OPERATION 
33 
AC/DC Voltage Measurement 
The GDM-8342/8341 can measure from 0 to 750VAC or 0 to 
1000VDC, however the CATII measurement is only rated up to 
600V.  
 
Set to ACV/DCV 
Measurement 
1.  Press the DCV or ACV key to measure DC or 
AC voltage.  
For AC + DC voltage, press the ACV and DCV 
keys at the same time. 
2.  The mode will switch to AC, DC or AC+DC 
mode immediately, as shown below.  
AC & DC 
indicator
Voltage 
units 
Measurement 
range
V
SDC
AC
Connect the test lead between the V and the 
COM terminal. The display updates the 
reading. 
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