Comtech EF Data SLM-5650A Installation And Operation Manual page 371

SLM-5650A Satellite Modem
Appendix C
Command
Parameter (Instruction
Type Code and
Qualifier)
Rx RRD= 1 byte, value of 0
Reed-Solomon to 2
Interleaver
Depth
Rx Reed- RRS= 1 byte, value of 0
Solomon or 1
Decoding
Rx Spreading RSE= 1 byte, value of 1
Equation thru 4
Rx Spreading RSF= 3 bytes, value of
Factor 1 thru 128
Rx Spectrum RSI= 1 byte, value of 0
Invert or 1
Rx Signal Level N/A 5 bytes
Arguments for
Command or
Response to
Query
Command or Query.
Rx RS encoding, where:
0 = Interleaver Depth 4
1 = Interleaver Depth 8
2 = Interleaver Depth 16
Depending on Modem mode, overhead type, and data rate, not all selections will be
valid.
Example: RRD=0 (This is a 'don't care' if RS is Off under RRS)
Command or Query.
Rx RS encoding, where:
0=Off
1=On
Depending on Modem mode, not all selections will be valid.
Example: RRS=0 (RS encoding is Off)
Command or Query.
Rx Spreading Equation, where x selects Equation 1 thru 4:
Example: RSE=1 (Rx Equation #1)
Command or Query.
Rx Spreading Factor, where xxx is value from 1 to 128. Values other than 1 are only
valid when Modem Type = LDPC.
Example: RSF=001 (Rx Spreading Off)
Command or Query.
Rx Spectrum Invert, where:
0=Normal
1=Rx Spectrum Invert
Example: RSI=0 (selects Normal)
Query only.
Unit returns the value of the Rx signal level in the form sxx.x, where:
s = + (positive) or – (negative) sign
xx.x – Rx signal level value in dBm, between +15.0 and –60.0 dBm
Examples:
RSL = +99.9 (RSL > +15.0 dBm)
RSL = +15.0
RSL = -60.0
RSL = -99.9 (RSL < -60.0 dBm)
Description of Arguments
C–19
Revision 8
MN-SLM5650A
Query
Response to (Instruction
Response to Query
Command Code and
Qualifier)
RRD = RRD? RRD =x
RRD? (see Description
RRD * of Arguments)
RRD #
RRS= RRS? RRS=x
RRS? (see Description
RRS* of Arguments)
RRS#
RSE= RSE? RSE=x
RSE? (See Description
RSE* of Arguments)
RSE#
RSF= RSF? RSF=xxx
RSF? (See Description
RSF* of Arguments)
RSF#
RSI= RSI? RSI=x
RSI? (see Description
RSI* of Arguments)
RSI#
N/A RSL? RSL=sxx.x
(see Description
of Arguments)