Baseband Manual Tuning Guide; Energy Management Calibration - Nokia RM-42 Service Manual

RM-42
BB Troubleshooting and Manual Tuning Guide

Baseband manual tuning guide

Energy management calibration

Before you begin
Energy Management (EM) calibration is performed to calibrate the setting (gain and offset) of AD converters in
several channels (that is, battery voltage, BSI, battery current) to get an accurate AD conversion result.
Hardware setup:
• An external power supply is needed.
• Supply 12V DC from an external power supply to CU-4 to power up the phone.
• The phone must be connected to a CU-4 control unit with a product-specific flash adapter.
Steps
1. Place the phone to the docking station adapter (CU-4 is connected to the adapter).
2. Start Phoenix service software.
3. From the File menu, choose Scan Product.
4. From the Tuning menu, choose Energy Management Calibration.
5. To show the current values in the phone memory, click Read, and check that communication between the
phone and CU-4 works.
6. Check that the CU-4 used check box is checked.
7. Select the item(s) to be calibrated.
Note: ADC calibration has to be performed before other item(s). However, if all calibrations are selected
at the same time, there is no need to perform the ADC calibration first.
8. Click Calibrate.
The calibration of the selected item(s) is carried out automatically.
The candidates for the new calibration values are shown in the Calculated values column. If the new
calibration values seem to be acceptable (please refer to the following "Calibration value limits" table),
click Write to store the new calibration values to the phone permanent memory.
Parameter
ADC Offset
ADC Gain
BSI Gain
VBAT Offset
VBAT Gain
IBAT (ICal) Gain
9. Click Read and confirm that the new calibration values are stored in the phone memory correctly. If the
values are not stored to the phone memory, click Write and/or repeat the procedure again.
10. To end the procedure, close the Energy Management Calibration window.
9241872 (Issue 1)
Table 11 Calibration value limits
Min.
-20
12000
1100
2400
19000
7750
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Max.
30
14000
1300
2650
23000
12250
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