Comtech EF Data SDM-2020 - Manual (Page 207)

SDM-2020 Satellite Demodulator Revision 4
Remote Control Commands MN/SDM2020D.IOM
A–7
RF Input
Select Command:
Response:
Status:
Response: <add/RFIN_x'cr'
>add/RFIN_x'cr''lf']
<add/RFIN_'cr'
>add/RFIN_x'cr''lf']
Where: X = 1, 2, 3, or 4
Note: The RF inputs are designed as a FAST
option. Input #1 is always available with a 4-
channelRF card installed. Channel 2 is available
with the purchase of the “2 L-Band inputs” option.
Also all 4 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.
The commands RFIN_ and LNBV_ are only
applicable with the installation of a 4-channel RF
DEMOD.
LNB Voltage
Select Command:
Response:
Status:
Response: <add/LNBV_xx'cr'
>add/LNBV_xx'cr''lf']
<add/LNBV_'cr'
>add/LNBV_xx'cr''lf']
Where: xx = 13, 18, or 24
The commands RFIN_ and LNBV_ are only
applicable with the installation of a 4-channel RF
DEMOD.
A.1.7 Bulk Demodulator Configuration
Bulk
Demodulator
Configuration Command:
Response:
Status:
Response: <add/BDC_'p1, p2, p3,…pn’cr'
>add/BDC_p1, p2, p3, … pn'cr''lf']
<add/BDC-‘cr’
<add/BDC_p1,p2,p3, …pn’cr’’lf’]
This command causes demodulator to be
programmed with supplied parameters. All
parameters are separated by a ‘,’ (comma)
except for the last parameter which has the
standard command termination character (‘cr’).
Parameters that do not need to be changed can
be nulled (no data between commas).
Note: This is the only command that may be
issued without first invoking the remote
command (‘<add/REM_’).
The remote command is part of the initialization
of this BDC_command. Status requests to not
require that the remote command be issued at
all.
Where 'pn' is the last parameter returned.
Parameter
Number
Parameter Name
(Command Reference)
Description
1
2
3
4
5
6
Demodulator Rate Assignment
(ref. 'DR_' command).
Demodulator IF Frequency
(ref. 'DF_' command).
Descrambler Enable
(ref. 'DE_' command).
Reed Solomon Decoder Status
(ref. 'RSDE_' command).
Bit Error Rate Threshold
(ref. 'BERT_' command).
EBNO Threshold
(ref. ‘EBNO_’command) p1 = nnnn_mmm.mmmmmm, code rate/data rate
in Mbps.
p2 = nnnn.nnnn, IF frequency in MHz.
p3 = n, where ‘n’ is ‘0’ (Off) or ‘1’ (On).
p4 = n, where ‘n’ is ‘0’ (Corr Off) or ‘1’ (Corr On).
p5 = xxxx, BER threshold, where xxxx is ‘NONE’
or 1E-n (where n = 3 to 8)
p6 = xxxx, EBNO threshold, where xxxx is
‘NONE’ or 3.0 to 16.0 in 0.1 dB steps