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
 Software Flash Upgrading
DoubleTalk Carrier-in-Carrier
Verification
 Data Interfaces
Remote Control
Turbo Product Coding
 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
 Alarm Interface Connector Pin Assignments
Alarms Connector
Pin # Signal Function Name
 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
 LED
Front Panel LED Indicators
Color Condition
 ENT
Diamond Keypad Presently used on all Units
CLR
 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
 ConfigRemoteSerial
ConfigRemote Remote Control
ConfigRemoteSerialInterface
 ConfigRemoteSerialBaudrate
ConfigRemoteSerialInterfaceRS485 RS-485 Bus Address
ConfigRemoteEthernet
 ConfigRemoteEthernetSNMP
ConfigRemoteEthernetGateway
ConfigRemoteEthernetAddress
ConfigRemoteEthernetMAC
 ConfigRemoteEthernetSNMPTraps
ConfigRemoteEthernetSNMPCommunities
Snmp
 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
 ConfigTxPwrManual Manual Mode
ConfigTxPwr Transmit Power Level Mode
ConfigTxPwrAUPC Aupc Mode
 ConfigTxPwrAUPC DEMOD-UNLOCK
ConfigTxPwrAUPC Target Eb/No
ConfigTxPwrAUPC MAX Range
ConfigTxPwrAUPC Alarm
 ConfigTxScram Scrambler
ConfigTxPwrCombined Combined Transmit Power
ConfigTxClk TX Clocking Mode
 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
 ConfigRxBuf RX Buffer Clock Source
ConfigRxDescram Descrambler
ENT
 ConfigRxMisc Rx Miscellaneous
ConfigRxInv RX Inversion Functions
 ConfigRxMiscRxα RX Roll-Off α factor
ConfigRxMiscEbNo Eb/No Alarm
ConfigRxCnC CARRIER-IN-CARRIER→
 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
 BUC Alarm
Reference Alarm
LNB 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
 ConfigODULNBVoltage LNB Voltage
ConfigODULNB LNB
LNB DC
 ConfigODULNB10MHz LNB 10MHz
ConfigODULNBPower-On/Off LNB POWER- ON/OFF
ConfigODULNBAlarm LNB Alarm
 LNB Frequency Mix
ConfigODULNBLO LO
ConfigODULNBMix MIX
LNB Current Alarm Lower Limit 050mA ENT
 MonitorAlarmsUnit Unit Alarms
MonitorAlarms Alarms
 MonitorAlarmsTransmit Transmit Alarms
MonitorAlarmsReceive Receive Alarms
MonitorAlarmsODU Outdoor Unit Alarms
 MonitorEvent-Log EVENT-LOG or Stored Events
MonitorRx-Params RECEIVE-PARAMETERS
 MonitorEvent-LogView View Stored Events
Log 023 30/11/02 Fault Demod Lock 3 ,ENT
Log 024 30/11/97 Clear Demod Lock 3 ,ENT
 MonitorStats Link Statistics for grouped as modem only
Link Statistics View Clear-All Config ENT
MonitorStatsView View Link Statistics
 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
 Mode Norm if 2 Dig 2 I/O 2 RF Tx-CW Tx1-0 ENT
Test Mode Bist ENT Spec-Analyzer
Test
 TX-CW
Norm If Loop Dig Loop RF Loop
TX-1,0
 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 Information
InfoRem Remote Control Information
Info Rem Tx Rx Buffer Frame Interface Mask Ref ID
 Tx 1140.000 05000.000 TUR 8P 17/18 S EXT -20.0 on N
InfoTx TX Information
Tx C N 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
 Update Cpld to v1.x.x? No Yes ENT
Current Active Image #1 Next Reboot Image #1 #2
Programming Cpld
 Fast
UtilityFAST Fast Code Options
 Edit 20 digit Fast Code 00000000000000000000 ENT
View Options ENT Redun Not Installed
 Forward Error Correction Options
 Viterbi Decoding Summary
Viterbi
For Against
 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
 Turbo Product Coding processing delay comparison
End-to-End Processing Delay
Available TPC Modes
 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
 This page is intentionally left blank
 Automatic Uplink Power Control
 Target Eb/No
Setting Aupc Parameters
Max Range
 Demod Unlock
Alarm
Compensation Rate
 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
 Web Server Menu Tree
Web Server Menu Tree
Level
 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
 Modulation
HIGHER-ORDER
Coding
 Hssi
Automatic Uplink Power Control Future
 Data Rate Ranges
 Miscellaneous
Framing Summary Future
FCC
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
 Instruction Code
Address
Slot Address
 ‘=’ code Target to Controller is used in two ways
Instruction Code Qualifier
 $ code target-to-controller is only used as follows
 Message Arguments
Remote Commands
End Of Packet
 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?
 SWR?
CFM?
FRW?
 IMG#
IMG=
IMG= IMG?
IMG
 ITP?
 Bulk Commands
 OGC#
OGC=
OGC= OGC?
OGC
 BAD=
Arguments For Command or Response to Query
Band Unit Only
 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=
 DTS=
Parameter Instruction Type Code Qualifier Drop Timeslot
Applies to Cards grouped As modem
 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
 CnC Carrier Offset
Symbol Rate Ratio
1st CnC Example Adjacent Carriers, CnC Ratio and Rain Fade
 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
 Eb/No Degradation At Site a Parameter Due To Fade At
3rd CnC Example Asymmetric Link With Rain Fade
Per Figure D- Qpsk
 Eb/No Degradation At Site B Parameter Due To Fade At
Conclusion
 Metric Conversions
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