Māe 20, 2022
TDR ej jerbal einwot radar. Kein jerbal eo ej jilkinlok juon signal in pulse eo ej mõkaj an wōnmanlok ñan cable eo. Ñe ej iion juon impedance discontinuity, mõttan in kajoor eo ej bar jeblak.
TDR (Time Domain Reflectometry) ej jerbal einwot radar. Kein jerbal eo ej jilkinlok juon signal in pulse eo ej mõkaj an wōnmanlok ñan cable eo. Ñe ej iion juon impedance discontinuity (einwot juon break, short circuit, joint, ak termination point), mõttan in kajoor eo ej bar jeblak. Kein jerbal eo ej joñe oktak in ien eo ikõtan pulse transmission im reflection return, im kobalok ibben joñan an signal eo etal ilo medium eo, ej bwine joñan ettol eo ñan discontinuity eo.
Pedped in katak in ej einwõt epidodo, ak elõñ men ko relap rej jelet ilo jerbal. Mōkaj in an signal eo oktak jen kain cable media ko (twisted pair ekkā an etal ilo 0.6 ñan 0.7 alen joñan an mõkaj an meram). Iien eo an pulse eo ej wōnmanlok ej kōmman joñan an maroñ in walok — ien eo ediklok an wōnmanlok ej melelen joñan an utiejlok ak ediklok joñan an maroñ in joñe. Joñan im polarity in signal eo ej walok emaron kwalok ñan yuk elañe kwoj jerbal ibben juon open circuit (positive reflection), short circuit (negative reflection), ak impedance mismatch (partial reflection).
Ilo cable finder ko raan kein, jerbal in TDR ej koba ippān joñan depakpak. FangService's PK652 series ej juon TDR-type finder — ejjab baj kwalok wōt elañe juon cable ej conductive, ak ej bareinwōt kwalok ñan yuk joñan cable eo im jikin eo ej rup.
Ilo jerbal, TDR testing ej aikuj juon jemlokin cable eo bwe en maroñ in deloñ (kobalok ñan kein jerbal eo), ilo ien eo jekjek in jemlokin eo juon ej jelet tokjen joñan ko. Elañe jemlokin eo juon ej bellok (jab jemlok), kein jerbal eo ej lo juon meram eo ej bellok im emaron in bwine joñan depakpak in cable eo. Elañe jemlokin eo juon ej jemlok kin impedance matching eo emman, ejelok reflection ej walok, im joñan wōt joñan ettol eo ñan jikin jemlok eo emaron joñe. Elañe jemlokin eo juon ej mōkaj, juon mōttan eo edik ej walok, im joñan ettol emaron barāinwōt bwine.
TDR ej kajoor ak ejjab jab bōd. Lale jet ian wāween ko rej walok ilo melele ko rebōd. Mokta, elañe elōñ rup ko ilo juon cable, TDR emaron wōt kwalok eo epaaktata — signal eo moktata ej kalibubu rup ko jen ettolok. Kein karuo, elañe juon break ej lukkun epaak ñan kein jerbal eo (einwõt ilowaan 1 mita), ien dead zone eo an kein jerbal eo emaron jab maroñ in kōmmane, im kōmman bwe reflection eo en jab alikar. Kein kajilu, jikin ko rekajur an electromagnetic interference rej kōmman ainikien ko rej kōmman bwe en diiklok joñan jimwe in joñan TDR.
Bar juon, TDR ej joñe joñan an signal in electrical etal, jab joñan an to. Elañe juon cable ej rup im jibwe ilo juon ial, joñan depakpak eo enaj laplok jen joñan ettol eo an TDR. Ñe kwoj kwalok melele in test ko, ej aorōk bwe kwon lale elañe pija eo ej 'electrical length' ak physical length'.
Mokta jen TDR, wāween eo ekkar ñan kōmman bwe en rup cable ko ej: lale ilo mejen → section-by-section排查 → substitution verification. Wãwen in ear jerbal wõt ñan jikin ko redik im joñan cable ko redik, ak ñan jikin ko rettolok, elõñ cable ko, im jerbal ko rettino, ear lukkun dik an jerbal.
TDR technology ej kōmman bwe en diiklok ien kōmman jorrāān jen 'awa ko' ñan 'minit ko.' Juon injinia eo ewor an maroñ ilo an kajerbal PK652 series emaron loe juon rup ilo juon 100-meter cable ilowaan wōt jejjo minit ko, ak wāween ko etto remaroñ aikuj in kōpeļļo k elōn junction box ko im排查 section by section, bōk elōn awa ko ak elaplok.
Men eo eaorōk tata, TDR ej juon wewein etale eo ejjab kakkure — ejjab aikuj in mwijbar cable ko ak kōpeļļo k connector ko, bwe en jab jorrāān cable eo. Menin ej lukkun aorōk ilo jerbal ko rekar dedelok.
TDR ej kein jerbal eo elaptata ñan test cable in kajur, ilo ien eo ilo fiber optic testing, juon kein jerbal eo einlok wõt ak elaplok an bin ej naetan OTDR (Optical Time Domain Reflectometry). OTDR ej jilkinlok optical pulse ko ñan fiber eo im etale meram eo ej walok ñan lale joñan an rup, jako in splice ko, jako in connector ko, im joñan depakpak eo.
Jen TDR ñan OTDR, unin an kōmman cable testing technology ejjab oktak — erro jimor rej kajerbal reflected signal ko ñan 'loe' ta eo ej walok ilowaan cable eo. Ta eo ear oktak ej baj signal carrier eo (electrical vs optical) im joñan jimwe. FangService's cable testing line ej jerbal ilo electrical cable testing (PK651/PK652/PK653+/PK659), im letok wāween ko rejejjet ñan communication im electrical cable engineering. Ilo an fiber cabling jino an laplok, OTDR-type product ko renaj erom juon men eaorōk ñan line in. View the Cable Test Instruments Collection
Kwalok ñan kim jekjek in jerbal eo am im men ko rej aikuji, innem kim naj lewoj juon wāween eo ejimwe im lewoj juon am quote ilowaan 24 awa.
Bōk juon quote ejjelok wōnāānPK651 analog/digital cable finder, PK652 finder with length measurement, PK653+ multi-range finder (100M/300M/400M), PK659 multifunction finder — four series covering the complete needs from basic continuity verification to advanced fault location. High-precision identification, up to 600M length measurement, rapid fault location — designed for installation and maintenance of network, telephone, and electrical cabling systems.
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