GPT-9000 Series User Manual 
68 
4.  The ZERO function can be 
activated by pressing the 
corresponding soft-key in the 
READY status. The ZERO soft-key 
will be highlighted. 
5.  Press the START button to perform 
the zero check. The tester will go 
into the ZERO status. 
0
   
3 01
A 
Z E R 0 I R   G B  A C W D CW
  
E         
 F R E Q =   0 H z  6                      
REZ
 
    G B V = 0 . 6 2 2 V   MT I E = 0 0 3 . 2 SR
. 0 m ΩER F =# 0 00
0 0 . 0 m ΩIH ES = 3T
                    
 
MM A UN N A_2M A N U = * * * - 0 0  
 
O
Measured Resistance
200 7
m Ω 
ZERO status
6.  When the zero check has finished, the tester 
will return back to the VIEW status. The 
resistance of the test leads will be automatically 
set as the Reference value.  
0
   
3 01
A 
        I R   G B  A CW D C W
  
E         
 F R E Q =   0 H z  6                      
EIV
 
    G B V =           V   MT I E = 0 0 3 . 2 SR
. 7 m ΩER F =# 0 02
0 0 . 0 m ΩIH ES = 3T
                    
 
MM A UN N A_2M A N U = * * * - 0 0  
 
W
       
m Ω 
Reference value
Remember to replace the test leads to the proper 
position on the DUT before testing.