HP 4155A, Руководство пользователя по задачам

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Making a Measurement
Connection to Device Under T est (DUT)
T o Make Connections to Measure Low Resistance (F or
HP 4156A Only)
Connect force and sense terminals of SMU as close as possible to the DUT .
When you measure a low resistance , high current ows through the DUT .
This high current increases the measurement error caused by the residual
resistance of cables and contacts . T o cancel the eect of this resistance , you
can use Kelvin connections (4-wire), which means the force and sense lines
are extended separately to the DUT .
Example The following example connection can be used to measure low resistance .
The sense point of the voltage measurement is at the contact pad, so the
voltage due to the residual resistance between the instrument and the sense
point is canceled.
T o reduce the leakage current, use coaxial cables to connect the connector
plate to the probing needle .
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