Nokia NEM-4 Series Troubleshooting Instructions page 132

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 1.88 GHz
Date: 15.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)-128
Company Confidential
Marker 3 [T1]
-15.03 dBm
1.88006771 GHz
1
30 kHz/
10:57:06
Copyright  2003 Nokia Corporation.
Company Confidential
CCS Technical Documentation
RBW 3 kHz
VBW 3 kHz
SWT 3 s
3 [T1]
1 [T1]
2 [T1]
3
2
RF Att 30 dB
Unit dBm
-15.03 dBm
A
1.88006771 GHz
25.16 dBm
1.87993229 GHz
-23.51 dBm
1.88000000 GHz
1MA
Span 300 kHz
Issue 1 09/2003