Nokia n-gageqda 服务手册
Nokia Customer Care
3 - Service Software Instructions
Company Confidential
RH-47
Issue 1 05/04
Copyright © 2004 Nokia Corporation
Page 55
Company Confidential
11
To finish the tuning process, click OK.
Tx power level tuning
Prerequisites:
•
A spectrum analyzer is needed.
•
Connect the phone according to the setup diagrams.
•
Turn on the
power meter function of the spectrum analyzer used!
Note: Use attenuator in order not to overload the spectrum analyzer.
•
With Tx power level tuning, the coefficients are adjusted for each power
level.
level.
•
Must be done separately on each band.
•
Start power level tuning at GSM850, then continue at GSM1900 band.
•
In GSM850 and GSM1900 bands the power level tuning is made only for
high PA mode.
high PA mode.
•
Remember to take into account jig and cable attenuations!
To start tuning:
1
From the Tuning menu, choose Tx Power Level Tuning.