Nokia 3600, 3620 Service Manual
NHM-10
Company Confidential
3 - Service Software
CCS Technical Documentation
Page 3-34
Copyright 2004 Nokia Corporation
Issue 2 01/2004
Company Confidential
GSM1900 (PCS)
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.
Select in the RF Controls Window:
Select
Band
GSM 1900
GSM1900
Center Frequency
1880MHz
Frequency Span
300 kHz
Resolution Bandwidth
3 kHz
Video Bandwidth
3 kHz
Sweep Time
3 sek.
Sweep Type
Clear/Write
Detector Type
Max Peak
Reference level
35 dBm
Marker 1
1879.93229 MHz
Marker 2
1880 MHz
Marker 3
1880.06771 MHz