Tektronix KEITHLEY 2600B Series User Manual

Section 2: Sourcing and measuring Series 2600B System SourceMeter® instrument Reference Manual
2-18 2600BS-901-01 Rev. F/August 2021
Figure 9: Two-wire resistance sensing
The 4-wire sensing method, as shown in the following figure (4-wire resistance sensing), minimizes or
eliminates the effects of lead resistance by measuring the voltage across the resistor under test with a
second set of test leads. Because of the high input impedance of the voltmeter, the current through
the sense leads is negligible, and the measured voltage is essentially the same as the voltage across
the resistor under test.

Tektronix KEITHLEY 2600B Series Specifications

General

Brand	Tektronix
Model	KEITHLEY 2600B Series
Category	Measuring Instruments
Language	English