Modulator (Tx) Commands / Queries - Comtech EF Data SLM-5650C CyberLynx Installation And Operation Manual

7.5.3

Modulator (Tx) Commands / Queries

Tx Priority System = (Highest priority) TFM, TFT, TMD, TCR, and TDR (Lowest Priority). Priority commands indicated by
change to a higher priority parameter can override any of the parameters of lower priority.
Command Arguments for
Parameter (Instruction Command or
Type Code and Response to
Qualifier) Query
Tx TFM= 1 byte
Overhead
Type
Tx FEC TFT= 1 byte
Type
Tx TMD= 1 byte
Modulation
Type
Serial Remote Control
Description of Arguments
Command or Query.
Tx Overhead Type, where:
0=None (Unframed)
1=IBS
2=IDR
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)
Command or Query.
Tx Modulation type, where:
0=BPSK
1=QPSK
2=OQPSK
3=8PSK
4=16QAM
5=8QAM
Depending on FEC type, not all selections will be valid.
Example: TMD=1 (selects QPSK)
SLM-5650C / SLM-5650C-ODU Satellite Modem
7–12
Revision 1
. Any
shading
Query
Response to (Instruction Response to
Command Code and Query
Qualifier)
TFM= TFM? TFM=x
TFM? (see Description of
TFM* Arguments)
TFM#
TFT= TFT? TFT=x
TFT? (see Description of
TFT* Arguments)
TFT#
TMD= TMD? TMD=x
TMD? (see Description of
TMD* Arguments)
TMD#
MN-SLM-5650C