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4-Wire Resistance
Note
The NI 4050 does not support 4-wire resistance measurements.
NI Digital Multimeters Getting Started Guide
4-wire resistance measurements use both pairs of terminals, which allows
you to measure low resistances accurately by eliminating the effects of lead
resistance.
N
A
T
I
O
N
A
L
I
N
S
T
R
U
M
E
N
TS
HI
V
250V
Input
Max
LO
!
HI
250V
mA /
Max
200mA
4W
Max
Sense
LO
AUX I/O
5V
Max
Figure 12. NI 4060/4070 Signal Connections for 4-Wire Resistance Measurements
N
A
I
N
S
NI PXI-4070
6½-Digit FlexDMM
300 V
MAX
CAT II
1 A
250 V
MAX
300 V
MAX
CAT II
AUX I/O
5V
MAX
20
T
I
O
N
A
L
T
R
U
M
E
N
TS
HI
INPUT
VΩ
LO
AMPS
HI
SENSE
Ω 4W
LO
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