10
Auto-ranging
When there is more than one measuring range under a selected meter function, the
LED annunciator “
a
” turns on in the upper left corner. The meter will automatically
switch to the best resolution range when making measurements. No manual ranging
selection is required.
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 the
last front panel activity. To wake up the meter from APO, press the buttons
momentarily or move the slide-switch to the OFF position and then back on again.
Always set the slide-switch to the OFF position manually when the meter is not in use.
5) 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
with open case.
Trouble Shooting
If the instrument fails to operate, first check the batteries and test leads etc., and
replace as necessary. Double check the operating procedures as described in this
User’s Manual.
If the instrument voltage-resistance input terminal is subjected to a high voltage
transient (e.g. lightning or switching surge) by accident or abnormal conditions of
operation, the series fusible resistors will be blown (become high impedance) like fuses
to protect the user and the instrument. Most measuring functions through this terminal
will then be an open circuit. A qualified technician should then replace the series fusible
resistors and the spark gaps. Refer to the LIMITED WARRANTY section for obtaining
warranty or repair service.
Cleaning and Storage
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 60 days, remove
the batteries and store them separately.
