Radio Shack 22-812 - Page 3

A Word About Safety
3
apply more than 1000V DC or 750V RMS AC
between the input jacks and ground.
• Use extreme caution when working with
voltages above 100V. Always disconnect
power from the circuit you are measuring
before you connect test leads to high-voltage
points.
• Never connect the test leads to a voltage
source when you set the meter’s function
selector to
–
––
–
/
„
„„
„
,
•
••
•
, LOGIC/Hz, /
µ
µµ
µ
A/A
, or
/ mA/A.
• Always discharge any capacitors of the circuit
under test before you attach test leads.
• Always turn off power and disconnect the test
leads from the circuit you are testing before you
replace the meter’s battery or fuse.
• Never operate the meter unless its back cover
and battery cover are in place and fully closed.
• This equipment is rated for installation category
II (maximum 3600VA).
• Because many AC/DC sets have a potentially
hot chassis, be sure the top of your workbench
and the floor underneath it are made of non-
conductive materials.
This meter is fully calibrated and tested. Under
normal use, no further adjustment should be
necessary except as noted in this Owner’s Manual.
If the meter requires repair, do not try to adjust it
yourself. Take it to your local RadioShack store.
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(continued)
Checking Continuity ... 23
Checking Diodes ........ 24
Measuring Logic ......... 25
Measuring
Frequency/
Duty Cycle/
Pulse Width ................ 25
Measuring hFE ........... 27
Using the Meter
With a Computer ............ 28
Installing the Meter’s
Software/Hardware ..... 28
Configuring/Using the
Meter and Software .... 29
Care and Maintenance .. 30
Cleaning ..................... 30
Replacing the Fuses ... 30
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• Use extreme caution in
the use of this device.
improper use of this
device can result in
injury or death. Follow all
safeguards suggested in
this owner’s manual, in
addition to normal safety
precautions, in dealing
with electrical circuits.
Do not use this device if
you are unfamiliar with
electrical circuits and
testing procedures.
• Never try to probe with
both test leads at the
same time or hold both
test leads in one hand.
(continued)
22-812.fm Page 3 Monday, April 8, 2002 1:32 PM