Owon XDM Series User Manual

4.Measurement Tutorial
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4. Measurement Tutorial
Loading Errors (DC Voltage)
Measurement loading errors occur when the resistance of the DUT(Device-Under-Test) is
an appreciable percentage of the multimeter's input resistance, as shown below.
HI
LO
Ideal
Meter
R
s
V
s
R
i
V
s
= ideal DUT voltage
R
s
= DUT source resistance
R
i
= multimeter input resistance (10 MΩ or >10 GΩ)
Error
is
s
100 R
()
RR
%
×
=
+
To reduce the effects of loading errors and to minimize noise interference, set the
multimeter's input resistance to 10 GΩ for the 200 mVDC and 2 VDC ranges. The input
resistance is maintained at 10 MΩ for the 20 VDC, 200 VDC, and 1000 VDC ranges.

Owon XDM Series Specifications

General

Brand	Owon
Model	XDM Series
Category	Measuring Instruments
Language	English