Huawei Airbridge BTS3606AE, Руководство по вводу в эксплуатацию

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3 Commissioning Process
Airbridge BTS3606E&3606AE
System Commissioning Guide
3-24 Huawei Technologies Proprietary Issue 02 (2006-10-10)
Parameter Description
Obs chan power Channel power in the feedback
Obs gain adjust Gain adjustment in the feedback
Obs gain Identical Channel gain identical adjustment in the feedback
IF gain adjust Adjustment of the intermediate frequency gain
RF gain adjust Adjustment of the radio frequency gain
DDU gain adjust Adjustment of the DDU gain
PD RMS Error Adjust value of pre-distortion
DAC Input Power Power before conversion
RF Forward Power The power of the RF signal output port
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:
z
The normal output power (Digital power) for a carrier is 43 dBm
!
1 dB (that is, 20 W
!
1 dB).
z
If the test result displayed on the power meter is out of normal range, compare it with the
result of interface tracing.
Troubleshooting
Some common troubleshooting methods are as follows:
z
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
.
z
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.