User Guide

ISSUE 1 09/2004 COMPANY CONFIDENTIAL 45

RM-17

3 - Service Software and Tuning Instructions Nokia Customer Care

■ Semi-automatic calibrations and measurements - step by step: RX/TX and

GSM bands

RX channel select filter calibration

In the following, the calibration of the Rx channel select filter (BB-filter) inside the FR-ASIC is

described. It is performed by internal measuring of a proto-type filter. For this reason, the cali-

bration has to be done only once. No RF signal generator is needed. No GSM band has to be

selected in Phoenix.

Rx channel select filter calibration is always the first tuning in the tuning sequence.

Set the operating mode to local mode.

Select Tuning Alt-U

Rx Channel Select Filter

Calibration Alt-H

The setup should now look like this:

The notch value might not be displayed in later Phoenix versions.

Press Tune and the optimal values are found.

Press Stop, the values are saved to the phone and the calibration has finished.