Amprobe ACD-14 PLUS, User Manual

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9
FEATURES
HOLD

/ MAX

The HOLD feature freezes the display when the button is pressed. The MAX feature
compares and displays the measured maximum value as fast as 30ms with auto-ranging
capability.
HOLD
Press the HOLD button momentarily toggles to hold mode for the ACA function. To
release the HOLD feature momentarily press the HOLD button.
MAX
Press the HOLD button for 1 second or more activates the MAX HOLD feature for the
ACA function. To release the MAX HOLD feature press the HOLD button for 1 second or
more.
Auto Power Off (APO)
When the meter is on, the Auto Power Off (APO) feature will switch the meter into a
sleep mode automatically to extend battery life after approximately 30 minutes of no
slide-switch nor push button operations. To wake up the meter from APO, press the
buttons momentarily or set the slide-switch to the OFF position and then slide back on
again. Always set the slide-switch to the OFF position manually when the meter is not in
use.
MAINTENANCE

WARNING
To avoid electrical shock, disconnect the meter from circuit, remove the test leads from
the input jacks and turn OFF the meter before opening the case. Do not operate the
meter with open case.
Trouble Shooting
If the instrument fails to operate, check batteries and test leads etc., and replace as
necessary. Double check operating procedure as described in this user’s manual.
The voltage and resistance measurement circuits are protected by fusible resistors and
a parallel high resistance path. If the instrument voltage-resistance input terminal has
been subjected to high voltage transients (caused by lightning or switching surges in the
system), the series fusible input resistors will open like fuses and the voltmeter will read
approximately 85% of the actual value and cause the resistance range to not work. The
meter voltage reading (approximately 15% low) will let the user know that the meter has
been damaged, and the circuit under test is active.