Comtech EF Data SLM-5650A - Manual (Page 364)

SLM-5650A Satellite Modem Revision 8
Appendix C MN-SLM5650A
C–12
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
Tx Scrambler TSC= 1 byte, value of 0
thru 6
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)
TSC=
TSC?
TSC*
TSC#
TSC? TSC=x
(see Description
of Arguments)
Tx Spreading
Equation
TSE= 1 byte, value of 1
thru 4
Command or Query.
Tx Spreading Equation, where x selects Equation 1 thru 4:
Example: TSE=1 (Tx Equation #1) TSE=
TSE?
TSE*
TSE#
TSE? TSE=x
(see Description
of Arguments)
Tx Spreading
Factor
TSF= 3 bytes, value of
1 thru 128
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)
TSF=
TSF?
TSF*
TSF#
TSF? TSF=xxx
(see Description
of Arguments)
Tx Spectrum
Invert
TSI= 1 byte, value of 0
or 1
Command or Query.
Tx Spectrum Invert selection, where:
0=Normal,
1=Tx Spectrum Inverted
Example: TSI=0 (selects normal)
TSI=
TSI?
TSI*
TSI#
TSI? TSI=x
(see Description
of Arguments)
Live Tx Faults N/A 8 bytes 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
N/A TXF? TXF=xxxxxxxx
(see Description
of Arguments)