Nokia RM-94 Service Software And Tuning Instructions page 60

Nokia Customer Care
If a spectrum analyzer is used, make the following settings.
Center Frequency
Frequency Span
Resolution Bandwidth
Video Bandwidth
Sweep Time
Sweep Type
Detector Type
Reference level
Marker 1
Marker 2
Marker 3
The spectrum analyzer now shows a plot like this:
Ref Lvl Ref Lvl
35 dBm 35 dBm
35
21 dB Offset
30
20
10
0
-10
-20
-30
-40
-50
-60
-65
Center 897.4 MHz
The purpose of this alignment is to tune the carrier signal (at marker 2) and the +67kHz signal
(at marker 3) to a minimum level.
60
3 - Service Software and Tuning Instructions
Marker 1 [T1]
25.88 dBm
897.33229000 MHz
1
2
30 kHz/
COMPANY CONFIDENTIAL
Copyright © 2005 Nokia. All Rights Reserved.
GSM900
897.4 MHz
300 kHz
3kHz
3kHz
100 msec.
Clear/Write
Max Peak
35 dBm
897.33229 MHz
897.4 MHz
897.46771 MHz
RBW 3 kHz RF Att
VBW 3 kHz Mixer
SWT 3 s Unit
1 [T1] 25.88 dBm
897.33229000 MHz
2 [T1] -7.19 dBm
897.40000000 MHz
3 [T1] -11.55 dBm
897.46771000 MHz
3
Span 300 kHz
RM-94
30 dB
-20 dBm
dBm
A
LN
1MA
F2
F1
Issue 1 04/2005