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RM-701
BB Troubleshooting and Manual Tuning Guide
GPS ME oscillator test
Context
The 26 MHz GPS TCXO is compared with the CE Ref Clk and the output is the GPS ME offset.
Steps
1.
Place the phone in the flash adapter or connect a data cable to the phone.
Phoenix service software.
2.
Start
Bus Method (FBUS or USB) and Port from the Connections box.
3.
Select the
Choose File → Scan Product.
4.
Choose Testing → GPS Control.
5.
6.
Select the ME Test tab.
7.
Under Tests, check ME OSC offset.
8.
Select Oscillator offset parameters.
9.
Type in the correct parameters:
•
ME oscillator offset limit (Hz) : 194
10. Click Start test.
Results
The Offset result will be returned and should be within the limits of +-194 Hz.
Issue 1
Figure 24 GPS RTC oscillator test
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