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 GSM850 or 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-272; RM-273
RF Troubleshooting and Manual Tuning Guide
Issue 1
COMPANY CONFIDENTIAL
Page 4 –31
Copyright © 2007 Nokia. All rights reserved.
Содержание 3500 classic RM-272
Страница 127: ...5 System module Nokia Customer Care Issue 1 COMPANY CONFIDENTIAL Page 5 1 Copyright 2007 Nokia All rights reserved ...
Страница 132: ...PWB overview RM 272 RM 273 System module Page 5 6 COMPANY CONFIDENTIAL Issue 1 Copyright 2007 Nokia All rights reserved ...
Страница 147: ...Glossary Nokia Customer Care Issue 1 COMPANY CONFIDENTIAL Page Glossary 1 Copyright 2007 Nokia All rights reserved ...