Aupc Target E; 8.2.2 Aupc Max Range; Aupc Target E B /N; 8.2.3 Aupc Alarm - Comtech EF Data CDM-Qx Installation And Operation Manual

CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier®
Automatic Uplink Power Control (AUPC)
4. The user will then select AUPC as the operating mode.
At this point the user will be prompted to define four key parameters: AUPC Target E
AUPC Max Range; AUPC Alarm; and Demod Unlock.

8.2.1 AUPC Target E

TARGET E /N
b
If the E /N exceeds this value, the AUPC control will reduce the Tx output power, but will never
b 0
drop below the nominal value set.
If the E /N falls below this value, the AUPC control will increase the Tx output power, but will
b 0
never exceed the value determined by the parameter MAX RANGE.
•
The minimum value the user can enter is 0.0 dB
•
The maximum value the user can enter is 9.9 dB
•
The default value is 3.0 dB
•
The resolution is 0.1 dB

8.2.2 AUPC Max Range

MAX RANGE defines how much – under AUPC control – the modem is permitted to increase
the output level.
•
The minimum value the user can enter is 0 dB
•
The maximum value the user can enter is 9 dB
•
The default value is 1 dB
•
The resolution is 1 dB

8.2.3 AUPC Alarm

The ALARM parameter defines how – under AUPC control – the user wants the modem to
react if the maximum power limit is reached.
The two choices are:
•
NONE (no action – this is the default setting).
•
TX ALARM (generate a Tx alarm).

8.2.4 Demod Unlock

DEMOD UNLOCK defines the action the modem will take if the remote demodulator loses lock.
The two choices are:
•
NOMINAL (reduce the Tx Output Power to the nominal value – this is the default
setting).
/N
b 0
is value of E /N that the user desires to keep constant at the remote modem.
0 b 0
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MN/CDMQX.IOM
/N ;
b 0