User's Manual

4. Setting Up for Initial Operation
EAC-2100 Manual: (Draft, 02/01) Page 4-26
4.6.2 Setting Reverse Path Output Power (If Necessary)
The output power in the reverse direction (from booster to donor cell) is +20
dBm per channel. It is set at a much lower level than in the forward direction to
prevent reuse interference with other cells that may be in the system. If the
minimum received signal requirements are met for the forward direction, then
by reciprocity +20 dBm per channel in the reverse direction is sufficient.
F NOTE: Adjustment of the reverse power level is seldom needed.
However, in certain installations the output level may need to be
reduced.
The +20 dBm output level can be reduced with the following procedure:
1. From the SET Main Menu, type B <CR> to display the Power Amplifiers
Menu.
2. Use selections I and J , the reverse PA power for DTC and DCCH
channels.
3. Enter the desired level from +5 to +20 dBm.
Another way to remedy this situation is to install pads in increments of 10 dB
between the donor antenna and the donor duplexer ANT connector. This
method has the added advantage of increasing effective antenna isolation.
4.6.3 Setting PA Power Low Alarm Points
Note that the Power Amplifiers Menu also includes the low power alarm
points. The default values are appropriate for PAs set to the factory power
levels.
If the power outs have been adjusted lower than this, reduce the alarm points
as well. Normally, the alarm point should be set 5 dB lower than the power
reported on the terminal while keyed.