Comtech EF Data SLM-5650A - Manual (Page 371)

SLM-5650A Satellite Modem Revision 8
Appendix C MN-SLM5650A
C–19
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
Reed-Solomon
Interleaver
Depth
RRD= 1 byte, value of 0
to 2
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)
RRD =
RRD?
RRD *
RRD #
RRD? RRD =x
(see Description
of Arguments)
Rx Reed-
Solomon
Decoding
RRS= 1 byte, value of 0
or 1
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)
RRS=
RRS?
RRS*
RRS#
RRS? RRS=x
(see Description
of Arguments)
Rx Spreading
Equation
RSE= 1 byte, value of 1
thru 4
Command or Query.
Rx Spreading Equation, where x selects Equation 1 thru 4:
Example: RSE=1 (Rx Equation #1)
RSE=
RSE?
RSE*
RSE#
RSE? RSE=x
(See Description
of Arguments)
Rx Spreading
Factor
RSF= 3 bytes, value of
1 thru 128
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)
RSF=
RSF?
RSF*
RSF#
RSF? RSF=xxx
(See Description
of Arguments)
Rx Spectrum
Invert
RSI= 1 byte, value of 0
or 1
Command or Query.
Rx Spectrum Invert, where:
0=Normal
1=Rx Spectrum Invert
Example: RSI=0 (selects Normal)
RSI=
RSI?
RSI*
RSI#
RSI? RSI=x
(see Description
of Arguments)
Rx Signal Level N/A 5 bytes 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)
N/A RSL? RSL=sxx.x
(see Description
of Arguments)