User Guide

Temperature sensor calibration is done in room temperature, in which offset caused by the ASIC variation

and AD-converter are nullified.

The module is able to do this calibration by itself, no external equipment is needed.

The temperature of the module and components must be 23 +/-2 degrees.

Steps

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

2. Choose Tuning→Temperature Sensor Calibration .

3. Click Tune.

Table 6 Temperature sensor calibration tuning limits

Min Typ Max Unit

-20 -4 20 V

4. To save the calibration values, click Write.

5. To finish the calibration, 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. Choose File→Scan Product.

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

5. Choose Tuning→GSM→Rx Calibration.

RM-49

RF Troubleshooting and Manual Tuning Guide Nokia Customer Care

Issue 1 COMPANY CONFIDENTIAL Page 7 –19