User Guide

RA-2/3

3 - Service Software Instructions Nokia Customer Care

Issue 1 09/04 COMPANY CONFIDENTIAL 50

■ Rx Calibration

• RF generator is needed.

• This tuning performs Rx calibration.

• Must be done separately on each band.

• Calibration is automatically performed at GSM850/EGSM900 bands, then at the

GSM1800 band and finally at the GSM1900 band. If tuning is successful, it continues

to the next band.

• AFC tuning is done while GSM850 band Rx calibration is performed.

• Remember to take jig and cable attenuations into account!

To start calibrating at the GSM850 band:

1. From the Tuning menu, choose “Rx Calibration”.

2. To start tuning, click Start

3. Set RF generator to required GSM850 frequency => OK.

Tuning values and ADC readings are shown.