Comtech EF Data CDM-600/600L - Manual (Page 208)

CDM-600/600L Open Network Satellite Modem Revision 3
Appendix D MN/CDM600L.IOM
D–16
Parameter
Type
Command
(Instruction
Code and
Qualifier)
Arguments for
Command or
Response to
Query
Description of Arguments
Response to
Command
Query
(Instruction
Code and
Qualifier)
Response to Query
Rx Demod
Type RMD= 1 byte, value
of 0 thru 5 Command or Query.
Rx Demodulation, where:
0=BPSK
1=QPSK
2=OQPSK
3=8PSK
4=16QAM (Turbo or Viterbi + RS only)
5=8-QAM (LDPC only)
(Requires TPC/LDPC codec and FAST option)
Depending on FEC type, not all of these selections will be valid.
All other codes are invalid.
Example: RMD=2 (selects OQPSK)
RMD=
RMD?
RMD*
RMD# RMD? RMD=x
(see Description of
Arguments)
Rx FEC Code
Rate RCR= 1 byte, value
of 0 thru 7 Command or Query.
Rx FEC Code Rate, where:
0 = Rate 1/2
1 = Rate 3/4
2 = Rate 7/8
3 = Rate 2/3 (8-PSK [TCM or LDPC only])
4 = Rate 1/1 (Uncoded [no FEC])
5 = Rate 21/44 (Turbo Only)
6 = Rate 5/16 (Turbo Only)
7 = Rate 0.95 (Turbo Only)
Depending on FEC type, not all of these selections will be valid.
Example: RCR=1 (selects Rate 3/4)
RCR=
RCR?
RCR*
RCR# RCR? RCR=x
(see Description of
Arguments)
Rx Data Rate RDR= 9 bytes Command or Query.
Rx Data Rate, in kbps, between 2.4 kbps to 20 Mbps.
Resolution=1 bps
Example: RDR=02047.999.
For Hardware Version 2.0 or higher with CDM-600/600L FW Ver
1.3.1 or higher, additional auxiliary G.703 sub-rates are available.
These are selected using:
00512.AUX
01024.AUX
02048.AUX
The connectors used for the Aux rates are IDI/DDO.
These Aux rates are not available with D&I or IDR.
RDR=
RDR?
RDR*
RDR# RDR? RDR=xxxxx.xxx
(see Description of
Arguments)
Eb/No Alarm
Point EBA= 4 bytes Command or Query.
Eb/No alarm point in dB, with a range between 0.1 and 16 dB.
Resolution=0.1 dB
Example: EBA=12.3
EBA=
EBA?
EBA*
EBA# EBA? EBA=xx.x
(see Description of
Arguments)