Radio Shackメーカー22-218の使用説明書/サービス説明書
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Cat. No. 22- 218 OWNER’S MANUAL Pl ease read bef o re usi n g thi s eq ui pme nt. 8-Range Multitester 22- 218. fm P age 1 Fri day, Au gust 6 , 19 99 1 1:44 AM.
2 FEA TURES Your Radi o Shack 8- Range Mult itest er is a per fect add ition t o your workshop. It is des igned wi th a preci sion met er move- ment to avoi d mecha nical shock damage. Thi s co mpact -size d pocket m e ter a ccurat ely mea sures AC and DC volt ages, DC curr ent, and r esist ance.
3 Cautions : • Read this manua l compl etel y bef ore you use the met er . • If yo u are not famil iar wit h meters and testing p roce- dures, we suggest th at you read a book about the sub- ject, such as “ Using Y our Me ter” (Radi o Shack Cat .
4 A WORD ABOUT SAFETY We ha ve taken ever y prec aution in designi ng thi s meter to en- sure that i t is as safe a s po ssi ble. But safe op erati on depends on you, the ope rator . We recom mend tha t you f ollow thes e sim ple s afe t y rule s : • Never apply volta ges to the met er tha t exceed the l imits give n in the sp ecifi cati ons.
5 • Use e xtr em e c aut ion when you work wit h vol tages ab ove 40V . Always di sconnec t power from t he circuit you ar e measuri ng befor e you connec t test probes t o high- volt - age point s. • Never conn ect the t est pro bes to a sour ce of vol tage when you selec t the Rx1K W or 150mA DC func ti on.
6 • Never operat e the meter unles s the bat tery cove r is in plac e and f ull y clo sed. • Because m any AC/DC sets h ave a pot enti ally hot c has- sis, be sure the top o f your wor kbench and the floor undern eath it are made of non -conduct ive mater ials.
7 WARNING: USE EXTREME CAUTI ON IN USE OF THIS DE- VICE. IMPROPER USE OF THIS DEVICE CAN RESULT IN INJURY OR DEATH. FOLL OW ALL SAFEGUARDS SUG- GESTED IN THE OWNER’S MANUAL IN ADDIT ION TO NORMAL SAFETY PRECAUTIONS I N DEALING WITH ELECTRICAL CI RCU ITS.
8 SPE C IF ICA TIO NS Ranges AC V oltage ... . ...... ... .. . .... . ...... . . ... . ..... ...... ... . 15V , 150V , 100 0V DC V oltage ... . ...... . ..... ..... ...... . ..... ..... .. ..... ... 15V , 150V , 1000V DC Current ... ..... .. ..... ...
9 Se ns it iv it y AC V oltage ..... ... ..... ..... ...... ..... ..... ... ..... ..... ..... ...2000 ohm/ V olt DC V oltage ...... ..... ..... ....... ..... ..... ..... ..... ..... ......2000 ohm/V olt Operati ng T emperat ur e ....... ..... ..... ..
10 SPECIAL P ANEL MARKIN GS We hav e added speci al markings to t he panel t o remind yo u of th e meter ’ s measur ement lim itation s and import ant saf ety preca ut ions .
11 Be extr a carefu l when you ta ke measur ements fo r high voltag e. Do no t touc h the met er’s test probe ends. 22-2 18.fm Pag e 11 Frida y, Au gust 6, 19 99 11:44 AM.
12 INST ALLIN G A BA TTER Y Your met er uses on e AA batte ry for power . We r ecommend a n alka line bat te ry, such as Radio Shac k Cat. No. 23- 552/557. WARNINGS: • TO A VOID ELECTRIC SHOCK, DISCONNECT BOTH TEST LEADS FROM ANY EQUIPMENT BEFORE YOU REMOVE THE BA TTERY .
13 Follo w these steps to ins tal l the bat tery. 1. Set the funct ion sel ector to OFF a nd remove t he tes t leads fr om all test ci rc uits. 2. Use a Phillips screwdri ver to remove the screw on the back of the meter . 3. Remove the b ack of the meter .
14 4. Replace t he weak b at t ery wi th a fresh one, fol l owing the corr ect p olari ty (+ and –). 5. Replace the bac k and secu re it with the screw . Note: If you ca nnot adjust the poin ter to “0” on th e scale whe n you m easure resi stance (see “ Measuri ng Resis tance” ), it is ti me to r eplace the battery.
15 REPLA CING THE FUSE Your met er is protec ted by a 315 mA fus e. WARNINGS: • TO A VOI D ELECTRI C SHOCK, DI SCONNECT BOTH TEST LEADS FROM ANY EQU IPMENT BEFORE YOU REMOVE THE FUSE. • DO NOT OPERA TE THE M ETER UNTIL YOU REPLACE THE FUSE AND CLOSE THE BACK COVER.
16 CAUTION: FOR CONTINUED PROTECTI ON AGAINST FIRE OR OTHER HAZARD, REPLACE THE FUSE ONLY WITH A 315 mA, 250 V, 5 X 20 MM MINIATURE FUSE (CAT. NO. 27 0- 1046) .
17 1. Set the funct ion sel ector to OFF a nd remove t he tes t leads fr om all test ci rc uits. 2. Use a Phillips screwdri ver to remove the screw on the back of the meter . 3. Remove the b ack of the meter . 4. Replace t he blown fuse wi th a new one.
18 OPER A TION Cauti ons: • Use only th e same type of te st lea ds that a r e suppl ied with your meter . These tes t leads are rat ed for 100 0 volt s. Rep lacement s are avail able at your local Radi o Shack st ore. • When the meter is not in use, al ways leave th e funct ion se l ector set t o OFF .
19 Warni ngs: • Do not try to measur e any volt age over the meter’s rat - ing. Us e extreme c are when you u se these hi gh-vol tage ranges. • Never con nect the pr obe you pl ug int o the negat ive (–) termi nal to a sourc e of vo ltage more tha n 500 V .
20 MAKING ACCURA TE MEASUREMENTS For the most acc urate re ading, the te mperatur e shoul d be be- tween 43 °F and 74°F ( 6°C and 23°C) with an 80% maxi mum rela t iv e h u mid it y. Keep th e meter lying f lat on a no n-metal lic surf ace. Al so, us e a range setting t hat results i n a reading i n the upper t hi rd of t he met er sc ale.
21 For exact readi ngs, l ook at the scal e fr om the poi nt where t he point er and its refl ec t ion in the mir ror come togeth er . 22-2 18.fm Pag e 21 Frida y, Au gust 6, 19 99 11:44 AM.
22 Zero Adj ustment If the poi nter d oes no t nor m ally r est exact ly over 0 a t the left side of t he ACV/DC.VMA scal e, adjust th e plas tic screw in th e cente r of the tester face to bring the pointe r to zero.
23 Measuring High V olt ages When you measure vol ta ge in a hi gh-vol tage ci rcuit , do not try to posi tion both pro bes at onc e. Clamp o ne of th e probes t o the ci rcui t’s neut r al or gr ound lead u sing a Radio Sha ck insu- lated s lip-on al liga tor clip (Cat.
24 No te : I n AC wiri ng circ uits, t he ground l ead i s usual ly a bare, green, or wh i t e lead and the hot wi re is usu al l y red , bla ck, or blue. In DC wi ring circuit s, th e ground lead is us ually a bl ack lead; the hot wire is usual ly red.
25 Measuring DC V oltage WARNING: IF YO U ATTEMPT TO MEASURE A VOLTAGE ABOVE 1000 VOLTS DC, YO U M IGHT DAMAGE YOUR METER AND EXPOSE YOURSELF TO A SEVERE SHOCK HAZARD.
26 Foll ow the se st eps to meas ur e DC voltag e. 1. Set the functi on select or to one of the DC V p ositi ons . Note: If you are not certai n about the vol tage level, start with the 1000 DC V range. Then tr y the next lowest range until the r eading appears in the uppe r thi rd of th e met er sc ale.
27 Measuring AC V oltage WARNING: IF YO U ATTEMPT TO MEASURE A VOLTAGE GREATER THAN 1000 VOLTS AC, YOU MIGHT DAMAGE THE METER AND EXPO SE YOURSELF TO A SEVERE SHOCK HAZARD.
28 Foll ow the se st eps to meas ur e AC voltag e. 1. Set the functi on select or to one of the AC.V p osi tions . Note: If you are not certai n about the vol tage level, start with the 10 00 AC V r ange. Th en try the ne xt l owest range until the r eading appears in the uppe r thi rd of th e met er sc ale.
29 Measuring 3-Phase AC V olt age This meter is prim arily desi gned to measur e househol d AC volta ges and i s not in tended f or commerc ial or in dustri al use .
30 To det er mine t he line- to-li ne v oltag e, m ultipl y the ra ted l ine-t o- ground voltage by 1.732. F or exampl e, if th e r at ed vol tage is 600 vol ts, the lin e-to- li ne vol tage woul d be: 600 Vol ts x 1.732 = 1039.2 Vol ts In t his exampl e, th e volt age exceeds the meter ’s ra nge and shoul d not be measured.
31 Measuring AC V oltage on a DC Source Bias WARNING: NEVER M EASURE MORE T HAN 30 VOLTS AC ON A DC SOURCE BI AS. When an AC voltag e has been superimpo sed on a DC sour ce bias, you can not take ordinar y measur ement s. The readi ngs wander on the sc al e an d are not a ccurat e.
32 MEASURING DC CURRENT WARNING: NEVER CONNECT THE TEST L EADS TO A SOURCE OF UNKNOWN VOLTAGE WHEN YOU HAVE SET THE FUNCTION SELECTOR TO THE 150 mA DC POSI - TION.
33 2. Break t he elect rica l path for the ci rcui t in which you want to measur e current. Then c onnect the bl ack t est pr obe to the negat ive si de and th e red tes t probe to t he positi ve side of t he ci rcuit . Read t he res ults on th e scal e.
34 MEASURING RESIST ANCE WARNINGS: • NEVER CONNECT THE TEST LEADS TO A SOURCE OF VOL T AGE WHEN YOU HA VE SET THE FUNCTION SELECTOR TO THE Rx1K W POSITION. • BE SURE THA T THE CIRCUIT UNDER TEST HAS ALL POWER REMOVED AND THA T ANY ASSOCI A TED CAP ACITORS ARE FULL Y DISCHARGED BEFORE YOU MAKE A RESI ST ANCE MEASUREMENT .
35 1. Disconne ct power f rom the ci rcuit yo u are test ing. Then unplug th e power co r d and remove any bat teri es. 2. Set the f unctio n selector t o Rx1K W . T o uch the pro bes togeth er and adjust the OHMS AD J . co nt rol to b ring th e point er to the “ 0 ” p osition on the s cale.
36 Notes: • When you measure t he resi stanc e of a c omponen t in a cir cuit, disco nnect one side of the componen t you are test ing. This prevent s other co m ponent s in the cir cuit fro m interferi ng wi th the reading .
37 MAINTENANCE Your Radi o Shac k 8-Range Multit ester is an e xampl e of supe - rior desi gn and cr a ftsmansh ip. The fol lowing s uggestions wil l help you car e for the met er so you can enjo y it for years . • Keep the m eter dr y . If it get s wet, wipe i t d r y immedi ately .
38 • Handle the mete r gentl y and carefull y . Droppi ng it can dama ge the circui t boards and can cause it to work impro perly . • Keep the m eter awa y from dus t and dirt , whi ch can cause premature wear of parts. • Wipe the met er with a da m p cloth occasio nally to keep i t look ing new .
39 Modifyi ng or t ampering with the m eter’s i nterna l component s can cause a malfunct ion and m i ght i nvali date its warranty. I f your m eter is not perfor ming as it shoul d, t ake i t t o your loca l Radio Shack st ore for assi stance. 22-2 18.
RADIO SHACK A Div ision of T andy Cor po rati on For t Worth , T exa s 761 0 2 1 1 A5 Pr int ed in Ho ng Ko ng RADIO SHACK L IMITED W A RRANTY This p roduct is warranted a g ainst defects for 90 da y s from date of purchase from Radio Shack c ompan y -owned stores and authorized Radio Shack franchisees and dealers.
デバイスRadio Shack 22-218の購入後に（又は購入する前であっても）重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります：
Radio Shack 22-218をまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはRadio Shack 22-218の技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Radio Shack 22-218の取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Radio Shack 22-218で得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Radio Shack 22-218を既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はRadio Shack 22-218の不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Radio Shack 22-218に関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちRadio Shack 22-218デバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。
