User Guide

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. Click Start.

6. Connect the signal generator to the phone, and set frequency and amplitude as instructed in the

Rx Calibration with band EGSM900 (step 1-3) pop-up window.

Important: The calibration uses a non-modulated CW signal. Increase the signal generator level by

cable attenuation and module jig probe attenuation.

RM-437; RM-449; RM-450

RF troubleshooting

Page 4 –18 COMPANY CONFIDENTIAL Issue 1