User Guide

CCS Technical Documentation
Page 46 ¤Nokia Corporation Issue 2 11/02
Figure 2: Proximity Sensor Calibration dialog with start values
The Proximity Detector Calibration Setup figure shows the Proximity Sensor Calibration
tool. Gain, Detection threshold, and Fault threshold in the left column are the values in
phone permanent memory. Middle column shows start values that are used in the cali-
bration. They are defined by Nokia Mobile Phones, and should not be changed without
Nokia Mobile Phones request.
Note! Values in the Figure 2 are not correct after 06/2002.
• Default start values (06/2002) are Gain 7, Detection threshold 4, Detection offset
1, Fault threshold 3 and Fault offset –2.
• Press Start to start the calibration, and follow instructions. At first Phoenix ask
you to place the reflectance target above the proximity lenses. Calibration may
be done only with 20% reflectance target (size 50mm*50mm, distance from the
lenses 50mm). Use only Nokia accepted calibration target that is provided with
MJF-7.
• After successful detection/gain calibration Phoenix asks you to remove the cali-
bration target for fault detection threshold calibration. Make sure, that there is
at least 1500mm free space above the phone.
• If something has gone wrong in the calibration, return message gives valuable
information for error hunting. From Help menu you can find some indication of
the fault, more detailed information is found in the baseband troubleshooting
document. In the figure Error message after failed calibration you can see the
error message after failed fault threshold calibration, it is FAULT_OVER_LIMIT.
• Message after successful calibration is in the figure Return message when cali-
bration was successful.