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8.5
Board Offset Calibration
This performs the offset calibration for the current offset of the board. It takes approximately 35 seconds to
complete.
It is expected that no current is flowing through the sense resistor while performing this calibration step.
Remove load and short PACK– to LOAD–.
Press the "Calibrate" button.
Remember to calibrate board offset after coulomb counter calibration.
8.6
Current Calibration
•
Connect a load to LOAD– and LOAD+ that draws approximately 1 A, or connect a current source to
PACK+ and CELL+. Ensure that the Measured Current reported is negative, or else reverse the
connections.
•
Measure the current with a calibrated meter, and type the value into Enter measured Current using (–)
for current in discharge direction.
•
Check the Calibrate Current field
•
Press the "Calibrate" button.
•
Disconnect or stop the load current after calibration.
SLUUAX8 – March 2014
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bq27742EVM Single-Cell Impedance Track™ Technology Evaluation Module
Copyright © 2014, Texas Instruments Incorporated
Calibrate Screen
15
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