Didime Dzidzedze Kple Vodada Teƒe: Alesi TDR Naa Kaƒomɔ̃ ƒe Vodadawo Wodzena

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Dzove 20, 2022. Eƒe dukɔ nye […]

TDR wɔa dɔ abe radar ene ŋutɔ. Dɔwɔnua ɖoa ʋuʋudedi ƒe dzesi si le dzi yim kabakaba ɖe ka la me. Ne edo go impedance discontinuity la, ŋusẽa ƒe akpa aɖe trɔna yia megbe.

Alesi TDR Wɔa Dɔe: ‘Nukpɔkpɔ’ Le Ka Si Abe Radar Ene Me

TDR (Time Domain Reflectometry) wɔa dɔ abe radar ene ŋutɔ. Dɔwɔnua ɖoa ʋuʋudedi ƒe dzesi si le dzi yim kabakaba ɖe ka la me. Ne edo go impedance discontinuity (abe break, short circuit, joint, alo termination point) la, ŋusẽa ƒe akpa aɖe trɔna yia megbe. Dɔwɔnua dzidzea ɣeyiɣi ƒe vovototo si le ʋuʋudedi ƒe kaka kple keklẽ ƒe tɔtrɔgbɔ dome, eye ne wotsɔ dzesi ƒe kaka ƒe duƒuƒu le nusi wotsɔ wɔa dɔe me kpe ɖe eŋu la, ebua didime si le ʋuʋudedi ƒe madzudzɔmadzudzɔe gbɔ.

Edze abe gɔmeɖose sia le bɔbɔe ene, gake nu vevi geɖe siwo trɔna kpɔa ŋusẽ ɖe edzi le nuwɔna me. Dzesiwo ƒe kaka ƒe duƒuƒu to vovo le kaƒomɔ̃ ƒomevi vovovowo me (zi geɖe la, eve siwo wotro la kakana le kekeli ƒe duƒuƒu ƒe teƒe 0.6 va ɖo 0.7). Pulse ƒe dziyiɣie ɖoa teƒe ƒe vovototodedeameme — dziyiɣi kpuitɔ fia be vovototodedeameme si lolo wu gake didiƒe si woate ŋu adzidze si sɔ gbɔ wu kpuie wu. Dzesi si woɖena fiana ƒe amplitude kple polarity ate ŋu agblɔ na wò nenye be èle nu wɔm kple nutome si le ʋuʋu (positive reflection), short circuit (negative reflection), alo impedance mismatch (partial reflection).

Tso Gɔmeɖose dzi yi Nuwɔna dzi: TDR ƒe Dɔwɔwɔ le Finders me

Le egbegbe ka didimɔ̃wo me la, zi geɖe la, wotsɔa TDR ƒe dɔwɔwɔ wɔa ɖeka kple didime dzidzedze. FangService ƒe PK652 series nye TDR-ƒomevi didi si bɔ — menye ɖeko wògblɔna na wò nenye be ka aɖe nye conductive ko o, ke egblɔa ka ƒe didime bliboa kple teƒe tɔxɛ si ɖiɖiɖeme le hã na wò.

Le eŋudɔwɔwɔ ŋutɔŋutɔ me la, TDR dodokpɔ bia be woate ŋu aɖo ka la ƒe nuwuwu ɖeka (woatsɔe aƒo ka na dɔwɔnua), evɔ nuwuwu kemɛa ƒe nɔnɔme ya kpɔa ŋusẽ ɖe dzidzedze ƒe emetsonuwo dzi. Ne eƒe nuwuwu kemɛa le ʋuʋu (mewu enu o) la, dɔwɔnua kpɔa nutomeʋuʋu ƒe keklẽ si le ʋuʋu ɖi eye ate ŋu abu ka ƒe didime bliboa. Ne wotsɔ mɔxexeɖenu ƒe sɔsɔ nyuie wu nuwuwu kemɛa nu la, womekpɔa keklẽ aɖeke o, eye didime si le nuwuƒea gbɔ koe woate ŋu adzidze. Ne woɖe eƒe nuwuwu kemɛa kpuie la, wokpɔa ʋuƒo kpui aɖe ƒe keklẽ, eye woate ŋu abu didime hã.

TDR ƒe Seɖoƒewo Kple Gɔmeɖeɖe Totro Siwo Bɔ

Ŋusẽ le TDR ŋu gake menye vodadamanɔŋui o. Gɔmeɖeɖe totro ƒe nɔnɔme geɖe siwo bɔ lae nye esi. Gbã la, ne gbagbã geɖe le ka me la, esi te ɖe eŋu wu koe TDR ate ŋu aɖee afia — dzesi gbãtɔ si woɖe fia la tsyɔa keklẽ siwo tso didiƒe wu dzi. Evelia. Etɔ̃lia, elektrikŋusẽ ƒe nutete sesẽ ƒe nɔnɔmewo hea toɣliɖeɖe si ɖea TDR dzidzedze ƒe nyateƒetoto dzi kpɔtɔna vɛ.

Tsɔ kpe ɖe eŋu la, TDR dzidzea elektrikŋusẽ ƒe dzesi ƒe kaka ƒe didime, ke menye didime ŋutɔŋutɔ o. Ne wobɔbɔ ka aɖe eye wohee to mɔ̃ aɖe me la, didime ŋutɔŋutɔ si woatsɔ awɔe la asɔ gbɔ wu fli dzɔdzɔe ƒe didime si wodzidze to TDR dzi. Ne wole dodokpɔ ŋuti nyatakakawo gblɔm la, ele vevie be woade dzesii nenye be xexlẽmea nye ‘elektrik ƒe didime’ alo ‘ŋutilã ƒe didime’.

TDR vs Mɔnu Deŋgɔwo: Afɔɖeɖe ƒe Tɔtrɔ le Dɔwɔwɔ Nyuie me

Do ŋgɔ na TDR la, ɖoɖo si wozãna tsɔ kpɔa ka ƒe gbagbã gbɔe nye: ŋkuléle ɖe nu ŋu → akpa ɖesiaɖe排查 → ɖɔliɖɔli ƒe kpeɖodzi. Mɔnu sia gakpɔtɔ wɔa dɔ le didiƒe kpuiwo kple ka suewo ƒe xexlẽme gome, gake le didiƒe ʋĩ, ka geɖe, kple dɔ ɣaɣlawo gome la, dɔwɔwɔ nyuie mede ŋgɔ kura o.

TDR mɔ̃ɖaŋununya ɖea kuxiwo gbɔ kpɔkpɔ ƒe ɣeyiɣi dzi kpɔtɔna tso ‘gaƒoƒo’ va ɖo ‘aɖabaƒoƒo’. Mɔ̃ɖaŋudɔwɔla bibi si zãa PK652 ƒe hatsotsowo ate ŋu akpɔ afisi ka si didi meta 100 le la le aɖabaƒoƒo ʋɛ aɖewo ko me, evɔ mɔnu xoxowo ya ate ŋu abia be woaʋu kadodoɖaka geɖe kple排查 akpa ɖesiaɖe, si axɔ gaƒoƒo geɖe alo esi wu nenema gɔ̃ hã.

Vevietɔ wu la, TDR nye dɔlélewo didi ƒe mɔnu si megblẽa nu o — mehiã be woalã kawo alo aʋu kadodowo, aƒo asa na nu evelia si gblẽ le ka la ŋu o. Esia le vevie ŋutɔ le dɔ ɣaɣla siwo wowu enu xoxo me.

Beyond TDR: Kadodo Dodokpɔ Mɔ̃ɖaŋununya ƒe Nɔnɔmetɔtrɔ

TDR ye nye mɔ̃ɖaŋununya vevitɔ si wozãna tsɔ doa elektrikkawo kpɔna, evɔ le fiber optic dodokpɔ me la, woyɔa mɔnu ma tɔgbe gake wòsesẽ wu be OTDR (Optical Time Domain Reflectometry). OTDR ɖoa optical pulses ɖe fiber la me eye wòdzroa kekeli si woɖena fiana me be yeanya gbagbã, splice ƒe bu, connector ƒe bu, kple didime bliboa.

Tso TDR dzi va ɖo OTDR dzi la, susu vevitɔ si le ka dodokpɔ mɔ̃ɖaŋununya me metrɔ o — wo ame evea siaa zãa dzesi siwo woɖena fiana tsɔ ‘kpɔa’ nusi le edzi yim le ka la me. Nusi trɔ koe nye dzesi tsɔla (elektrik vs optical) kple dzidzedze ƒe pɛpɛpɛ. FangService ƒe ka dodokpɔ fli fifia léa fɔ ɖe elektrik ka dodokpɔ (PK651/PK652/PK653+/PK659), si naa dodokpɔ ƒe kuxiwo gbɔkpɔnu blibowo na kadodo kple elektrik kaƒoƒo mɔ̃ɖaŋu. Esi fiber kaƒoƒo va bɔ ɖe edzi la, OTDR-ƒomevi ƒe atikewo ava zu kpeɖeŋutɔ vevi aɖe na fli la. View the Cable Test Instruments Collection