Janya sumani ani filiw yɔrɔ: TDR bɛ kabali filiw kɛ cogo min na

Sariyasen

Marisikalo tile 20, san 2022

TDR bɛ baara kɛ ni rada ye cogo kelen na kosɛbɛ. O minɛn bɛ wuli teliya la ka wuli ka don kabali kɔnɔ. Ni a ye impedance discontinuité sɔrɔ, fanga yɔrɔ dɔ bɛ segin kɔ.

TDR bɛ baara kɛ cogo min na: ‘Ka ye’ Kabɔri kɔnɔ i n’a fɔ rada

TDR (Time Domain Reflectometry) bɛ baara kɛ ni rada ye kosɛbɛ. O minɛn bɛ wuli teliya la ka wuli ka don kabali kɔnɔ. Ni a ye impedance discontinuité sɔrɔ (i n’a fɔ break, short circuit, joint, walima termination point), fanga yɔrɔ dɔ bɛ segin kɔ. Minɛn in bɛ waati danfara suman sɔgɔsɔgɔninjɛ ni hakilijakabɔ seginni cɛ, wa n’a farala ɲɔgɔn kan ni taamasiyɛn jɛnsɛnni teliya ye fɛnɲɛnamafagalan kɔnɔ, a bɛ jatebɔ kɛ ka taa danfara la.

O sariyakolo in bɛ iko a nɔgɔn don, nka fɛnba caman bɛ nɔ bila a la waleyali la. Siginidenw jɛnsɛnni teliya bɛ danfara ka bɔ kabali kunnafonidilan suguyaw la (a ka c’a la, fila-fila tigɛli bɛ jɛnsɛn ni yeelen teliya siɲɛ 0,6 fo 0,7 ye). Pulse wuli waati bɛ yɔrɔko ɲɛnabɔli dantigɛ — wuli waati surun kɔrɔ ye ko ɲɛfɔli ka bon nka yɔrɔjan sumanikɛlan maksimali ka surun. Siginiden min bɛ jira, o ka amplitude ni polarite bɛ se k’a fɔ i ye n’i bɛ ka baara kɛ ni sɛrɛkili dafalen ye (reflection positif), circuit surun (reflexion négative), walima impedance mismatch (reflexion partielle).

Ka bɔ sariyakolo la ka taa waleyali la: TDR waleyali Finders kɔnɔ

Bi kabali ɲininikɛlanw na, TDR baarakɛcogo bɛ don ɲɔgɔn na cogoya la ni janya sumani ye. FangService ka PK652 seriyali ye TDR suguya ɲininikɛlan ye min bɛ kɛ cogoya la — a tɛ a fɔ i ye dɔrɔn ni kabali bɛ se ka fɛnw ta, nka a bɛ kabali janya bɛɛ lajɛlen fana fɔ i ye ani kari yɔrɔ kɛrɛnkɛrɛnnen.

Baara kɛcogo ɲuman na, TDR sɛgɛsɛgɛli bɛ a ɲini kabali dakun kelen fɛ walasa ka se ka don a kɔnɔ (ka siri minɛn na), k’a sɔrɔ dakun tɔ kelen cogoya bɛ nɔ bila sumani jaabiw la. Ni a dakun tɔ kelen dabɔra (a ma ban), minɛn bɛ da wulilen jiracogo ye, wa a bɛ se ka kabali janya bɛɛ jate. Ni dakun tɔ kelen in labanna ni impedansi bɛnkan ɲuman ye, reflection (fɔcogo) si tɛ Ye, wa a ni labanyɔrɔ cɛ janya dɔrɔn de bɛ Se ka Sugandi. Ni a dakun tɔ kelen surunyara, surunya-yɔrɔ-ko-fɔcogo bɛ Ye, wa yɔrɔjan fana bɛ Se ka Jate.

TDR dantigɛliw ani faamuyali jugu minnu bɛ kɛ tuma caman na

TDR fanga ka bon nka a tɛ fili ye. Nin ye faamuyali jugu kɛcogo damadɔ ye minnu bɛ kɛ tuma caman na. A fɔlɔ, ni kari caman bɛ kabali dɔ kɔnɔ, TDR bɛ se ka min ka surun dɔrɔn, o bɛ se ka min jira — taamasiyɛn fɔlɔ min bɛ jira, o bɛ yeelenw masiri ka bɔ yɔrɔ jan. Filanan, ni lafiɲɛbɔ dɔ surunyalen don kosɛbɛ minɛn na (i n’a fɔ mɛtɛrɛ 1 kɔnɔ), minɛn in ka yɔrɔ salen waati bɛ se ka kɛ a tɛ se k’a ɲɛnabɔ, o bɛ kɛ sababu ye ka ɲɛfɔli kɛ fɛn yebali ye. Sabanan, kuran-sɛnɛ-yɔrɔ barikamaw bɛ mankan don min bɛ dɔ bɔ TDR sumani tiɲɛni na.

Ka fara o kan, TDR bɛ kuran taamasiɲɛ jɛnsɛnni yɔrɔjan suman, a tɛ farikolo janya suman. Ni kabali dɔ kɔrɔtalen don ka sama ka tɛmɛ jibolisira dɔ fɛ, farikolo janya yɛrɛ bɛna bonya ka tɛmɛ TDR fɛ min suman ni tilennen ye. Ni sɛgɛsɛgɛli kunnafoniw bɛ fɔ, a nafa ka bon k’a dɔn ni ja in ye ‘kuran janya’ ye walima ‘farikolo janya’.

TDR vs Traditional Methods: Yɛlɛma donna baarakɛcogo ɲuman na

Sani TDR ka kɛ, taabolo kɔrɔ min tun bɛ kɛ ka kabali karilenw ɲɛnabɔ, o tun ye : sɛgɛsɛgɛli ɲɛnama → dakun ni dakun排查 → fɛn falen sɛgɛsɛgɛli. O fɛɛrɛ in tora nafa la yɔrɔjanw na ani kabali jate misɛnninw na, nka yɔrɔjanw na, kabali caman, ani baara dogolenw na, baarakɛcogo ɲuman tun ka dɔgɔ kosɛbɛ.

TDR fɛɛrɛ bɛ gɛlɛyaw ɲɛnabɔ waati dɔgɔya ka bɔ ‘lɛrɛw’ la ka taa ‘minitiw’ la. Ɛntɛrinɛti baarakɛla ŋana min bɛ baara kɛ ni PK652 seriyali ye, o bɛ se ka lafiɲɛbɔyɔrɔ sɔrɔ mɛtɛrɛ 100 kabali kɔnɔ miniti damadɔ kɔnɔ, k’a sɔrɔ laadala fɛɛrɛw bɛ se ka kɛ sababu ye ka ɲɔgɔndan kɛsu caman da wuli ani ka 排查 yɔrɔ kelen-kelen bɛɛ da, o bɛ lɛrɛ caman ta walima ka tɛmɛ o kan yɛrɛ.

Min nafa ka bon kosɛbɛ, o ye ko TDR ye sɛgɛsɛgɛli fɛɛrɛ ye min tɛ tiɲɛni kɛ — a tɛ kɛ sababu ye ka kabali tigɛ walima ka ɲɔgɔndanw da, ka kabali tiɲɛni filanan bali. O nafa ka bon kɛrɛnkɛrɛnnenya la baara dogolenw na minnu dafara kaban.

TDR kɔfɛ: Kabɔri sɛgɛsɛgɛli fɛɛrɛw jiginni

TDR ye fɛɛrɛ jɔnjɔn ye kuran kabɔri sɛgɛsɛgɛli la, k’a sɔrɔ fibre optique sɛgɛsɛgɛli la, o cogo kelen na, nka a ka gɛlɛn kosɛbɛ, o bɛ wele ko OTDR (Optical Time Domain Reflectometry). OTDR bɛ optique pulses ci ka don fibre kɔnɔ ani ka yeelen jiralen sɛgɛsɛgɛ walasa ka kariw, splice bɔnɛw, connecteurs bɔnɛw, ani janya bɛɛ lajɛlen dɔn.

K’a ta TDR la ka taa OTDR la, kabali sɛgɛsɛgɛli fɛɛrɛbɔ hakilina jɔnjɔn ma Changé — u fila bɛɛ bɛ baara kɛ ni taamasiyɛnw ye minnu bɛ jira walasa ka ‘a lajɛ’ min bɛ kɛ kabali kɔnɔ. Min bε Yεlεma, o ye taamaʃyɛn-talan dɔrɔn de ye (kuran vs optique) ani sumanikɛcogo tigitigi. FangService ka kabali sɛgɛsɛgɛli sira bɛ sinsin sisan kuran kabɔri sɛgɛsɛgɛli kan (PK651/PK652/PK653+/PK659), ka sɛgɛsɛgɛli fura dafalenw di kumaɲɔgɔnya ni kuran kabɔri injiniyɛri ma. Ni fiyɛri kabɔri bɛ ka caya ka taa a fɛ, OTDR suguya fɛnw bɛna kɛ dafalen nafama ye layini in na. View the Cable Test Instruments Collection