PA (power amplifier) detection
Context
The PA detection procedure detects which PA manufacturer is used for phone PAs.
If a PA is changed or if the permanent memory (PMM) data is corrupted, PA detection has to be performed
before Tx tunings.
Steps
1. From the
Operating mode
drop-down menu, set mode to
Local
.
2. Choose
Tuning
→
PA Detection
.
3. Click
Tune
.
4. Check that the detected PA manufacturers are corresponding to the actual chips on the board.
5. To end the procedure, click
Close
.
GSM receiver tunings
Rx calibration (GSM)
Context
Rx Calibration is used to find out the real gain values of the GSM Rx AGC system and tuning response of the
AFC system (AFC D/A init value and AFC slope)
Steps
1.
Connect the GSM connector of the module jig to a signal generator.
2.
Start
Phoenix
service software.
3.
From the
Operating mode
drop-down menu, set mode to
Local
.
4.
Choose
Tuning
→
GSM
→
Rx Calibration
.
5.
Check the
Load from Phone
check box, and uncheck
Save to Phone
.
6.
From the
Band
drop-down menu, choose e.g.
GSM900
.
RM-88
RF Troubleshooting and Manual Tuning Guide
Nokia Customer Care
Issue 1
COMPANY CONFIDENTIAL
Page 7 –21
Copyright © 2006 Nokia. All rights reserved.