Comtech EF Data SNM-1001L - Manual (Page 282)

SNM-1001L Satellite Modem Revision 1
Remote Control Operation MN/SNM1001L.IOM
B–8
Demodulator
Rate Variable
Assignment
& Selection Command:
Response:
Status:
>add/SDRV_nnnn_mmmm.mmm'cr''lf']
See DR command.
Where:
nnnn = 1/2 (QPSK 1/2 Turbo and non-Turbo),
[coder rate], 3/4 (QPSK 3/4 Turbo and non-
Turbo), 7/8 (QPSK 7/8), BP12 (BPSK ½), 8P23
(8PSK 2/3), OQ12 (OQPSK 1/2 Turbo and non-
Turbo), OQ34 (OQPSK 3/4 Turbo and non-Turbo),
OQ78 (OQPSK 7/8), BPSK (BPSK1/1 Turbo and
non-Turbo), QPSK (QPSK 1/1 Turbo and non-
Turbo), OQSK (OQPSK 1/1 Turbo, and non-
Turbo), 2144 (BPSK 21/44 Turbo Only), B516
(BPSK 5/16 Turbo Only), and 8P34 (8PSK 3/4
Turbo Only).
mmmm.mmm = Data rate in kHz
Burst Mode = nnnn= 1/2
mmmm.nnn = 19.2 or 57.6 kbps
Descramble
Enable Command:
Response:
Status:
Response: >add/DE_xxx'cr''lf']
>add/DE_xxx'cr''lf'] Where: xxx = ON or OFF.
Differential
Decoder
Enable Command:
Response:
Status:
Response: >add/DDEC_xxx'cr''lf']
>add/DDEC_xxx'cr''lf']
Where: xxx = ON or OFF.
IF Loopback
TX L-Band
modem Command:
Response:
Status:
Response: >add/IFL_xxx'cr''lf']
>add/IFL_xxx'cr''lf'] Where: xxx = ON or OFF.
Sweep
Center
Frequency Command:
Response:
Status:
Response: >add/SCF_snnnnn'cr''lf']
>add/SCF_snnnnn'cr''lf'] Where: snnnnn = -75000 to +75000, in 1 Hz steps.
Sweep Width
Range Command:
Response:
Status:
Response: >add/SWR_nnnnnn'cr''lf']
>add/SWR_nnnnnn'cr''lf'] Where: nnnnnn = 0 to 150000, in 1 Hz steps.
Sweep
Reacquisi-
tion Command:
Response:
Status:
Response: >add/SR_xxx'cr''lf']
>add/SR_xxx'cr''lf'] Where: xxx = 0 to 999 (number of seconds).
Bit Error Rate
Threshold Command:
Response:
Status:
Response: >add/BERT_xxxx'cr''lf']
>add/BERT_xxxx'cr''lf']
Where: xxxx = NONE, or 1E-n, where n = 3, 4, 5, 6, 7,
or 8 (exponent of threshold).
Demodulator
Type Command:
Response:
Status:
Response: >add/DT_xxxx'cr''lf']
>add/DT_xxxx'cr''lf'] Where: xxxx = INTL (INTELSAT OPEN NETWORK),
EFD (EF DATA CLOSED NETWORK), CSC
(COMSTREAM CLOSED NETWORK), FDC
(FAIRCHILD CLOSED NETWORK).
Demodulator
Decoder
Type Command:
Response:
Status:
Response: >add/DDT_xxx'cr''lf']
>add/DDT_xxx'cr''lf'] Where: xxx = VIT (K-7 VITERBI ENCODER), SEQ
(SEQUENTIAL ENCODER) or TUR (TURBO).
Demodulator
Spectrum
Rotation Command:
Response:
Status:
Response: >add/DSR_xxx'cr''lf']
>add/DSR_xxx'cr''lf'] Where: xxx = NRM (normal spectrum), INV (inverted
spectrum).
Reed-
Solomon
Decoder
Enable Command:
Response:
Status:
Response: >add/RSDE_xxx'cr'lf']
>add/RSDE_xxx'cr'lf'] Where: xxx = ON, OFF, or CORR_OFF.
Receive
BPSK Data
Ordering Command:
Response:
Status:
Response: >add/RDA_xxx'cr''lf']
>add/RDA_xxx'cr''lf'] Where: xxx = NRM (STANDARD), INV (NON-
STANDARD).