User Guide

Issue 1 12/04 COMPANY CONFIDENTIAL 90
Copyright © 2004 Nokia. All Rights Reserved.
RAE-6/RA-4
3 - Service Software Instructions Nokia Customer Care
16.To tune the undesired sideband to minimum, use Amplitude/Phase difference
controls (f0 + 67.71kHz on spectrum analyzer screen).
Tuning limits are the same for all bands (GSM/EDGE900, GSM/EDGE1800 and
GSM/EDGE1900):
17.When the IQ spectrum is balanced, click Next to continue EDGE900 Tx IQ tun-
ing.
Spectrum analyzer settings are the same as for GSM900 IQ tuning.
NOTE! In EDGE-mode, the undesired sideband is located at 50.8kHz from f0.
18.When the IQ spectrum is balanced, click Next to continue GSM1800 Tx IQ tun-
ing.
Tuning limits Value
I DC Offset -6…+6
Q DC Offset -6…+6
Amplitude difference -1…+1
Phase difference
- 80°…100°