Nokia n-gageqda 服务手册
RH-47
Company Confidential
3 - Service Software Instructions
Nokia Customer Care
Page 52
Copyright © 2004 Nokia Corporation
Issue 1 05/04
Company Confidential
The spectrum analyzer shows a plot like this:
4
To move the slider, use “+” and “-“ keys.
5
To adjust the carrier signal to a minimum level (Marker 2), use the variables “Tx I
DC offset” and “Tx Q DC offset”.
DC offset” and “Tx Q DC offset”.
The purpose of this tuning is to tune the suppressed carrier signal and the first
sidelobe signal to a minimum level (Marker 2 and Marker 3).
sidelobe signal to a minimum level (Marker 2 and Marker 3).
After tuning to the minimum the level difference between the peak levels at
marker 1 and marker 2 must exceed 30 dB.
marker 1 and marker 2 must exceed 30 dB.
Tuning is possible by using arrow keys on the keyboard. Pushing the sliders by
using the mouse is less sensitive.
using the mouse is less sensitive.