User Guide

NMM-3 Company Confidential
3 - Service Software CCS Technical Documentation
Page 3-20 Copyright  2003 Nokia Corporation Issue 1 (11/2003)
Company Confidential
Limits For Energy Management Calibration
GSM Tuning
General remarks on GSM RF Tuning
• RF tunings must be made in the same order as shown in this document. The order
of the menu items in the Phoenix service software may be different.
• If baseband tunings are needed, they should be made before the RF tunings.
• After tuning is completed the mode must be set manually to dual mode. This
must be done to ensure that the phone is not registering only to WCDMA mode!
• Avoid unnecessary tuning - factory tuning values are always the most accurate
ones.
• Views in this document may change as the service software is developed. Please
refer to the Phoenix help files. phone model specific service manual and bulletins
for help.
Introduction
The following outlines the test method for the alignment of the NMM-3 GSM transceiver
using Phoenix.
Receiver tunings
RX Channel Select Filter Calibration
• Extra equipment / external RF signal not needed
• Must be done before other RX calibrations
• This function is used to calibrate RX channel select filter in GSM Phones.
• Rx Channel select filter is tuned only in one band = Single calibration for both
bands
Measurement Reference Low Limit High Limit
ADC Offset -50 50
Gain 26500 28500
Battery Size Gain 900 1200
Battery Voltage Offset 2400 2600
Gain 10000 11000
Charger Voltage Gain 57500 62500
Charger Current Offset -200 200
Gain 4100 6000
Battery Current Gain 1 255