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
Config„Remote„Serial
Config„Remote Remote Control
Config„Remote„Serial„Interface
Config„Remote„Serial„Baudrate
Config„Remote„Serial„Interface„RS485 RS-485 Bus Address
Config„Remote„Ethernet
Config„Remote„Ethernet„SNMP
Config„Remote„Ethernet„Gateway
Config„Remote„Ethernet„Address
Config„Remote„Ethernet„MAC
Config„Remote„Ethernet„SNMP„Traps
Config„Remote„Ethernet„SNMP„Communities
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
Config„Tx Transmit
TPC
Config„Tx„FEC TX FEC Type
Config„Tx„Mod Modulation Scheme
Tx FEC Vit Vit+RS TCM+RS
Tx Data Rate 05000.000kbps Sym02500.000ksps
Config„Tx„Code TX Code Rate
Config„Tx„Data TX Data Rate
Tx Code Rate 5/16 21/44 1/2 3/4 17/18
Tx if Freq 1156.3456 MHz
Config„Tx„Freq TX if Frequency
Tx Common Output State Off On
Config„Tx„On/Off Transmit ON/OFF Control
Tx if Freq 1156.3456 MHz RF=14156.3456 ENT
Tx Output State On Off RxTxInhibit Common , ENT
Config„Tx„Pwr„Manual Manual Mode
Config„Tx„Pwr Transmit Power Level Mode
Config„Tx„Pwr„AUPC Aupc Mode
Config„Tx„Pwr„AUPC DEMOD-UNLOCK
Config„Tx„Pwr„AUPC Target Eb/No
Config„Tx„Pwr„AUPC MAX Range
Config„Tx„Pwr„AUPC Alarm
Config„Tx„Scram Scrambler
Config„Tx„Pwr„Combined Combined Transmit Power
Config„Tx„Clk TX Clocking Mode
Tx Data Sense
Config„Tx„Inv 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
Config„Tx„Txα TX Roll-Off α factor
Config„Rx Receive
Tx Roll-off 20% 35% ENT
Case Rules Comment
Config„Rx„FEC 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
Config„Rx„Demod Demodulation Scheme
Config„Rx„Code RX Code Rate
Demodulation Bpsk Qpsk 8-PSK 16-QAM
Rx Data Rate 05000.000kbps Sym02500.000ksps
Config„Rx„Data RX Data Rate
Demod Acquisition Range
Config„Rx„Freq RX Frequency
Config„Rx„Acq Demod Acquisition Range
Rx if Freq1156.3456 MHz RF=12156.3456 ENT
Config„Rx„Buf RX Buffer Clock Source
Config„Rx„Descram Descrambler
ENT
Config„Rx„Misc Rx Miscellaneous
Config„Rx„Inv RX Inversion Functions
Config„Rx„Misc„Rxα RX Roll-Off α factor
Config„Rx„Misc„EbNo Eb/No Alarm
Config„Rx„CnC CARRIER-IN-CARRIER→
Please Wait
Config„Rx„CnC„Mode CnC→ Mode of Operation
Config„Rx„CnC„FrqOffs CnC Frequency Offset
Please Check TX Power Level
Config„Group„Modem
Config„Rx„CnC„SrchDelay CnC Search Delay
Config„Rx„CnC„ReAcq CnC RE-ACQUISITION Time
Config„Group Grouping MOD/DEMOD Cards
Config„Group„Redundancy„Config „12
Config„Group„Redundancy
Config„Group„Redundancy„Config
Config„Group„Redundancy„Config „11
Config„Frame„Unframed Unframed
Config„Group„Redundancy„Mode
Config„Group„Redundancy„Mode„Manual
Config„Frame Framing Mode
Master Slave
Edmac Mode
Framing mix AUPC-Only
AUPC+EDMAC
Address This Slave Unit ENT
Config„Frame„D&I++ D&I++
Distant-end Base Address
0240
RTS/CTS operation , ENT Loop,RTS Controls Tx Out
Config„Interface 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
Config„Ref Reference Oscillator
Config„Mask 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
Config„ODU Outdoor Unit for L-Band Unit Only
Config„ODU„BUC Block Upconverter BUC
ODU
BUC M&C
Config„ODU„BUC„M&C-FSK M&C FSK
Config„ODU„BUC„M&C-FSK„Address FSK Comms
Config„ODU„BUC„M&C-FSK„Address FSK Address
Config„ODU„BUC„Alarm BUC Alarm
Config„ODU„BUC„M&C-FSK„Tx-On/Off FSK TX-ON/OFF
Config„ODU„BUC„DC-Pwr BUC DC Power
Config„ODU„BUC„10MHz BUC 10MHz
Power-On Delay
Config„ODU„BUC„Delay BUC Delay
BUC Current Alarm Upper Limit1200mA
BUC Current Alarm Lower Limit1200mA
Config„ODU„BUC„Mix BUC MIX
Config„ODU„BUC„LO BUC LO
Config„ODU„LNB„Voltage LNB Voltage
Config„ODU„LNB LNB
LNB DC
Config„ODU„LNB„10MHz LNB 10MHz
Config„ODU„LNB„Power-On/Off LNB POWER- ON/OFF
Config„ODU„LNB„Alarm LNB Alarm
LNB Frequency Mix
Config„ODU„LNB„LO LO
Config„ODU„LNB„Mix MIX
LNB Current Alarm Lower Limit 050mA ENT
Monitor„Alarms„Unit Unit Alarms
Monitor„Alarms Alarms
Monitor„Alarms„Transmit Transmit Alarms
Monitor„Alarms„Receive Receive Alarms
Monitor„Alarms„ODU Outdoor Unit Alarms
Monitor„Event-Log EVENT-LOG or Stored Events
Monitor„Rx-Params RECEIVE-PARAMETERS
Monitor„Event-Log„View View Stored Events
Log 023 30/11/02 Fault Demod Lock 3 ,ENT
Log 024 30/11/97 Clear Demod Lock 3 ,ENT
Monitor„Stats Link Statistics for grouped as modem only
Link Statistics View Clear-All Config ENT
Monitor„Stats„View View Link Statistics
Clear all Stored Stats? No Yes
Monitor„Stats„Config Configure Stats
Stats Logging Interval Disabled,ENT
Monitor„Stats„Clear-All Clear ALL Stats
Monitor„CnC Monitor CARRIER-IN-CARRIER CnC
Monitor„AUPC Monitor AUPCfor grouped as modem only
ODU LNB
Monitor„ODU 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
Info„Rem 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
Info„Tx TX Information
Tx C N N
Demod Sweep Acquisition range
Info„Rx RX Information
Rx 1140.000 05000.000 TUR 8P 17/18 D RX BUF +/-32k N
Rx C N N
Info„Interface Interface Information
Buffer Enabled Tx=Rx ENT
Info„Buffer Buffer Information
Info„Frame Framing and Edmac Information
Character TST Message
Info„Mask Alarm Mask Information
Info„Ref Frequency Reference
Info„ID Circuit Identification
No YES
Save/Load„Save Save Configuration
Contains No Data! ENT
Save/Load„Load Load Configuration
New Config has been Loaded From Location
Empty ENT
Real-Time Clock , ,ENT Time=120000 Date24/04/03
Utility„RxBuffer Buffer Recenter
Utility„Clock REAL-TIME Clock
Utility RxBuffer Clock Ref ID Display Firmware Fast
Internal Freq
Utility„Ref Reference Adjust
Warm-up delay ENT
Utility„ID Circuit Identification
Utility„Firmware Firmware
Utility„Display Display Brightness
Update Cpld to v1.x.x? No Yes ENT
Current Active Image #1 Next Reboot Image #1 #2
Programming Cpld
Fast
Utility„FAST 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
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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
480 333 2200 Phone 480 333 2161 FAX