Radio Shack 22-218 User Manual
Cat. No.
22-21 8
OWNER’S MANUAL
Please read before using this equipment.
8-Range Multitester
FEATURES
Your Radio Shack 8-Range Multitester is a perfect addit ion to
your workshop. It is designed with a precision meter movement to avoid m echani cal shock damage. Thi s comp act-si zed
pocket meter accurately measures AC and DC voltages, DC
current, and r esistance.
It also passes the critical safety test required by Underwriters
Laboratories for test equipment, and its 2000 ohm/volt sensitivity ensures an accurate reading.
©
1995 Tandy Corporation.
Radio Shack is a registered trademark used by Tandy Corporation.
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All Rights Reserved.
Cautions:
• Read this manual complet ely before you use the meter.
• If you are not familiar with meters and testing procedures, we suggest that you read a book about the subject, 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 p rec aution in desi gning this m eter to ensure that i t is as safe a s possible. But safe operation d epends
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 termin al 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-voltage 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 chassis, 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 requi re repair, do not try to adjust it yourself. Take it to
your nearest Radio Shack st ore. Ser vice by unauthor ized pe rsonnel voids the warranty.
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WARNING: USE EXTREME CAUTIO N IN USE OF THIS DEVICE. IMPROPER USE OF THIS DEVICE CAN RESULT IN
INJURY OR DEATH. FOLLOW ALL SAFEGUARDS SUGGESTED 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 R e qu i re m e n ts ...... ....... ... .. ....... ... ............... .. .. ..1.5 Volts
Dime nsio ns...... ... .. ........ .. ............... .. .. 3
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/8 ¥ 21/2 ¥ 11/4 Inches
(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.
500V
MAX
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To avoid electric shock or damage to the meter,
do not connect t he g round te rminal to any so urc e
of more than 500 volts with respect to earth
ground.
Be extra carefu l when you ta ke measur ements fo r
high voltage. Do not touch the meter’s test probe
ends.
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INSTALLING A BATTERY
Your meter uses on e AA battery f or power. We r ecommend an
alkaline battery, such as Radio Shack Cat. No. 23- 552/557.
WARNINGS:
• TO AVOID ELECTRIC SHOCK, DISCONNECT BOTH
TEST LEADS FROM ANY EQUIPMENT BEFORE YOU
REMOVE THE BATTER Y.
• DO NOT OPERATE THE METER UNTIL YOU
REPLACE THE BATTERY AND CLOSE THE BACK
COVER.
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