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Nokia Customer Care
66
COMPANY CONFIDENTIAL
Issue 2 06/2005
Copyright © 2005 Nokia. All Rights Reserved.
Set the spectrum analyser or GSM tester for the required settings and press “OK”
Figure 59:I/Q tuning
Begin tuning with data from selected place.
Tune DC offset values to lowest carrier. Use Side arrows or +, - .
Tune Amplitude and phase to lowest sideband.
When satisfied with the result, press Next. (The sidebands should hardly be visible).Or for
CMU200 the supression should be better than -40dBc.
Figure 60:I/Q tuning