Nokia RH-6 Series Rf Description & Troubleshooting page 64

RH-6
7 - RF Description & Troubleshooting
The setup should now look like this:
The Spectrum Analyzer now shows a plot like this:
Ref Lvl Ref Lvl
35
30
20
10
0
-10
-20
-30
-40
-50
-60
-65
Center 897.4 MHz
Date:
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.
Use the variables 'TX I DC offset' and 'TX Q DC offset' to adjust the carrier signal to a
minimum level (marker 2). Tuning is possible by using arrow keys on the keyboard. Push-
ing the sliders by using the mouse is less sensitive but even possible.
Page 64
Company Confidential
Marker 1 [T1]
33.35 dBm
35 dBm 35 dBm 897.33229000 MHz
1
27.5 dB Offset
14.JAN.2002 13:11:55
Copyright © 2003 Nokia Corporation.
Company Confidential
CCS Technical Documentation
RBW 3 kHz RF Att
VBW 3 kHz
SWT 3 s Unit
1 [T1]
897.33229000 MHz
2 [T1]
897.40000000 MHz
3 [T1] -10.74 dBm
897.46771000 MHz
2
3
30 kHz/ Span 300 kHz
30 dB
dBm
33.35 dBm
A
-6.76 dBm
1MA
Issue 1 10/2003