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