OPERATION 
83 
Setting Contact Check – GPT-15012 
 
The CONTACT CHK function is used to 
determine if open circuit occurs between the 
test leads and GPT-15012 under the DCW test.  
1.  Press the PAGE soft-key to move to 
the 3/3 page where CONTACT 
CHK setting appears for ACW, 
DCW and IR tests. 
2.  Press the UP / DOWN arrow soft-
keys to bring the cursor to the 
CONTACT CHK and turn it ON. 
3.  Press the UP/DOWN arrow soft-
keys to move the cursor to the Low 
Limit setting followed by using 
scroll wheel to determine an exact 
scale of Low Limit threshold that 
triggers the OPEN status warning.