Making A Four-Wire Resistance Measurement - Fluke 8845A User Manual

8845A/8846A
Users Manual

Making a Four-Wire Resistance Measurement

The Meter incorporates two methods of making a four-wire resistance measurement. The
traditional method is to use four meter leads to connect the Meter to the resistance to be
measured. The optional 2X4 Wire test leads simplifies the four-wire measurement so you
only have to plug in two test leads to the Input HI and LO connectors of the meter.
To make a four-wire resistance measurement using four test leads:
1. Connect the test leads to the Meter's input connectors as show in Figure 4-2.
2. Press N.
3. If not already highlighted as shown above, press the 4WIRE soft key to switch to a
To make a four-wire resistance measurement using Fluke's 2X4 test leads:
1. Connect the test leads to the Meter's input connectors as show in Figure 4-3.
2. Press N.
3. If not already highlighted, press the 2X4WIRE soft key.
4-8
0.217384
F1
four-wire measurement.
Figure 4-2. Input Connections for 4-Wire Resistance Measurements
F2 F3 F4
4
W
F5
INPUT SENSE
V 4 W
2W/4W 2
HI HI
1000 V CAT I
300V
600V CAT II
LO LO
1V
FUSED
100
10A
mA
REAR FRONT
caw031.eps
caw023.eps