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Changed component
Perform the following tunings
Any component in the GSM TX RF chain before the PA Tx IQ Tuning, Tx Power Level Tuning
Any component in the GSM TX RF chain after the PA
or PA
Tx Power Level Tuning
Any component in the WCDMA TX RF chain before the
PA
Tx AGC & Power Detector, Tx Band Response
Calibration, Tx LO Leakage
Any component in the WCDMA TX RX chain after the
PA, PA, power detector or PA switch mode power
supply
Tx AGC & Power Detector, Tx Band Response
Calibration, PA Detection
Any component in the GSM RX chain
Rx Calibration, RX Band Filter Response
Compensation, RX AM Suppression
Any component in the WCDMA RX chain
Rx AGC Alignment, RX Band Response Calibration
VCTCXO (G7501)
Rx Calibration (GSM900 band)
System mode independent manual tunings
RF channel filter calibration
Context
Rx channel filter calibration tunes Rx and Tx ASICs' internal low pass filters that limit the bandwidth of BB IQ
signals.
One common calibration is made for GSM and WCDMA.
Table 11 RF channel filter calibration tuning limits
Min
Typ
Max
Tx filter
0
10
31
Rx filter
0
16
31
Steps
1. From the "Operating mode" dropdown menu, set mode to "Local".
2. From the Tuning menu, choose "RF Channel Filter Calibration".
3. Click Tune.
4. To save the values to the PMM (Permanent Memory) area, click Write.
5. To close the tuning window, click Close.
RM-36
Nokia Customer Care
RF Troubleshooting and Manual Tuning Guide
Page 7–24
Company Confidential
Issue 1
Copyright ©2005 Nokia. All Rights Reserved.
Содержание 6680 RM-36
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