User Guide

Issue 1 01/2005 COMPANY CONFIDENTIAL 53

RM-30

3 - Service Software and Tuning Instructions Nokia Customer Care

It is strongly recommended to use the Phoenix <Auto-Tune> capability. The functionality of it

is described in chapter “Fully automatic Calibration, Tuning & Measurement by Phoenix

<Auto-Tune>”.

It is strongly recommended to use TXP as external trigger for all TX tunings. External triggering

gives the following advantages:

• trigger for spectrum analyzer (gated sweep)

• trigger for oscilloscope

• trigger for power meter (avoid exchanging of attenuator and getting better accu-

racy in power measurements)

Nevertheless, manual tuning is described below. It has to be carried out in all three bands and

both modes (EDGE and GMSK).

Note: TX Power Tuning must be done with a peak power meter, e.g. Anritsu model ML2408A

with Anritsu Peak Power Sensor MA2442A and a suitable attenuator.

The use of the built-in power meter of GSM testers is likely to cause larger errors than the use

of a dedicated power meter and might cause miss tuning so that the phone might be not com-

pliant with the GSM specifications.

Only bold printed values will be tuned. Those values may differ from version to version, please

rely on latest Phoenix version running on your PC.

Set power supply voltage Vcc = 3.6V !