Comtech EF Data CDM-425 Installation And Operation Manual page 335

Command
Parameter Number of
(Instruction
Type Arguments
& Qualifier)
Tx FEC Type TFT= 1 byte,
A, B, C, D
Tx Modulation TMD= 1 byte,
Type 0, 1, or
4 thru 8
Tx FEC Code TCR= 1 byte,
Rate A thru Z,
a thru z, ", &, @, [, ],
{, }
Serial Remote Control
Description of Arguments
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)
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)
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
8–11
CDM-425 Advanced Satellite Modem
Revision 0
Query
Response to
(Instruction Response to Query
Command
& Qualifier)
TFT= TFT? TFT=x
TFT? (see Description of
TFT* Arguments)
TFT#
TMD= TMD? TMD=x
TMD? (see Description of
TMD* Arguments)
TMD#
TCR= TCR? TCR=x
TCR? (see Description of
TCR* Arguments)
TCR#
MN-CDM-425