User's Manual

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9.3.2. Manual Gain Control (MGC)
DIP Switch can be used to adjust the booster gain when Alarm LED is orange or even RED. The principle is
that booster alarm LED must be green color.
Switches 1.2 represent Downlink and 3.4 represent
Uplink. When it is necessary to adjust the gain by DIP
switch, firstly please adjust Downlink gain according to
input signals, secondly please adjust Uplink gain
according to Downlink gain.
The DIP Switches have default ‘OFF’ status; please push
relevant switches to “ON” position if certain attenuation
value needs to be achieved.
 DIP switch downlink attenuation setting:
Att 1 2
0 dB off off
5 dB ON off
10 dB off ON
15dB ON ON

DIP switch uplink attenuation setting:
Att 3 4
0 dB off off
5 dB ON off
10 dB off ON
15dB ON ON
9.3.3. Booster Commissioning
z Downlink gain setting
First the alarm LED only indicates the downlink input power level, here we use color of Alarm LED
to adjust the gain of the repeater. Alarm LED color must remain green. As for the downlink working
performance, it is a good working point that Alarm LED maintains “Green” color with the intention of turning
orange; here we refer as “edge point”. At this time, downlink output power and coverage effect are stable.
And the equipment must be as far as possible away from overloading status of “red” (the equipment would
hold higher interference and depression ability at this stage). So we shall try our best to set the equipment
near “edge point” of green and intention of turning orange during engineering.
z Setting of “edge point”:
Switch on the power supply after connection with donor antenna and server antenna, and observe