Wcdma Tx Pa Bias Current Tuning - Nokia NHM-1 Series Software Instructions
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- Technical documentation manual (8 pages) ,
- Troubleshooting instructions (50 pages) ,
- Service manual (25 pages)
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CCS Technical Documentation
WCDMA TX PA Bias Current Tuning
In this tuning the power supply to the phone must be set to 3.8V.
•
Calibration is started from the Phoenix menu:
•
Press "Start" .
•
After pressing the "OK" button record the lowest current consumption of the
phone. Increase the PA Bias DAC value with the arrow buttons until the tuned
current has increased by the 25mA target.
•
Press "Finish", and save the tuning value for PA bias.
The tuning value sets the IPA1 current output from UEM that determines the bias current
of the second stage of the WCDMA PA.
Issue 1 11/03
Tunings/WCDMA/TX PA bias tuning
Copyright Nokia. All rights reserved..
NHM-1
Page 77
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