Maintenances and Managements
29
Tx/Rx
Channel 1
Tx/Rx
Channel 2
Outdoor Booster
BTS0
BTS1
ANT0
ANT1
Booster input power
Pin=43dBm
Booster output power
Pout=51dBm
PA Gain Setting
Gdown=8dB
TMA Gain Setting
Gup=8~12dB
P1=43dBm
P2=43dBm
BTS
Combiner
Tx/Rx
Channel 3
P2=43dBm
Loss=3dB
Loss=3dB
4 channels combination: PA gain setting G
down
=8dB
If 2 channels connect to booster as the following figure, the output power of BTS won’t be
changed when the BTS is upgraded to 3 or 4 channels. And there’s no need to reset the PA gain
of the booster.
Tx/Rx
Channel 1
Tx/Rx
Channel 2
Outdoor Booster
BTS0
BTS1
ANT0
ANT1
Booster input power
Pin=43dBm
Booster output power
Pout=51dBm
PA Gain setting
Gdown=8dB
TMA Gain Setting
Gup=8~12dB
P1=43dBm
P2=43dBm
BTS
Loss=3dB
Loss=3dB
Usually, the combination loss of 2 channels is 3dB, and there are there’re differences between
various types of BTS. For example:
2. 1~6 channels combination of Ericsson or Nokia BTS
