Dear AA
I’ve some idea,
In ur bts u can see that there are 3 CDu’s, each belongs to respective sectors. Say you want to measure the power for sector one- In cdu u can see there are 2 ports one is Tx/Rx and other one is Rx port. So you have to fix the Tx/Rx port to the Power Meter IN port and OUT port should be connected to the respective antenna feeder (i.e here sector 1), then you can measure the TRX output power….