Radio Shack 22-218 Manual de usuario
Cat. No. 22-218
OWNER’S MANUAL
Please read before using this equipment.
8-Range Multitester
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FEATURES
Your Radio Shack 8-Range Multitester is a perfect addition to
your workshop. It is designed with a precision meter move-
ment to avoid mechanical shock damage. This compact-sized
pocket meter accurately measures AC and DC voltages, DC
current, and resistance.
It also passes the critical safety test required by Underwriters
Laboratories for test equipment, and its 2000 ohm/volt sensi-
tivity ensures an accurate reading.
©1995 Tandy Corporation.
All Rights Reserved.
Radio Shack is a registered trademark used by Tandy Corporation.
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Cautions:
• Read this manual completely before you use the meter.
• If you are not familiar with meters and testing proce-
dures, we suggest that you read a book about the sub-
ject, such as “Using Your Meter” (Radio Shack Cat. No.
62-2039).
Note: You need one AA battery (not supplied) to power your
multitester.
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A WORD ABOUT SAFETY
We have taken every precaution in designing this meter to en-
sure that it is as safe as possible. But safe operation depends
on you, the operator. We recommend that you follow these
simple safety rules:
• Never apply voltages to the meter that exceed the limits
given in the specifications. Never apply more than 1000V
DC or AC between any input terminals, or between an
input terminal and ground.
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• Use extreme caution when you work with voltages above
40V. Always disconnect power from the circuit you are
measuring before you connect test probes to high-volt-
age points.
• Never connect the test probes to a source of voltage
when you select the Rx1K W or 150mA DC function.
• Always discharge filter capacitors in the power supply of
the circuit under test before you attach test probes.
• Always turn off power and disconnect the test leads
before you replace the batteries.
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• Never operate the meter unless the battery cover is in
place and fully closed.
• Because many AC/DC sets have a potentially hot chas-
sis, be sure the top of your workbench and the floor
underneath it are made of non-conductive materials.
The multitester is fully calibrated and tested. Under normal
use, no further adjustment should be necessary. If the meter
should require repair, do not try to adjust it yourself. Take it to
your nearestRadio Shack store. Service by unauthorized per-
sonnel voids the warranty.
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WARNING: USE EXTREME CAUTION IN USE OF THIS DE-
VICE. IMPROPER USE OF THIS DEVICE CAN RESULT IN
INJURY OR DEATH. FOLLOW ALL SAFEGUARDS SUG-
GESTED IN THE 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. NOT FOR COMMERCIAL
OR INDUSTRIAL USE.
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SPECIFICATIONS
Ranges
AC Voltage ................................................ 15V, 150V, 1000V
DC Voltage ................................................ 15V, 150V, 1000V
DC Current .................................................................150 mA
Resistance ...............................100K ohm (Center 3.5K ohm)
Accuracy
DC..............................................................± 3% of Full Scale
AC .............................................................± 4% of Full Scale
Resistance .....................................± 3% at Full Scale Length
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Sensitivity
AC Voltage .......................................................2000 ohm/Volt
DC Voltage ......................................................2000 ohm/Volt
Operating Temperature......................... 32–109.4°F (0–43°C)
Storage Temperature ......................... –4–140°F (–20–60°C)
Power Requirements.................................................1.5 Volts
Dimensions........................................ 37/8¥ 21/2¥ 11/4Inches
(98 ¥ 64 ¥ 32 mm) (HWD)
Weight.................................................Approx. 3.7 oz. (105 g)
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SPECIAL PANEL MARKINGS
We have added special markings to the panel to remind you
of the meter’s measurement limitations and important safety
precautions.
Follow the operating instructions given in this
owner’s manual.
To avoid electric shock or damage to the meter,
do notconnect the ground terminalto any source
of more than 500 volts with respect to earth
ground.
!
500V
MAX
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