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Comtech EF Data SDM-2020 User Manual

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SDM-2020 Satellite Demodulator

Revision 4

Remote Control Commands

MN/SDM2020D.IOM

A–6

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).

E

b

/N

0

Threshold

Command:
Response:

Status:
Response:

>add/EBNT_xxxx'cr''lf']

>add/EBNT_xxxx'cr''lf']

Where: xxxx = NONE, or 3.0 to 16.0 dB in 0.1 Hz
steps.

E

b

/N

0

Threshold
Alarm

Command:
Response:

Status:
Response:

>add/EBNA_xxx'cr''lf']

>add/EBNA_xxx'cr''lf']

Where: xxx = ON or OFF.

Demodulator
Spectrum
Rotation

Command:
Response:

Status:
Response:

>add/DSR_xxxxxxx'cr''lf']

>add/DSR_xxxxxxx'cr''lf']

Where: xxxxxxx = NRM (normal spectrum), INV
(inverted spectrum, or No Data (if carrier is not
locked)).

Demodulator
Type

Command:
Response:

Status:
Response:

>add/DTPE_xxx'cr''lf']

>add/DTPE_xxx'cr''lf']

Where: xxx = DVB or DBS.

LNB Power

Command:
Response:

Status:
Response:

>add/LNB_xxx'cr''lf']

>add/LNB_xxx'cr''lf']

Where: xxx = ON or OFF.

Set LNB
Power Monitor
Low Current
Threshold

Command:
Response:

Status:
Response:

>add/SPL_nnnn'cr''lf']

>add/SPL_nnnn''cr''lf']

Where: nnnn = 0 to 1000 mA in 1 mA steps.

Note: The lower limit specified must be less than
the current upper limit.

Set LNB
Power Monitor
High Current
Threshold

Command:
Response:

Status:
Response:

>add/SPH_nnnn'cr''lf']

>add/SPH_nnnn'cr''lf']

Where: nnnn = 0 to 1000 mA in 1 mA steps.

Note: The upper limit specified must be greater
than the current lower limit.

Reed-
Solomon
Decoder
Enable

Command:
Response:

Status:
Response:

>add/RSDE_xxxx_xxx'cr''lf']

>add/RSDE_xxxx_xxx'cr''lf']

Where: xxxx_xxx = CORR_ON or CORR_OFF

Note: The Reed-Solomon decoder is a standard
feature of the demodulator, and is always on.
The correction, however, can be selected on or
off. CORR_ON is Reed-Solomon error correction
on. CORR_OFF is Reed-Solomon error
correction off.