Default
The default input resistance for all measurements is 10M Ω. Please
refer to
Table 2-1
on
page 24. The DC input resistance can only be
changed for measurements with 100mV, 1V or 10V range. For 100V
DCV, 1000 V DCV and other measurement functions, the input
resistance is fixed at 10M Ω and can not be changed. Also note that
the user selected value is stored in a volatile memory. The default
setting will be restored after the meter has been turned off.
How to set the DC input resistance
You can set the DC input resistance either through the front panel
operation or through the remote interface operation.
Front Panel Operation
Press DCV , and then use
◁
and
▷
buttons to locate “INPUT
R” option. Press ENTER to select it. Then select desired value for the
input resistance by pressing
◁
or
▷
button. Press ENTER to choose it.
Two values are available: 10M Ω or > 10G Ω. The locations of these
buttons are shown with red rectangle frames in
Figure 4-4
.
Figure 4-4
Remote Interface Operation
The automatic input resistance mode can be enabled / disabled. With
AUTO OFF (default), the input resistance is fixed at 10MΩ for all
ranges. With AUTO ON, the input resistance is set to >10GΩ for the
three lowest DC voltage ranges (100mV, 1V and 10V). Use the
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