User Guide

Results

Rx band filter response compensation (GSM)

Prerequisites

Rx Calibration must be performed before the Rx Band Filter Response Compensation.

Context

On each GSM Rx band, there is a band rejecting filter in front of the HINKU 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 module jig’s GSM connector to the signal generator.

2. From the "Operating mode" dropdown menu, set mode to "Local".

3. Select GSM900 band (or GSM850 on RM-24).

4. From the Tuning menu, choose GSM -> Rx Band Filter Response Compensation.

5. In the

Tuning mode

pane, select Manual.

RM-10;RM-24

Nokia Customer Care RF Troubleshooting and Manual Tuning Guide

Page 7 –28 COMPANY CONFIDENTIAL Issue 1