Extech Instruments EX820A Quick Start Manual page 5

Short press to switch to the manual range and then to step
through the available ranges. Long press to return to Auto range.
Short press to select an alternate mode for the selected function.
For example, to select AC or DC when measuring voltage.
Short press to toggle the Maximum and Minimum readings. Long
press to exit.
METER POWER
The meter is powered by one 9 V battery. The compartment is lo-
cated on the back of the meter. The meter automatically switches
off after approximately 15 minutes.
FEATURES
Automatic and Manual Range
In the voltage, resistance, capacitance, and frequency functions,
the meter automatically selects the optimum range. To use manual
range, press the RANGE button, subsequent presses will step
through the available ranges. Long press RANGE to return to Auto
range.
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 Max and Min
When measuring voltage and current, press the PEAK button to ac-
tivate peak capture. The PMAX icon will appear and the display will
show the measured signal's positive peak. Press PEAK again to
step to PMIN, the display will show the negative peak. Press PEAK
to exit.
Low Pass Filter (LPF)
To introduce a low pass filter when measuring AC voltage, long
press the LPF button. Long press again to exit. Use this feature
when measuring variable frequency drive (VFD) equipment.
#NAS100186; r. AE/96720/98047; en-US
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