Shenzhen TestPad Electronic Co., Ltd.
http://www.test-pad.com
34
Detailed calibration procedure:
In the main menu of the tester, select Item 8 “Enter Calibration”, and then press ENTER to display
the following password verification screen:
In the password field, press DOWN four times continuously, press RIGHT six times continuously,
and then press ENTER to display the calibration screen, which lists the following items:
1. VOL CAL:
2. CHR_CUR:
3. DISCHR_CUR:
4. OVER_CUR:
5. IMP_CAL:
6. IMP_OFFSET:
7. Save return:
8. Reset return:
1
Select Item 1, and then press ENTER to calibrate the voltage. Use the standard red-and-white
connection line to connect the external DC power source (or use the alternative Li-ion battery).
Connect the red pen to the anode and the black pen to the cathode. Then the tester measures the
voltage of the power source and displays it, for example, 5.02V. Meanwhile, use the digital
multimeter to measure the voltage of the battery. Then press LEFT or RIGHT to calibrate the
value displayed on the tester to make it equal to the value displayed on the multimeter, and then
press ENTER to confirm the calibration. Now the voltage displayed on the tester should be
equal to that displayed on the multimeter. If they are not equal, repeat the above calibration
procedure until they are equal. After the calibration, press ESC to exit the current mode.
2
Select Item 2, and then press ENTER to calibrate the charge current. Connect a constant-current
electronic load (CC 1.5A) or a fixed high-power resistor (3Ω/20W) to the test end, and serially
connect the current grade of the digital multimeter to the electronic load. As with the above the
calibration process, press LEFT and RIGHT to ensure that the current displayed on the tester is
equal to that displayed on the multimeter, and then press ENTER to confirm the calibration.
Press ESC to exit the current mode.
3
Select Item 3, and then press ENTER to calibrate the discharge current. Prepare an external
power source (the same as the one in voltage calibration in Item 1). Serially connect the digital
multimeter to the anode of the power source; connect the current grade of the multimeter to the
red pen of the tester, and connect the cathode of the power source to the black pen. Then the
tester displays a constant discharge current. Press LEFT or RIGHT to ensure that the current
displayed on the tester is equal to that displayed on the multimeter, and then press ENTER to
confirm the calibration. Press ESC to exit the current mode.
4
Select Item 4, and then press ENTER to calibrate the over-current protection current. The
procedure is the same as that for Item 3.
Please type Password
for Calibration
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