Priority System - Comtech EF Data CDM-710 Installation And Operation Manual

CDM-710 Broadcast Satellite Modem
Appendix A
A.6.4

Priority System

Priority System = (Highest priority) RMM, RMD, RCR, and RSR (Lowest Priority), as indicated by shading . Any 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
Rx Mode
RMM= 1 byte
Rx Modulation
RMD= 1 byte
Type
Rx FEC Code
RCR= 1 byte
Rate
Description of Arguments
Command or Query.
Rx Mode in the form x, where:
0=DVB-S
1=DVB-S2
2=DVB-DSNG
Example: RMM=0 (DVB-S mode selected)
Note: Refer to Sect. 1.5 Summary of Specifications for available code rates,
modulation types, and symbol rates for each mode.
Command or Query.
Rx Modulation type in the form x, where:
0=QPSK
1=8PSK
2=16QAM
3=16APSK
4=32APSK
Example: RMD=1 (8PSK selected)
Note: Refer to Sect. 1.5 Summary of Specifications for available modulation
types for each mode. If the demodulator is set to DVB-S2 mode, this command
is query-only because the demodulation type is automatically detected, but if the
unit is not locked, the query returns 'x'.
Command or Query.
Rx Code Rate in the form x, where:
0 = Rate 3/4
1 = Rate 7/8
2 = Rate 3/5
3 = Rate 4/5
4 = Rate 5/6
5 = Rate 8/9
6 = Rate 9/10
7 = Rate 2/3
8 = Rate 1/2
Example: RCR=0 (Rate 3/4 selected)
Note: Refer to Sect. 1.5 Summary of Specifications for a list of available code
rates for each mode. If the demodulator is set to DVB-S2 mode, this command
is query-only because the code rate is automatically detected, but if the unit is
not locked, the query returns 'x'.
A–37
MN/CDM710.IOM
Query
Response to (Instruction
Response to Query
Command Code and
Qualifier)
RMM= RMM? RMM=x
RMM?
RMM*
RMM#
RMD= RMD? RMD=x
RMD?
RMD*
RMD#
RCR= RCR? RCR=x
RCR?
RCR*
RCR#
Revision 11