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RF manual tuning guide
Required manual tunings after component changes
Important:
After RF component changes, always use autotuning. Manual tunings are only required
in rare cases.
If, however, manual tuning is used, only relevant tunings should be performed. Refer to the following table:
Changed component
Perform the following tunings
RF ASIC N7500 (RM-92) or N7505 (RM-91)
RF Channel Filter Calibration, Temperature Sensor
Calibration, Rx calibration (GSM), Rx band filter
response compensation (GSM), TxIQ Tuning (GSM),
Tx Power Level Tuning (GSM), Rx calibration
(WCDMA), Tx AGC & Power Detector (WCDMA), Tx
Band Response Calibration (WCDMA), Tx LO Leakage
(WCDMA)
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
Any component in the WCDMA RX chain
Rx AGC Alignment, RX Band Response Calibration
VCTCXO G7501 (RM-91) G7500 (RM-92)
Rx Calibration (GSM900 band)
WLAN Module (N5500)
WLAN Tx Tuning
RM-91; RM-92
Nokia Customer Care
RF Troubleshooting and Manual Tuning Guide
Page 7 –28
COMPANY CONFIDENTIAL
Issue 1
Copyright © 2006 Nokia. All rights reserved.