9
c. Press , , and then press to configure to use 4-wire
connection.
d. Press Ch1 to turn on Channel 1 Output relay.
e. Press to perform a single point measurement.
4. Compare two results
a. Compare two results to see the effect of 4-wire connection. The result with
4-wire connection is 1 Ohm, while the one with 2-wire connection is 1.6 Ohm.
The difference, that is 0.6 Ohm, should be the residual lead resistance on the
measurement cables.
LAB 2: Make an Accurate Low Resistance Measurement (continued)
(3) Press OK
(2) Press 2-WIRE
(1) Press
High Force
Low Force
B2901/02/11/12A
R
DUT
R
Lead
R
Lead
V
Meas
I
Source
a) Result with 2-wire connection b) Result with 4-wire connection
High Force
Low Force
Low Sense
High Sense
B2901/02/11/12A
V
Meas
I
Source
R
DUT
R
Lead
A
B
The result with 2-wire connection includes the residual lead resistance R
Lead
.
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