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Calibrate Screen
8
Calibrate Screen
To ensure proper calibration, perform the following steps. These steps may or may not be required,
depending on the type of calibration being performed. Only one calibration item can be selected and
calibrated at a time.
8.1
To Calibrate the bq27742
Calibrate each item one at a time in the order presented in this document. Select the types of calibration
to be performed by checking the corresponding field (see
Enter the measured values for the types selected, if necessary.
Then press the "Calibrate" button. After all calibration is complete, close the Calibrate screen.
8.2
Temperature Calibration
•
Select if the temperature sensor to calibrate is the internal or the external.
•
Measure the temperature for PACK.
•
Type the temperature value into Enter measured value.
•
Press Calibrate Gas Gauge button.
8.3
Voltage Calibration
•
Measure the voltage across Pack+ and Pack– with a calibrated meter.
•
Type the voltage value in mV into Enter measured value.
•
Press Calibrate Gas Gauge button.
8.4
Coulomb Counter Offset Calibration
This performs the internal calibration of the coulomb counter input offset. Check the Calibrate CC Offset
field and press the Calibrate Gas Gauge button.
14
bq27742EVM Single-Cell Impedance Track™ Technology Evaluation Module
Figure 9. Calibration Screen
Copyright © 2014, Texas Instruments Incorporated
Figure
9).
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SLUUAX8 – March 2014
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