User's Manual

Used gain
Actual momentary gain for the uplink and downlink transmission. This
field shows clearly the automatic gain control at high downlink signal
strength.
The momentary gain is controlled by the AGC (Automatic Gain Control).
When the antenna isolation is good and the downlink signal strength is
normal, the values coincide with the Gain set to value, but if instability
due to poor antenna isolation is detected it decreases to a level 13dB
below the lowest instability level. Warning alarm is activated when
instability is detected and Ceasing when the instability has ceased.
The decreased gain level is kept for the next 60 minutes, whereupon it
increases back to the Gain set to level.
If instability due to poor antenna isolation is detected at the lowest
output gain, the PA board is switched off and PA OFF is indicated in the
status window. Error alarm is activated when instability is detected and
Ceasing when the instability has ceased.
Use the antenna isolation test to reveal isolation problems. See the text
in the box on page 10-17.
AGC
Shows the text ON or OFF to indicate if the AGC (automatic gain
control) for uplink and downlink signaling is on or off.
AGC is switched on/off by entering the BSA-AGC ON command or the
BSA-AGC OFF command in the Command Line Interface. See the
command list in the Command Line Interface section in Chapter 9.
PA
Shows the text ON or OFF to indicate if the PA power amplifier board for
uplink and downlink signaling is on or off.
PA is switched on/off by entering the BSA-PAON ON command or the
BSA-PAON OFF command in the Command Line Interface. See the
command list in the Command Line Interface section in Chapter 9.
ALLGON System AB AR Repeaters & OMT32 Software – Repeater Operations
User’s Manual VD202 90/EN Rev. 1A 1999-07 10 - 24