Datasheet

Advanced bqMTester Instructions

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4.6.8 Voltage Frame

This frame will be grayed out if not selected in the Type of calibration to perform frame. This frame

contains two values:

1. Reference/FSV: The tester calibrates the voltage gain by manipulating the Full Scale Voltage

Reference. Do not change the values in this field. The Voltage frame looks the same for most of the

parts, except for the bq306x. For bq306x device-based parts, extra K-factor fields appear. The frame

for K-factor–based parts are shown in Figure 7.

Figure 7. Reference/FSV and K-Factor Fields

2. % Error: The %Error field is used as a rough test to check the Voltage Measurement Circuitry. After

the bqMTester calibrates the voltage gain, then it compares the new calibration value to what is in the

Reference/FSV field.

4.6.8.1 Limit to Force the Voltage Calibration

If the percent difference between the two values is more than 25%, then it fails the calibration because it

assumes something must be grossly wrong to get a value more than 25% from the nominal. As shown in

Figure 7, bq306x device-based parts show limits to voltage calibration in ±mV. In this case, if the voltage

read by the device is within this limit, no calibration is done. Precious time is saved (~4s) during calibration

if voltage calibration can be avoided. In the case where voltage calibration is always needed, a 0 can be

entered in this field.

4.6.9 Temperature Frame

The Temperature frame will be grayed out if not selected in the Type of calibration to perform frame.

This frame contains one value. Enter the maximum absolute value of offset that the bqMTester software

will be allowed to put into any of the data flash temperature offset registers for the tested module. This is

not an accuracy verification. This is a gross Error detection. The default value of this field is 40, meaning

that the calibrated offset put in the data flash cannot exceed positive or negative 4°C. For internal

Temperature Sensor calibration, it is recommended to increase this value because the internal

temperature sensor offset accuracy commonly exceeds 4°C.

4.6.10 Starting Serial Number

Enter the value for the serial number of the first smart battery module to be tested. This number will be

incremented by one as each new module is tested. If Skip On Error is checked, the number will not

increment in the case of a module that fails the test. The default for this box is 1. This value must be

specified as a positive integer value.

4.6.11 Date

Enter the value for the desired date to be programmed into the smart battery module. If Use Current Date

is checked, the system date from the PC running the bqMTester software will be used.

4.6.12 Log File Name

Enter the complete path and file name to be used for the log file. This file contains all relevant test data for

each smart battery module tested. If Clear Log button is clicked, the log file contents will be deleted.

4.6.13 Pack Lot Code or Manufacturer Info

Enter the value for the Lot Code of the group of smart battery modules currently being tested. This

number will not change until it is changed manually and will be programmed into each smart battery

module tested. This value must be specified as a positive integer value.

Advanced bqMTester SLUU397A–February 2011– Revised May 2011

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