Nokia RH-29 Series Manual page 36

RH-29
6b - RF Troubleshooting
The setup should now look like this:
It is possible to measure frequency of 3769,6MHz at the output of the VCO (G701) using
a resistive probe and a spectrum analyzer. It is possible to measure tuning voltage at
charge pump output (C710) easily. For f
2.3V . 2.8V
DC DC
T702
Input
VCO
Out
Charge Pump
O/p Test Point
C710
If this is not the case, then go to troubleshooting chart in this document for trouble-
Page 8
Company Confidential
(Tuning sensitivity of VCO is 240MHz/V typ.).
Figure 14: PLL Synthesizer Test Points
Copyright © 2004 Nokia Corporation
Company Confidential
= 3526.4MHz the tuning voltage should be
VCO
Nokia Customer Care
VR7
2.8V
T702
Balanced
Output
VC
0V - 4.7V
Issue 1 05/2004