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C.6.2
Modulator (Tx) Commands / Queries
Tx Priority System = Highest priority commands indicated by
the parameters of lower priority.
Command
Arguments for
Parameter
(Instruction
Command or
Code and
Response to
Type
Qualifier)
Tx Overhead
TFM=
1 byte
Type
Tx FEC Type
TFT=
1 byte
Appendix C
Description of Arguments
Query
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)
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)
. Any change to a higher priority parameter can override any of
shading
C–13
SLM-5650B Satellite Modem
Query
Response to
Response to
(Instruction
Command
Query
Code and
Qualifier)
TFM=
TFM?
TFM=x
TFM?
(see Description of
Arguments)
TFM*
TFM#
TFT=
TFT?
TFT=x
TFT?
(see Description of
Arguments)
TFT*
TFT#
MN-SLM-5650B
Revision 2
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