Making A Two-Wire Resistance Measurement; Making A Four-Wire Resistance Measurement - Fluke 8846A/C User Manual

8845A/8846A
Users Manual
will source current through the INPUT HI and LO terminals and use the SENSE HI and
LO to measure the resistance.

Making a Two-wire Resistance Measurement

To make a two-wire resistance measurement:
1. Connect the test leads to the Meter's input connectors as shown in Figure 4-1.
2. Press N.
3. If not already highlighted as shown above, press the 2W 2WX4W soft key.
Function modifiers:
Refer to the "Range Keys" section in Chapter 3 of this manual for information on how to
adjust the measurement range.

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 front-panel 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 shown in Figure 4-2.
2. Press N.
4-8
0.206220
F1
A filter for quieting noisy measurments. This filter averages readings
D FLTR
to reduce reading noise when in immedicate trigger mode or when in
trigger mode with an unending number of triggers selected. The filter
is only available for dc functions at rates slower than 1 PLC. The
number of readings averaged by the digital filter varies with dc
function and range.
A 3-pole analog filter for improving noise immunity. The filter is
A FLTR
active when this soft key label is highlighted and will increase
stabilization time of the measurement. See Appendix D for more
information on when to use the analog filter.
For best results, the filter may require zeroing during the
ohms function.
F2 F3 F4
Note
M Ω
F5
caw030.eps