Maintenance - Amprobe ACD-15 Pro User Manual

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• Press SELECT button momentarily AGAIN selects Capacitance function.
Capacitance measurement time varies with capacitance value. Only a few
seconds is required for measuring values of below 100μF. However, one
minute or more is required for measuring extreme values of around 2000μF.
HOLD � feature
The Hold feature freezes the display for later viewing. Press the HOLD �
button momentarily to toggle to the Hold feature. The symbol "�" appears.
Backlighted display (model ACD-15 TRMS Pro only)
Press the SELECT button for 1 second or more to turn on or off the display
backlight feature.
Auto Power Off (APO)
The meter turns off intelligently after approximately 3 minutes of neither
significant measurement nor button/switch activity. To wake up the meter from
APO, press any button or turn the rotary selector to OFF and back on again.
Always turn the rotary selector to OFF when the meter is not in use.

MAINTENANCE

WARNING
To avoid electrical shock, disconnect the meter from any circuit, remove the test
leads from the input jacks and turn OFF the meter before opening the case. Do
not operate w ith open case.
Trouble Shooting
If the instrument fails to operate, check batteries and test leads etc., and
replace as n ecessary. Double check operating procedure as described in this
user's manual. If the instrument voltage-resistance input terminal was subjected
to high voltage transient (caused by lightning or switching surge to the system)
by accident or abnormal conditions of operation, the series fusible resistors will
be blown (become high impedance, open) like fuses to protect the user and the
instrument. Most measuring functions through this terminal will then be open
circuit. The series fusible resistors and the spark gaps should then be replaced
by qualified technician. Refer to the LIMITED WARRANTY section for obtaining
warranty or repairing service.
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