Nokia 3600, 3620 Service Manual
CCS Technical Documentation
3 - Service Software
Company Confidential
NHM-10
Issue 2 01/2004
Copyright 2004 Nokia Corporation
Page 3-29
Company Confidential
Press Stop, Write to PM Area (In the RX Band Filter Response Compensation window) and
a window pops up:
a window pops up:
Press Yes and the EGSM RX Band Filter Response Compensation is finished.
TX I/Q Tuning
This tuning must be done in both bands.
EGSM (EGSM850)
Caution: In case you use a spectrum analyser make sure that the external attenua-
tion (20 - 30dB) between phone and spectrum analyser is high enough
that the input of the analyser can’t be destroyed. Adjust the reference
level offset according to the insertion loss from the phone to the spectrum
analyser .
PC/Phone operation:
Set operating mode to local mode
Select
Maintenance
Alt-M
Tuning
T
TX IQ Tuning
I
Wait until the TX IQ Tuning window pops up.
Select Maintenance
Alt-M
Tuning
T
RF Controls
F
Wait until the RF Controls window pops up.
Connect a Spectrum Analyzer or GSM tester with the option *Narrow Spectrum' to the
RF connector of the phone.
RF connector of the phone.
If a spectrum analyzer is used then use the following settings.
EGSM/EGSM850
Center Frequency
897.4 MHz
Frequency Span
300 kHz
Resolution Bandwidth
3kHz
Video Bandwidth
3kHz
Sweep Time
3 sec.