Comtech EF Data SDM-2020 - Manual (Page 205)

SDM-2020 Satellite Demodulator Revision 4
Remote Control Commands MN/SDM2020D.IOM
A–5
A.1.6 Configuration Commands/Responses
A.1.6.1 Demodulator Configuration Commands
Demodulator
Frequency Command:
Response:
Status:
Response: >add/DF_nnnn.nnnn'cr''lf']
>add/DF_nnnn.nnnn'cr''lf']
Where: nnnn.nnnn = Frequency in MHz,
950.0000 to 2150.0000 in 2.5 kHz steps.
Demodulator
Rate
Assignment Command:
Response:
Status:
Response: >add/ADRV_nnnnn_mmm.mmmmmm'cr''lf']
>add/ADRV_nnnnn_mmm.mmmmmm'cr''lf'] Where:
nnnnn = 1/2 (QPSK 1/2) [Decoder rate], 3/4
(QPSK 3/4), 7/8 (QPSK 7/8), 5/6 (QPSK 5/6),
2/3 (QPSK 2/3), 8P23 (8PSK 2/3), 8P56
(8PSK 5/6), 8P89 (8PSK 8/9), 16QAM34
(16QAM3/4), 16QAM78 (16QAM7/8).
mmm.mmmmmm = Data rate in MHz.
Note: When using a SMPTE 310M interface, the
data rate is fixed at 19.392658 MHz. While the
code rate can be changed as applicable, an
invalid parameter message will be generated if
any other data rate is input for change.
Symbol Rate
Assignment Command:
Response:
Status:
Response: >add/ASR_nnnnn_mm.mmmmmm'cr''lf']
>add/ASR_nnnnn_mm.mmmmmm'cr''lf']
Where
nnnnn = 1/2 (QPSK 1/2) [Decoder rate], 3/4
(QPSK 3/4), 7/8 (QPSK 7/8), 5/6 (QPSK 5/6),
2/3 (QPSK 2/3), 8P23 (8PSK 2/3), 8P56
(8PSK 5/6), 8P89 (8PSK 8/9), 16QAM3/4,
16QAM7/8.
mm.mmmmmm = Symbol rate in MHz.
Note: When using a SMPTE 310M interface, the
data rate is fixed at 19.392658 MHz. While the
code rate can be changed as applicable, an
invalid parameter message will be generated if
any other data rate is input for change.
Descrambler
Enable
Command:
Response:
Status:
Response: >add/DE_xxx'cr''lf']
>add/DE_xxx'cr''lf'] Where: xxx = ON or OFF.
Sweep Width
Range Command:
Response:
Status:
Response: >add/SWR_nnnnnnn'cr''lf']
>add/SWR_nnnnnnn'cr''lf']
Where: nnnnnnn= 0 to 1000000 in 1 Hz steps.
Sweep
Reacquisition Command:
Response:
Status:
Response: >add/SR_xxx'cr''lf']
>add/SR_xxx'cr''lf']
Where: xxx = 0 to 999 (number of seconds).