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CiM-550 IP Enabled Satellite Modem
Theory of Operation
6.4.1.1 T
E
ARGET
This is value of Eb/No that the user desires to keep constant at the remote modem.
If the Eb/No exceeds this value, the AUPC control will reduce the TX output power, but
will never drop below the nominal value set.
If the Eb/No falls below this value, the AUPC control will increase the TX output power,
but will 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
6.4.1.2 M
R
AX
ANGE
This defines how much the modem is permitted to increase the output level, under AUPC
control.
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
6.4.1.3 A
LARM
This parameter defines how the user wants the modem to act if, under AUPC control, the
maximum power limit is reached.
The two choices are:
NONE (no action)
TX ALARM (generate a TX alarm)
The default setting is NONE.
6.4.1.4 D
U
EMOD
This 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)
MAXIMUM (increase the TX Output Power to the maximum value permitted by the
parameter MAX RANGE)
The default setting is NOMINAL.
Note: If the local demod loses lock, the modem will automatically move its output power to the
nominal value.)
/N
B
O
NLOCK
89
Rev. 2
CD/CIM550.IOM
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