Agilent Technologies 34420A User Manual

Loading Errors Due to Input Resistance (dc volts)
Measurement loading errors occur when the resistance of the device-
under-test (
DUT) is an appreciable percentage of the meter’s own input
resistance. The diagram below shows this error source.
V
s
= Ideal DUT voltage
R
S
= DUT source resistance
R
i
= Meter input resistance
(10 MΩ or > 10 GΩ )
Error (%) =
100 x R
S
R
S
+ R
i
Ideal
Meter
7
Chapter 7 Measurement Tutorial
Measurement Techniques and Sources of Error
255

Agilent Technologies 34420A Specifications

General

Brand	Agilent Technologies
Model	34420A
Category	Multimeter
Language	English