User manual

DMM4020
Users Manual
3-12
4-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 perform a 4-wire resistance measurement using four test leads:
1. Connect test leads between the Meter and the circuit under test as shown in
Figure 3-6.
2. If required, press O to select 4-wire resistance measurement mode. 4 Wire is
displayed.
The function and measurement are displayed.
2
2
HI
LO
1000V
750V
2W/4W
MAX
INPUT SENSE
HI
LO
4 W
10 A
mA
200mA
MAX
10 A
MAX
1000V CAT I
600 V CAT II
500 V pk
V
1V
300V
eue12.eps
Figure 3-6. 4-Wire Resistance Measurement