User Guide

6255/6255i/6256/6256i (RM-19)
RF Description and Troubleshooting Nokia Customer Care
Page 40 ©2005 Nokia Corporation Company Confidential Issue 2 05/2005
3. Measure a 300kHz tone on the analyzer. You should see a typical -21dBm IQ tone
for CDMA Cell.
Figure 31: Receiver IQ level on Cell band
Figure 32 shows the Cell spectrum and the test points located on the top side of the
main PWB. All four test points should be approximately equal. WARNING: Direct current
is present on these test points.
Figure 32: Cell spectrum and test points on the top side of the main PWB
dBm
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
Cell I Q Output
Trace A
Centre: 300 kHz Span: 200 kHzAtten: 10 dB
Res BW: 3 kHz Vid BW: 3 kHz Sweep: 100 ms
5/5/2004 3:29:30 PM HP8595ECellIQ.spt
1
1
Trace A
302 kHz
-21.2500 dB
m
Rx_IP
Rx_IN
Rx_QP
Rx_QN