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. Select Mode: Automatic.
5. Select Band: GSM900 and click Start.
6. Click Next to start GSM1800 band TX IQ tuning.
7. Click Next to start GSM1900 band 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-164
RF Troubleshooting and Manual Tuning Guide
Page 4 –28
COMPANY CONFIDENTIAL
Issue 1
Copyright © 2007 Nokia. All rights reserved.
Содержание RM-164
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