®
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In other words, the meter will intelligently avoid entering the APO
mode when it is under normal measurements. To wake up the
meter from APO, press the
SELECT
button momentarily and
release, or turn the rotary switch OFF and then back on. Always turn
the rotary switch to the OFF position when the meter is not in use.
V. MAINTENANCE :
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 with open case.
WARNING :
If the instrument fails to operate, check batteries and test leads etc.,
and replace as necessary. Double check operating procedure as
described in this manual.
Trouble Shooting :
If the instrument voltage-resistance input terminal has subjected to
high voltage transient (caused by lightning or switching surge to the
system under test) by accident or abnormal conditions of operation,
the protective impedance components in series might be blown off
(become high impedance) like open fuses to protect the user and
the instrument. Most measuring functions through this terminal
might then be open circuit. Such components should only be
replaced by qualified technician. Refer to the WARRANTY section
for obtaining warranty or repairing service.
Intelligent Auto-Power-Off (APO) :
The Auto-Power-Off (APO) mode turn the meter off automatically to
extend battery life after approximately 32 minutes of no specified
activities, where applicable :
1. Rotary switch or push button operations.
2. Significant measuring readings of above 8.5% of ranges.
3. Non-OL readings for Resistance, Continuity or Diode function.
4. Non-zero readings for Hz function.
5. Significant movement indication as in Phase Rotation functions.
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Periodically wipe the case with a damp cloth and mild detergent; do
not use abrasives or solvents. If the meter is not to be used for
periods of longer than 30 days, remove the batteries and store them
separately.
Cleaning and Storage :
Battery replacement :
The meter uses standard 1.5V AAA Size (IEC R03) battery X 2.
Loosen the 2 captive screws from the battery cover case. Lift the
battery cover case. Replace the batteries. Replace battery cover
case. Re-fasten the screws.
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