Nokia NEM-4 Series Troubleshooting Instructions page 127

CCS Technical Documentation
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 1.7478 GHz
Date: 15.JAN.2002
The purpose of this tuning is to tune the carrier signal and the +67kHz signal to a mini-
mum level (Marker 2 and 3).
Use the variables 'TX I DC offset' and 'TX Q DC offset' to adjust the carrier signal to a
minimum level (Marker 2). After tuning to the minimum the level difference between the
peak levels at marker 1 and 2 must exceed 40dB.
Tuning is possible by using arrow keys on the keyboard. Pushing the sliders by using the
mouse is less sensitive but possible.
Issue 1 09/2003
Company Confidential
Marker 3 [T1]
-10.57 dBm
1.74786771 GHz
1
30 kHz/
10:18:02
Copyright  2003 Nokia Corporation.
Company Confidential
RBW 3 kHz
VBW 3 kHz
SWT 3 s
3 [T1]
1 [T1]
2 [T1]
2
3
NEM-4
RF Troubleshooting
RF Att 30 dB
Unit dBm
-10.57 dBm
A
1.74786771 GHz
24.34 dBm
1.74773229 GHz
-2.92 dBm
1.74780000 GHz
1MA
Span 300 kHz
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