Tx I/Q Tuning - Nokia RH-6 Series Rf Description & Troubleshooting

RH-6
7 - RF Description & Troubleshooting
Press Stop and a window pops up:
Select 'Save values to Phone Permanent Memory'.
Press Yes and the GSM1900 TX Power Level Tuning is finished.

TX I/Q tuning

This tuning must be performed in all three bands.
TX I/Q tuning GSM900
Caution: In the case you use a spectrum analyzer make sure that the external
attenuation (20-30dB) between phone and spectrum analyzer is high
enough that the input of the analyzer can't be destroyed. Adjust the ref-
erence level offset according to the insertion loss from the phone to the
spectrum analyzer.
Note: During TX I/Q Tuning in EGSM900 band, an additional calibration value for the
battery voltage A/D converter is taken. Therefore it is important to set the operating volt-
age for this alignment to 3.6V.
PC/Phone operation:
Set operating mode to local mode.
Set supply voltage to 3.6V.
Select
Wait until the TX IQ Tuning window pops up.
Select
Wait until the RF Controls window pops up.
Connect a Spectrum Analyzer or GSM tester with the option *Narrow Spectrum' to the
antenna pads of the phone.
Page 62
Company Confidential
Maintenance
Tuning
TX IQ Tuning
Maintenance
Tuning
RF Controls
Copyright © 2003 Nokia Corporation.
Company Confidential
CCS Technical Documentation
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Issue 1 10/2003