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10. To end the tuning, click "Finish" and "Close".
GSM transmitter tunings
Tx IQ tuning (GSM)
Context
• The Tx path branches to I and Q signals at RF I/Q modulator. Modulator and analog hardware located after
it cause unequal amplitude and phase disturbance to I and Q signal paths. Tx IQ tuning balances the I and Q
branches.
• Tx IQ tuning must be performed on all GSM bands.
Steps
1. From the dropdown menus, set "Operating mode" to Local, "System mode" to GSM, and "Band" to GSM900.
RM-36
RF Troubleshooting and Manual Tuning Guide
Nokia Customer Care
Issue 1
Company Confidential
Page 7–39
Copyright ©2005 Nokia. All Rights Reserved.
Содержание 6680 RM-36
Страница 407: ...9 System Module Nokia Customer Care Issue 1 Company Confidential Page 9 1 Copyright 2005 Nokia All Rights Reserved ...
Страница 465: ...10 Schematics Nokia Customer Care Issue 1 Company Confidential Page 10 1 Copyright 2005 Nokia All Rights Reserved ...
Страница 479: ...www s manuals com ...