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Command
Arguments for
Parameter
(Instruction
Command or
Code and
Response to
Type
Qualifier)
Live Tx Faults
N/A
8 bytes
Tx Carrier State
TXO=
1 byte
Appendix C
Description of Arguments
Query
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
00800000 = APC Home State
00400000 = APC Margin
Example: TXF = 00000000 indicates No Tx Faults
Command or Query.
Tx Carrier State, where:
0 = OFF due to front panel or remote control command
1 = ON
2 = RTS
3 = OFF due to ext H/W Tx Carrier Off command (not a valid
argument when used as a command)
Example: TXO = 1 (Tx Carrier ON)
C–20
SLM-5650B Satellite Modem
Query
Response to
Response to
(Instruction
Command
Query
Code and
Qualifier)
N/A
TXF?
TXF=xxxxxxxx (see
Description of
Arguments)
TXO=
TXO?
TXO=x
TXO?
(see Description of
Arguments)
TXO*
TXO#
MN-SLM-5650B
Revision 2
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