Model 2450 Interactive SourceMeter® Instrument User's Manual
Section 5: Measuring low-resistance devices
2450-900-01 Rev. A / June 2013
5-3
The physical connections for the front and rear panels are shown in the following figures. Note that
you must use either the front terminals or rear terminals — you cannot mix connections.
The rear-terminal 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. The FORCE HI and SENSE HI connections
are made 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 (for example, two sets of the Keithley Instruments Model 8608 High
Performance Clip Lead Set).
Figure 17: Front-panel connections for low resistance measurements
The figure below shows the rear-panel connections. You can make these connections with four
triaxial cables.
Figure 18: Rear-panel connections for low resistance measurements
