alarm, WD
upper limit and WD lower limit.
Bring the cursor to the item Test by pressing the cursor keys [ up or down ].
Figure 2-29 Menu Alarm „ Test“
Press the ENTER key. If the ENTER key is now pressed, a test signal will be generated. This signal
is audible for 3 seconds and ceases automatically.
The menu programme disappears from the display.
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2.6.2.3 MENU Alarm - Acoustic alarmPress the ENTER key, the menu programme appears on the display.
Bring the cursor to the item Alarm by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears with the items Alarm active, Test, Acoustic alarm, WD
upper limit and WD lower limit.
Bring the cursor to the item Acoustic alarm by pressing the cursor keys [ up or down ].
Figure 2-30 Menu Alarm „ Acoustic alarm
Press the ENTER key. If the ENTER key is now pressed, the acoustic alarm will be activated. When
activated, a tick appears alongside "Acoustic alarm".
The menu programme disappears from the display. To de-activate the acoustic alarm, proceed in the
same order as for activation.
2.6.2.4 MENU Alarm - WD upper limitPress the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Alarm by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears with the items Alarm active, Test, Acoustic alarm, WD
upper limit and WD lower limit.
Bring the cursor to the item WD upper limit by pressing the cursor keys [ up or down ].
The upper limit can be de-activated by setting it to 0 or by pressing the "SPEAKER OFF" key (Figure
2-10 ). When the menu is then called up again, the alarm depth is set to starting value of 1 m.
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Figure 2-31 Menu Alarm „ WD upper Limit“
Press the ENTER key, the „ WD Alarm upper limit“ ( e.g. 10 m) setting window appers on the dis-
play.
Figure 2-32 Setting Window „ WD: Alarm upper Limit“
The upper alarm limit is set by pressing the cursor keys [ up or down ]. The setting range is from 0 to
995 m, in 1 m steps, using the cursor keys [ up or down ]. By system configuration max. 10000 m
from 0 to 3405 m.
Press the ENTER key.
The menu programme disappears from the display and the red alarm marker line appears on the dis-
play at the required depth.
2.6.2.5 MENU Alarm - WD lower limitPress the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Alarm by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears with the items Alarm active, Test, Acoustic alarm, WD
upper limit and WD lower limit.
Bring the cursor to the item WD lower limit by pressing the cursor keys [ up or down ].
The WD lower limit can be de-activated by pressing the "SPEAKER OFF" key (Figure 2-10 ). When
the menu is then called up again, the alarm depth is set to one metre below the end the of depth range
in use.
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Figure 2-33 Menu „WD lower limit“
Press the ENTER key, the "WD Alarm lower limit" (e.g. 99 m) setting window appears on the dis-
play.
Figure 2-34 Setting Window „ WD: Alarm lower limit [ m ]
The lower alarm limit is set by pressing the cursor keys [ up or down ]. The range of adjustment is
from 3 to 1000 m, using the cursor keys [ up or down].
Press the ENTER key.
The menu programme disappears from the display and the red alarm marker line appears on the dis-
play at the required depth. Both lines can only be set, if there is a minimum difference of 3 m between
them.
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Figure 2-35 Alarm Marker and optical alarm presentation
2.6.3 MENU Sonar Parameter
2.6.3.1 MENU Sonar Parameter- Pulse Sequence - ContinuousPress the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Sonar Parameter by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items Pulse Sequence, Pulse Power, Pulse
Length, Autophase and Blocking Depth.
Bring the cursor to the item Pulse Sequence by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears with items Continuous , LOG and External Trigger.
Bring the cursor to the item Continuous by pressing the cursor keys [ up or down ].
OpticalAlarm
UpperLimit
LowerLimit
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Figure 2-36 Menu Sonar Parameter „ Pulse Sequence- Continuous“
Press the ENTER key.
The menu programme disappears from the display.
When the unit is initially switched ON, it is automatically in the "Continuous" mode. The system
works only in Continuous- Mode. If the system on NAV - Mode, and the submenu Continuous is sel-
ected, after pressing the ENTER key the Continuous mode is selected.
2.6.3.2 MENU Sonar Parameter - Pulse Sequence - External TriggerPress the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Sonar Parameter by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items Pulse Sequence, Pulse Power,Pulse
Length, Autophase and Blocking Depth.
Bring the cursor to the item Pulse Sequence by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears with items Continuous, LOG and External Trigger.
Bring the cursor to the item External Trigger by pressing the cursor keys [ up or down ].
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Figure 2-37 Menu Sonar Parameter „ Pulse Sequence- External Trigger“
Press the ENTER key, the "Trigger delay" setting window appears on the display.
Figure 2-38 Setting Window „ Trigger delay „
Figure 2-39 Window of EXTERNAL Information
Information Window EXTERNAL
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The Trigger delay can be set in steps of 1 ms by pressing the cursor keys [ up or down ].
Press the ENTER key.
The menu programme disappears from the display.
This setting is required, if the transmission pulse is to be triggered by an external Sonar system. The
sounding trigger and transmission pulse delay can be set within a range of 0 to 50 ms. This setting
can be set to 0 immediately by pressing the "SPEAKER OFF" key (Figure 2-10 ).
2.6.4 Sonar Parameter MENU - Pulse Power
2.6.4.1 Sonar Parameter MENU - Pulse Power - AutomaticPress the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Sonar Parameter by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items Pulse Sequence, Pulse Power, Pulse
length, Autophase and Blocking Depth.
Bring the cursor to the item Pulse Power by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears, with the items Automatic, Increase and Decrease.
Bring the cursor to the item Automatic by pressing the cursor keys [ up or down ].
Figure 2-40 Sonar Parameter Menu, " Pulse Power - Automatic "
If the menu item Automatic is selected, the transmission power is automatically controlled to match
the Range selected.
If the transmission power is controlled manually, attention must be paid to the fact, that a suitable
range is also selected.
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12 kHz
In the Low Power mode, the power is 1 W, in Medium Power 46 W and in High Power approx.
2000 W.
200 kHz
In the Low Power mode, the power is 1 W, in Medium Power 16 W and in High Power approx. 200 W.
NOTE: If the smallest range is selected and the highest transmission power is used, there is
a danger, that too many sea bed echoes occur, causing multiple echoes to appear on
the display.
WARNING: Whenever the range or active transducer is altered, the Pulse Power is automatically
reset.
2.6.4.2 Sonar Parameter MENU - Pulse Power - IncreasePress the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Sonar Parameter by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items Pulse Sequence, Pulse Power, Pulse
length, Autophase and Blocking Depth.
Bring the cursor to the item Pulse Power by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears, with the items Automatic, Increase and Decrease.
Bring the cursor to the item Increase by pressing the cursor keys [ up or down ].
Figure 2-41 Sonar Parameter Menu, " Pulse Power - Increase"
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If the menu item Increase is selected, the transmission power is automatically controlled to match the
Range selected.
No Information window on the Display.
2.6.4.3 Sonar Parameter MENU - Pulse Power - DecreasePress the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Sonar Parameter by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items Pulse Sequence, Pulse Power, Pulse
length, Autophase and Blocking Depth.
Bring the cursor to the item Pulse Power by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears, with the items Automatic, Increase and Decrease.
Bring the cursor to the item Decrease by pressing the cursor keys [ up or down].
Figure 2-42 Sonar Parameter Menu, " Pulse Power - Decrease"
If the menu item Decrease is selected, the transmission power is in medium power controlled to
match the Range selected. After pressing the Range key the system works in auto power.
Information window on the Display.
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Figure 2-43 Information window "Pulse Power: Decrease"
2.6.5 Sonar Parameter MENU - Pulse Length
2.6.5.1 Sonar Parameter MENU - Pulse Power - AutomaticPress the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Sonar Parameter by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items Pulse Sequence, Pulse Power, Pulse
length, Autophase and Blocking Depth.
Bring the cursor to the item Pulse Length by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears, with the items Automatic, Increase and Decrease.
Bring the cursor to the item Automatic by pressing the cursor keys [ up or down ].
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Figure 2-44 Sonar Parameter Menu, " Pulse Length - Automatic "
If the menu item Automatic is selected, the pulse length is automatically controlled to match the Ran-
ge selected.
2.6.5.2 Sonar Parameter MENU - Pulse Length - IncreasePress the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Sonar Parameter by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items Pulse Sequence, Pulse Power, Pulse
length, Autophase and Blocking Depth.
Bring the cursor to the item Pulse Length by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears, with the items Automatic, Increase and Decrease.
Bring the cursor to the item Increase by pressing the cursor keys [ up or down ].
Figure 2-45 Sonar Parameter Menu, " Pulse Length - Increase"
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If the menu item Increase is selected, the next higher is selected controlled to match the Range sel-
ected.
Information window on the Display.
Figure 2-46 Information window: "Pulse Length"
2.6.5.3 Sonar Parameter MENU - Pulse Length - DecreasePress the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Sonar Parameter by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items Pulse Sequence, Pulse Power, Pulse
length, Autophase and Blocking Depth.
Bring the cursor to the item Pulse Length by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears, with the items Automatic, Increase and Decrease.
Bring the cursor to the item Decrease by pressing the cursor keys [ up or down ].
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Figure 2-47 Sonar Parameter Menu, " Pulse Length - Decrease"
If the menu item Decrease is selected, the next lower pulse length is controlled to match the Range
selected. After pressing the Range key the system works with automatic pulse length again.
Information window on the Display.
2.6.6 Sonar Parameter MENU - " Autophase "
2.6.6.1 Sonar Parameter MENU - " Autophase - OFF "Press the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Sonar Parameter by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items Pulse Sequence, Pulse Power, Pulse
length, Autophase and Blocking Depth.
Bring the cursor to the item Autophase by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears, with the items OFF, Automatic and Manual.
Bring the cursor to the item OFF by pressing the cursor keys [ up or down ].
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Figure 2-48 Sonar Parameter Menu, " Autophase OFF "
Press the ENTER key.
The menu programme disappears from the display.
This operating mode ensures that the sea bed echo lies within the display range, if the measurement
range is altered. The setting is made using the RANGE keys [ up or down ].
2.6.6.2 Sonar Parameter MENU - " Autophase - Automatic "Press the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Sonar Parameter by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items Pulse Sequence, Pulse Power, Pulse
Length, Autophase and Blocking Depth.
Bring the cursor to the item Autophase by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears, with the items OFF, Automatic and Manual.
Bring the cursor to the item Automatic by pressing the cursor keys [ up or down ].
NOTE: Autophase is not possible in RangeX. If the function "Autophase" is selected, it
is not possible to select Range X.
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Figure 2-49 Sonar Parameter Menu, " Autophase Automatic "
Press the ENTER key.
The menu programme disappears from the display.
The sea bed signal is automatically searched for in this operating mode. The start of range also alters
automatically. The system thus follows the contour of the sea bed automatically. The search se-
quence runs up within 10% of the start of the range. The RANGE keys are also enabled when this
operating mode is in use. If a measuring range change occurs, the start of range will be automatically
shifted, so that the momentary sea bed echo is projected into the centre of the display ( zoom effect).
Transducer switching is inhibited in this operating mode.
Figure 2-50 Display Presentation : Autophase Automatic
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2.6.6.3 MENU Sonar Parameter - " Autophase - Manual "Press the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Sonar Parameter by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items Pulse Sequence, Pulse Power, Pulse
Length, Autophase and Blocking Depth
Bring the cursor to the item Autophase by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears, with the items OFF, Automatic and Manual.
Bring the cursor to the item Manual by pressing the cursor keys [ up or down ].
Figure 2-51 Sonar Parameter Menu " Autophase Manual "
Press the ENTER key. The "Range Start" setting window appears on the display. The range of ad-
justment is between 0 and 950 m [1000m ]. The setting is made in steps of 1 m, using the cursor keys
[ up or down ].
Figure 2-52 Setting Window: " Range Start"
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Figure 2-53 Display Presentation: Auto: Manual
Press the ENTER key. The menu programme disappears from the display.
2.6.6.4 Sonar Parameter MENU - " Blocking Depth "Press the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Sonar Parameter by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items Pulse Sequence, Pulse Power, Pulse
Length, Autophase and Blocking Depth
Bring the cursor to the item Blocking Depth by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears, with the items OFF and Manual.
Bring the cursor to the item Manual by pressing the cursor keys [ up or down ].
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Figure 2-54 Sonar Parameter Menu " Blocking Depth, Manual "
Press the ENTER key. The "Blocking Depth" setting window appears on the display. The range of
adjustment see table 2 - 1. The setting is made in steps of 1 m,.1 ft and 1 fms using the cursor keys
[ up or down ]. In addition, a red rectangle, with the blocking depth setting, appears at the right-hand
side of the display, Fig. 2-51.
Blocking depth
Table 2-1 Blocking depth
Range m
I 0 to 8
II 0 to 20
III 0 to 40
IV 0 to 80
V 0 to 200
VI 0 to 400
VII 0 to 800
VIII 0 to 2400
IX 0 to 4800
X 0 to 8000
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Figure 2-55 Blocking Depth Presentation
Figure 2-56 Setting Window : " Blocking Depth"
Press the ENTER key. The menu programme disappears from the display. This setting can be set
directly to 0 by pressing the "SPEAKER OFF" key (Figure 2-10).
The Blocking Depth is set, in order that depth finding only starts from the Blocking Depth.
(suppression of noise down to the Blocking Depth).
If the setting OFF is selected, depth finding starts directly from the base of the transducer.
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2.6.7 MENU PROPERTIES
2.6.7.1 MENU Properties - " User Setting - Save "Press the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Properties by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items User Setting, Sound Velocity, Date +
Time, Reverberation, Draft, Depth Mode, Metrics and Transducer Correction.
Bring the cursor to the item User Setting by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears, with items Save 1 to 4.
Bring the cursor to the item Save by pressing the cursor keys [ up or down ].
Figure 2-57 Menu Properties „ User Setting - Save 1“
Press the ENTER key, an additional window, showing storage spaces 1 to 4, appears on the screen.
The parameters set are stored, by pressing the ENTER key.
Press the ENTER key. The menu programme disappears from the display.
2.6.7.2 MENU Properties - " User Setting - Load "Press the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Properties by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items User Setting, Sound Velocity, Date +
Time, Reverberation, Draft, Depth Mode, Metrics and Transducer Correction.
Bring the cursor to the item User Setting by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears, with items Load 1 to 4 and Default.
Bring the cursor to the item Load by pressing the cursor keys [ up or down ].
Press the ENTER key, an additional window appears on the screen showing storage numbers 1 to
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4 and Default.
When the ENTER key is pressed, the corresponding storage space, 1 to 4, will be called up.
Press the ENTER key. The menu programme disappears from the display.
Figure 2-58 Menu Properties „ User Setting - Load 1“
2.6.7.3 MENU Properties - " Sound Velocity "Press the ENTER key. The menu programme appears on the display:
Bring the cursor to the item Properties by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items User Setting, Sound Velocity, Date +
Time, Reverberation, Draft, Depth Mode and Transducer Correction.
Bring the cursor to the item Sound Velocity by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears, with the items Automatic and Manual.
Figure 2-59 Menu Properties „ Sound Velocity
If the item "Automatic" is selected, the data from the measurement sensors will be used by the sy-
stem.
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NOTE: The item "Automatic" can only be selected, if the system is connected to the corre-
sponding sensors.
Press the ENTER key. The "Sound Velocity" setting window appears on the display.
Figure 2-60 Setting Window „ Sound Velocity“
Press the ENTER key. The menu programme disappears from the display.
The range of adjustment is between 1400 and 1650 m/s. The setting is made in steps of 1 m/ s, using
the cursor keys [ up or down ].
2.6.7.4 MENU Properties - " Date + Time "Press the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Properties by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items User Setting, Sound Velocity, Date +
Time, Reverberation, Draft, Depth Mode, Metrics and Transducer Correction.
Bring the cursor to the item Date + Time by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears with items Date, Time and External.
Bring the cursor to the item Date by pressing the cursor keys [ up or down ].
Figure 2-61 Menu Properties „ Date + Time“
Press the ENTER key. The "Date" setting window appears on the display: Year
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Figure 2-62 Setting Window „ Date: Year“
The year can be set in steps of 1 year, using the cursor keys [ up or down ].
Press the ENTER key. The "Date" setting window appears on the display: Month
Figure 2-63 Setting Window „ Date: Month
The month can be set in steps of 1 month, using the cursor keys [ up or down ].
Press the ENTER key. The "Date" setting window appears on the display: Day
Figure 2-64 Setting Window „ Date: Date
The day can be set in steps of 1 day, using the cursor keys [ up or down ].
Press the ENTER key. The menu programme disappears from the display.
2.6.7.5 MENU Properties - " Date + Time "Press the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Properties by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items User Setting, Sound Velocity, Date +
Time, Reverberation, Draft, Depth Mode, Metrics and Transducer Correction.
Bring the cursor to the item Date + Time by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears with items Date, Time and External.
Bring the cursor to the item Time by pressing the cursor keys [ up or down ].
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Figure 2-65 Menu Properties“ Date + Time“
Press the ENTER key. The "GMT - Time: Hour" setting window appears on the display: Hour
Figure 2-66 Setting Window „ GMT- Time: Hour „
The hour can be set in steps of 1 hour, using the cursor keys [ up or down ].
Press the ENTER key. The "GMT - Time: Hour" setting window appears on the display: Minute
Figure 2-67 Setting Window „ GMT- Time: Minute „
The minutes can be set in steps of 1 minute, using the cursor keys [ up or down ].
Press the ENTER key. The menu programme disappears from the display.
NOTE: If data are taken from an external source (GPS or Data Distributor) and the system is
set to external data, data and time settings are latched, i.e. they can not be altered
manually.
NOTE: If the English language is chosen as the factory setting, the time will be displayed in
the 12 hour format, showing AM / PM. If the German language is set, the time will be
displayed in the 24 hour format.
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2.6.7.6 MENU Properties - " Date + Time "Press the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Properties by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items User Setting, Sound Velocity, Date +
Time, Reverberation, Draft, Depth Mode, Metrics and Transducer Correction.
Bring the cursor to the item Date + Time by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears with items Date, Time and External.
Bring the cursor to the item External by pressing the cursor keys [ up or down ].
Press the ENTER key. The menu programme disappears from the display. The time and date are
regenerated by an external trigger in this operating mode. The time and date are controlled by the
unit itself.
2.6.7.7 Properties MENU - " Reverberation "Press the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Properties by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items User Setting, Sound Velocity, Date +
Time, Reverberation, Draft, Depth Mode, Metrics and Transducer Correction.
Bring the cursor to the item Reverberation by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears, with the items Store All, Store Range, Manual, Sup-
pression WD1 and Suppression WD2.
Bring the cursor to the item Store All by pressing the cursor keys [ up or down ]. The noise field for
the current sounding mode is measured, at between 0 and 7.5 m from the surface of the transducer
and stored by pressing the ENTER key. The measurement can be made in the WD 1 and WD 2 mo-
des.
Figure 2-68 Menu Properties - " Reverberation "
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In sub- menu 1, bring the cursor to the Item Store All using the cursor [ up or down] and confirm by
pressing the ENTER key. The display appears on the red depth display: Reverberation Measure-
ment. The measurement is shown down on the display.
Figure 2-69 Information Window "Reverberation Measurement"
2.6.7.8 Storage Range Bring the cursor to the item Store Range by pressing the cursor keys [ up or down ].
Figure 2-70 Menu Properties. Reverberation "Storage Range"
In sub- menu 1, bring the cursor to the Item Store Range using the cursor [ up or down ] and confirm
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by pressing the ENTER key. The storing of reverberation is only for the selected range.
2.6.7.9 Storage Manual
Figure 2-71 Menu Properties. Reverberation "Storage Manual"
If the echograph is still afflicted with noise after storing, it is still possible to set the reverberation ma-
nually. To do this, Reverberation must be called up from the menu. In sub-menu 1, bring the cursor
to the item Manual using the cursor keys [ up or down ] and confirm by pressing the ENTER key.
The setting window appears on the display: Reverberation ( Blocking depth).
Figure 2-72 Setting Window: „ Reverberation ( Blocking Depth m )“
The Blocking depth can be set in steps of one dm, using the cursor keys [ up or down ]. The range
of adjustment is between 0 and 1 m, in steps of 0.1 m. If the Reverberation is set to below 0.0 m, the
word Storage appears in the setting window ( = reverberation suppression using the stored data
storing).
Figure 2-73 Setting Window: „ Reverberation ( Blocking Depth) Storage “
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If Storage is selected, the reverberation measurement will take effect for the transducer, otherwise
the Blocking Depth set will apply. If the system is equipped with two transducers, storage must also
be carried out for the second transducer.
Press the ENTER key. The menu programme disappears from the display. The information will be
stored at the same time.
NOTE: Storing reverberation manually should be carried out in all ranges.
2.6.7.10 MENU Properties - " Draft "Press the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Properties by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items User Setting, Sound Velocity, Date +
Time, Reverberation, Draft, Depth Mode, Metrics and Transducer Correction.
Bring the cursor to the item Draft by pressing the cursor keys [ up or down ].
Figure 2-74 Menu Properties „ Draft“
Press the ENTER key. The Draft setting window appears on the display.
Figure 2-75 Setting Window „ Draft“
The Draft setting is used to set the transducer installation depth compensation. This setting makes it
possible to perform measurements from the surface of the water to the sea bed. The range of adju-
stment is between 0 and 2999 cm.
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2.6.7.11 MENU Properties " Depth Mode"Press the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Properties by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items User Setting, Sound Velocity, Date +
Time, Reverberation, Draft, Depth Mode, Metrics and Transducer Correction.
Bring the cursor to the item Depth Mode by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears, with the items DBK and DBS.
Bring the cursor to the item DBK by pressing the cursor keys [ up or down ].
Figure 2-76 Menu Properties „ Depth Mode“
Press the ENTER key. The display presented the standard graphic.
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Figure 2-77 Depth Mode „ DBK“
The second measurement is DBS Mode.
Bring the cursor to the item Depth Mode by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears, with the items DBK and DBS.
Bring the cursor to the item DBS by pressing the cursor keys [ up or down ].
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Figure 2-78 Depth Mode „ DBS“
Press the ENTER key. The display presented the Standard graphic with the DBS line on the top of
the graphic.
2.6.7.12 MENU Properties " Metrics"Press the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Properties by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items User Setting, Sound Velocity, Date +
Time, Reverberation, Draft, Depth Mode, Metrics and Transducer Correction.
Bring the cursor to the item Metrics by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears, with the items Meter, Fathoms and Feet.
Bring the cursor to the item Meter by pressing the cursor keys [ up or down ].
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Figure 2-79 Properties Menu “ Meter“
Press the ENTER key. The display presented the standard graphic with Meter - Scale.
Figure 2-80 Standart graphic with Meter - Scale
The second Metric- Mode is Fathoms- Scale.
Bring the cursor to the item Metrics by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears, with the items Meter, Fathoms and Feet.
Bring the cursor to the item Fathoms by pressing the cursor keys [ up or down ].
Press the ENTER key. The display presented the standard graphic with Fathoms - Scale.
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Figure 2-81 Standart graphic with Fathoms - Scale
Bring the cursor to the item Metrics by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears, with the items Meter, Fathoms and Feet.
Bring the cursor to the item Feet by pressing the cursor keys [ up or down ].
Press the ENTER key. The display presented the standard graphic with Feet - Scale.
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Figure 2-82 Standart graphic with Feet - Scale
2.6.7.13 MENU Properties " Transducer Correction"Press the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Properties by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items User Setting, Sound Velocity, Date +
Time, Reverberation, Draft, Depth Mode, Metrics and Transducer Correction.
Bring the cursor to the item Transducer Correction by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears, with the item WD 1 [12 kHz] and WD 2 [200 kHz].
Bring the cursor to the item WD1 12kHz by pressing the cursor keys [ up or down ].
Figure 2-83 Menu Properties „ Transducer Correction
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In sub-menu 1, bring the cursor to the item WD1 12 kHz using the cursor keys [ up or down ] and
confirm by pressing the ENTER key. The setting window appears on the display: Keel correction.
Figure 2-84 Setting Window „ Keel correction „
The Keel correction can be set in steps of one cm, using the cursor keys [ up or down ]. The range
of adjustment is between 0 and 1999 cm.
This correction can be made for Transducer [ WD1] and Transducer [ WD2 ].
After setting press ENTER key, the display show a Warning Confirmation. Is the setting o.k. switch
off the system, the new setting is storage now.
Figure 2-85 Confirmation Window
2.6.8 MENU Data Storage
2.6.8.1 MENU Data Storage - " Show "Press the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Data - Storage by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears on the display, with items Show, Search and Clear.
Bring the cursor to the item Show by pressing the cursor keys [ up or down ].
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Figure 2-86 Menu „ Data Storage - Show“
Press the ENTER key. The SURVEY ECHOSOUNDER display presentation changes to a graphic
presentation. The Data Storage menu is used to gain access to data stored in the built-in cyclic me-
mory. This data can then be presented on the display. If a printer is connected, the momentary dis-
play contents can be printed out.
The following information can be taken from the presentation.
The date can always be seen at the top left-hand corner.
The status line is shown vertically on top of the presentation. The status line is at the left-hand side
to begin with. Whenever the status changes, a new status line appears. The status contains the fol-
lowing information.
1. Time
2. Longitude
NOTE: Only if data is available from a data distributor connected to the system. Otherwise only
zeroes appear.
3. Latitude ( see remark for Longitude )
4. Water Depth mode ( W1 + W 2)
5. The measurement range is identified by a horizontal line and is newly inscribed whenever changes
are made. The measurement range information appears in yellow lettering. The water depth is pre-
sented as a yellow line
6. If the alarm circuit is activated, a broad, green line appears at the bottom edge of the display.
7. If a depth alarm ( WD ) was triggered, a broad red line appears at the bottom edge of the display,
in place of the green line.
8. If the echosounder is controlled by the "External trigger" pulse sequence, a broad, light blue line
appears at the top edge of the display.
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9. If the Mark key is pressed, to mark an echo signal, a vertical line appears over the whole height of
the display. The time, at which the marker was set, is inscribed next to the line.
The recording can be scrolled through, using the RANGE UP + DOWN ( Fig. 26 ) keys.
When all information have been evaluated or printed out, normal survey echosounder presentation
can be called up via the menu. The menu is called up as described in Chapter 2.6.7.1 and the item
Abort appears in sub-menu 1
Press the ENTER key. The Data presentation disappears and the Survey echosounder presentation
re-appears on the display. The Survey echosounder presentation can also be recalled by pressing
the "ESCAPE" key.
2.6.8.2 MENU Data Storage - " Search "Press the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Data Storage by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears on the display, with items Show, Search and Clear.
Bring the cursor to the item Search by pressing the cursor keys [ up or down ].
Figure 2-87 Menu „ Data Storage - Search“
Press the ENTER key. The "Date" setting window appears on the display: Year
Figure 2-88 Setting Window „ Date: Year“
The year can be set in steps of 1 year, using the cursor keys [ up or down ].
Press the ENTER key. The "Date" setting window appears on the display: Month
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Figure 2-89 Setting Window „ Date: Month“
The month can be set in steps of 1 month, using the cursor keys [ up or down ].
Press the ENTER key. The "Date" setting window appears on the display: Day
Figure 2-90 Setting Window „ Date: Day“
The day can be set in steps of 1 day, using the cursor keys [ up or down ].
Press the ENTER key. The "Date" setting window appears on the display: GMT- Time: Hour
The clock can be set in steps of 1 hour, using the cursor keys [ up or down ].
Figure 2-91 Setting Window „ Date: Hour“
Press the ENTER key. A graphic presentation of the data storage information for the desired area,
which was searched for via this menu, appears on the display.
In order to return to normal operation, echosounding must be called up from the menu. The menu is
called up as described in Chapter 2.6.6.1 and the item Abort appears in sub-menu 1
The recording can be scrolled through, using the RANGE UP + RANGE DOWN keys.
Press the ENTER key. The Data presentation disappears and the Survey Echosounder presentation
re-appears on the display.
NOTE: It is not possible to call up the test mode in either the Data Storage or Search modes.
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2.6.8.3 MENU Data Storage - " Clear "Press the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Data Storage by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears on the display, with items Show, Search and Clear.
Bring the cursor to the item Clear by pressing the cursor keys [ up or down ].
Figure 2-92 Menu „ Data Storage - Clear“
After pressing the ENTER key, a warning message is displayed:
Figure 2-93 Warning Message for „ Data Storage - Clear“
When the ENTER key is now pressed, all information will be erased from the cyclic memory. The
show function is then disabled for approx. 15 minutes. If "Data Storage - Show" is called up before
the 15 minutes have expired, a message appears saying "Not sufficient data".
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Figure 2-94 Message „ Not surfficient data“
2.6.8.4 MENU PRINT Press the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Print by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items Hardcopy and Unlimited.
Figure 2-95 Menu Print
After pressing the ENTER key, the contents of the current display, without the menu, will be printed
out. In the position unlimited, in this mode a automatically print out of a new completed picture is pos-
sible.
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2.6.9 MENU Testmode 2.6.9.1 MENU Testmode - "Built In Test "Press the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Testmode by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items Built In Test, Oscilloscope, Gain, Key
Gain, Offline BITE, SW Reset and Service.
Bring the cursor to the item Built In Test by pressing the cursor keys [ up or down ].
Figure 2-96 Menu „ Testmode - Built In Test“
With Built In Test, an automatic test procedure is initiated. The following tests are carried out:
ONLINE - Test
Various monitoring routines run in the background, during normal operations. In order to detect pos-
sible malfunction ( e.g. temperatures, supply voltages ) the corresponding error code will be shown
in the status line when relevant. If more than one fault/error is present, the fault/error with the highest
priority will be displayed in the status line. This highest priority fault/error will be stored in the data
memory every "TIMESTEP" and is also visible when scrolling through the memory.
Built In Test
If the Built In Test function is called up via the sub-menu, a list of all measuring points in plain text will
appear, showing their current status.
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Figure 2-97 Display Presentation of the items tested by the Built In Test
2.6.9.2 MENU Testmode - " Oscilloscope "Press the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Testmode by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items Built In Test, Oscilloscope, Gain, Key
Gain, Offline BITE, SW Reset and Service.
Bring the cursor to the item Oscilloscope by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears, with the items None and Rectified Echo.
Bring the cursor to the item Rectified Echo by pressing the cursor keys [ up or down ].
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Figure 2-98 Menu „ Testmode - Oscilloscope - Rectified Echo“
When the menu item TESTMODE - Oscilloscope - Rectified Echo is selected, the oscilloscope pre-
sentation, with echo signal, appears on the display. The presentation depends on depth and time.
Figure 2-99 Oscilloscope - Echo Signal Presentation“
Presentation of the rectified echo is only possible on the master unit. No water depth is indicated in
the information box, see Figure 2-99 , the word "Oscilloscope Mode" appears in its place.
After pressing the ENTER key, the menu appears, with items Print, Testmode, LCD Test and About.
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This provides the option of printing out the graphic presentation. When the "ESCAPE" key is pressed,
the unit automatically returns to the echosounding mode.
2.6.9.3 MENU Testmode - " Key Gain "Press the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Testmode by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items Built In Test, Oscilloscope, Gain, Key
Gain, Offline BITE, SW Reset and Service.
Bring the cursor to the item Key Gain by pressing the cursor keys [ up or down ].
Press the ENTER key, the THRESHOLD keys [ up or down ] are enabled and it is now possible to
alter the gain factor manually. The word Gain appears in the status line in red lettering. If the Test-
mode menu is called up again, Key Threshold appears in the sub-menu. The function of the THRES-
HOLD keys is reset by pressing the ENTER key.
Figure 2-100 Menu „ Testmode- Key Gain“
2.6.9.4 MENU Testmode - " Gain "Press the ENTER key. The menu programme appears on the display.
Bring the Cursor to the item Testmode by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items Built In Test, Oscilloscope, Gain, Key
Gain, Offline BITE, SW Reset and Service.
Bring the cursor to the item Gain by pressing the cursor keys [ up or down ].
Press the ENTER key. Sub-menu 1 appears, with the items Automatic and Manual.
Bring the cursor to the item Automatic by pressing the cursor keys [ up or down ].
This operating mode is in permanent operation. This means that the AGC operates automatically,
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monitored by the processor unit.
If Testmode Gain is selected and the Gain is controlled manually, the manual function can be swit-
ched OFF again by selecting Gain - Automatic.
Bring the cursor to the item Manual by pressing the cursor keys [ up or down ].
( Only possible, at single channel mode WD1or WD 2, not at dual channel mode WD1 + WD2)
Figure 2-101 Menu Testmode „Gain Manual“
By pressing the ENTER key, the AGC is switched OFF and the reception signal amplification control
must be carried out manually. After pressing the ENTER key, the GAIN setting window appears on
the display.
Figure 2-102 Setting Window „ GAIN“
The GAIN adjustment range is set using the cursor keys [ up or down ]. The range of adjustment
lies between - 80 and + 79 dB, in steps of 1 dB. This setting makes it possible to control the echo
signal manually, if reception is poor.
If the unit is switched ON again after being switched OFF, it automatically returns to the Automatic
mode.
The normal method of switching the manual mode OFF is via the menu.
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2.6.9.5 OFFLINE - Test
Before the Offline Test is started, a confirmation Window is displayed.
Figure 2-103 Confirmation Window
Two tips of tests are possible.
1. Completely test with transducer.
ATTENTION: By completely test a sound beam is transmitted in the water.
2. Test without active transducer.
This test is an passive test, the test points TVG, Transducers LF are not tested. The test points on
the graphic show no information.
In addition, the so called "Offline BITE" can also be started. When the Offline BITE- Test is started,
echosounding is first terminated and then all important assemblies are tested, for function and adhe-
rence to tolerances, with the aid of a synthetic test signal. The results are also presented in the form
of a list. This enables defective PCB's / components to be identified in case of a fault in the system.
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Figure 2-104 Display Offline BITE
2.6.9.6 MENU Test Mode - SW ResetPress the ENTER key. The menu programme appears on the display.
Bring the cursor to the item Testmode by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items Built In Test, Oscilloscope, Gain, Key
Gain, Offline BITE, SW Reset and Service.
Bring the cursor to the item SW Reset by pressing the cursor keys [ up or down ].
Press the ENTER key.
Figure 2-105 Menu „SW- Reset“
After Pressing the ENTER key, a Warning Window is displayed.
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Figure 2-106 Warning Window „ SW Reset“
This mode is only possible, when the system is not started exactly. For the reset starting press the
ENTER key.
2.6.9.7 MENU LCD Test Press the ENTER key. The menu programme appears on the display.
Bring the cursor to the item LCD Test by pressing the cursor keys [ up or down ].
Figure 2-107 Menu „ LCD Test“
Press the ENTER key. After pressing the ENTER key, the five basic colours ( black, blue, green, red
and white ) appear on the display. In addition, the complete display area will turn black, blue, green,
red and white in sequence. No echo presentation appears on the display during this test, the numeric
display continues to run. When the test is completed, the normal echo presentation returns to the dis-
play. This colour test is carried out to establish if there are any pixels missing from the display.
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2.6.9.8 MENU About Press the ENTER key, the menu programme appears on the display.
Bring the cursor to the item About by pressing the cursor keys [ up or down ].
Figure 2-108 Menu „ About“
Press the ENTER key. After pressing the ENTER key, the ABOUT window appears.
Figure 2-109 Window ABOUT
The following information can be seen in this window:
- Serial number
- Year of manufacturing
- SW- Version
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- DSP- SW Version
- Operation time
The ABOUT Window disappears when the ESCAPE key is pressed.
2.6.9.9 MENU Master Press the ENTER key, the menu programme appears on the display.
Bring the cursor to the item Master by pressing the cursor keys [ up or down ].
Press the ENTER key. The sub-menu appears, with items Console e.g. 1 and Make Available
Here it can be stipulated, which console is the master console.
Each console connected is given a number. The first console, belonging to the main unit, is always
given the number 0. Each additional console is given a consecutive number. If several are switched
ON, the corresponding numbers appear in the menu.
If the cursor is set to the menu item "Make Available", the privileges are enabled. This makes it pos-
sible to specify any one of the consoles connected to be the master. To enable this, Master - Fetch
must be selected at the corresponding console.
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PART 3
MAINTENANCE AND ONBOARD SERVICE
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LIST OF CONTENTS3 MAINTENANCE AND ONBOARD SERVICE............................................................... 119
3.1 Maintenance................................................................................................................. 119
3.1.1 General......................................................................................................................... 119
3.1.2 Warning Labels ........................................................................................................... 119
3.1.3 Warning Label for Connectors...................................................................................... 119
3.1.4 Special Tools, Measuring and Test Instruments .......................................................... 120
3.1.5 Maintenance................................................................................................................. 120
3.2 Maintenance Work ....................................................................................................... 121
3.2.1 Testing the Unit for Operability..................................................................................... 121
3.2.2 Two Weekly Checks..................................................................................................... 132
3.3 Repair........................................................................................................................... 133
3.3.1 Testing the Transmission Power .................................................................................. 134
3.3.2 Testing the Reception Signal ....................................................................................... 135
3.3.3 Transducer Insulation Test........................................................................................... 136
3.3.4 Cleaning the transducer .............................................................................................. 136
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LIST OF FIGURE Figure 3-1 Display Mode - NAV............................................................................................... 121
Figure 3-2 Presentations on the Display WD1 12kHz DBK + WD2 200kHz DBK.................. 122
Figure 3-3 Alarm Marker Lines................................................................................................ 123
Figure 3-4 Presentation of Built In Test................................................................................... 124
Figure 3-5 Offline BITE Test.................................................................................................... 125
Figure 3-6 Presentation of NAV- Mode ................................................................................... 131
Figure 3-7 Range Presentation ............................................................................................... 132
Figure 3-8 Fuse Inside the HydrStar 4900 .............................................................................. 133
Figure 3-9 Oscilloscope- „ Echo Signal Presentation“............................................................ 135
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3 MAINTENANCE AND ONBOARD SERVICE
3.1 Maintenance
3.1.1 GeneralThe system must not put into operation until it has been fully, correctly installed.
WARNING: Changes to settings must only be carried out by qualified technicians. If chan-
ges to settings have not been authorised, you must not continue.
WARNING: UNAUTHORISED CHANGES TO SETTINGS CAN IMPAIR THE SAFETY OF THE
SHIP AND LEAD TO LOSS OF LIFE OR LIMB.
CAUTION: The Naval safety regulations must be strictly adhered to when carrying out
maintenance and repair work.
3.1.2 Warning LabelsThe HydroStar 4900 is fitted with the following warning labels, which must be strictly observed.
3.1.3 Warning Label for Connectors
3.1.3.1 Warning Label for High Voltage
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3.1.3.2 Warning Label for ELECTROSTATIC SENSITIVE DEVICES
3.1.4 Special Tools, Measuring and Test InstrumentsNo special tools are required to carry out maintenance and repair work on the HydroStar 4900 Survey
Echosounding System.
3.1.5 Maintenance
3.1.5.1 Spare Parts and Consumables
3.1.5.2 Tools
Number Designation Part No. NATO No. Chapter
1 Fuse 4A 06 710 1400 3.3.1
2 Fuse 0.5A 06 710 1003 5920 121 70 1986 3.3.1
3 Polishing Cloth 3.2.2.1
4 Paint remover 3.3.6
5 Brush, soft 3.3.6
Number Designation Chapter
1 Allain key, 6mm 3.3.1
2 Screwdriver, 4 mm 3.3.1
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3.1.5.3 Measurement and Test Equipment
3.2 Maintenance Work
3.2.1 Testing the Unit for OperabilityThe unit should undergo a weekly operability test.
The following items must be tested.
- Switch the unit ON, using the ON / OFF key.
The system must start in the NAV - Mode
Figure 3-1 Display Mode - NAV
Number Designation Chapter
1 Insulation tester 500 VDC / 0 to 500 MOhm 3.3.5
2 Multimeter 3.3.1
3 Storage oscilloscope:Frequency: 0 to 100 MHz / 2 Probe 100 : 1 3.3.3
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- Call the menu programme up, using the ENTER key
- Bring the CURSOR to the item Display Mode and press the ENTER Key.
- Select WD1 12kHz DBK + WD2 200kHz DBK and press the ENTER key. Two echo presentations
must appear.
Figure 3-2 Presentations on the Display WD1 12kHz DBK + WD2 200kHz DBK
- Call the menu programme up, using the ENTER key
- Bring the CURSOR to the item Alarm and press the ENTER key.
- Bring the CURSOR to the item Alarm active and press the ENTER key. If upper and lower alarms
are set, 2 red lines appear on the display.
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Figure 3-3 Alarm Marker Lines
- Press the ENTER key.
- Bring the CURSOR to the item Alarm and press the ENTER key.
- Bring the CURSOR to the item Test and press the ENTER key. The acoustic alarm must sound for
approx. 5 seconds.
- Press the ENTER key.
- Bring the CURSOR to the item Testmode and press the ENTER key.
- Bring the CURSOR to the item Built In Test and press the ENTER key. The Built In Test items ap-
pear on the display ( Figure 3-4).
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Figure 3-4 Presentation of Built In Test
The following items are tested during the Built In Test
Temperature PGN 47 1 ( TMP ) 27.0 OK
Temperature EBE 177 ( TMP ) 27.0 OK
Temperature PGN 47 2 ( TMP ) 27.0 OK
+ 3.3 V Supply ( digital ) 3.3 OK
+ 5.0 V Supply ( digital ) 5.0 OK
+ 5.0 V Supply ( CompactPCI ) 5.0 OK
+12.0 V Supply ( analog ) 11.5 OK
- 12.0 V Supply ( analog ) -11,7 OK
+ 5 V Supply ( analog ) 5.0 OK
- 5.0 V Supply ( analog ) -5.0 OK
+ 48.0 V Supply ( Transmitter ) 48.3 OK
+ 24.0 V Supply ( auxiliary ) 23.5 OK
+ 12.0 V Supply ( auxiliary ) 12.0 OK
+ 5.0 V Supply ( auxiliary ) 5.0 OK
0.0/+12.0 V Blower ( off/on ) 0.0 OK
+ 24.0 V Supply ( DAZ ) 23.5 OK
+ 12.0 V Supply ( DRS ) 11.6 OK
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+ 12.0 V Supply ( LEG ) 11.5 OK
+ 12.0 V Supply ( DAZ ) 11.5 OK
+ 12.0 V Supply ( Display ) 12.2 OK
+ 5.0 V Supply ( Display ) 5.0 OK
+ 5.0 V Supply ( Keys ) 5.0 OK
+ 5.0 V Supply ( DAZ ) 5.0 OK
- 12.0 V Supply ( DAZ ) -11.5 OK
DAZ Alarm OFF
- Press the ENTER key.
- Bring the CURSOR to the item Testmode and press the ENTER key.
- Bring the CURSOR to the item Offline BITE and press the ENTER key. The Offline BITE Test items
appear on the display (Figure 3-5).
Figure 3-5 Offline BITE Test
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The following items are tested during the Offline BITE Test:
Offline BITE
Testpoint # 1: Configuration
Testpoint # 2: Operational Status
Testpoint # 3: Fan Off / On
Testpoint # 4: Alarm Off / On
Testpoint # 5: Test TVG
Testpoint # 6: Tx Voltage ( LF)
Testpoint # 7: Power Amplifier ( LF)
Testpoint # 9: Echosimulation (LF/ HF)
Test finished.
Start of evaluation.
TP #1: Configuration
Serial Number: 0050
DSP-SW Version: DSP-Ver. 1.7
Year of Manufacturing: 2002
SW Version: 2.8
WNR1
Type: LSE179
Frequency: 12000 Hz
Power: 2000 W
Resistance: 1500 Ohm
Correction: 0 cm
WNR2
Type: LSE140
Frequency: 200000 Hz
Power: 250 W
Resistance: 70 Ohm
Correction: 0 cm
Transducer 3 not installed.
Transducer 4 not installed.
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Type of ship: Surfaceship
Draft: 600 cm
Printer: one installed
Serial interfaces
COM5: not connected
COM6: not connected
COM7: not connected
COM8: not connected
COM9: not connected
COM10: not connected
Analog inputs
DRS1: not installed
LOG: not installed
Frequency inputs
LEG23-1: not installed
LEG23-2: not installed
Hardware Configuration
CE15 : does not exists
PGN47 (Channel 1) V3 : exists
PGN47 (Channel 2) V1 : exists
LV203 (Channel 1+2): exist
Harddisk : exists
TP #2: Operational Status
Temperature PNG47 1 (TMP).............. : 27.0 OK
Temperature EBE177 (TMP)............... : 27.0 OK
Temperature PNG47 2 (TMP).............. : 27.0 OK
+3.3 V Supply (digital)...........................: 3.3 OK
+5.0 V Supply (digital)...........................: 5.0 OK
+5.0 V Supply (CompactPCI)................:. 5.3 OK
+12.0 V Supply (analog).......................: 11.5 OK
-12.0 V Supply (analog)........................: -11.5 OK
+5.0 V Supply (analog).........................: 5.0 OK
-5.0 V Supply (analog)..........................: -5.0 OK
+48.0 V Supply (Transmitter)................: 48.2 OK
+24.0 V Supply (auxiliary).....................: 23.5 OK
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+12.0 V Supply (auxiliary).....................: 11.5 OK
+5.0 V Supply (auxiliary).......................: 5.0 OK
0.0/+12.0 V Blower (off/on)...................: off
+24.0 V Supply (DAZ)...........................: 23.5 OK
+12.0 V Supply (DRS)...........................: 11.5 OK
+12.0 V Supply (LEG)...........................: 11.5 OK
+12.0 V Supply (DAZ)...........................: 11.5 OK
+12.0 V Supply (Display).......................: 11.5 OK
+5.0 V Supply (Display).........................: 5.0 OK
+5.0 V Supply (Keys).............................: 5.0 OK
+5.0 V Supply (DAZ)..............................: 5.0 OK
-12.0 V Supply (DAZ).............................: -11.4 OK
DAZ Alarm.............................................: on
TP #3: Fan On/Off
Fan Off: 0 V OK
Fan On: 10 V OK
TP #4: Alarm Off/On
Alarm Off: 1 V OK
Alarm On: 12 V OK
TP #5: Test TVG
Ch1(Soll: 2750): 2740 OK
Ch 2(Soll: 2750): 2711 OK
Ch 3(Soll: no reference): 5134
Ch 4(Soll: no reference): 5134
TP #6: Tx Voltage (LF)
Channel 1: TX- Voltage
Ref. + 48 V: 46 V OK
Ref. + 100 V: 107 V OK
Ref. + 200 V: 200 V OK
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TP #7: Power Amplifier (LF)
WD 1 Power Amplifier ( LF)
Voltage ( + 46V ): 39 V OK
Voltage ( +100V ): 91 V OK
Voltage ( +200V ): 177 V OK
Current ( +100V ): - 624 mA Failure
Current ( +200V ): - 1262 mA Failure
Impedance ( + 46 V) - 155 Ohm Failure
Impedance ( + 100 V) - 145 Ohm Failure
Impedance ( + 200 V) - 140 Ohm Failure
Power ( + 46 V) - 5 Watt
Power ( + 100 V) - 28 Watt
Power ( + 200 V) - 112 Watt
TP #9: Echosimulation
Echo simulation Ch 1: 9547 cm Failure
Echo simulation Ch 2: 9547 cm Failure
Error analysis
Class B. Failure
LF Power Amplifier ( + 100 V), Current for WD 1 out of tolerance
Check: Transducer WD 1 not connected, EBE 180, EBE 177, PGN 47, PSE 42.
Class B. Failure
LF Power Amplifier ( + 200 V), Current for WD 1 out of tolerance
Check: Transducer WD 1 not connected, EBE 180, EBE 177, PGN 47, PSE 42.
Class B. Failure
LF Power Amplifier ( + 46 V), Impedance for WD 1 out of tolerance
Check: Transducer WD 1 not connected, EBE 180, EBE 177, PGN 47, PSE 42.
Class B. Failure
LF Power Amplifier ( + 100 V), Impedance for WD 1 out of tolerance
Check: Transducer WD 1 not connected, EBE 180, EBE 177, PGN 47, PSE 42.
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Class B. Failure
LF Power Amplifier ( + 200 V), Impedance for WD 1 out of tolerance
Check: Transducer WD 1 not connected, EBE 180, EBE 177, PGN 47, PSE 42.
Offline BITE finisched.
The following trouble points are shown on the status field:
Trouble codes
- #1: Timeout serielle Interface to DSP
- #2: CPU-Temperature to high
- #3: HW- Temperature to high
- #4: Supply 3.5 V (digital) out of tolerance
- #5: Supply 5.0 V (digital) out of tolerance
- #6: Supply 5.0 V (CPU) out of tolerance
- #7: Supply 12.0 V (analog) out of tolerance
- #8: Supply -12.0 V (analog) out of tolerance
- #9: Supply 5.0 V (analog) out of tolerance
- #10: Supply -5.0 V (analog) out of tolerance
- #11: Supply 48.0 V (Transmitter) out of tolerance
- #12: Supply 24.0 V (aux) out of tolerance
- #13: Supply 12.0 V (aux) out of tolerance
- #14: Supply 5.0 V (aux) out of tolerance
- #15: Supply 24.0 V (DAZ) out of tolerance
- #16: Supply 12.0 V (DRS) out of tolerance
- #17: Supply 12.0 V (LEG) out of tolerance
- #18: Supply 12.0 V (DAZ) out of tolerance
- #19: Supply 12.0 V (Display) out of tolerance
- #20: Supply 5.0 V (Display) out of tolerance
- #21: Supply 5.0 V (Keys) out of tolerance
- #22: Supply 5.0V (DAZ) out of tolerance
- #23: Error number does not exist
- #24: Error number does not exist
- #25: Error number does not exist
- #26: Error number does not exist
- #27: Error number does not exist
- #28: Error number does not exist
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- #29: Error number does not exist
- #30: Wrong number of data from DSP
- #31: False Header from DSP
- Press the ENTER key.
- Bring the CURSOR to the item LCD Test and press the ENTER key. No graphic presentation will
appear on the display, only the 5 basic colours black, blue, red, green and white will be seen. Upon
completion of this test, normal graphic presentation will return.
- Press the NAV key, the indication NAV mode will appear briefly on the display. The graphic presen-
tation on the display and the word NAV appears in the status line (Figure 3-6 ).
Figure 3-6 Presentation of NAV- Mode
- Press the NAV key for approx. 5 s, the indication Continuous Mode appears briefly on the display.
The graphic presentation starts to move again and the word Continuous appears in the status line
( Figure 3-6).
- Press the MARK key, a line appears on the display, from top to bottom, with the time alongside it.
- Press the RANGE up and down keys briefly, the indication Range m and the range selected
appears briefly on the display. At the same time, a line from top to bottom appears, marked with a 0
at the top and the range selected at the bottom. The designation WD1 also appears alongside the
line ( Figure 3-7 )
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Figure 3-7 Range Presentation
3.2.2 Two Weekly Checks- Testing the Unit for Completeness.
- Check, that the screws securing the housing are in place and check tighten them.
- Check all connectors are securely fitted.
- Check, that both handles are tightly fitted.
- Check, that spare fuses are available for the unit.
- Inspect the unit for mechanical damage and damage to the paint work.
- Repair damage with on board materials or initiate repair measures.
3.2.2.1 Cleaning the Unit- Clean the Hydrostar4900 , using a brush or duster.
- Clean all Plexiglas panes on the unit, using an anti-static cloth.
3.2.2.2 Testing the Unit Prior to Putting to SeaThe unit must undergo a functional check before the ship puts to sea.
Carry out a functional check in accordance with Section 3.2.1.
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3.3 Repair
3.3.0.1 Replacing FusesThe mains fuses F 1 and F 2 ( Mains) and the fuses F 3 to F 5 ( Heater)are located within the housing
of the HydrioStar 4900. The front panel must be removed, to gain access for replacement. Release
the 2 securing screws, using a 6 mm Allen key and pivot the front panel downwards. The fuses are
located in the top left-hand corner on the PCB rack. The fuse holders can be removed with the aid of
a screwdriver ( 4 mm ). Check the fuses, using a multimeter. Replace the defective fuse and close
the front panel of the unit.
Figure 3-8 Fuse Inside the HydrStar 4900
F3 F5 F4 F2 F1
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3.3.1 Testing the Transmission PowerNOTE: This test may only be carried out, if a transducer or Simulator is connected to the system.
Switch the HydroStar 4900 OFF. Open the Distribution Box or Connection Box AK 82 and connect
the oscilloscope using the 100 : 1 probe. Do not connect grounds. Measurement only in Differential
Mode.
WARNING: After switching the unit ON, there are voltages at the Connection Box terminals,
which present a danger to life.
Switch the unit ON by pressing the ON / OFF key . Select Range X ( 10000 m, 12 kHz ),
using the RANGE keys.
Measure the following value with the aid of the oscilloscope:
12 kHz with LSE 179
AK 82 pin 20 - 21 or 1 - 2
V = 840 to 1332 Vpp
t = 100 ms
200 kHz with LSE 140
V = 376 Vpp to 596 Vpp
t = 20 ms.
If the value measured lies outside the given values, this can be adjusted by means of potentiometer
R17 on the PGN 47.
If adjustment is necessary, switch the unit OFF by pressing the ON / OFF key. Then open the front
panel, and pull the transmission stage out after removing the protection plate. The transmission volta-
ge can now be aligned. After checking the transmission voltage, switch the unit OFF, replace the pro-
tection plate and close the front panel.
Remove the oscilloscope probes from the distribution box terminals and close it.
NOTE: Ensure that the seal for the cover is correctly seated.
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3.3.2 Testing the Reception SignalNOTE: This test may only be carried out, if a transducer or Simulator EDI is connected to the
system.
Test the reception path, using the unit's Testmode. Switch the unit ON by pressing the ON / OFF key.
Press the ENTER key, the main menu appears. Bring the CURSOR to item Testmode using the
CURSOR keys. Press the ENTER key and bring the CURSOR to item Oscilloscope. Press the
ENTER key again and the item Rectified Echo appears Press the ENTER key once again and the
oscilloscope presentation appears on the display.
Figure 3-9 Oscilloscope- „ Echo Signal Presentation“
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3.3.3 Transducer Insulation TestSwitch the unit OFF by pressing the ON / OFF key .
WARNING: Fasten a " DO NOT SET INTO OPERATION ..... ! " sign on the unit.
Loosen the screws securing the distribution box VK 10 or Connection Box AK 82 cover and remove
it. Disconnect the two transducer cable cores from the distribution box VK 10 or Connection Box
AK 82 terminals and carry out an insulation test as follows.
- Blue transducer connection - Ground > 1 MOhm
- Black transducer connection - Ground > 1 MOhm
The measurement must be made using a 500 VDC insulation tester.
NOTE: If the value lies below 1 Mohm, the transducer must be replaced.
Re-connect the two transducer cable cores to the terminals in the connection box AK 82 or Distribu-
tion Box VK 10 . Ensure that the seal for the cover is correctly seated.
NOTE: Reverse connection of the cores will have no influence upon the function of the system.
Remove the warning sign and return the unit to its original state.
3.3.4 Cleaning the transducerWhen the ship is in dry dock, clean and inspect the transducer.
Inspect the transducer for possible marine growth. If the transducer is affected by marine growth,
such growth must be removed using a soft brush and clean water. If the growth is difficult to remove
using a soft brush, a flat piece of wood ( spatula ) can be used to remove it.
WARNING: Never use a wire brush or metal scraper to remove growth from the transducer.
After cleaning the transducer, inspect the abrasion protector for damage. If this is damaged, the
transducer must be replaced. If there is damage to the abrasion protector, this can cause eddy cur-
rents, which will have a detrimental affect upon the display presentation.
NOTE: Always mask the transducer surface off when the ship's hull is painted. Upon completion of
work, the surface of the transducer must be painted by hand with anti-fouling, to avoid trapping air.
Painting the transducer surface applies not only to hull surface mounted transducers but also to
transducers installed behind an acoustic window.
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WARNING: Do not use normal ship's paint on the transducer, only use anti-fouling.
Remove old anti-fouling with paint remover and not with a scraper.