Page 1
Completed by (Name/Signature): ____________________________________ Date: _________
HiSeasNet Maintenance Visit Report
Ship Visited: R/V Oceanus
Ship Location/Port: Woods Hole, MA
Date(s) of work: September 15 – 18 , 2007
Work performed by: Karl Kapusta
Visit Purpose: Ku-Band Antenna Maintenance Visit and check tracking issues.
The ship had just returned from operation in the Mediterranean Ocean using a different satellite and Teleport
services. The Seatel antenna tracking system was changed back to operation on Satmex 5 but was not tracking
correctly. Major reported symptom was an AGC level lower than the Threshold level.
DAC 2200 was due to be replaced under warranty. The original controller had a faulty on/off power switch. The
ship left for the Mediterranean Ocean before a replacement could be delivered, so the change out occurred as
soon as the ship returned to Woods Hole as part of the regular maintenance visit.
Page 2
Completed by (Name/Signature): ____________________________________ Date: _________
Maintenance Checklist Antenna Equipment (ignore SeaTel/Ship-specific points with * for fixed antennas) Initials Action Notes/Discussion
KK Take photo of radome exterior * Complete
KK Verify air conditioner is in working order, repair as
needed *
N/A – no air conditioner installed
KK Confirm/Set final air conditioner temperature set point
(85 deg F) *
N/A
KK Inspect or change air conditioner filter * N/A
KK Visual inspection of radome (cracks, abrasions, caulk,
leaks, excessive grime, etc.), repair as needed *
Complete - no visible damage
KK Visual inspection of radome base, legs, and connection
to ship (rust, warping, etc.), repair as needed *
Complete – no visible damage or rust
KK Take photo of dome/hub interior Complete
KK Perform SeaTel or Vertex service bulletin
upgrades/repairs
Complete
KK Inspect reflector, repair as needed Complete – good condition
KK Check antenna balance, adjust as needed * Complete – balance OK
KK Inspect antenna equipment/frame for water or rust,
repair as needed
Complete – the isolation springs were
found to be loose. The bolts inside the
springs that hold the pedestal
mounting plate to the base plate were
loose. All bolts were checked and the
nuts were tightened. Seatel was
informed of this issue and supported
the tightening solution
KK Inspect antenna equipment/frame for loose weights and
hardware, repair as needed *
Complete – all weights & hardware
were tight and secure
KK Lube/grease/treat any joints as necessary N/A
KK Inspect antenna equipment and wiring harness for loose
cables, repair as needed
Complete
KK Verify power level to pedestal/motors Complete
KK Verify pedestal breaker works, repair as needed Complete
KK Verify acceptable antenna/controller Power-On Self
Test (POST)
Complete
KK Sweep antenna through entire Az and El ranges Complete
KK Take photo of rack gear front Complete
KK Record DAC/controller parameters Complete – see attached
KK Verify DAC parameters are accessible, correct, and
saved *
Complete
KK Verify that GPS inputs to DAC function (if GPS is
operational) *
Complete
KK Verify that gyro inputs to DAC function (if gyro is
operational) *
Complete
KK Verify correct conscan or dishscan settings, adjust as
needed *
Complete – Dishscan in operation
KK Verify reasonable blackout zone, adjust as needed * Complete – None programmed
Page 3
Completed by (Name/Signature): ____________________________________ Date: _________
Initials Action Notes/Discussion
KK Verify reasonable search limits or safety stops for given
location and satellite, adjust as needed
Complete
KK Check Az/El trim values, correct as needed to get
longitude search close *
Complete – Values reset – see
attached
KK Take photo of rack gear rear Complete
KK Inspect cabling and connectors behind and around rack
gear, repair as needed
Complete
KK Locate spares kit. Verify completeness of the kit, note
missing parts. *
Complete – No spares
KK Upgrade SeaTel/controller firmware with maintenance
releases as necessary
Complete – None required
KK Upgrade old ships with Conscan to Dishscan as needed
(Revelle, Melville, and Thompson)
N/A
Codan RF Equipment Initials Action Notes/Discussion
KK Take photo of converter panel N/A – BUC system does not require
Transceiver
KK Verify converter is not in an undue alarm state N/A – no Transceiver
KK Verify power levels at power supply (48 VDC, and 110
VAC). Record VDC and VAC
N/A – 48VDC to the BUC by the
Comtech modem was measured to be
47 VDC
VAC to antenna motors was measured
to be 116 VAC
KK Inspect RF coax cables and connectors, repair as needed Complete
KK Verify amplifier cooling fan functions Complete – BUC fan is operational
KK Verify amplifier is not being overdriven, correct as
needed
Complete
KK Locate and test RS-422/RS-232 adapter used with
converter, modify pinouts so it is not needed, or verify
that it is not needed as is. Note status.
Complete – No adaptor required
KK Locate and test DB-9/MIL serial cable that talks directly
to converter
Complete – cable is used to
communicate directly with the BUC
KK Locate spare LNB Complete – No spare available
KK Record settings (include serial number and wattage for
BUC)
Complete – see attached
s/n 6C40132F0081
Comtech Modem Equipment Initials Action Notes/Discussion
KK Verify settings are accessible, correct, and saved Complete
KK Verify modem locks on the correct signal, adjust as
needed
Complete
KK Visually inspect transmit signal directly for clean signal Complete
KK Verify expected Eb/No values for given location Complete
KK Record settings Complete – see attached
Page 4
Completed by (Name/Signature): ____________________________________ Date: _________
Initials Action Notes/Discussion
KK Upgrade firmware as necessary (at least Rev 1.30) Complete
KK Replace 5V PSU power cable if needed N/A
Cisco Router Equipment Initials Action Notes/Discussion
KK Verify cables and connectors are snug and screwed in,
repair as needed
Complete
KK Verify serial cable is a CAB-530MT with Comtech
Cisco adapter and modem is in RS-422 mode
Complete
KK Verify that green connect light on serial card is lit when
modem is locked up
Complete
KK Verify router survives a power cycle and can route
traffic within 15 minutes of turning on while connected.
Notify techs that they may want to save router settings!!
Not Tested
Rack Equipment
Initials Action Notes/Discussion
KK Inspect rack conditions for proper rack gear cooling,
lighting, wiring, etc. (Earth station: Verify lights and
A/C work)
Complete
KK Check and record rack air conditioner set point Complete – room is cool – no
thermostat set point available
Overall
Initials Action Notes/Discussion
KK Take photos of ship/dome placement Complete
KK Check with ship techs/crew for overall impression of
equipment performance and possible problem areas
Complete
KK Locate spares kit (with help from techs) and verify all
SeaTel spares and one LNA exist. Note discrepancies.
Complete – No spares kit purchased –
no spares available
KK Verify spectrum analyzer shows proper picture of Tx
and Rx carriers
Complete
KK Comment on or correct previous maintenance report
issues that were pointed out
Complete – no open issues from
previous operational report
Page 5
Completed by (Name/Signature): ____________________________________ Date: _________
Checklist Footnotes
Discussion
General Points
1. The antenna is one of the first 6006 models delivered to customers. The DAC is model # 2200 which uses
an L-Band interface instead of the 70 MHz interface found on the C-Band systems (model # 9797).
2. The bolts that attach the pedestal base plate to the radome base plate were loose, and the isolation springs
were not under any tension. This allowed the antenna to “rock” back and forth excessively, even in calm
weather, so the antenna was having unexpected difficulty tracking.
These bolts were tightened and Seatel was advised of the situation. The bolts will need to be checked at
every maintenance interval as part of the maintenance visit.
3. The antenna was mounted with the hatch oriented 90 degrees off from the usual “aft” position. This
orientation required a Home Flag Offset of 0191 to compensate.
4. The antenna was purchased without any spare components. They did purchase second LNB, which has a
different RX frequency range, which they can use when operating outside of the HiSeasNet network.
Page 6
Completed by (Name/Signature): ____________________________________ Date: _________
Photos
R/V Oceanus
15-18 Sept ‘07
Radome Placement - #1
Page 7
Completed by (Name/Signature): ____________________________________ Date: _________
R/V Oceanus
15-18 September ‘07
Radome Placement - #2
Page 8
Completed by (Name/Signature): ____________________________________ Date: _________
R/V Oceanus
15-18 September ‘07
Radome Exterior-#1
Page 9
Completed by (Name/Signature): ____________________________________ Date: _________
R/V Oceanus
15-18 September ‘07
Radome Exterior -#2
Page 10
Completed by (Name/Signature): ____________________________________ Date: _________
R/V Oceanus
15-18 September ‘07
Radome Mounting Plate
Page 11
Completed by (Name/Signature): ____________________________________ Date: _________
R/V Oceanus
15-18 September ‘07
Radome Interior
Page 12
Completed by (Name/Signature): ____________________________________ Date: _________
R/V Oceanus
15-18 September ‘07
Radome Interior
Base Plate Bolts Tightened
Page 13
Completed by (Name/Signature): ____________________________________ Date: _________
R/V Oceanus
15-18 September ‘07
Equipment Rack Front View
Page 14
Completed by (Name/Signature): ____________________________________ Date: _________
R/V Oceanus
15-18 September ‘07
Equipment Rack Side View
Page 15
Completed by (Name/Signature): ____________________________________ Date: _________
Final Equipment Configuration/Settings
HiSeasNet Satellite
Equipment
Configuration
Ship: R/V Oceanus
Date: 15 – 18 Sept ‘07 Location: Woods Hole, MA
Satellite: Satmex 5
Unit
Setting Description Setting Display
Setting Value Notes
SeaTel Digital Antenna
Controller (DAC)
Model DAC 2200 Antenna system is a model
4006-23 (8 Watt Ku-Band amplifier)
Serial Number 9606 Firmware Version 5.20 PCU Version 2.44a
AGC (Normal, On signal) 1943 Value when antenna is peaked up on signal
AGC (Normal, Off Signal) 1652 Value of noise when antenna is not on satellite
Latitude LAT 41 N Woods Hole, MA Longitude LON 70 W Woods Hole, MA
Heading HDG 63.6 Woods Hole, MA Satellite SAT 116.8 Satmex 5 satellite
Threshold THRS 1731 Antenna Controller locked to hub carrier
Intermediate Frequency L-Band Frequency
1250 MHz Shore-to-ship signal frequency to track
Baud Rate 30000 Tone OFF
Volt HORIZ FEC AUTO
NID 0000 Azimuth AZ 237.9 Woods Hole, MA
Elevation EL 23.1 Woods Hole, MA Relative Azimuth REL 174 Relative to bow of the ship
Elevation Trim EL TRIM -0006 In 1/10 of a degree
Page 16
Completed by (Name/Signature): ____________________________________ Date: _________
Azimuth Trim AZ TRIM +0006 In 1/10 of a degree Auto Threshold AUTO
THRESH
0060 In counts
Elevation Step Size EL STEP
SIZE
0000
Azimuth Step Size AZ STEP
SIZE
0000
Step Integral STEP
INTEGRAL
0000
Search Increment SEARCH INC 0010
Search Limit SEARCH LIMIT
0100
Search Delay SEARCH DELAY
0030
Step Delay STEP DELAY N/A System Type SYSTEM
TYPE
0069 Controller set for auto search
upon power failure or system reset
Gyro Type GYRO TYPE 0002 Set for NMEA information string from ship's
gyrocompass Polarization Angle Type POLANG
TYPE
0072 Set for Automatic - used with
Linear Polarized feeds Polarization Offset POL OFFSET 0040 Adjusted with Loral for best
cross-pol performance Polarization Scale POL SCALE 0090 N/A - not used on circular
polarized antennas Azimuth Blackout Limit 1 AZ LIMIT 1 0000 Does not transmit or try to
search in the blackout zone Azimuth Blackout Limit 2 AZ LIMIT 2 0000 Does not transmit or try to
search in the blackout zone Azimuth Blackout Limit 3 AZ LIMIT 3 0000 Does not transmit or try to
search in the blackout zone Azimuth Blackout Limit 4 AZ LIMIT 4 0000 Does not transmit or try to
search in the blackout zone Azimuth Blackout Limit 5 AZ LIMIT 5 0000 Does not transmit or try to
search in the blackout zone Azimuth Blackout Limit 6 AZ LIMIT 6 0000 Does not transmit or try to
search in the blackout zone Transmit Polarity TX
POLARITY
0004
Home Flag Offset HFO 0191
Page 17
Completed by (Name/Signature): ____________________________________ Date: _________
Codan Power Amplifier (PA) BUC
BUC Serial Number 6C40132F0081 BUC Serial number Converter Serial Number N/A No converter required
Transmit Frequency Tx Freq 14436.2750 Converted transmit center frequency
Receive Frequency Rx Freq 12136.0650 Converted receive center frequency
Transmit Output Level Attenuation
Tx Atten N/A TX output controlled by Comtech modem
Receive Attenuation Rx Atten N/A LNB Fault Control Faults: LNB N/A
SSPA Fault Control Faults: Fan N/A Fan Fault Control Faults: SSPA N/A
IF Impedence Impedence N/A PA State
TX On (RS232) TX On (RS232)
TX On (FSK) Transmit Default Last State
Compensation Frequency 14436 IF Comp Frequency 1014
LO Frequency 15450 MHz TX Alarm Threshold 0.0
Burst Power Threshold 0.0 Serial Interface 9600,8,N,1
Packet Protocol NDSATCOM Packet Address 1
Redundancy Mode NON Redundancy On/Off Line N/A
Comtech CDM-570L
Satellite Modem
(In CONFIG
menu)
Serial Number 072263306
Firmware 1.5.4 Modem Firmware Average Eb/No 7.0 dB Energy/Bit over noise (aka
Signal Quality) Framing Mode Unframed
Data Interface RS422 RTS/CTS Operation RTS/CTS Loop
TX FEC TPC
Page 18
Completed by (Name/Signature): ____________________________________ Date: _________
Transmit Modulation TX:MOD Rate ¾ QPSK
TX Code Rate 3/4
Transmit Data Rate TX:DATA 64.000 kbps TX Symbol Rate 42.667 Ksym
TX IF Frequency 1013.7250 MHz TX RF Frequency 14436.2750 MHz
TX Output State RX-TX Inhibit Transmit Power Level TX:PWR -24.0 dBm Comtech modem is used to
control BUC output power level
Transmit Scrambler TX:SCRAM ON Transmit Clock TX:CLK Internal Modem set to Internal clocking
Transmit Spectrum Inversion
TX:TSI Inverted
TX Data Sense Normal
Receive Forward Error Correction
RX:FEC TPC
Receive Modulation RX:MOD QPSK ¾ QPSK Receive Code rate RX:Rate 3/4
Receive Data Rate RX:DATA 256.00 kbps Receive Symbol Rate RX: Sym 0170.667 Ksym
RX IF Frequency RX: IF 1386.0650 MHz RX RF Frequency RX: RF 12136.0650 MHz
Receive Demod Acquisition Sweep Range
RX:ACQ +/- 30 KHz
Receive Descrambler RX:DESC ON Receive Buffer RX:BUF Disabled
Receive Spectrum Inversion
RX:RSI Normal
Receive Data Sense Normal Eb/No Alarm Point RX:EbNo 2.0 dB
Frequency Reference Internal 10 MHz
TX FIFO Alarm MASKED G.703 – BPV ALARM MASKED
TX AIS Alarm MASKED AGC Alarm ACTIVE
Eb/No Alarm MASKED RX AIS Alarm MASKED
Buffer Alarm MASKED Reference Alarm MASKED
BUC Alarm ACTIVE LNB Alarm ACTIVE
Page 19
Completed by (Name/Signature): ____________________________________ Date: _________
BUC M&C FSK Comms ON BUC RF Output ON
BUC FSK Address 01 BUC DC Power ON
BUC 10 MHz Reference ON BUC Current Alarm
Upper Limit 3500 mA Lower Limit 1000mA
BUC LO Frequency 15450 BUC Frequency Mix High Side
LNB DC Supply OFF LNB 10 MHz Reference OFF
LNB Current Alarm Upper limit 600mA
Lower Limit 010mA LNB LO Frequency 10750 MHz
LNB Frequency Mix Low Side Remote Control Local