12
Function key input as standard value in calibration mode.
6. -key
In the state to be tested, the function key selected as the parameter group;
During parameter setting, it is used as the function key for inputting various test parameter data;
Function key input as standard value in calibration mode.
7. EXIT key
In the setting mode, as a function key to leave the setting mode and save the setting value;
In the calibration mode, it is used as a function key to close the output and save the standard
value.
8. Measured terminal
As the loop test end of the DUT, test the withstand voltage and insulation resistance in
combination with 9, and test the ground resistance in combination with 12, 13, and 14.
9. High voltage output
Special output terminal can withstand high voltage within 10KV. As the high-voltage test end of
the test piece.
10. LCD display
20-character x 2-line backlit LCD display for displaying setting data or test results.
11. Test in progress
When the instrument starts to output voltage, the indicator light in the high-voltage sign will
flash, indicating that "high-voltage output is dangerous."
12. Ground resistance detection high-end
Combine with 8 to detect ground resistance.
13/14. Ground resistance current output
Output 3-30A AC current
4.2 JK7123 rear panel structure
4.2.1 Schematic diagram of JK7123 rear panel
