Extech Instruments EX530A Quick Start Manual page 5

METER POWER
The meter is powered by one 9 V battery. The compartment is lo-
cated on the back of the meter (under the tilt stand) secured by the
two black Phillips screws. The meter automatically switches off after
approximately 15 minutes.
FEATURES
Automatic and Manual Range
In the current, voltage, resistance, and capacitance modes, the me-
ter automatically selects the optimum range. To use manual range,
press the RANGE button, subsequent presses will step through the
ranges. Long press RANGE to return to the Auto range mode.
Data Hold
To freeze the displayed reading, press the HOLD button, the HOLD
icon will appear. Press the HOLD button to return to normal
operation.
Maximum and Minimum Readings
Press the MAX/MIN button to toggle the maximum and minimum
reading displays. The MAX and MIN display icons show the se-
lected mode. Long press the MAX/MIN button to exit.
PEAK Readings
Press the PEAK button, the PEAK MAX icon will appear, and the
reading will show the captured maximum signal. Press again to
show the minimum signal (PEAK MIN). Press again to view the
MAX minus the MIN (PEAK MAX MIN). Long press the PEAK but-
ton to exit.
Relative (REL) Mode
The Relative feature allows you to make measurements relative to
a stored reference. The displayed value is the difference between
the reference and the measured value.
Press the REL button to store the reference (REL will appear). The
display will now indicate the difference between the stored value
and the measured value. Press REL to exit.
Low Pass Filter (LPF)
Long press the LPF button to engage/disengage the low pass filter
circuit. Use LPF when measuring voltage on variable frequency
drives (VFD).
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