Keithley 2450 User Manual

Model 2450
Interactive SourceMeter® Instrument Reference Manual Section 2:
General operation
2450-901-01 Rev. B/September 2013 2-79
Accuracy of 2-wire resistance measurements
The 2-wire sensing method has the advantage of requiring only two test leads. However, as shown in
the following figure, the total lead resistance is added to the measurement. This can seriously affect
the accuracy of 2-wire resistance measurements, particularly with lower resistance values.
Figure 51: Two-wire resistance sensing for high impedance DUT
Measured resistance:
Actual resistance:

Keithley 2450 Specifications

General

Model	2450
Category	SourceMeter
Voltage Source Range	±200 V
Current Source Range	±1 A
DC Voltage	200 V
DC Current	1 A
Power Output	20 W
Resolution	6.5 digits
Display	5-inch capacitive touchscreen
Operating Temperature	0°C to 50°C
Connectivity	USB, LAN, GPIB
Dimensions	213 mm × 88 mm × 370 mm