Nokia NEM-4 Series Troubleshooting Instructions page 124

NEM-4
RF Troubleshooting
The Spectrum Analyzer now shows a plot like this:
Ref Lvl Ref Lvl
35 dBm 35 dBm
35
27.5 dB Offset
30
20
10
0
-10
-20
-30
-40
-50
-60
-65
Center 897.4 MHz
Date: 14.JAN.2002
Use the variables 'Amplitude difference' and 'Phase difference' to adjust the +67kHz sig-
nal to a minimum level (Marker 3). After tuning to the minimum the level difference
between the peak levels at marker 1 and 3 must exceed 40dB. Tuning is possible by using
arrow keys on the keyboard. Pushing the sliders by using the mouse is less sensitive but
even possible.
Page 6(b)-120
Company Confidential
Marker 1 [T1]
33.65 dBm
897.33229000 MHz
1
30 kHz/
13:20:36
Copyright  2003 Nokia Corporation.
Company Confidential
CCS Technical Documentation
RBW 3 kHz
VBW 3 kHz
SWT 3 s
1 [T1]
2 [T1]
3 [T1]
3
2
RF Att 30 dB
Unit dBm
33.65 dBm
A
897.33229000 MHz
-19.54 dBm
897.40000000 MHz
-10.79 dBm
897.46771000 MHz
1MA
Span 300 kHz
Issue 1 09/2003