Yuav Qhia Li Cas Yog Coax Cable Faulty (2 Methods Guide)
Txheem
Hauv tsab xov xwm no, kuv yuav qhia koj yuav ua li cas txheeb xyuas qhov tsis zoo coax cable hauv ob peb feeb xwb.
Raws li kev paub txog jack-of-tag nrho-kev lag luam, kuv siv ob peb lub tswv yim los xyuas qhov xwm txheej ntawm coax cables. Kuv yuav qhia koj qhov zoo tshaj plaws los ntawm phau ntawv qhia no. Kev puas tsuaj coaxial cables tuaj nrog ntau yam teeb meem, suav nrog tab sis tsis txwv rau cov teeb liab encrypted lossis kev txais internet tsis zoo. Nrhiav qhov laj thawj yog qhov tseem ceeb, tsis yog qhov kev xav rau kev txiav txim siab xwb.
Feem ntau, koj yuav tsum ua raws li ob peb kauj ruam yooj yim los kuaj xyuas yog tias coax cable zoo:
- Txuas lub DSS01 coax cable tester rau hauv lub qhov (socket) coax thiab nias lub pob kom kuaj nws.
- Ua ib qho kev ntsuas txuas ntxiv nrog lub tshuab hluav taws xob multimeter.
- Koj tuaj yeem tshawb xyuas qhov capacitance, tsis kam, thiab impedance nrog lub tshuab hluav taws xob multimeter.
Kuv mam qhia koj ntxiv hauv qab no.
Yuav Ua Li Cas Diagnose Faulty Coax Cable
Nws yog ib qho tseem ceeb heev los tsim kom muaj qhov xwm txheej ntawm koj cov coaxial cable. Qhov no yuav pab koj txheeb xyuas qhov teeb meem tiag tiag thiab tsis xav tau. Koj tuaj yeem siv ntau txoj hauv kev los xyuas seb koj lub coax cable puas zoo lossis phem. Kuv yuav mus rau hauv kev nthuav dav txog qee yam ntawm cov txheej txheem no.
Txoj Kev 1: Siv lub multimeter
Koj tuaj yeem siv multimeter los xyuas seb koj lub coax cable puas phem.
Ib tug multimeter ntsuam xyuas lub peev xwm ntawm ntau qhov chaw ntawm ib qho khoom siv hluav taws xob los ntawm ntau txoj kev suav.
Ua cov kev ntsuam xyuas hauv qab no ntawm coax cable:
Kev sim txuas ntxiv
Cov kauj ruam hauv qab no yuav pab koj:
Kauj ruam 1: Nruab lub multimeter
Ntxig qhov kev sojntsuam liab rau hauv lub jack nrog V ib sab ntawm nws thiab cov kev sojntsuam dub coj mus rau hauv COM jack.
Tom qab ntawd teeb lub multimeter rau tus nqi ntawm "Ohm" parameter los ntawm kev tig lub selector dial. Thaum kawg, ping cov xov hlau sojntsuam; Yog hais tias lub multimeter beeps, muaj continuation ntawm cov probes. Tam sim no cia peb pib sim cov coaxial cable.
Kauj ruam 2: Xyuas cov connectors
Coaxial cable tsis muaj polarity.
Kov cov xov hlau sojntsuam ntawm ob lub coaxial cable txuas. Yog hais tias lub multimeter beeps thiab nyeem tsawg dua 1 ohm, ces muaj kev txuas ntxiv hauv koj cov coax cable. Yog tias qhov kev nyeem ntawv tshaj ib ohm, koj cov connectors faulty.
Kauj Ruam 3: Tshawb xyuas cov xov hlau hauv cov connectors.
Kov cov pins ntawm sab hauv ntawm ob lub connectors dua. Ib qho kev nyeem hauv qab ib ohm txhais tau tias koj coax zoo.
Tshuaj ntsuam mus
Ntawm no, ib qho hluav taws xob multimeter yuav kuaj qhov voltage ntawm coaxial cable shield thiab lwm yam cable. Cov zaub yuav qhia cov lus teb / nyeem hauv HMS (hectometers).
kauj ruam 1. Teem koj lub multimeter mus rau hom tsis kam
kauj ruam 2. Ntxig 50 ohm dummy load rau hauv ib lub jack. Tom qab ntawd kov ib qho txhuas ntawm qhov kev sojntsuam mus rau qhov chaw ntawm lwm qhov txuas thiab lwm qhov ua rau sab hauv ntawm tib lub qhov (socket) - tsis muaj dummy load.
kauj ruam 3. Sib piv koj cov txiaj ntsig kev tawm tsam nrog lub nominal impedance ntawm koj coax cable.
Kev kuaj muaj peev xwm
Ntxiv dua thiab, siv lub tshuab hluav taws xob multimeter los xyuas qhov capacitance ntawm lub tsho thiab tus neeg xyuas pib ntawm coax cable. Kev suav yuav nyob hauv picofarads (pf).
Txheej txheem: Nrog lub multimeter hloov mus rau qhov kev ntsuas ntsuas, kov cov coj ntawm ob qho kawg ntawm coaxial cable thiab nco ntsoov nyeem ntawv, uas yuav tsawg heev - hauv picometers.
Kev ntsuas inductance
Koj tuaj yeem siv lub tshuab hluav taws xob multimeter los xyuas qhov inductance ntawm daim thaiv thiab kab ntawm coaxial cable. Thaum kuaj inductance, nanohenry (NH) thiab ohm (ohm) daws tau tham.
Cov cim ntawm kev puas tsuaj coaxial cable
Rustic Connectors - Yog tias xeb tshwm rau ntawm qhov kawg ntawm koj cov coax cable, cov coax cable feem ntau yuav muaj teeb meem.
Cov khoom uas ploj lawm qhia tias muaj teeb meem nrog lub coax cable.
Cov xim ntsuab ntawm cov coaxial cable txuas kuj qhia txog kev puas tsuaj.
Tsis muaj zog connectors - Yog tias koj twist lub connectors ntawm ib coaxial cable thiab xav tias lawv xoob, lawv puas.
raug cov kab mob - Yog hais tias cov strands hauv coax cable pom, nws puas lawm.
Lub raj yas puas (tseem hu ua roj hmab shield) - Yog tias cov ntaub thaiv npog roj hmab puas lawm, koj lub coax cable yuav puas lawm.
Yog li, yog tias koj pom ib qho ntawm cov cim no, siv lub tshuab hluav taws xob multimeter kom paub meej.
Nco ntsoov: Txoj kev tshawb pom ntxov tshaj plaws rau kev sim coax yog saib seb lawv puas tau ua tiav lawm.
Coaxial cables yog tsim los ntawm ntau lub tuam txhab, yog li lawv qhov zoo sib txawv heev.
Txoj Kev 2: Siv DSS01 Coax Cable Tester
Kuv pom zoo kom siv DSS01 Coax Cable Tester los xyuas cov teeb meem nrog koj cov coax cable. Nrog rau cov cuab yeej no, koj tsis txhob yuav lossis siv cov hauv qab no:
- Kev daws teeb meem txais tos
- Troubleshooting teeb liab kis tau tus mob
- Tsis xav tau multimeter
- Coax Cable Tracking
- Kev ntsuas txuas ntxiv - ntawm coaxial cable.
- Txhua yam koj xav tau yog DSS01 Coax Cable Tester!
Yuav ua li cas siv DSS01 coaxial cable tester
Ua raws li cov kauj ruam yooj yim no los sim koj cov coax cable nrog DSS01 tester:
kauj ruam 1. Txuas DSS01 Coax Cable Tester rau lub qhov (socket) coax.
kauj ruam 2. Nyem qhov Test khawm. Cov txiaj ntsig yuav tshwm sim hauv ob peb feeb.
DSS01 coaxial cable tester txuag lub sijhawm thiab nyiaj txiag. Txhua yam koj yuav tsum paub yog yuav ua li cas txuas lub qhov (socket) coaxial thiab lub pob xeem - nws yooj yim siv.
Tej teeb meem cuam tshuam rau coaxial cables
Kuv tau xaiv plaub qhov laj thawj tseem ceeb ntawm coaxial cable tsis ua haujlwm. Zam lawv kom ntseeg tau tias lub neej ntev thiab kev nyab xeeb tag nrho ntawm koj cov coax cables.
Kub puas
Lub melting point ntawm coaxial cables yog 150 ° F. Qhov no yog ib qho tseem ceeb melting point. Yog li, coaxial cables yog qhov yooj yim rau qhov kub thiab txias. (1)
lus qhia: Txhawm rau kom tsis txhob muaj kev puas tsuaj rau cov coaxial cable, cia nws deb ntawm qhov chaw kub. Yog tias koj tsis ua, cov ntaub thaiv npog roj hmab yuav yaj, thawb cov khoom (hauv cable) tawm ntawm qhov chaw.
Dej puas
Cov khoom siv hluav taws xob feem ntau yog qhov yooj yim rau dej. Coaxial cables tsis muaj kev zam. Cov hlua hluav taws xob thiab cov khoom siv yuav ua tsis tau yog tias raug dej. Yog li ntawd, khaws cov coaxial cable kom deb ntawm dej.
lub cev distortion
Qhov screen ntawm coaxial cable yog tsis yooj yim sua. Cov ntaub qhwv me me ntawm lub cable tuaj yeem tawg yog tias muab pov tseg, ua haujlwm hnyav, lossis tsis saib xyuas. Ib txwm siv cov cables ncaj nraim ua ntej. Qhov me ntsis khoov los yog kink tuaj yeem ua rau cov innards ntawm coax cable (los yog cov khoom sab hauv) poob tawm.
Txuas kev puas tsuaj
Ib qho kev sib txuas puas tuaj yeem ua rau tsis ua haujlwm ntawm coaxial cable.
Cov cables yog nruab nrog connectors ntawm ob qho kawg. Cov Connectors hloov cov ntaub ntawv los ntawm ib qhov chaw mus rau lwm qhov. Yog li ntawd, hloov ob qho tib si ntawm ob lub connectors degrades txoj haujlwm ntawm coaxial cable. Hmoov zoo, yog tias koj pom cov teeb meem, koj tuaj yeem hloov cov connectors es tsis txhob yuav ib lub cable tshiab. Thiab, ntawm chav kawm, qhov no yog lub ntsiab yog vim li cas rau qhov tsis ua hauj lwm ntawm coaxial cables. (2)
Ua tib zoo saib qee qhov ntawm peb cov lus hauv qab no.
- Yuav ua li cas txheeb xyuas lub teeb liab ntawm coaxial cable nrog multimeter
- Multimeter continuity cim
- Yuav txiav ib qho hluav taws xob li cas
tswv yim pom zoo
(1) melting point - https://chemed.chem.purdue.edu/genchem/topicreview/
bp/ch14/melting.php
(2) coaxial cable - https://www.sciencedirect.com/topics/engineering/
coaxial kab
Video txuas
