Revision
CDM-Qx
Page
Acquisition range
Errata a
Page
Errata B
Page
Rx Rs n/k ENT IESS-310 network 219/201
Errata C
Page
Tx Rs n/k ENT IESS-310 network 219/201
Errata D
Page
Part Number MN/CDMQx.IOM Revision January 20,2007
Customer Support
Table of Contents
Chapter Functional Description External Connections
Comparison of all TPC Modes
Evolution of TPC in Comtech Products
Management Information Base MIB Files
11-1
About this Manual
Electrical Safety
International Symbols
CE Mark
Warranty Policy
CDM-Qx Satellite Modem Revision Preface MN/CDMQx.IOM Xii
CDM-Qx/QxL
Introduction
Features
Verification
DoubleTalk Carrier-in-Carrier
Software Flash Upgrading
Turbo Product Coding
Remote Control
Data Interfaces
Major Assemblies
Assembly Description
Fast
Fast Options and Hardware Options
Hardware Options
Fast Accessible Options
Fast System Theory
Implementation
Supporting Hardware and Software
Compatibility
Band
CDM-Qx Satellite Modem Revision Introduction MN/CDMQx.IOM
Unpacking
Installation
Mounting
Optional Rear-Mounting Installation Bracket
Installation of the Optional Mounting Brackets
Observe the following
Configuration
Select Internal if Loop
Connect External Cables
Functional Description
Page
Modem Block Diagram
Page
Connections
LED
Front Panel
Rear Panel
Rear Panel
Page
IEC
Modem Rear Panel Connectors
Name Ref. Desig Connector Type Function
BNC
RF Output 75 or 50Ω
Use for 2-wire RS-485 operation
2 M&C 10/100BaseT Connector
3 485/232 Connector
Remote Control Interface Connector Pin Assignments
Pin # Signal Function Name
Alarms Connector
Alarm Interface Connector Pin Assignments
Pin # Signal Function Name Direction
Balanced G.703 Connector Tx/Rx Connector
Unbalanced G.703 Tx/Rx Connectors
Balanced G.703 Interface Connector Pin Assignments
RS-232 Circuit #
7 RS-530 Data Interface Connector
Pin # Generic Signal Description Direction RS-422 RS
Lvds
Xx6. Quad E1 Data Interface J1 Connector Pin Assignments
Quad E1 Data Interface Connectors
AC Power Specifications
RX and TX if Connectors
AC Power Connector
DC Power Connector
Ground Connector
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Operation
Color Condition
Front Panel LED Indicators
LED
CLR
Diamond Keypad Presently used on all Units
ENT
TXF
Left-Hand Display Area
Modems
Right Hand Display Area
MD MD
Redundancy
RXS
Accessing the Display Area
Spectrum Analyzer
Right-Hand Display Area
Principle Menu Tree
ODU
Main Menu Config Monitor Test Info Save/Load Util ODU
Opening Screen
Comtech EF Data CDM-Qx Firmware Version
Config Remote Tx Rx Group Frame Interface Ref Mask ODU
Config
ConfigRemoteSerialInterface
ConfigRemote Remote Control
ConfigRemoteSerial
ConfigRemoteEthernet
ConfigRemoteSerialInterfaceRS485 RS-485 Bus Address
ConfigRemoteSerialBaudrate
ConfigRemoteEthernetSNMP
ConfigRemoteEthernetGateway
ConfigRemoteEthernetAddress
ConfigRemoteEthernetMAC
Snmp
ConfigRemoteEthernetSNMPCommunities
ConfigRemoteEthernetSNMPTraps
Trap IP Addr#2 ENT
Trap Community , ENT comtech
Trap Version ENT SNMPv1 SNMPv2
Trap IP Addr#1 ENT
Tx FEC Mod Code Data Freq On/Off Pwr Scram Clk Inv Txα
ConfigTx Transmit
TPC
ConfigTxFEC TX FEC Type
ConfigTxMod Modulation Scheme
Tx FEC Vit Vit+RS TCM+RS
Tx Data Rate 05000.000kbps Sym02500.000ksps
ConfigTxCode TX Code Rate
ConfigTxData TX Data Rate
Tx Code Rate 5/16 21/44 1/2 3/4 17/18
Tx if Freq 1156.3456 MHz
ConfigTxFreq TX if Frequency
Tx Common Output State Off On
ConfigTxOn/Off Transmit ON/OFF Control
Tx if Freq 1156.3456 MHz RF=14156.3456 ENT
Tx Output State On Off RxTxInhibit Common , ENT
ConfigTxPwrAUPC Aupc Mode
ConfigTxPwr Transmit Power Level Mode
ConfigTxPwrManual Manual Mode
ConfigTxPwrAUPC DEMOD-UNLOCK
ConfigTxPwrAUPC Target Eb/No
ConfigTxPwrAUPC MAX Range
ConfigTxPwrAUPC Alarm
ConfigTxClk TX Clocking Mode
ConfigTxPwrCombined Combined Transmit Power
ConfigTxScram Scrambler
Tx Data Sense
ConfigTxInv TX Inversion Functions
Tx Inversion functions Spectrum Data Clock ,ENT
Tx Spectral Inversion Normal Inverted
RxFEC Demod Code Data Freq Acq Descram Buf Inv Misc CnC
ConfigTxTxα TX Roll-Off α factor
ConfigRx Receive
Tx Roll-off 20% 35% ENT
Case Rules Comment
ConfigRxFEC RX FEC Type
Rx FEC Vit Vit+RS
TCM+RS
Rx Code Rate 5/16 21/44 1/2 3/4 7/8 17/18
ConfigRxDemod Demodulation Scheme
ConfigRxCode RX Code Rate
Demodulation Bpsk Qpsk 8-PSK 16-QAM
Rx Data Rate 05000.000kbps Sym02500.000ksps
ConfigRxData RX Data Rate
Demod Acquisition Range
ConfigRxFreq RX Frequency
ConfigRxAcq Demod Acquisition Range
Rx if Freq1156.3456 MHz RF=12156.3456 ENT
ENT
ConfigRxDescram Descrambler
ConfigRxBuf RX Buffer Clock Source
ConfigRxMisc Rx Miscellaneous
ConfigRxInv RX Inversion Functions
ConfigRxCnC CARRIER-IN-CARRIER→
ConfigRxMiscEbNo Eb/No Alarm
ConfigRxMiscRxα RX Roll-Off α factor
Please Wait
ConfigRxCnCMode CnC→ Mode of Operation
ConfigRxCnCFrqOffs CnC Frequency Offset
Please Check TX Power Level
ConfigGroupModem
ConfigRxCnCSrchDelay CnC Search Delay
ConfigRxCnCReAcq CnC RE-ACQUISITION Time
ConfigGroup Grouping MOD/DEMOD Cards
ConfigGroupRedundancyConfig 12
ConfigGroupRedundancy
ConfigGroupRedundancyConfig
ConfigGroupRedundancyConfig 11
ConfigFrameUnframed Unframed
ConfigGroupRedundancyMode
ConfigGroupRedundancyModeManual
ConfigFrame Framing Mode
Master Slave
Edmac Mode
Framing mix AUPC-Only
AUPC+EDMAC
Address This Slave Unit ENT
ConfigFrameD&I++ D&I++
Distant-end Base Address
0240
RTS/CTS operation , ENT Loop,RTS Controls Tx Out
ConfigInterface Data Interface
Interface RS422 V.35 RS232
Hssi ASI G.703 QDI None
HDB3 AMI
703 E1 Line Code HDB3 AMI , ENT
T1 Line Length Feet
HDB3 AMI
Frequency Reference Internal MHz ENT
ConfigRef Reference Oscillator
ConfigMask Mask
Alarm Mask Transmit Receive Reference BUC LNB ,ENT
AGC Alarm
Tx Alarm Mask Tx-FIFO BPV Tx-AIS ENT
Tx-FIFO Alarm ENT Active Masked
Rx Alarm Mask AGC Eb/No Rx-AIS Buffer
LNB Alarm
Reference Alarm
BUC Alarm
BUC LNB
ConfigODU Outdoor Unit for L-Band Unit Only
ConfigODUBUC Block Upconverter BUC
ODU
BUC M&C
ConfigODUBUCM&C-FSK M&C FSK
ConfigODUBUCM&C-FSKAddress FSK Comms
ConfigODUBUCM&C-FSKAddress FSK Address
ConfigODUBUCAlarm BUC Alarm
ConfigODUBUCM&C-FSKTx-On/Off FSK TX-ON/OFF
ConfigODUBUCDC-Pwr BUC DC Power
ConfigODUBUC10MHz BUC 10MHz
Power-On Delay
ConfigODUBUCDelay BUC Delay
BUC Current Alarm Upper Limit1200mA
BUC Current Alarm Lower Limit1200mA
ConfigODUBUCMix BUC MIX
ConfigODUBUCLO BUC LO
LNB DC
ConfigODULNB LNB
ConfigODULNBVoltage LNB Voltage
ConfigODULNBAlarm LNB Alarm
ConfigODULNBPower-On/Off LNB POWER- ON/OFF
ConfigODULNB10MHz LNB 10MHz
LNB Frequency Mix
ConfigODULNBLO LO
ConfigODULNBMix MIX
LNB Current Alarm Lower Limit 050mA ENT
MonitorAlarmsUnit Unit Alarms
MonitorAlarms Alarms
MonitorAlarmsODU Outdoor Unit Alarms
MonitorAlarmsReceive Receive Alarms
MonitorAlarmsTransmit Transmit Alarms
MonitorEvent-Log EVENT-LOG or Stored Events
MonitorRx-Params RECEIVE-PARAMETERS
Log 024 30/11/97 Clear Demod Lock 3 ,ENT
Log 023 30/11/02 Fault Demod Lock 3 ,ENT
MonitorEvent-LogView View Stored Events
MonitorStatsView View Link Statistics
Link Statistics View Clear-All Config ENT
MonitorStats Link Statistics for grouped as modem only
Clear all Stored Stats? No Yes
MonitorStatsConfig Configure Stats
Stats Logging Interval Disabled,ENT
MonitorStatsClear-All Clear ALL Stats
MonitorCnC Monitor CARRIER-IN-CARRIER CnC
MonitorAUPC Monitor AUPCfor grouped as modem only
ODU LNB
MonitorODU Monitor ODU for L-Band Unit only
Test
Test Mode Bist ENT Spec-Analyzer
Mode Norm if 2 Dig 2 I/O 2 RF Tx-CW Tx1-0 ENT
TX-1,0
Norm If Loop Dig Loop RF Loop
TX-CW
Bert Control 10E-3Err=OFF Restart=NO SyncThres=256
Bist BERT-Config BERT-Mon BERT-Control ENT
Bert Config Tx=ON Rx=ON Tx-Pat=2047 Rx-Pat=2047
Bert Monitor Errs=0000253 BER=8.5E-07
Spectrum Analyzer
Mode Config
Spectrum Analyzer Mode
Config Spectrum Analyzer CenterFreq Span
If Loopback
Info Rem Tx Rx Buffer Frame Interface Mask Ref ID
InfoRem Remote Control Information
Info Information
Tx C N N
InfoTx TX Information
Tx 1140.000 05000.000 TUR 8P 17/18 S EXT -20.0 on N
Demod Sweep Acquisition range
InfoRx RX Information
Rx 1140.000 05000.000 TUR 8P 17/18 D RX BUF +/-32k N
Rx C N N
InfoInterface Interface Information
Buffer Enabled Tx=Rx ENT
InfoBuffer Buffer Information
InfoFrame Framing and Edmac Information
Character TST Message
InfoMask Alarm Mask Information
InfoRef Frequency Reference
InfoID Circuit Identification
No YES
Save/LoadSave Save Configuration
Contains No Data! ENT
Save/LoadLoad Load Configuration
New Config has been Loaded From Location
Empty ENT
Real-Time Clock , ,ENT Time=120000 Date24/04/03
UtilityRxBuffer Buffer Recenter
UtilityClock REAL-TIME Clock
Utility RxBuffer Clock Ref ID Display Firmware Fast
Internal Freq
UtilityRef Reference Adjust
Warm-up delay ENT
UtilityID Circuit Identification
UtilityFirmware Firmware
UtilityDisplay Display Brightness
Programming Cpld
Current Active Image #1 Next Reboot Image #1 #2
Update Cpld to v1.x.x? No Yes ENT
Fast
UtilityFAST Fast Code Options
Edit 20 digit Fast Code 00000000000000000000 ENT
View Options ENT Redun Not Installed
Forward Error Correction Options
For Against
Viterbi
Viterbi Decoding Summary
Reed-Solomon Outer Codec
Concatenated R-S Coding Summary
Closed Network Modes
PSK/TCM Coding Summary
Trellis Coding
Evolution of TPC in Comtech Products
Turbo Product Codec Hardware Option Introduction
Available TPC Modes
End-to-End Processing Delay
Turbo Product Coding processing delay comparison
Comparison of all TPC Modes
Turbo Product Coding Summary
BER
Viterbi Decoding
Viterbi with
Outer Code
PSK/TCM Rate 2/3
Decoding, with
Without 219, 201 RS
Comtech Turbo Product Codec Rate 3/4 QPSK, 8-PSK 16-QAM
CDM-Qx Satellite Modem Forward Error Correction Options
Comtech Turbo Product Codec Rate 7/8 QPSK, 8-PSK 16-QAM
Comtech Turbo Product Codec
BPSK/QPSK
Rate 21/44 Bpsk and Rate 5/16 Bpsk Turbo
BER
Page
Theory Of Operation
Edmac Channel
M&C Connection
Setup Summary
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Automatic Uplink Power Control
Max Range
Setting Aupc Parameters
Target Eb/No
Compensation Rate
Alarm
Demod Unlock
Monitoring
DoubleTalk Carrier-in-Carrier
Page
Transponder Utilization with and without CnC→
Page
Redundancy
CDM-Qx Satellite Modem Revision Redundancy MN/CDMQx.IOM 10-2
Ethernet Management Interface Protocols
Management
Web
Web Server Http Interface
Level
Web Server Menu Tree
Web Server Menu Tree
11-4
11-5
11-6
11-7
Management Information Base MIB Files
Snmp Interface
Snmp Traps
Snmp Community Strings
Telnet Interface
Alarms and Faults SNMPv2 notifications
11-11
11-12
Page
Page
FEC
Modulator
CDM-Qx Transmit
Power Spectral Density
Referred to symbol rate
Comtech EF Data
Turbo Product
Demodulator
Viterbi
PSK/TCM Codec
Coding
HIGHER-ORDER
Modulation
Hssi
Automatic Uplink Power Control Future
Data Rate Ranges
FCC
Framing Summary Future
Miscellaneous
Page
Appendix B. Flash Upgrading
Ethernet FTP upload procedure
Construction
Sector
CDM-Qx Satellite Modem Revision Flash Upgrading MN/CDMQx.IOM
RS-485
Appendix C. Remote Control
Basic Protocol
RS-232
Example 0135/TRQ=70.2345CR Target-to-controller
Packet Structure
Start Of Packet
Controller-to-target
Slot Address
Address
Instruction Code
‘=’ code Target to Controller is used in two ways
Instruction Code Qualifier
$ code target-to-controller is only used as follows
End Of Packet
Remote Commands
Message Arguments
CDM-Qx Satellite Modem Revision Remote Control MN/CDMQx.IOM
TX Remote Commands
TCR#
TCR=
TCR?
TCR
TSI# TSI$
TSI=
TSI= TSI?
TSI
TCK#
TCK=
TCK= TCK?
TCK
RFQ# RFQ$
RFQ=
RFQ= RFQ?
RFQ
=QPSK RMD#
RMD=
RMD= RMD?
=BPSK RMD
RDR#
RDR=
RDR= RDR?
RDR
RSW#
RSW=
RSW= RSW?
RSW
EBA# EBA$
EBA=
EBA= EBA?
EBA
ITF#
ITF=
ITF= ITF?
ITF
ERF=
ESA=
ESA= ESA?
ESA
TST#
TST=
TST= TST?
TST
AUP#
AUP=
AUP= AUP?
AUP
LBO#
LBO=
LBO= LBO?
LBO
HHC
Hssi
HHC=
HHC?
Applies to
CST#
CST=
CST?
CST
TIM#
TIM=
TIM= TIM?
TIM
IRM#
IRM=
IRM = IRM?
IRM
FBU#
FBU=
FBU= FBU?
FBU
CSD#
CSD=
CSD?
CSD
EID?
Query Commands
UID?
Bytes
FLT?
=Change in fault
REB?
WHO?
RNE=
CC is Fault Code numbers, as in FLT? Or Infor Code, which
RNS=CR
CDM?
RSL?
RX BER
CRM?
FRW?
CFM?
SWR?
IMG#
IMG=
IMG= IMG?
IMG
ITP?
Bulk Commands
OGC#
OGC=
OGC= OGC?
OGC
Band Unit Only
Arguments For Command or Response to Query
BAD=
BUC LO BLO=
BOE=
BCH=
BCL=
BSV?
BUC
BUT?
BPA?
Control Band Unit Only
Parameter Instruction Type Code Qualifier LNB Power
Parameter Instruction Type Code Qualifier
Parameter Command Instruction Type Code Qualifier
BCT$
BCT=
BCT= BCT?
BCT#
SPM= SPM?
SPM=
SPF=
SPS=
DNI= DNI? DNI# DNI$ DNI
DNI=
Applies to Cards grouped As modem
Parameter Instruction Type Code Qualifier Drop Timeslot
DTS=
CDM-Qx Satellite Modem Revision Remote Control MN/CDMQx.IOM
Carrier-in-CarrierDescription
Performance Characterization
Figure D-1. Adjacent Carrier a As Tested and BAs Plotted
Degradation Due To Carrier Spacing
Carrier Spacing For 35% Rolloff
Carrier Spacing For
20% Rolloff
Degradation ≤ 0.5 dB
PSK 3/4 Turbo, α = 35%
Figure D-5. Adjacent Carrier Cases
Selecting The Adjacent Carrier Curve
Found., or D-4
Curve To Use In Figure D-2, Error
Carrier-in-Carrier Ratio CnC Ratio
Case Desired Adjacent Carrier
Figure D-7. CnC Ratio For Qpsk and 8-PSK
1st CnC Example Adjacent Carriers, CnC Ratio and Rain Fade
Symbol Rate Ratio
CnC Carrier Offset
Per Figure D
DL Fade UL Fade Site a Site B
Site a Site B
Comment
Figure D-10. Link With Fading At Site a
2nd CnC Example CnC Ratio With Asymmetric Links
Parameters Site a Site B
Link parameters and results are summarized in the table
Per Figure D- Qpsk
3rd CnC Example Asymmetric Link With Rain Fade
Eb/No Degradation At Site a Parameter Due To Fade At
Eb/No Degradation At Site B Parameter Due To Fade At
Conclusion
Metric Conversions
480 333 2200 Phone 480 333 2161 FAX