Flowchart Notes - Nokia NPD-4 Series Troubleshooting - Gps

NPD-4
Troubleshooting — GPS

Flowchart Notes

Clocks and Power
The proper GPS_RF_CLK is a 19.2 MHz, approximately 800mV peak-to-peak sine wave
(see Figure 3).
The GPS_CLK should be a 16.3MHz, 1.8V peak-to-peak square wave (see Figure 4).
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Figure 3: 19.2MHz System Clock
Figure 4: GPS_CLK
Nokia Corporation
CCS Technical Documentation
Confidential Issue 1 02/2003