Comtech EF Data CDM-425, Installation And Operation Manual

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CDM-425 Advanced Satellite Modem
Revision 0
Serial Remote Control 8–11 MN-CDM-425
Parameter
Type
Command
(Instruction
& Qualifier)
Number of
Arguments
Description of Arguments
Response to
Command
Query
(Instruction
& Qualifier)
Response to Query
Tx FEC Type TFT= 1 byte,
A, B, C, D
Command or Query.
Sets or returns Tx FEC Coding Type in the form x, where:
0=Reserved
1=Reserved
2=Reserved
3=Reserved
4=Reserved
5=Reserved
6=Reserved
7=Reserved
8=Reserved
9=Reserved
A=VersaFEC CCM or ACM (fixed in IP-ACM)
B=VersaFEC ULL
C=VersaFEC-2 Long Block
D=VersaFEC-2 Short Block
EXAMPLE: <0/TFT=0 (selects VersaFEC-2 Long Block)
TFT=
TFT?
TFT*
TFT#
TFT? TFT=x
(see Description of
Arguments)
Tx Modulation
Type
TMD= 1 byte,
0, 1, or
4 thru 8
Command or Query (Query only in ACM).
Sets or returns Tx Modulation Type in the form x, where:
0=BPSK
1=QPSK
2=Reserved
3=Reserved
4=16-QAM (VersaFEC only)
5=8-QAM (VersaFEC only) (Need FAST option)
6=8-ARY (VersaFEC-2 only)
7=16-ARY (VersaFEC-2 only)
8=32-ARY (VersaFEC-2 only)
Depending on FEC type, not all of these selections will be valid.
EXAMPLE: <0/TMD=1 (selects QPSK)
TMD=
TMD?
TMD*
TMD#
TMD? TMD=x
(see Description of
Arguments)
Tx FEC Code
Rate
TCR= 1 byte,
A thru Z,
a thru z, “, &, @, [, ],
{, }
Command or Query (Query only in ACM).
Sets or returns Tx FEC Code Rate in the form x, where:
0=Reserved
1=Reserved
2=Reserved
3=Reserved
4=Reserved
5=Reserved
6=Reserved
7=Reserved
8=Reserved
9=Reserved
A=VersaFEC CCM ModCod 0 – BPSK 0.488
B=VersaFEC CCM ModCod 1 – QPSK 0.533
C=VersaFEC CCM ModCod 2 – QPSK 0.631
D=VersaFEC CCM ModCod 3 – QPSK 0.706
TCR=
TCR?
TCR*
TCR#
TCR? TCR=x
(see Description of
Arguments)