Comtech EF Data SDM-2020, Installation And Operation Manual

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Remote Control Operation SDM-2020 Satellite Demodulator
B–14 Rev. 3
Non-G.703
Interface Command:
Response: <add/IRES_'cr'
>add/IRES_xxxxxxxxxxx’cr’’If’] Where: xxxxxxxxxxx = Not Enabled (refer to Interface
Configuration Command, Interface Read Error Select.),
Locked (RX locked to transmitter), No Data (RX unlocked
to transmitter).
Eb/N0
Status Command:
Response: <add/EBN0_'cr'
>add/EBN0_xnn.ndB'cr''lf'] Where:
x = < or > (data modifier to indicate that the Eb/N0 is
less than or greater than the returned value).
nn.n = 1.0 to 99.9 (Eb/N0 value).
Notes:
1. The 'x' (< or >) parameter is only returned if the
E
b
/N
0
has exceeded the computational resolution
of the system.
2. 'No Data' is returned if the E
b
/N
0
cannot be
calculated.
3. 'Sampling' is returned if not enough data is
currently available to calculate the E
b
/N
0
.
Eb/N0
Margin
Status Command:
Response: <add/EBNM_'cr'
>add/EBNM_xnn.ndB'cr''lf'] Where:
x = < - > (data modifier to indicate that the Eb/N0
threshold is less than 0 ).
nn.n = -16.0 to +16.0 (EB/NO threshold)
Notes:
1. “NO DATA” is returned if the E
b
/N
0
has cannot be
calculated or if the EB/NO has the computational
resolution of the system.
2. 'Sampling' is returned if not enough data is
currently available to calculate the E
b
/N
0
.
Receive
Signal Level
Status Command:
Response: <add/RSL_'cr'
>add/RSL_xsnn.ndBm'cr''lf'] Where:
x = < or > (data modifier to indicate that the receive
signal level is less than or greater than the returned
value).
s = + or - (receive signal level sign, ±).
nn.n = 0.0 to 99.9 (receive signal level magnitude).
Notes:
1. The 'x' (< or >) parameter is only returned if the
level has exceeded the computational resolution
of the system.
2. 'No Data' is returned if the level cannot be
calculated.
3. 'Sampling' is returned if not enough data is
currently available to calculate the level.