User Guide

Tx IQ tuning must be performed for all GSM bands.
Steps
1. Start Phoenix service software.
2. From the Operating mode drop-down menu, set mode to Local.
3. Choose Tuning→GSM→Tx IQ Tuning .
4. PressStart.
5. Tap the optionTune all.
6. Press Tune.
7. Click Close to finish the TX IQ tuning.
8. ClickFinish and then Close.
Next actions
Tuning sliders should be close to the center of the scale after the tuning and within the limits specified in
the following table. If they are not within the limits, check Tx IQ quality manually.
Min Typ Max Unit
GSM850
I DC offset / Q DC
offset
-6 -4 6 %
Ampl -1 0 1 dB
Phase 85 90 95
°
GSM900
RM-437; RM-449; RM-450
RF troubleshooting
Page 4 –24 COMPANY CONFIDENTIAL Issue 1
Copyright © 2008 Nokia. All rights reserved.