Comtech EF Data SDM-2020, Installation And Operation Manual

Page: 181 / 215

Remote Control Operation SDM-2020 Satellite Demodulator
B–6 Rev. 3
Bit Error
Rate
Threshold Command:
Response:
Status:
Response:
<add/BERT_xxxx'cr'
>add/BERT_xxxx'cr''lf']
<add/BERT_'cr'
>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'
>add/EBNT_xxxx'cr''lf']
<add/EBNT_'cr'
>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'
>add/EBNA_xxx'cr''lf']
<add/EBNA_'cr'
>add/EBNA_xxx'cr''lf']
Where: xxx = ON or OFF.
Demodulator
Spectrum
Rotation Command:
Response:
Status:
Response:
<add/DSR_xxxxxxx'cr'
>add/DSR_xxxxxxx'cr''lf']
<add/DSR_'cr'
>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'
>add/DTPE_xxx'cr''lf']
<add/DTPE_'cr'
>add/DTPE_xxx'cr''lf']
Where: xxx = DVB or DBS.
LNB Power Command:
Response:
Status:
Response:
<add/LNB_xxx'cr'
>add/LNB_xxx'cr''lf']
<add/LNB_'cr'
>add/LNB_xxx'cr''lf']
Where: xxx = ON or OFF.
Note: This command applies to L-Band RF modems.
Set LNB
Power
Monitor Low
Current
Threshold Command:
Response:
Status:
Response:
<add/SPL_nnnn'cr'
>add/SPL_nnnn'cr''lf']
<add/SPL_'cr'
>add/SPL_nnnn''cr''lf']
Where: nnnn = 0 to 1000 mA in 1 mA steps.
Notes:
1. The lower limit specified must be less than the
current upper limit.
2. This command applies to L-Band RF modems.
Set LNB
Power
Monitor High
Current
Threshold Command:
Response:
Status:
Response:
<add/SPH_nnnn'cr'
>add/SPH_nnnn'cr''lf']
<add/SPH_'cr'
>add/SPH_nnnn'cr''lf']
Where: nnnn = 0 to 1000 mA in 1 mA steps.
Notes:
1. The lower limit specified must be less than the
current upper limit.
2. This command applies to L-Band RF modems.
Reed-
Solomon
Decoder
Enable Command:
Response:
Status:
Response:
<add/RSDE_xxxx_xxx'cr'
>add/RSDE_xxxx_xxx'cr''lf']
<add/RSDE_'cr'
>add/RSDE_xxxx_xxx'cr''lf']
Where: xxxx_xxx = CORR_ON or CORR_OFF
Note: The Reed-Solomon decoder is always on. The
correction, can be selected on or off.
RF Input
Select Command:
Response:
Status:
Response:
<add/RFIN_x'cr'
>add/RFIN_x'cr''lf']
<add/RFIN_'cr'
>add/RFIN_x'cr''lf']
The commands RFIN_ is only applicable with the
installation of a 4-channel RF DEMOD.
X = 1, 2, 3, or 4
Note: The RF inputs are designed as a FAST option.
Input #1 is always available with a 4-channel RF card
installed. Channel #2 is available with the purchase of
the “2 L-Band Inputs” option. Also all four inputs are
available with the activation of the “4 L-Band Inputs”
option. If a single input card is currently installed, only
that one input is available and an upgrade is available
only at the factory.