Fluke 8845A FE 8845A & 8846A Users Manual - Page 73

Measuring AC Current

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4 Making Measurements Measuring Current 0.0086 F1 F2 F3 F4 F5 caw09f.eps 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 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. 2ND MEAS Cycles the secondary display through the measurement functions 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. 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. 0.0333uA~ F1 F2 F3 F4 F5 caw08f.eps 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 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 4-11

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Making Measurements
Measuring Current
4
4-11
0.0086
F1
F2
F3
F4
F5
caw09f.eps
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
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.
2ND MEAS
Cycles the secondary display through the measurement functions
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.
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
.
0.0333
uA
~
F1
F2
F3
F4
F5
caw08f.eps
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
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