OPERATION 
81 
Setting Contact Check – GPT-12XXX/15XXX 
 
The CONTACT CHK function is used to 
determine if open circuit or short circuit occurs 
between the test leads and DUT under the 
ACW, DCW and IR tests. Before activating this 
function, it is first required to define a reference 
value along with relevant thresholds, for which 
refer to page 177. 
CONTACT CHK setting is applicable to ACW, DCW 
and IR test modes for both GPT-12XXX and GPT-
15XXX, whereas it is only applicable to DCW test 
mode for GPT-15012 unit. 
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.