User Guide

Figure 61 PLL Troubleshooting diagram

The 26MHz signal from the VCXO can be measured by probing R2900. The level at this point is approx. 770mVpp.

Frequency of this oscillator is adjusted by changing the AFC-register inside the UEM IC. Example Signal Measured

at VCXO output (R2900).

RH-70

RF troubleshooting Nokia Customer Care

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