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CDM-710 Broadcast Satellite Modem Revision 11
Appendix A MN/CDM710.IOM
A–37
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.
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 Mode
RMM= 1 byte 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.
RMM=
RMM?
RMM*
RMM#
RMM? RMM=x
Rx Modulation
Type
RMD= 1 byte 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’.
RMD=
RMD?
RMD*
RMD#
RMD? RMD=x
Rx FEC Code
Rate
RCR= 1 byte 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’.
RCR=
RCR?
RCR*
RCR#
RCR? RCR=x
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