Huawei Airbridge BTS3606E Commissioning Manual page 38

3 Commissioning Process
Parameter
Obs chan power
Obs gain adjust
Obs gain Identical
IF gain adjust
RF gain adjust
DDU gain adjust
PD RMS Error
DAC Input Power
RF Forward Power
Example of Test Result
This example shows the full power output of the BTS3606E or BTS3606AE when the CMTR
or OMTR is used to provide three carriers.
TRM2:
Base band power: carrier0 = ***, carrier1 = ***, carrier2 = ***
Digital power : carrier0 = ***, carrier1 = ***, carrier2 = ***
Attenuation : carrier0 = ***, carrier1 = ***, carrier2 = ***
Digital power sum = ***., HPA Output power = ***, HPA Input power = ***
Obs chan power = ***, Obs gain adjust = ***, Obs gain Identical = ***
IF gain adjust = ***, RF gain adjust = ***, DDU gain adjust = ***
PD RMS Error = ***, DAC Input Power = ***, RF Forward Power = ***
Analysis of Test Result
The analysis of the test result is described as follows:
Troubleshooting
Some common troubleshooting methods are as follows:
3-24
Description
Channel power in the feedback
Gain adjustment in the feedback
Channel gain identical adjustment in the feedback
Adjustment of the intermediate frequency gain
Adjustment of the radio frequency gain
Adjustment of the DDU gain
Adjust value of pre-distortion
Power before conversion
The power of the RF signal output port
The normal output power (Digital power) for a carrier is 43 dBm ! 1 dB (that is, 20 W !
1 dB).
If the test result displayed on the power meter is out of normal range, compare it with the
result of interface tracing.
If the test result displayed on the power meter is out of normal range, start interface
tracing to check the values of the parameters Base band power, Digital power, and
HPA Output power.
In theory, if the value of the parameter Base band power is not normal, the values of
Digital power and HPA Output power are also not normal. In such a case, check if the
BTS gain is set correctly. If BTS gain is correct, analyze the CCPM performance and
CECM performance by querying BTS configuration and checking the
CSM5000/CSM5500/CSM6800.
Huawei Technologies Proprietary
Airbridge BTS3606E&3606AE
System Commissioning Guide
Issue 02 (2006-10-10)