Comtech EF Data SLM-5650A Installation And Operation Manual page 364

SLM-5650A Satellite Modem
Appendix C
Command
Parameter (Instruction
Type Code and
Qualifier)
Tx Scrambler TSC= 1 byte, value of 0
thru 6
Tx Spreading TSE= 1 byte, value of 1
Equation thru 4
Tx Spreading TSF= 3 bytes, value of
Factor 1 thru 128
Tx Spectrum TSI= 1 byte, value of 0
Invert or 1
Live Tx Faults N/A 8 bytes
Arguments for
Command or
Response to
Query
Command or Query.
Tx Scrambler state, where:
0 = Off
1 = OM-73 Scrambler
2 = V.35 Scrambler
3 = Modified V.35 (Comtech EF Data Closed Network)
4 = Reed-Solomon Synchronous Scrambler
5 = IBS Overhead Synchronous Scrambler
6 = TURBO Scrambler
Depending on Modem mode, FEC type, overhead type, and RS state, not all
selections will be valid.
Example: TSC=1 (OM-73 Scrambler On)
Command or Query.
Tx Spreading Equation, where x selects Equation 1 thru 4:
Example: TSE=1 (Tx Equation #1)
Command or Query.
Tx Spreading Factor, where xxx is value from 1 to 128. Values other than 1 are only
valid when Modem Type = LDPC.
Example: TSF=001 (Tx Spreading Off)
Command or Query.
Tx Spectrum Invert selection, where:
0=Normal,
1=Tx Spectrum Inverted
Example: TSI=0 (selects normal)
Query only.
Live Tx Faults are returned as a 32 bit Hexadecimal value. Bit values are defined as
follows:
80000000 = Modulator Symbol Clock not locked
40000000 = Modulator RF Synthesizer not locked
20000000 = Modulator No IQ Activity
10000000 = Modulator Nyquist Filter Clipping
08000000 = Interface data clock PLLs not locked
04000000 = Interface Terrestrial Clock No Activity
02000000 = Interface SCT PLL not locked
01000000 = Interface No Data Activity
Example: TXF=00000000 indicates No Tx Faults
Description of Arguments
C–12
Revision 8
MN-SLM5650A
Query
Response to (Instruction
Response to Query
Command Code and
Qualifier)
TSC= TSC? TSC=x
TSC? (see Description
TSC* of Arguments)
TSC#
TSE= TSE? TSE=x
TSE? (see Description
TSE* of Arguments)
TSE#
TSF= TSF? TSF=xxx
TSF? (see Description
TSF* of Arguments)
TSF#
TSI= TSI? TSI=x
TSI? (see Description
TSI* of Arguments)
TSI#
N/A TXF? TXF=xxxxxxxx
(see Description
of Arguments)