NEM-4
Company Confidential
RF Troubleshooting
CCS Technical Documentation
Page 6(b)-128
Copyright
2003 Nokia Corporation.
Issue 1 09/2003
Company Confidential
The Spectrum Analyzer now shows a plot like this:
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.
Ref Lvl
35 dBm
Ref Lvl
35 dBm
RBW
3 kHz
VBW
3 kHz
SWT
3 s
RF Att
30 dB
30 kHz/
Center 1.88 GHz
Span 300 kHz
27.5 dB Offset
A
1MA
Unit
dBm
-60
-50
-40
-30
-20
-10
0
10
20
30
-65
35
1
2
3
Marker 3 [T1]
-15.03 dBm
1.88006771 GHz
3 [T1] -15.03 dBm
1.88006771 GHz
1 [T1] 25.16 dBm
1.87993229 GHz
2 [T1] -23.51 dBm
1.88000000 GHz
Date: 15.JAN.2002 10:57:06