RIGOL 
©  2007 RIGOL Technologies, Inc.  
  User‟s Guide for DM3000 Series 
DC Input Impedance 
The options of input resistance for DC value measurements are 10MΩ and >10GΩ. 
For 200mV, 2V, 20V measuring ranges, choose >10MΩ for better result. 
Press     Res, enter the menu shown below: 
 
Figure 2- 3 
 
                Table 2- 4 DC Input Resistance Menu Description 
Set up the DC Input Impedance to 10MΩ. 
Set up the DC Input Impedance to >10GΩ. 
Save all changes, back to a higher level menu. 
 
DC input resistance selection: 
(1). While the DC input resistance is selected to 10MΩ, the input resistance of all 
measurement range is 10MΩ; 
(2). While the DC input  resistance is  selected  to >10GΩ,  the input resistance  for 
200mV,  2V  and  20V  measurement  range  is  >10GΩ;  for  200V  and  1000V 
measurement range is kept at 10MΩ.