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Operation
NOTICE: Read and understand all warning and caution
statements listed in the safety section of this operation manual
prior to using this meter.
AC/DC Voltage Measurements
1.
Connections are made through the test lead terminals.
2.
Insert the black test lead into the negative COM jack and
the red test lead into the positive
3.
Slide the function switch to the "V" position. Press the
SELECT key momentarily to toggle between ACV and
DCV.
4.
Read the voltage measurement on the display.
Note: The 400mVDC range has 1000MΩ input impedance for
the least current drain in small signal measurements. Also, the
non-zero reading experienced when the test leads are open is
normal.
AC Clamp-on Current Measurements
CAUTION: Do not make current measurements above 350A for
longer than 60 seconds. Exceeding 60 seconds may cause
damage to the meter.
1.
For the MA400 and MA420, slide the function switch to the
ACA position. For the MA440/MA460+, press the Clamp
Power button.
2.
Press the jaw trigger and clamp on a single conductor (fully
enclosing it; do not allow a gap to open between the two
halves of the jaw).
3.
Read the current measurement on the display.
uA AC/DC Current Measurements (MA440 & MA460+ only)
1.
uA Measurements are made through the test lead
terminals.
2.
Insert the black test lead to the COM terminal and the red
test lead to the
3.
Slide the function switch to the "uA" position.
4.
Press the SELECT button to choose AC or DC current.
5.
Connect the test leads in series with the circuit under test.
6.
Read the current measurement on the display
terminal.
MA Series V2.0 7/02
11
jack.
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