![TestPad BTS-2002H Manual Download Page 35](http://html.mh-extra.com/html/testpad/bts-2002h/bts-2002h_manual_1092569035.webp)
Shenzhen TestPad Electronic Co., Ltd.
http://www.test-pad.com
35
5
Select Item 5, and then press ENTER to calibrate the impedance. To avoid the error caused by
contact resistance and lead resistance, do use a four-wire system to connect the standard resistor
(see the figure below) to measure it. Press LEFT or RIGHT to ensure that the resistance
displayed on the tester is equal to the actual resistance, and then press ENTER to confirm the
calibration. Press ESC to exit the current mode.
Caution: The actual resistance can be the nominal resistance of the high-precision resistor or be
measured using a high-precision digital bridge.\
6
Select Item 6, and then press ENTER to correct the resistance of the connection line. Short
connect two test pins or two test clips, press LEFT or RIGHT to ensure that the displayed value
is 0, and then press ENTER to confirm the calibration. Press ESC to exit the current mode.
7
After each calibration, select “Save return” and press ENTER to save all the calibration settings.
Otherwise, the calibration settings will become invalid after the tester is shut down, and the
previous settings will be restored when the tester is started next time.
8
Select Item 8 to restore all the default calibration settings. In the event of significant deviation in
all the data because of unexpected reasons or misoperations, it is recommended to restore the
default settings and then perform the calibration.