OPERATION 
71 
Zero Check for the Test Leads 
 
The Zeroing function is used to determine the 
resistance of the test leads for GB and CONT 
tests. When a ZERO CHECK is performed, the 
reference is automatically set to the measured 
resistance of the test leads.  
ZERO CHECK setting is only applicable to both GB 
and CONT tests.  
1.  Short the positive and negative alligator clips as 
shown below. 
2.  Press the PAGE soft-key to move to 
the 2/2 page where ZERO CHECK 
setting appears for GB testing. 
As for CONT, ZERO CHECK setting 
shows in the 1/1 page directly. 
3.  Press the UP / DOWN arrow soft-
keys to bring the cursor to the ZERO 
CHECK setting. When selecting ON, 
the ZERO CHECK indicator will be 
shown on the display.