User Guide

Context

On each GSM Rx band, there is a band rejecting filter in front of an RF ASIC front end. The amplitude ripple

caused by these filters causes ripple to the RSSI measurement and therefore calibration is needed.

The calibration has to be repeated for each GSM band.

Steps

1. Connect the GSM connector of the module jig to a signal generator.

2. Start

Phoenix

service software.

3. Choose File Scan Product.

4. From the Operating mode drop-down menu, set mode to Local.

5. Select GSM900 band.

6. Choose Tuning→GSM→Rx Band Filter Response Compensation.

7. From the

Tuning mode

drop-down menu, select Manual.

8. Click Start.

RM-49

Nokia Customer Care RF Troubleshooting and Manual Tuning Guide

Page 7 –22 COMPANY CONFIDENTIAL Issue 1