Nokia RM-132 Service Manual & Parts Manual page 259

RM-132; RM-133
RF Troubleshooting and Manual Tuning Guide
For EDGE transmission the bias settings of the GSM PA are adjusted in order to improve linearity. This affects
the PA gain and hence the power levels have to be aligned separately for EDGE transmission.
Tx power level tuning has to be performed on all GSM bands.
Steps
1. Connect the phone to a power meter with peak power detector or Agilent VSA Transmitter Tester.
2. Start Phoenix service software.
3. From the "Operating mode" dropdown menu, set mode to "Local".
4. From the Tuning menu, choose GSM -> Tx Power Level Tuning.
5. If you are using an Agilent VSA use the settings in the table below.
GSM850 Frequency (MHz)
GSM900 Frequency (MHz)
GSM1800 Frequency (MHz)
GSM1900 Frequency (MHz)
Resolution Bandwidth (MHz)
Video Bandwidth (MHz)
Trigger
Sweeptime (ms)
Span
Average (for non-EDGE)
Average (for EDGE)
Issue 1
Agilent VSA Transmitter Tester specific settings
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