Nokia 6015 Troubleshooting - Rf page 30

6015/6015i/6016i/6019i (RH-55), 6012 (RM-20)
Troubleshooting - RF
Cell I Q Output
dBm
Trace A
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
Centre: 300 kHz
Res BW: 3 kHz
5/5/2004 3:29:30 PM
Figure 24 shows the Cell spectrum with an inject tone at -75dBm, as well as the IQ
output test points. Note that DC is present on the IQ output test points, and all test
points should be approximately equal.
Figure 24: Cell spectrum (left) and IQ output test points (right)
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1
Atten: 10 dB
Vid BW: 3 kHz
CellIQ.spt
Figure 23: Receiver IQ level on CDMA Cell band
©2004 Nokia Corporation
Nokia Customer Care
Span: 200 kHz
Sweep: 100 ms
HP8595E
RX_IP RX_IN
Company Confidential
1
Trace A
302 kHz
-21.2500 dBm
RX_QP RX_QN
Issue 1 08/2004