Pa Detection; Temperature Sensor Calibration - Nokia RM-42 Service Manual

RM-42
Nokia Customer Care RF Troubleshooting and Manual Tuning Guide
Results
Figure 69 RF channel filter calibration typical values

PA detection

Context
PA detection procedure asks DSP to detect which PA manufacturer is used for GSM and WCDMA PAs.
If PA is changed or if PMM data is corrupted, PA detection has to be performed before Tx tunings.
Steps
1. From the dropdown menus, set "Operating mode" to Local.
2. From the Product menu, choose "System mode" and then choose WCDMA, GSM or Dual and click Write.
3. From the Tuning menu, choose PA Detection.
4. Click Tune.
5. Check that the detected PA manufacturers are corresponding to the actual chips on the board.
6. To end the procedure, click Close.

Temperature sensor calibration

Context
There is a temperature sensor integrated into VINKU ASIC. VINKU provides DC-voltage, which is temperature
dependent.
Temperature sensor calibration is done in room temperature, in which offset caused by VINKU variation and
AD-converter inside RETU are nullified.
The module is able to do this calibration by itself, no external equipment is needed.
The temperature of the module and components must be 23 +/-2 degrees.
Steps
1. From the dropdown menus, set "Operating mode" to Local.
2. From the Product menu, choose "System mode" and then choose WCDMA, GSM or Dual and click Write.
3. From the Tuning menu, choose WCDMA -> Temperature Sensor Calibration.
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