Measuring Ac Current - Fluke 8845A User Manual

3. With the test leads connected to the 100 mA and Input LO connectors, press the mA
soft key as shown above, if not already highlighted. If the test leads are connected to
the 10A and Input LO connectors, then press the 10A soft key.
4. Apply power to the measured circuit and read the current in the Meter's display.
Function modifiers:
FILTER
2ND MEAS Cycles the secondary display through the measurement functions

Measuring AC Current

To measure ac current:
1. Connect the test leads between the Meter's input connectors and the measured circuit
as shown in Figure 4-4 or Figure 4-5, based on the anticipated level of current.
2. Press K.
3. With the test leads connected to the 100 mA and Input LO connectors, press the mA
soft key as shown above, if not already highlighted. If the test leads are connected to
the 10A and Input LO connectors, then press the 10A soft key.
4. Apply power to the measured circuit and read the current in the Meter's display.
Function modifiers:
Filter
0.0086
F1 F2 F3
An 8 Hertz low-pass filter for rejecting noise and signals above 8 Hz
is inserted to stabilize measurements. The filter is active when this soft
key label is highlighted and will increase stabilization time or the
measurement.
listed below, and then off. When a second measurement function is
selected, the 2ND MEAS soft key label is highlighted.
IAC - Displays the ac current riding on the dc current measurement.
0.0333
F1 F2 F3
Displays the filter menu. For best accuracy and stable readings,
choose a filter based on the lowest frequency to be measured.
3HZ SLOW Provides higher measurement accuracy on ac signals
between 3 Hz and 20 Hz. However, the measurement
Making Measurements
F4 F5
~
uA
F4 F5
4
Measuring Current
caw09f.eps
caw08f.eps
4-11