Comtech EF Data SLM-5650B - Modulator (Tx) Commands; Queries

SLM-5650B Satellite Modem
Revision 2
Appendix C C–13 MN-SLM-5650B
C.6.2 Modulator (Tx) Commands / Queries
Tx Priority System = Highest priority commands indicated by shading . Any change to a higher priority parameter can override any of
the parameters of lower priority.
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
Tx Overhead
Type
TFM=
1 byte
Command or Query.
Tx Overhead Type, where:
0 = None (Unframed)
1 = IBS
2 = IDR
3vReserved
4 = AUPC
Depending on Modem mode, not all selections will be valid.
Example: TFM=0 (selects Unframed mode)
TFM=
TFM?
TFM*
TFM#
TFM?
TFM=x
(see Description of
Arguments)
Tx FEC Type TFT= 1 byte Command or Query.
Tx FEC coding type, where:
0 = None (Uncoded)
1 = Viterbi
2 = Turbo
3 = Sequential
4 = LDPC ULL (Ultra Low Latency)
5 = LDPC LL (Low Latency)
6 = LDPC HP (High Performance)
Example: TFT=2 (selects Turbo coding)
TFT=
TFT?
TFT*
TFT#
TFT? TFT=x
(see Description of
Arguments)