a leading
telecommunications
Solutions Partner
May, 2008
IDRIDR--C with IDUC with IDU--LCLC
TrainingTraining
Course Introduction
§ IDR-C with IDU-LC Presentation
§ Typical Radio Link Configuration and Specifications
Product Demonstration
§ IDU-LC Indoor Equipment Description
§ IDU-LC Indoor Equipment Installation
§ IDR-C LCT Presentation & Operation
§ ODU Update
Agenda of 1st Day
IDR-C with IDU-LCPresentation
PointPoint--toto--point Microwave Radio Systempoint Microwave Radio System
7 GHz to 38 GHz7 GHz to 38 GHz
INTRALINK IDR-C with IDU-LC
üNMS
• ODU Front End• Modem• Line Interface
Loopback Capability
üFECüATPC
1+0Topology
7 GHz to 38 GHzOperating FrequencyShort / Long HaulLink Haul
• QPSK• 16QAM
Modulation(user configurable through the LCT)
• Up to 16 E1• 1 x 10/100Base-TX Ethernet
Traffic Interfaces
Up to 34 Mbit/sTotal Throughput Capacity(user configurable through the LCT)
Key Features
IDU-LC: the Indoor UnitODU-CHP: the Outdoor UnitIDU-LC: the Indoor Unit
ODU-CHP: the Outdoor Unit
Configuration of a Site
ODU-CHPODU-CHP
IDU-LCIDU-LC
16 x E1 & Fast Ethernet16 x E1 & Fast Ethernet
IDU-LC Models
4 x E14 x E1
37,0 to 39,5IDR-38CHP
21,2 to 23,6IDR-23CHP
17,7 to 19,7IDR-18CHP
14,5 to 15,35IDR-15CHP
12,75 to 13,25IDR-13CHP
7,7 to 8,5IDR-81CHP
7,1 to 7,9IDR-71CHP
Frequency Band (GHz)ODU-CHP Model
Frequency Bands and ODU-CHP Models
Typical Radio LinkConfiguration
Outdoor Unit (ODU-CHP)2
Indoor Unit (IDU-LC)1
1+0 Configuration with Integrated Antenna
2
1
When the antenna diameter isWhen the antenna diameter is 1 ft (0,3 m), 2 ft (0,6 m), 4 ft (1,2 m) or1 ft (0,3 m), 2 ft (0,6 m), 4 ft (1,2 m) or6 ft (1,8 m)6 ft (1,8 m), you can attach the ODU onto the antenna directly, thus, you can attach the ODU onto the antenna directly, thusavoiding theavoiding the waveguidewaveguide expense.expense.
Integrated Antenna
ODU Specifications
ODU Specifications (7 GHz, 8 GHz)
* guaranteed values are 2 dB higher* guaranteed values are 2 dB higher
-92,5
-89,5
-86,5
27
QPSK
-76,0-76,064QAM, 48x2, Channel 28 MHz
-73,0-73,0128QAM, 63x2, Channel 28 MHz
-92,5
-89,5
-86,5
28
QPSK
-88,5
-85,5
-82,5
25
16QAM
-82,0-82,032QAM, 20x2, Channel 14 MHz
-79,0-79,032QAM, 42x2, Channel 28 MHz
-77,0-77,032QAM, 48x2, Channel 28 MHz
-88,5
-85,5
-82,5
26
16QAM
-71,0
23
IDR-71CHP
128QAM
7,1 to 7,9
Value
24
64QAM
25
32QAM
QPSK, 4x2, Channel 7 MHz
QPSK, 8x2, Channel 14 MHz
QPSK, 16x2, Channel 28 MHz
16QAM, 4x2, Channel 3,5 MHz
16QAM, 8x2, Channel 7 MHz
16QAM, 16x2, Channel 14 MHz
-71,0128QAM, STM-1, Channel 28 MHz
dBm,typ.Rx Sensitivity at BER 10-6 *
242322dBmTx Output Power upper
IDR-81CHPODU CHP Model
32QAM
64QAM
128QAMModulation
7,7 to 8,5GHzFrequency of Operation
ValueUnitSpecification
-92,5
-89,5
-86,5
25
QPSK
-76,0-76,064QAM, 48x2, Channel 28 MHz
-73,0-73,0128QAM, 63x2, Channel 28 MHz
-92,5
-89,5
-86,5
25
QPSK
-88,5
-85,5
-82,5
22
16QAM
-88,5
-85,5
-82,5
22
16QAM
-82,0-82,032QAM, 20x2, Channel 14 MHz
-79,0-79,032QAM, 42x2, Channel 28 MHz
-77,0-77,032QAM, 48x2, Channel 28 MHz
20
32QAM
19
64QAM
-71,0
18
IDR-15CHP
128QAM
14,5 to 15,35
Value
-71,0
18
IDR-13CHP
128QAM
12,75 to 13,25
Value
19
64QAM
20
32QAM
QPSK, 4x2, Channel 7 MHz
QPSK, 8x2, Channel 14 MHz
QPSK, 16x2, Channel 28 MHz
16QAM, 4x2, Channel 3,5 MHz
16QAM, 8x2, Channel 7 MHz
16QAM, 16x2, Channel 14 MHz
128QAM, STM-1, Channel 28 MHz
dBm,typ.Rx Sensitivity at BER 10-6 *
dBmTx Output Power upper
ODU CHP Model
Modulation
GHzFrequency of Operation
UnitSpecification
ODU Specifications (13 GHz, 15 GHz)
* guaranteed values are 2 dB higher* guaranteed values are 2 dB higher
ODU Specifications (18 GHz, 23 GHz)
-91,5
-88,5
-85,5
23
QPSK
-75,0-75,564QAM, 48x2, Channel 28 MHz
-72,0-72,5128QAM, 63x2, Channel 28 MHz
-92,0
-89,0
-86,0
24
QPSK
-87,5
-84,5
-81,5
21
16QAM
-88,0
-85,0
-82,0
22
16QAM
-70,0
17
IDR-23CHP
128QAM
21,2 to 23,6
Value
18
64QAM
-81,0
-78,0
-76,0
19
32QAM
-81,532QAM, 20x2, Channel 14 MHz
-78,532QAM, 42x2, Channel 28 MHz
-76,532QAM, 48x2, Channel 28 MHz
-70,5
18
IDR-18CHP
128QAM
17,7 to 19,7
Value
19
64QAM
20
32QAM
QPSK, 4x2, Channel 7 MHz
QPSK, 8x2, Channel 14 MHz
QPSK, 16x2, Channel 28 MHz
16QAM, 4x2, Channel 3,5 MHz
16QAM, 8x2, Channel 7 MHz
16QAM, 16x2, Channel 14 MHz
128QAM, STM-1, Channel 28 MHz
dBm,typ.Rx Sensitivity at BER 10-6 *
dBmTx Output Power upper
ODU CHP Model
Modulation
GHzFrequency of Operation
UnitSpecification
* guaranteed values are 2 dB higher* guaranteed values are 2 dB higher
ODU Specifications (38 GHz)
-73,064QAM, 48x2, Channel 28 MHz
-70,0128QAM, 63x2, Channel 28 MHz
-90,5
-87,5
-84,5
22
QPSK
QPSK, 4x2, Channel 7 MHz
QPSK, 8x2, Channel 14 MHz
QPSK, 16x2, Channel 28 MHz
-86,516QAM, 4x2, Channel 3,5 MHz
-83,516QAM, 8x2, Channel 7 MHz
-80,516QAM, 16x2, Channel 14 MHz
-79,032QAM, 20x2, Channel 14 MHz
-76,032QAM, 42x2, Channel 28 MHz
-74,032QAM, 48x2, Channel 28 MHz
-68,0128QAM, STM-1, Channel 28 MHz
dBm, typ.
Rx Sensitivity at BER 10-6 *
18171615dBmTx Output Power upper
IDR-38CHPODU CHP Model
16QAM
32QAM
64QAM
128QAM
Modulation
37,0 to 39,5GHzFrequency of Operation
ValueUnitSpecification
* guaranteed values are 2 dB higher* guaranteed values are 2 dB higher
IDU-LCIndoor Equipment
Description
IDU-LC Block Diagram
Ethernet Switch
NMS1
NMS2
ETH1(disabled in current vers.)
ETH2
Ethernet to PDHMapper
Main Processor
LineInterface
Unit 1
LineInterface
Unit 2
LineInterface
Unit 3
LineInterface
Unit 4
MUX
E1
1
... E1
4
E1
5
... E1
8
E1
9
... E1
12
E1
13
... E1
16
FPGAI/O
Alarms
2 x RS-232Channels
Handset EOWglueLogic
Framer/ModemDigitalPart
ServiceChannelInterfaceSubunit
CableInterface
Unit
350 MHz Tx IF
ODU
Power SupplyUnit
±6 V dc
+3,3 V dc
+1,8 V dc
+1,2 V dc
-40 V dc to -60 V dc
CONSOLEConnector
DAC Filters ModulatorQuadrature
ADC140 MHz
SAWFilter
De-ModulatorQuadrature
140 MHz Rx IF
Modem Analog Part
CoaxialCable
FLASH RAM RTC
IDU-LC Functional Description
Ethernet to PDHEthernet to PDH MapperMapper: divides the available bandwidth between a: divides the available bandwidth between a10/100Base10/100Base--TX port and 0 to 16 E1 ports.TX port and 0 to 16 E1 ports.
FPGAAt the transmit path, the MUX sub-unit accepts 16 E1s (G.703) tributaries.Data and clock are recovered and converted in NRZ format. Then, the 16tributaries are multiplexed in a single stream together with synchronizationinformation. The rate of the stream is 34368 kbit/s. This stream is thenforwarded to the Framer / Modem / Cable Interface Unit.
At the receive path, the single stream with the above rate, coming from theFramer / Modem / Cable Interface Unit is demultiplexed in the originaltributaries and encoded in G.703 format.
75 ohm unbalanced or 120 ohm (factory default) balanced line impedance isselectable via straps on the board. 120 ohm to 75 ohm conversion panel isprovided on customer’s request.
The capacity can be configured via the LCT from 4 x E1 to 16 x E1 dependingon the customer’s request.
Service Channel Interface SubunitService Channel Interface Subunit: serves the connection of two RS: serves the connection of two RS--232232Service Channels, two 4W telephone lines (EOW addService Channels, two 4W telephone lines (EOW add--onon subcardsubcard required) and arequired) and ahandset for communication with the remote station. Furthermore,handset for communication with the remote station. Furthermore, the Servicethe ServiceChannel Interface subunit provides four user alarms inputs (eithChannel Interface subunit provides four user alarms inputs (either TTL or dryer TTL or drycontacts) and four user alarms relay outputs which can be progracontacts) and four user alarms relay outputs which can be programmed throughmmed throughthe LCT according to the customerthe LCT according to the customer’’s conveniences convenience
TheThe Framer provides:provides:•• Multiplexing of the Service Channels with the data streamMultiplexing of the Service Channels with the data stream•• Error correction and framing overhead addition to the stream (FError correction and framing overhead addition to the stream (Forward Errororward ErrorCorrection code used is ReedCorrection code used is Reed--Solomon)Solomon)
TheThe Modem provides encoding (modulation) of digital information on theprovides encoding (modulation) of digital information on theanalogue carrier at the transmit path and decoding (demodulationanalogue carrier at the transmit path and decoding (demodulation) of digital) of digitalinformation from the received signal at the receive path.information from the received signal at the receive path.
IDU-LC Functional Description, Continued
TheThe Cable Interface Subunit provides multiplexing of the two IF signals,provides multiplexing of the two IF signals, TxTxand Rx in a single coaxial cable via a twoand Rx in a single coaxial cable via a two--way combiner. This cable connectsway combiner. This cable connectsthe modem to the Outdoor Unit (ODU).the modem to the Outdoor Unit (ODU).
IDU-LC Installation & Cabling
15 W typ.
Consumption
3,5 kg483 mm (19”) x 245 mm x 43,6 mm (1U)IDU-LC
Weight (max)Dimensions (W x D x H)Unit
IDU-LC Dimensions and Weight
IDU-LC – Front Panel
Resetbutton
ALMCPULeds:
RJ-11 Handset Receptaclefor Communication
with the Remote Station
AUX 1 Connector (D-Sub 25 Male)for connection of:- Two 4W Telephone Lines- Internal & External Alarms
AUX 2 Connector(D-Sub 25 Female)
for connection of twoRS-232 Service Channels
IDC 68 pin Female Connectorfor Connection of 4 x E1
or 16 x E1 (mixed Ethernet Model)Tributaries
For test purposes only NMS1, NMS2: 10/100 Base-TX Connectorsfor connection of NMS / LCT
and for interconnection with another IDU-LC(daisy chain)
Disabledin currentversion
10/100 Base-TX Connectorfor Ethernet payload traffic
(mixed Ethernet Model)
LFA, BER3, -48VSYNC, BER6, PS
: leds
N-type Female Connectorfor ODU Connection
ON / OFFSwitch
Two pole MalePower
Connectorfor connection
of–48 V dc
power supply
ALM
CPU
On: System general alarm
Blinking: Proper operation of CPU
LFAOn :
One or more of thefollowing occurs:
• The modem isunlocked.
• The transmission or thereception PLL is
unlocked.• Loss of frame
alignment.• The station has locked
into a different linkidentification number to
the one you haveselected through the LCT
Off :The reception pathoperates correctly.
On: The stationpower supply voltagehas been cabled tothe IDU-LC.
BER3 -48V
SYNC BER6 PS
On : The framer and thusthe modem are locked.
On: BER ≥ 10-6
OFF: BER < 10-6
On: The IDU-LC isproperly powersupplied.
NOTEThe -48 V dc led is ONeven if the ON-OFFswitch is in the OFFposition.
On or Off: CPU problem
IDU-LC – Front Panel Leds
IDU-LC – Front Panel Leds Detail
Green led, if ON, the Ethernet electricallink is up. If blinking, there is data traffic inthe Ethernet electrical link.
Not used
IDU-LC – Front Panel Leds at Unit Start-up
During unit start-up (after installation), the following occur:
1. The Ethernet leds start to blink in a circular mode.
2. The CPU led blinks slowly for ~ 2 s, fast for ~ 10 s during FPGAcode download and finally ends to constant slow blinking.
3. The LFA, SYNC, BER3 and BER6 leds remain OFF until thecompletion of the FPGA bin file download. Then, the state (ON orOFF) of the leds depends on the Modem state.
IDU-LC Installation
1
2
331 2
IDU-LC Grounding
M5 x 10 screw(provided, screwed
on the right sidepanel of the unit)
Grounding Cable, 6 mm2, stranded,PVC, green / yellow, 450 V,
provided at the requested length
E1 Tributaries Cables (120 Ω)
Cable for connection of 120 Ω Ε1Tributaries, IDC 68 pin maleconnector, open end (32 pairs xAWG26)
E1 Tributaries Cables (75 Ω)
IDC (120 Ω) to BNC (75 Ω) Conversion Panel
InterconnectionInterconnectionCableCable
IDU-LC
Available lengths:• 0,5 m• 3 m
Power Supply Cable
•• The IDUThe IDU--LC operates only onLC operates only onnegative power supply,negative power supply,fromfrom ––40 V dc to40 V dc to ––60 V dc60 V dc..
•• The positive pole of the powerThe positive pole of the powersupply source at the IDUsupply source at the IDU--LCLCstation should be grounded.station should be grounded.
•• The recommended value forThe recommended value forthe fuse of the power supplythe fuse of the power supplysource at the IDUsource at the IDU--LC station isLC station is10 A.10 A.
Do notDo not connect the powerconnect the powersupply to the IDUsupply to the IDU--LC beforeLC beforeyou make sure that theyou make sure that thepositive pole of the powerpositive pole of the powersupply source at the IDUsupply source at the IDU--LC station is grounded.LC station is grounded.
(+Vin/GND)
(-Vin)
12
BLUE
BROWN
21
6 mm
10 mm
Heat-shrinkableTube
Make sure thescrews on theconnector top arevisible.
Do notDo not applyapplyforce whenforce whenplugging theplugging thecable. The cablecable. The cablecan be insertedcan be insertedonly in oneonly in onedirection.direction.
-48 V +48 V (GND)
RG-142 Tail Cable
NN--type female fortype female forconnection toconnection tothe IF cablethe IF cablecoming from thecoming from theODUODU
NN--type, male,type, male,R/A forR/A forconnectionconnectionto the IDUto the IDU--LCLC
IDR-C LCT Presentation &Operation
System tab
Informationfor ODU A(HomeConfig,RemoteConfig)
Your PCClock
IDR-CClock
Set andenable the
ATPC
SystemGeneral
Information(Home
Config,RemoteConfig)
Opticalindications of
user alarmsI/O
RF linkperformance
RemoteStation
IP Address
LocalStation
IP Address
Click to getconnected
IP address of the station
Tabs
Menu Bar
IDR View tab
MUX
OutdoorUnits
Tabs
Framer/Modem/CableInterfaceUnit
UserInputs/Outputs
RemoteStation
ODU
ODULoopback
HomeStation
ODU
Mute ODU
DigitalLoopback
ODUReception
level
PowerSupply
Unit
Ethernet toPDH Mapperand PDHMultiplexer
Mixed Ethernet tab – Ethernet Data tab
EthernetData tab
Select themode and rate
ofcommunication
between theIDR-C and the
Ethernet Switch/ Router
Apply thesetting
Option buttons to select the number ofE1 tributaries to be allocated in theMux frame. The remaining timeslots ofthe frame will be allocated to supportthe Ethernet traffic.
Led ONwhen
Ethernetlink withEthernetSwitch /
Router up
EthernetData ofLocalandRemoteStation
Mixed Ethernet tab – MUX Data tab
MUXAlarms
Enables the AIS transmissionat the tributaries outputs
MUXs of Local andRemote Station
Mixed Ethernet tab – Tributaries Data tab
TributariesAlarms
DeactivatesLOS alarm forunconnected
tributaries
RadioLoopback Line
Loopback
Power Supply tab
Power Supply Alarms
Local and RemoteStation PSUs
Modem tab
Set the LinkIdentification
Number
Digital Loopback
Impose SinCos Modulation(for test purposes only)
Framer/Modem/Cable Interface Unit Alarms
Local and Remote StationModems
ODU tab
Radio MeasurementsMute ODU
ODU Loopback
Select the RSSIAlarm
ThresholdSelect the ODU Temperature Alarm Threshold
Clickto modify
Click to apply
Selectthe
transmittedpower
Selectthe RF
channelnumber
Reset ODU
ODUAlarms
ODUinformation
Local and RemoteStation ODUs
Alarm Log tab
Alarm CountNumber
Time and daythe alarm was
generated(according to
the IDR-Cclock) ON: alarm enabled
OFF: alarm disabled
Alarm severity
Alarm polarity
Alarm input/outputat the AUX connector
Alarm name
Versions tab
ODUfirmwareversion
System.ini file
Version of theCMS bin file
The system files are stored in the main memory of the IDU-LC.
System Files
NOTE You are recommended to treat the system files with extreme care and onlywhen required!
Example: lc010014.bin
lcxxx.bin : Microprocessor bin fileContains the IDR-C firmware
version number
NOTE If you delete the file from the memory, the microprocessor will run in bootmode using the default boot code bin file.
Print-out example of the file:
lcboot.sys: Text file, informs the microprocessor:-which lcxxx.bin file version to use-which xxx.bin (FPGA bin file) to download to FPGA-which xxx.ini file (initialization file) to download to FPGA
NOTEAt the power up of the IDU-LC, the microprocessor boots with the defaultbin file, then reads the lcboot.sys file and starts working with the lcxxx.binfile referred in the lcboot.sys file.
System Files, Continued
xxx.ini:Text file, initializes avariety of FPGAfunctionsparameters
The ini files:
qam16_16x2v17.iniqpsk_16x2v01.iniqam16_8x2v01.iniqpsk_8x2v01.iniqam16_4x2v01.iniqpsk_4x2v02.ini
NOTE The filename denotes the modulation, capacity and file version.
qam16_4x2v01.ini
Modulation
Capacity
System Files, Continued
Fileversion
vxx.bin FPGA bin file: FPGA programmingfile
The bin files:
qam16_16x2vxx.binqpsk_ 16x2vxx.binqam16_8x2vxx.binqpsk_ 8x2vxx.binqam16_4x2vxx.binqpsk_ 4x2vxx.bin
NOTEThe filename contains information concerning the modulation and capacity.
qam16_4x2vxx.bin
ModulationCapacity
version number
System Files, Continued
Print-out example of the file:
lcconfig.sys: Text file, informs the microprocessor of the desiredsystem configuration (equipment IP address and SubnetMask, xxx.bin file, xxx.ini file and other importantinformation)
NOTEIf an error occurs during a new system file download, the IDU-LC enters in bootmode with IP address the one stated in the lcconfig.sys file or IP address192.168.50.1 in case the lcconfig.sys file does not exist.
System Files, Continued
System Files, Continued
alrm.nme &alrm.attr:
Two files informing the microprocessor of the alarmsattributes (name, severity, polarity etc.)
idr_cvx.x.mib: MIB file (Management Information Base) for the systemSNMP management
Getting Started – Step 1
Step 1: Install the management application (IDR-C MASTER) in the LCTfrom the IDR-C Operation CD-ROM.
Click here
Getting Started – Step 2
Step 2: Connect the LCT to the IDU-LC.
Connect the LCT to NMS1 or NMS2.
Getting Started – Step 3
Step 3: Assign an IP address to the LCT.
Why assign an IPaddress to the
LCT?
You must assign an IP address to the LCTto enable the communication between theLCT and the home or remote station.
Getting Started – Step 3, Continued
1. For Windows 2000, select Start > Settings > Network and Dial-up Connections > Local AreaConnection. For Windows XP, select Start > Connect to > Show all connections.
2. For Windows 2000, in the window that appears, click Properties.For Windows XP, right-click the Local Area Connection and select Properties.
Getting Started – Step 3, Continued
3. Verify that the Internet Protocol (TCP/IP) check box is selected and click Properties.
Getting Started – Step 3, Continued
4. Click the Use the following IP address optionbutton. In the Default gateway box, type the IPaddress of the IDU-LC. In the IP address box,type the IP address of the IDU-LC increased byone. In the Subnet mask box, type255.255.255.xxx where xxx depends on thenetwork topology (in the example screenshot thexxx value is 252).
The option button Use the following DSN serveraddresses is automatically selected. Leave thesetext boxes empty.
NOTE The manufacturer provides the IDU-LC units of a link with 192.168.59.45 and192.168.59.49 as the default IP addresses.
5. Click OK to close and save the settings.6. Reboot the LCT to activate the settings.7. To confirm that the LCT is communicating withthe IDU-LC, in the Command Prompt window, typeping 192.168.59.45
Getting Started – Step 4
Step 4: Launch the MBR software tool.
Why use the MBRtool?
Use the MBR software tool for:
• Station firmware upgrade
• Station IP address modification
• Station capacity and modulationmodification
Prerequisite: The IDR_LC_REL_xx_xx_xx_Conf.zip file is required.
xx_xx_xx is the file version
Conf can be one of the following dependingon the IDU-LC model:
- MIXED for the 16 x 2 mixed Ethernet model- 4x2 for the 4 x 2 model- E3 for the E3 model- Ethernet for the Ethernet model
The file exists in the IDR-C OperationCD-ROM. In case you do not have theCD-ROM, request the file from themanufacturer.
Conf field appears for xx_xx_xxversion 1_0_18 and then.
Getting Started – Step 4, Continued
1. Extract in the PC hard drive all the files compressed in the IDR_LC_REL_xx_xx_xx_Conf.zipfile for xx_xx_xx version 1_0_18 and then (or IDR_LC_REL_xx_xx_xx.zip file for previousversions) making sure you have selected the Use folder names check box to preserve thefolders structure after the zip extraction.
2. Launch the MBR Tool (MBR.exe file in the lct folder).
Getting Started – Step 5
Step 5: Upgrade the IDR-C firmware.
1. Launch the MBR Tool.
2. Right-click in the Management Treewindow and select Add New System.
3. Right-click on 000.000.000.000 andselect Rename System.
Getting Started – Step 5, Continued
4. Type the IP address of the station whose firmware you want to upgrade.
5. In the FTP Authentication group-box, type nick and nman in the User ID andPassword boxes for both Local and Remote Station and click Connect.
Getting Started – Step 5, Continued
6. In the Management Tree window, right-click on the node whose firmware youwant to upgrade and select Upgrade.
7. In the Wizard window that appears, click Next.
8. Click Browse to find the version_control_file.txt. The file is found in the folderyou have extracted the most recent IDR_LC_REL_xx_xx_xx_Conf.zip file.
Getting Started – Step 5, Continued
9. Open the version_control_file.txt file. In the window that appears, click Next.
Getting Started – Step 5, Continued
10. In the window that appears, select theDelete previous bin, mib, ini files of theremote system and click Next.
The application automaticallyselects the check boxes of thefiles that need upgrading.
NOTE
11. When the upgrading is completed, clickFinish. Repeat steps 6 to 10 to upgradethe remote station firmware.
Do not forget to reset bothlocal and remote stations!
NOTE
Getting Started – Step 6
Step 6: Change the IP Address and Capacity / Modulation of your Station
1. Launch the MBR Tool.
2. Click Find.
3. Enter the user id and password (nick,nman).
4. Expand the node of the station whoseIP address and capacity / modulation youwant to change and then expand theBaseband node.
Getting Started – Step 6, Continued
5. In the Baseband window, click Update to refresh the contents of the window, changethe IP address, the capacity and modulation and then click Apply.
Type thenew IPaddressof thestation.
Select thecapacityandmodulationyou wish.
6. Repeat for the Remote Station.
Do not forget to reset both local and remote stations as well as the ODUs!NOTE
Getting Started – Step 7
Step 7: Launch the IDR-C MASTER.
To launch the IDR-C MASTER, double-click the icon:
The Main Window of the application appears:
LCT_IDR_Cxxx.exe
Getting Started – Step 8
Step 8: Get connected to the IDR-C you want to configure.
When you getconnected:
2. Select or type the IPaddress of IDR-C you wantto get connected.
3. Click Connect.
1. Open the System tabbed sheet.
Getting Started – Step 9
Step 9: On the System menu, select Sys Restart, Remote to reset the remote station andthen Sys Restart, Local to reset the local station. The reset of the stations is recommendedafter the firmware upgrade.
Getting Started – Step 10
Step 10: If you have changed the stations capacity / modulation, you must reset theODUs. Open the ODU tabbed sheet, then open the Remote ODU A tabbed sheet and clickReset ODU. Then open the Local ODU A tabbed sheet and click Reset ODU.
Getting Started – Step 11
Step 11: Set the IDR-C clock.
In the status bar, the System Time becomes equal to the PC Time.=
Click Set Time
IP & Mask Calculation Methodfor INTRALINK Networks
IP & Mask Calculation Method for INTRALINK Networks
The IDR-C IP addressing is in compliance with RIPv2.
N = 256 / nFormula
n : the maximum number of Hosts that can belong to the same Sub-network
n = INTRALINK Systems + 2
n can take one of the values: 4, 8, 16, 32, 64, 128
N: the maximum number of Sub-networks that can be created for the specific number ofHosts
NOTE
IP Address Calculation Method
256255.255.255.0/241
128255.255.255.128/252
64255.255.255.192/264
32255.255.255.224/278
16255.255.255.240/2816
8255.255.255.248/2932
4255.255.255.252/3064
nSubnet MaskN
See nextpage
example
IP Address Calculation Method, Continued
Example
n = 64INTRALINK Systems = 62
N = 256 / 64 = 4
192.168.66.255192.168.66.254192.168.66.193192.168.66.192
192.168.66.191192.168.66.190192.168.66.129192.168.66.128
192.168.66.127192.168.66.126192.168.66.65192.168.66.64
192.168.66.63192.168.66.62192.168.66.1192.168.66.0
tofrom
BroadcastAddress
INTRALINK SYSTEMSAddressesSub-network
Address
N = 4
n = 64
The valuesin thesethree fieldsarehypothetical
Subnet Mask = 255.255.255.192
IP Address Calculation Method, Continued
192.168.66.1
192.168.66.65
IDR-C192.168.66.2
IDR-C
192.168.66.66
IDR-C
192.168.66.3IDR-C
192.168.66.80
IDR-C192.168.66.16
IDR-C
RouterRF Link
Ethernet Link
Sub-network 1IP Address = 192.168.66.0
Subnet Mask = 255.255.255.192
Sub-network 2IP Address = 192.168.66.64
Subnet Mask = 255.255.255.192
IP NetworkLocalCraft
Terminal
Finding outthe IP Address of a Station
Finding out the IP Address of a Station
To find the IP address of the station, reduce the IPaddress of your LCT by one. In the example, the IPaddress of the station is 192.168.59.37
4
In the Open box, type command (Windows 2000 or XP). Inthe DOS prompt, type ipconfig. You view the IP address ofyour LCT.
3
Select Start>Run.2
Double-click on the icon of the dial-up connection that youcreated for the communication of your LCT with the IDR-C.1
ActionStep
In case you do not know the IP address of the IDU-LC you want to get connected to, followthe procedure below or use one of the relevant free Internet utilities.
NOTE
Before proceeding to theprocedure, you should connectthe LCT to the CONSOLE PORT(RS-232 port) of the IDU-LC andcreate a dial-up connectionbetween your LCT and theIDR-C.
IDR-C CD-ROM: AutomaticInstallation through Wizard
ODU Update
Updating the ODU Version
11. Use the FTP Tool and download the oduvxxx_chk.bin file (provided by themanufacturer) to the IDU-LC.
FTP Tool of the ApplicationFTP Tool of the Application
1.1. On the SystemOn the Systemmenu, selectmenu, select FTP ToolFTP Tool..
2.2. Type the IP addressType the IP addressof the IDRof the IDR--C.C.
3.3. Click to getClick to getconnected.connected.
4.4. Select theSelect theoduvxxx_chk.binfile.
5.5. Click toClick todownload todownload toIDUIDU--LC.LC.
Updating the ODU Version, Continued
2.2. Select Start>Run and in the Open box, type telnet <ip address> where <ipaddress> is the ip address of the IDR-C station whose the ODU version you want toupdate (Login: nick, Password:(Login: nick, Password: nmannman).).
33. Type this commandand press ENTER.
The ODU update process lasts about 1 or 2 minutes. After the proThe ODU update process lasts about 1 or 2 minutes. After the process completion,cess completion,the following message appears:the following message appears:
Updating the ODU Version, Continued
Changing the ODU RF Channels
If you want an RF channel arrangement other than the one describIf you want an RF channel arrangement other than the one described in the ITUed in the ITU--RRRecommendation that corresponds to your operating frequency bandRecommendation that corresponds to your operating frequency band, you should, you shouldupdate theupdate the ODUODU xxxxxx..chschs file.file.
1. Use the FTP Tool and download the new xxx.chs provided by themanufacturer to the IDU-LC.
2. Select Start>Run and in the Open box, type telnet <ip address> where<ip address> is the ip address of the IDR-C station whose the ODUxxx.chs file you want to update (Login: nick, Password:(Login: nick, Password: nmannman))
3. Type ODUupdate xxx.chs and press ENTER. The ODU update processlasts a few seconds.
4. Open the ODU tabbed sheet and click Reset ODU to reset the ODU.
Configuring the IDR-C
Configuring the IDR-C – Step 1
Step 1: Set the transmission/reception channel.
Before setting the transmission/reception channel, open the System tabbed sheet,click Home Config and check if the Channel Step value is half the Channel Sizevalue.
If so, select the RF Channels Numbers as follows: 1, 3, 5, 7 etc. or 2, 4, 6, 8 etc.depending on the desired transmission frequency to avoid the existence ofcommon frequencies between two different RF Channels Numbers!
Configuring the IDR-C – Step 1, Continued
1. Select the ODU
2. Click EDIT3. Select the numberof the RFtransmission andreception channel.
Step 1: Set the transmission/reception channel.
4. Click COPY toapply the setting
Configuring the IDR-C – Step 2
Step 2: Set the transmitted power
1. Select the ODU
2. Click EDIT
3. Select thetransmitted power
4. Click COPY toapply the setting
Configuring the IDR-C – Step 3
Step 3: Set the link identification number
2. Select the link idyou want in therange 0 to 15.
The link identificationnumber is a number inthe range 0 to 15 theoperator selects throughthe LCT to identify in aunique way a linkbetween a local and aremote IDR-C. The linkidentification numberis extremely useful incases of multiple linksexisting between twostations as it preventsthe stations fromdemodulating databelonging to some otherlink if , by mistake, thestations lock into thefrequency of this link.
1. Click REMOTE A.
3. Click.
4. Click LOCAL A and repeat steps2 and 3 to set the same id.
5. Click Enable so that, in case the linkid of the remote IDR-C is other than thelink id of the local IDR-C, an AIS alarm isenabled at the tributaries outputs. Theled beside the Enable button becomesyellow.
Configuring the IDR-C – Step 4
Step 4: Save the configuration you made
Configuring the IDR-C – Step 5 & 6
Step 5: Repeat steps 1 to 4 for the remote station
Step 6: Align the antennas of the two stations
Configuring the IDR-C – Step 7
Step 7: After the establishment of the link between the two stations, proceed to theoptimization of the link to achieve max RSSI level
To achieve reliable transmission in a microwave link, the transmitted power plus thegain of the transmitter and receiver antennas should exceed the attenuation at thetransmission path and the sensitivity of the receiver. The attenuation at thetransmission path is given in the following formula:
A=92.4+20logD+20logF
A is the attenuation at the transmission path in dBD is the distance between the antennas in kmF is the frequency of the microwave signal in GHz
Configuring the IDR-C – Step 7, Continued
Check the receptionlevel in the Rx In
box.
To optimize the link, while performing minor horizontal and vertical movements of theantenna, open the ODU tabbed sheet and check the reception level in the Rx In box in theRadio Measurements group box.
Prerequisites: If you use the LCT to observe the reception level or the RSSI, you will needanother person to move the antenna.
Configuring the IDR-C – Step 7, Continued
1
Remove the cover from receptacle 1 shown in thefigure and connect a digital voltmeter using thespecial cable provided.
In case no second person is available to move the antenna, you can use the special cable tomeasure the RSSI level.
Configuring the IDR-C – Step 8
1. Select the ODU
2. Click EDIT
3. Select thethreshold 4. Click COPY to
apply the setting
Step 8: Set the RSSI Alarm Threshold (optional)
The led becomesred if the receptionlevel falls below thethreshold you set
Configuring the IDR-C – Step 9Step 9: Set the ODU Temperature Alarm Threshold (optional)
1. Select the ODU
2. Click EDIT
3. Select thethreshold
4. Click COPY toapply the setting
The led becomesred if the internaltemperature of ODUexceeds thethreshold you set
The internaltemperature of ODUis ~ 25 °C to +30 °Chigher than theenvironmentaltemperature. TheODU can workproperly at anenvironmentaltemperature range-45 °C to +90 °C.The applicationpermits you to setan uppertemperaturethreshold. If theinternal temperatureof the ODU exceedsthis threshold, analarm will begenerated.
Configuring the IDR-C – Step 10Step 10: Open the System tabbed sheet and confirm the linksettings for both the local and the remote station
Configuring the IDR-C – Step 11Step 11: Set the ATPC level and enable the ATPC feature (optional)
1. Click RemoteConfig.
When you enable the ATPC(Automatic TransmissionPower Control) feature,you make the transmitter atthe local station adjust itsoutput power so that thereceiver at the remotestation constantly receivesthe desired level you haveset.
2. Select the desiredreception level of theremote station.
3. Click EnableATPC to enable theATPC feature.Notice the led turnsON.
Configuring the IDR-C – Step 12Step 12: Allocate the E1 traffic and the Ethernet traffic in the Muxframe
1. Click Local.
2. Select the mode and rate of communicationbetween the IDR-C and the Ethernet Switch /Router. The settings of the Ethernet Switch /Router and the IDR-C must be the same.
5. Click the appropriate option buttonaccording to the desirable number of E1tributaries to be allocated in the Mux frame.The remaining timeslots of the frame will beallocated to support the Ethernet traffic.
NOTE You must make the setting whether you have mixed Ethernet traffic or not!
Open theMixed
Ethernettabbed
sheet andthen the
EthernetData
tabbedsheet.
3. Click to apply thesetting.
4. The led turns on when the Ethernet link with theEthernet Switch / Router is up.
6. Click to apply thesetting.
7. ClickRemoteand repeatsteps 2,3,4,5 and 6.
Configuring the IDR-C – Steps 13, 14,15
Step 13: Open the different tabbed sheets and check if there are any alarm signals.
Step 14: Save the modifications you made for both Home and Remote Stations.
Step 15: Close the application.
You have now completed the configuration of theIDR-C. The link is ready to operate.
IDR-C Radio LinkOperation and Maintenance
Open the System tabbed sheet and click Home Config or Remote Config.
Click Home Configor
Remote Config
Monitoring the IDR-C Configuration
UNPROTECTED:1+0 topology
Select the ATPCreception level ofremote station
The transmissionband (High orLow) of ODU
The frequency inwhich the ODU istransmitting atthis moment
The allowed rangeof ODU outputpower
The start frequencyof the ODUtransmission band
The RF channelbandwidth
How many kHz existbetween twosuccessive RFchannel numbers
Monitoring the IDR-C Configuration, Continued
Open the ODU tabbed sheet.Select the ODUyou want tomonitor
Monitoring the ODU
Radio Measurements
Tx IF signalpower
ODU receptionlevel
Transmissionpower
Temperatureinside ODU
Output voltagesof ODU internalpower supplyunits
Monitoring the ODU, Continued
ODU serial number
ODU identificationnumber
Central frequencyof duplexertransmission filterCentral frequency
of duplexerreception filter
Duplexerbandwidth
Duplexerbandwidth margin(the marginbetween duplexerbandwidth startfrequency andduplexer first fc
For manufactureruse only
Other ODU information
Monitoring the ODU, Continued
Open the Versions tabbed sheet.
LCTapplicationversion
ODUfirmwareversion
Not used
Version of theMicroprocessorbin file
Version of the FPGAbin file
Monitoring the IDR-C Version
Not used
Type of theIDU-LC unit
System.inifile
The code type of theFramer/Modem FPGA
Version of the IDU-LCunit
The Tx IF frequency
Open the IDR View tabbed sheet.
Monitoring the IDR-C Alarms
Not used
PSU
UserInputs/Outputs
Framer/Modem/CableInterface Unit
IDU of Remote Station
Red block indicates detection of alarm. Open the corresponding tabbed sheet toview the alarms detected.
Monitoring the IDR-C Alarms, Continued
Ethernet toPDH Mapperand PDHMultiplexer
ODU ofRemoteStation
IDU of Home Station
ODU ofHome
Station
NOTE The PS B block although red does not denote an alarm.
Monitoring the ODU Alarms
Open the ODU tabbed sheet.
General Alarms
No RF Signalat the outputof ODU
The reception level falls below athreshold the manufacturer hasset for a reliable RF linkperformance. This thresholddepends on the bit rate and themodulation type according to thetable.
-64STM1128QAM-7316 x 2/E3QPSK-7416 x 2/E316QAM-738 x 2QPSK-778 x 216QAM-764 x 2QPSK-804 x 216QAM
Threshold(dBm)Bit Rate (Mbit/s)Modulation
Monitoring the ODU Alarms, Continued
Threshold Alarms
The reception level fallsbelow the RSSIthreshold you have set
The temperature insidethe ODU exceeds thethreshold you have set
The power of the Tx IFsignal falls below -20 dBm.The +5 V output voltage
of the ODU internalpower supply unit fallsbelow +4,5 V
Monitoring the ODU Alarms, Continued
The +6,5 V outputvoltage of the ODU
internal powersupply unit falls
below +6 V
The -12 V outputvoltage of theODU internal
power supply unitfalls below -11 V
The +12 V outputvoltage of theODU internalpower supply unitfalls below +11 V
Radio Locks AlarmsThe Digit DirectSynthesizer is unlockedwith consequence no RFsignal at the PowerAmplifier output and thegeneration of the PA Outalarm. Contact themanufacturer for ODUreplacement.
The Loop Back Synthesizer isunlocked. This alarm can begenerated during the RFloopback test (ODU LOOPcommand button of the LOCALODU tabbed sheet). The ODULOOP command activates theLoop Back Synthesizer whichloops the Tx signal in the Rxpath.
The Rx Synthesizeris unlocked.
The Tx Synthesizer isunlocked withconsequence no RFsignal at the PowerAmplifier output and thegeneration of the PA Outalarm as well. Contactthe manufacturer forODU replacement.
Monitoring the ODU Alarms, Continued
Open the Modem tabbed sheet.
Monitoring the Framer/Modem/CI Alarms
A hardware error hasoccurred in the Txpath of the Framer. Ifthe problem persists,contact themanufacturer for cardreplacement.
The Rx Synthesizer ofthe Modem is unlocked.
BER ≥ 10-3
BER ≥ 10-6 The Modem cannotdemodulate thecarrier information.
The alignment of theframe has been lost. Hardware error in the card.
Contact the manufacturer forreplacement.The Modem cannot recognize
the Link IdentificationNumber.
Monitoring the Framer/Modem/CI Alarms, Continued
Monitoring the Mux Alarms
Open the Mixed Ethernet tabbed sheet and then the MUX Data tabbed sheet.
The clock coming fromthe Framer/Modem/CIUnit has been lost.
The frame coming fromthe Framer/Modem/CIUnit has been lost.
The remote station cannot receivethe signal transmitted. As aconsequence, the remote stationsends the RAI alarm to the localstation.
Monitoring the Mux Alarms, Continued
Open the Power Supply tabbed sheet.
Monitoring the Power Supply Alarms
There is no inputvoltage at the PowerSupply Unit.
Not used
Monitoring the Power Supply Alarms, Continued
Monitoring the Tributaries/Service Channels Alarms
Open the Mixed Ethernet tabbed sheet and then the Tributaries Data tabbedsheet.
The AIS pattern (allones sequence) isapplied at the specifictributary input.When no AIS is appliedat the input, the opticalindication is green.
There is no signal at thespecific tributary input.
NOTE To monitor the service channels alarms, click the ServiceChannels tab in the Tributaries Data tabbed sheet.
Monitoring the Tributaries/Service Channels Alarms, Continued
Open the System tabbed sheet.
Monitoring the Indications of the User Alarms Inputs and Outputs
The AUX 1 connectorprovides four useralarms inputs and fouruser alarms outputs.
To monitor the indications of the user alarms inputs and outputs, open theSystem tabbed sheet and click Home I/O Status or Remote I/O Statusdepending on which you want to monitor.
Monitoring the Indications of the User Alarms Inputs and Outputs, Continued
You can select to monitor:
• the last 20 alarms
• the last 50 alarms
• all the alarms (up to 999)
Alarm log file = text type file created by the system when you select to monitorthe alarms. The filename is Log_<date>. When you close the managementapplication, the system saves this file in the same folder with the managementapplication.
NOTE Do not delete the alarm log file as the manufacturer may requestit in case of troubleshooting.
Monitoring the History of Alarms
Monitoring the History of Alarms, Continued
NOTEIn case of problems during the alarms history monitoring, makesure the alarms files names in the lcconfig.sys file are thealrm.nme and alrm.attr
On the System menu, point to Alarm log, then point to Activation, and then selectone of the following:
• Last 20 if you want to monitor the last 20 alarms• Last 50 if you want to monitor the last 50 alarms• All if you want to monitor all the alarms (the application can log up to 999
alarms)
Monitoring the History of Alarms, Continued
Alarmcountingnumber. Themost recentalarmappears atthe end of thelist. Up to 999alarms canappear in thelist. Onreceipt of the1000th alarm,the oldestalarm isautomaticallydeleted andthe new alarmappears atthe end of thelist.
Time and day(according tothe IDR-Cclock) the alarmwas generated.
State•ON: enabled alarm•OFF: disabled alarm
Polarity•Normal is the NormalOpen (default). Withthis setting, as soonas an alarm appears atthe input/output pin ofthe AUX 1 connector,the micro-switch inthe internal of thesystem connects thisalarm input/output pinto the alarminput/output GND ofthe connector•Reverse is the NormalClose (….disconnects)The alarm
input/outputat the AUX 1connector
Monitoring the History of Alarms, Continued
1. upload these files from the CMS Unit
2. make the changes you want
3. delete the old files from the CMS Unit
4. download the new files to the CMS Unit
NOTE
The alarms attributes are recorded in the alrm.nme and alrm.attr files stored inthe CMS Unit. If you want to change the alarm attributes, you should:
Although the application gives you the ability to change the alarmsattributes, you are recommended not to do this unless you are anexperienced user.
Changing the Alarms Attributes
1. Create two folders. You will use the one folder to store the currentalrm.nme and alrm.attr files of the CMS unit and the other folder to storethe new alrm.nme and alrm.attr files you will create.
2. On the System menu, select FTP Tool.
Changing the Alarms Attributes, Continued
3. Type the IP address of the IDR-C
4. Click
5. Select the folderwhere you want tomove the alrm.nmeand alrm.attr files
6. Select the alrm.nme file
7. Click
8. Browse the folder to which you want to move the file andclick Save
9. Repeat steps 6, 7 and 8 for the alrm.attr file and then close the FTP Tool.
The Uploading Procedure - FTP Tool
Changing the Alarms Attributes, Continued
On the System menu, point to Alarm Log and then select Alarm Tool.
Changing the Alarms Attributes, Continued
1. SelectOpen toopen thealrm.nmeandalrm.attrfiles
2. Select theappropriate tab.
3. Type the new name ofthe alarm.
4. Select the severity.
5. Select the polarity.6. Select the box ifyou want the alarmto appear at theuser output. 7. Select the box if you want
the alarm to be stored inthe alarm log file and thusappear in the alarmshistory list.
8. Repeat for as manyalarms as needed.
9. Click OK.
Alarm Tool
10. SelectSave andsave the newalrm.nme andalrm.attr filesin the folderyou havecreated tosave the newfiles.
11. Exit the Alarm Tool.
Changing the Alarms Attributes, Continued
1. Type the IPaddress ofthe IDR-C.2. Click.
5. Select the newalrm.nme andalrm.attr files youhave created.
3. Select the alrm.nmeand alrm.attr files.
4. Click
7. Close the FTP Tool.
8. On the System menu, select Sys Restart to activate the new files or pressthe RST button on the front panel of the IDU-LC.
The Downloading Procedure - FTP Tool
6. Click
Changing the Alarms Attributes, Continued
Service Calls
Home Station
Remote Station
PTT Handset
PTT Handset
Point-to-point full duplex communication
Loopbacks
The application gives you the ability to perform the following loopbacks:
• LLOOP: Line Loop (Local and Remote Station)• DLOOP: Digital Loop (Local Station)• ODU LOOP (Local Station)• RLOOP: Radio Loop (Local and Remote Station)
RF Link
LocalODU
LocalMux
LocalFramer/Modem/
CI
LLOOP DLOOPRLOOP ODU LOOP
RemoteODU
RemoteMux
RemoteFramer/Modem/
CI
LLOOPDLOOP RLOOPODU LOOP
Recommended Loopbacks Order 1. LLOOP2. DLOOP3. ODU LOOP4. RLOOP
Loopbacks, Performance Monitoring & Other Tests
Performing the LLOOP
Open theMixedEthernettabbed sheetand then theTributariesData tabbedsheet.
Click toperform theLLOOPloopback
Loopbacks, Performance Monitoring & Other Tests, Continued
Performing the DLOOP
Open the Modem tabbed sheet.
Click toperformthe DLOOPloopback
Loopbacks, Performance Monitoring & Other Tests, Continued
Loopbacks, Performance Monitoring & Other Tests, Continued
Performing the ODU LOOP
Open the ODU tabbed sheet.
NOTE Switch-off the remote station and then proceed to the ODU LOOP!
Click toperform theODU LOOPloopback
Select the ODU
Performing the RLOOPOpen the Mixed Ethernet tabbed sheet and then the Tributaries Data tabbed sheet.
Click toperform theRLOOPloopback
Loopbacks, Performance Monitoring & Other Tests, Continued
Monitoring the Performance of the RF LinkYou can monitor the performance of the RF link by performing the G.826 block erroranalysis test (ITU-T Recommendation G.826: “End-to-end error performanceparameters and objectives for international, constant bit-rate digital paths andconnections”)
Open theSystem tabbedsheet.
Loopbacks, Performance Monitoring & Other Tests, Continued
Monitoring the Performance of the RF Link, Continued
If the Test Running led is on, click STOP TEST and then click START TEST otherwise click STARTTEST. Wait a few milliseconds for the internal error counters to reset. Then the test starts.
Unavailable Time + Available Time
The Available Time (s) starts after 10consecutive non-SES seconds havepassed.
The Unavailable Time (s)starts when 10 consecutiveseverely errored secondshave been detected. These 10seconds are part of theUnavailable Time. If abidirectional path isconsidered, the UnavailableTime is if one or bothdirections are unavailable.
Background Block Error, anerrored block not occurringas part of a SES.
Errored Second,a one-secondperiod with oneor more erroredor lost blocks.
Severely Errored Second,a one-second periodwhich contains ≥ 30 %errored blocks or at leastone defect; one-secondperiod which has a biterror ratio ≥ 10-3 or duringwhich Loss of Signal orAlarm Indication Signal isdetected; SES is a subsetof ES.
Loopbacks, Performance Monitoring & Other Tests, Continued
Enabling the AIS Transmission at the Tributaries Outputs
Open the Mixed Ethernet and thenthe MUX Data tabbed sheet.
Click Toggle AIS to enable (default) / disablethe AIS transmission at the tributaries outputsin case of RF link failure so that if there aresystems connected to the IDR-C, they willcontinue to be synchronized with it.
The led turns on if you have enabled the AIStransmission.
Loopbacks, Performance Monitoring & Other Tests, Continued
Open the Modem tabbed sheet.
Click SinCos to interrupt the QAM or QPSKmodulation and impose the SinCosmodulation. Then you will be able to checkthe central transmission frequency fc duringlaboratory testing.
Imposing SinCos Modulation
Loopbacks, Performance Monitoring & Other Tests, Continued
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