Table of Contents
Advertisement
9.3.6 Battery Temperature AD Calibration
1. Connect PS-2 so that 1.42V is supplied to TBAT.
2. Monitor the average value of the tbat ADC reading.
If this average value is outside the range of 3700 to 3300, then the unit has failed.
3. Enter the average tbat ADC value into the Battery ADJ Excel sheet in the tbat=1.42V field.
4. Change the power supply PS-2 voltage from 1.42 V to 0.48 V.
5. Monitor the average value of the tbat ADC reading.
If this average value is outside the range of 2300 to 2800, then the unit has failed.
6. Enter the average tbat ADC value into the Battery ADJ Excel sheet in the tbat=1.42V field. The recorded
VBAT/TBAT values will be used to automatically calculate the VBAT_GAIN/OFFSET and TBAT_GAIN/OFFSET.
It will then be stored to the eep file of the BATT format Excel sheet.
7. Convert the Excel sheet of EEP data to TXT(text) format.
File -> Save As -> Text(Tab delimited) -> Save
8. Rename the text file from the original filename and then save to PC.
PROVISIONAL ISSUE
Input the calibrated VBAT & TBAT value
− 9-8 −
Advertisement
Table of Contents
