Keithley Interactive SourceMeter 2450 User Manual page 40

Model 2450 Interactive SourceMeter® Instrument User's Manual
You can use either the front-panel or the rear-panel terminals for this application. The following
figures show the physical connections for the front and rear panels. Note that you must use either the
front-panel terminals or rear-panel terminals — you cannot mix connections.
The rear-panel connections are triaxial. The front-panel connections are safety banana jacks.
Turn the power to the instrument off before attaching connections to the Model 2450.
When you connect the leads to the device under test (DUT), notice that the FORCE LO and SENSE
LO connections are attached to one of the DUT leads. Make the FORCE HI and SENSE HI
connections to the other lead. Connect the sense connections as close to the resistor under test as
possible. This 4-wire measurement eliminates the resistance of the test leads in the measurement.
The figure below shows the front-panel connections. You can make these connections with four
insulated banana cables, such as two sets of the Keithley Instruments Model 8608 High-Performance
Clip Lead Set.
The figure below shows the rear-panel connections. You can make these connections with four
triaxial cables.
2450-900-01 Rev. C / December 2013
Figure 18: Front-panel connections for low-resistance measurements
Figure 19: Rear-panel connections for low-resistance measurements
Section 5: Measuring low-resistance devices
5-3