Comtech EF Data CDM-600/600L - Manual (Page 207)

CDM-600/600L Open Network Satellite Modem Revision 3
Appendix D MN/CDM600L.IOM
D–15
D.6.2 Receive (Rx) Commands and Queries
RX Priority System = RIT (Highest priority) , RFM, RFT, RMD, RCR, and RDR (Lowest Priority), indicated by shading. Any change
to a higher priority parameter can override any of the parameters of lower priority.
Exception: Select DROP or INSERT mode using TFM or RFM (Framing type) which is highest 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
Rx Interface
Type RIT= 1 byte, value
of 0 thru 6 Command or Query.
Rx Interface Type, where:
0=RS422
1=V.35
2=RS232 (synchronous)
3=Balanced G.703
4=Unbalanced G.703
5=Audio (Data rate is fixed at 64 kbps) (IBS/EDMAC only)
6=LVDS
Example: RIT=1 (selects V.35)
RIT=
RIT?
RIT*
RIT# RIT? RIT=x
(see Description of
Arguments)
Rx Framing
Mode RFM= 1 byte, value
of 0 thru 6 Command or Query.
Rx Framing mode, where:
0=Unframed
1=IBS
2=IDR
3=INSERT (requires D&I FAST option)
4=EDMAC
5=D&I++ (requires D&I FAST option)
(CDM-600L requires FW Ver 1.2.0 or higher;
CDM-600 requires FW Ver 1.5.0 or higher)
6=ESC++ (CDM-600L requires FW Ver 1.3.0 or higher;
CDM-600 requires FW Ver 2.0.1 or higher)
Example: RFM=0 (selects Unframed mode)
RFM=
RFM?
RFM*
RFM# RFM? RFM=x
(see Description of
Arguments)
Rx FEC Type RFT= 1 byte, value
of 0 thru 9 Command or Query.
Rx FEC Type, where:
0=None (uncoded [rate 1/1]) with differential encoding ON
1=Viterbi
2=Viterbi + Reed-Solomon
3=Sequential
4=Sequential + Reed-Solomon
5=TCM (Trellis Code Modulation)
6=TCM + Reed-Solomon
7=Turbo (TPC)
8=None (uncoded [rate 1/1]) with differential encoding OFF
9=LDPC (Requires TPC/LDPC codec)
Example: RFT=1 (Viterbi only)
RFT=
RFT?
RFT*
RFT# RFT? RFT=x
(same format
as command argument)