Measuring Current - Fluke 8846A/C User Manual

8845A/8846A
Users Manual
Function modifiers:
Refer to the "Range Keys" section in Chapter 3 of this manual for information on how to
adjust the measurement range.

Measuring Current

The Meter is capable of making both ac and dc current measurements up to 10 A. Two
separate input connectors, in conjunction with the LO connector, are used for current
measurements. For best resolution, current measurements not exceeding 400 mA should
be made using the LO and mA input connectors as shown in Figure 4-4.
To avoid blowing the current input fuse or possibly damaging
the Meter:
•
•
•
4-10
Figure 4-3. Input Connections for 4-wire Ohms Using 2x4 Wire Leads
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's label is highlighted.
Current measurements between 400 mA and 10 A should be
measured using only the 10 A and LO input connectors.
BEFORE applying power to the circuit to be measured,
ensure the test leads are correctly connected to the Meter
inputs appropriate for the expected current.
Exceeding 440 mA on the 400 mA input connector or
exceeding 11 A on the 10 Amp connector will blow the
internal fuse.
Ground tab
W Caution
INPUT SENSE
V 4 W
2W/4W
2
HI HI
1000 V CAT I
300V
600V CAT II
LO LO
1V
FUSED
4 00
10A
mA
REAR FRONT
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