Mai ba da Ethernet Karuwa, PoE kariyar kariyar kayan aikin gwaji (Sashe na I) - Mahimmin ra'ayi na rikicewa

1. Saurin bayanai da bandwidth na sigina

Haɗin Ethernet dole ne ya fara rarrabe “bandwidth na sigina” da “ƙimar bayanai” dabaru biyu, na iya bambanta daga naúrar, ɗayan MHz ne, ɗayan kuma Mbps ne. RJ45 cat5 / 5e cibiyar sadarwar Ethernet (asalin ƙa'idodin layin cat5 an watsar da su, yanzu layin cat5 da aka ambata yana nufin super cat5e layi), RJ45 cat6 Network Ethernet na USB na iya gudanar da bayanan gigabit, cat5e ne kawai da cat6 kanta siginar bandwidth, aiwatar da tsarin yarjejeniya bambanci. Misali, yaya girman fadila, da kuma yadda motar zata iya gudu a kan hanya, su ne ra'ayoyin guda biyu, amma akwai wani daidaito, lokacin da motar ta fi son yin sauri, wannan ya fi fadi.

• cat5e layi 100 MHZ iyakar siginar bandwidth, mafi girman bayanai na iya gudana 1000 Mbps.
• cat6 layin siginar layin cat250 na 5 MHZ, mafi girma zai iya gudanar da bayanan XNUMX Gbps.

Cimma bayanai ta hanyar canje-canje nau'in saurin saurin yarjejeniya.

Kayan aikin mu na zamani da aka fi sani da MB na karuwar kariyar yanar gizo sunada yawa ne gwargwadon yadda MB da gigabit suke.

2. Daidaitaccen Ethernet watsa

Gigabit Ethernet misali yana mai da hankali kan nau'ikan watsawa na watsawa guda uku, fiber mai yanayin-yanayi; Doguwar igiyar ruwa akan laser fiber multimode (wanda ake kira 1000 base LX) da kuma gajeren laser multimode fiber (wanda ake kira 1000 base SX); 1000 base CX matsakaici, matsakaiciyar na iya kasancewa cikin garkuwar daidaitawa 150 ohms akan watsawar kebul na jan karfe. IEEE802.3 z kwamiti wanda aka kirkira 1000 base-t misali ya bada damar Gigabit Ethernet a cikin cat5e da cat6 UTP karkatattun-biyu suna fadada nisan watsa na mita 100, suna yin mafi yawan wayoyin cikin gida na gini tare da cat5e na UTP karkatattun biyun, tabbatar da mai amfani da saka hannun jari a baya a cikin Ethernet, mai saurin Ethernet.

1000 base-t da kuma 100 base-t sun canza sau daya ta hanyar amfani da mitar agogo iri daya, amma tare da watsa sigina mai karfi da kuma tsarin sauyawa / sauyawa, wannan makircin na iya kasancewa akan mahaɗin sau biyu fiye da yadda aka watsa 100-base na bayanai. Baidu encyclopedia)
Hanyoyin sadarwar gigabit na bayyane na iya kasancewa akan zangon siginar 100 MHZ ko 250 MHZ ya ƙare daga 1000 Mbps. An tsara kowane nau'in nau'in kebul a cikin teburin da ke ƙasa da saurin saurin bayanai.

Hanyoyin ladabi iri-iri daban-daban masu saurin saurin bayanai, igiyoyi, nisa na sigina (daga littafin fasaha na FLUKE)

Kowane ƙa'idodin aikace-aikacen ƙa'idodi ne na iyakar ƙimar gwajin, zaɓaɓɓen daidaitaccen zaɓi don ƙayyade tushe.

Babban mai ba da kariya ta Ethernet da ke amfani da 100Mbps (na'urar kariya ta karuwa) amfani da 2 na kariyar layi, ya kamata ya zaɓi cat5 100 base-TX, yana gwada bandirin mitar 80MHz, saurin bayanan gwajin yana 100Mpbs.

Babban mai ba da kariya ta Ethernet mai saurin 1000Mbps (na'urar kariya ta karuwa), ta amfani da nau'i nau'i 4 na kariyar layi, da farko tabbatar tsalle shine cat5e ko cat6, sannan kuma zaɓi layin cat5e mai dacewa: cat5e 1000 Base-T, yana gwada bandar MHZ 250 MHZ, saurin gwajin bayanai yana 1000 Mbps; layin cat6: cat6 1000 Base-TX, ATM-1.2G, FC1.2G, suna gwada bandirin mitar 250 MHZ, saurin bayanan gwajin yana 1000 Mbps. Gigabit net suna amfani da kariyar layi 4 pars.

Baya ga aikace-aikacen daidaitacce, amma har da gwajin ta hanyar daidaitattun ƙasashe ko yankuna daban-daban, kamar IEEE802.3; Tsarin GB / T50312-2016 kamar cat 6 / 5e CH daidaitaccen gwajin Ethernet, nau'ikan da suka dace a cikin daidaitattun ladabi, alal misali, haɓaka, rarar dawowa da kuma crosstalk.

3. Zaɓin layin tsalle na gwaji

Ethernet SPD yana cikin jerin CHANNEL, don haka yana buƙatar layin tsalle. Dangane da T568A ko T568B masu tsalle suna amfani da dokoki daban-daban don amfani, adadi mai zuwa. Zaɓi madaidaicin RJ45 kebul na Ethernet SPD bisa dacewa da buƙatar aikace-aikacen niyya.

100Mbps cibiyar sadarwar, yakamata a rarrabe na'urar kariya ta gigabit ta kariyar kariya da nau'ikan kebul na cat5, layin cat6 gabaɗaya suna amfani da firam keɓewa, madaidaicin igiyar igiya ɗaya ta fi kauri, kuma ayi ta bisa ga zaɓin yanayi daban-daban: UTP ba tare da toshewa ba; ScTP \ FTP garkuwar waje; STP duka toshe (layi zuwa garkuwar waje) na iya koma zuwa zane mai zuwa.

A matsayinka na hukumomin gwaji na ɓangare na uku, yakamata tare da STP cat6 jumper, azaman layin tsallake jarabawar. Zai amsa duk sakamakon gwajin don samfurin kariya na Ethernet samfurin kanta, maimakon tsalle tsalle.

Ko ta yaya, 100M / gigabit Ethernet sigogin sadarwa na kariyar kariya ba a cikin faɗin 100/1000 MHZ ba a ƙarancin gwajin gwaji, komawar dawowa da hanyar wucewa, har ma ba tare da daidaitattun masu sauya daidaito ba akan gwajin mai binciken hanyar sadarwar bidiyo, wannan shine ainihin ra'ayi na rikicewa.

Ethernet Surge Protector (overarfin Ethernet PoE mai haɓaka na'urar kariya) sigogi Gwaji (Sashe na II) - Tasirin na'urar kariya ta walƙiya akan sifofin haɗin haɗi mai sauri

(Anan kar ku ambaci batun ta hanyar ƙarfin rarrabawa da sauran abubuwan yau da kullun na matsalolin kayan aikin kariya na ƙaruwa)

Mai kare Ethernet ya shafi sigogin watsawa guda uku a cikin haɗin Ethernet.

Shine asarar sakawa IL; Crosstalk tsakanin layi da layin GABA ko FEXT, da dawo da hasara RL. Tunda Ethernet SPD ya katse cikin layin Ethernet, don amfani da haɗin waya mai tsalle. Ba a haɗa na'urar kawai tare da abubuwan da ke cikin layi ɗaya ba, a lokaci guda, saboda allon zagaye da aka buga zai iya samun layin ne kai tsaye, layin nisa, layin ɓangaren giciye da asalin cat6 da kebul na cat5e, ƙaƙƙarfan ƙaranci canji.

(1) Asarar sakawa da juriya na lantarki tsakanin SPD ya haifar, kuma diamita na waya shima yana da wasu tasiri. Tunda ya haɗu da mai kariya, don ƙirƙirar sabon haɗin haɗin RJ45 guda biyu, maki na juriya tuntuɓar juna da sakamako a cikin asarar shigarwar. Wannan shi ne haɓakar haɓakar madauki duka. Idan asarar sakawa ta yi yawa, to siginar ba za ta iya yaduwa nesa ba, wayoyi ba zai yiwu ba don cimma kasafin kudin aikin da ake so a gaba

Hoto 1 - Rashin ƙarfin rarraba na'urar kariya

(2) Crosstalk tsakanin layi da layi, da farko ta amfani da murɗaɗɗun biyun, layin keɓewa tsakanin kwarangwal, ƙara girman diamita na waya, ƙara ƙimar kinky, har ma da layi don kariya don cimma saurin watsawa. Koyaya, a cikin kwamiti mai zagayawa mai tsaro, ba zai yuwu a juya-biyu ba, mara karfi ya shiga layuka masu layi daya kuma ya rage kinky. A cikin layin watsawa mai saurin gaske, gabaɗaya abin da ake buƙata an warware shi ba fiye da 13 mm ba a tsayi, don gudanar da hanyar sadarwa mai sauri, amma mai kariyar kariyar ba zai iya kawai wajan PCB 13 mm ba. Don crosstalk yana ɗaya daga cikin waɗanda suka fi damuwa a cikin alamomin sadarwar sauri, gabaɗaya a lokacin sahu mai kankara, gajere kaɗan na milimita, za a yi la’akari da wayoyi masu daidaito tsakanin crosstalk, balle ma mai ba da kariya.

Hoto 2 - bugun katako na kewaye don SPD

Bugun katangar kewaye, kodayake ba zai iya cimma sakamakon jujjuyawar ɗayan ba, amma har yanzu ƙirar kirkirar iya gamsar da buƙatar amfani

(3) asarar dawowa, sakamakon lalacewar ci gaba ne. Ya banbanta da wannan impedance da rashin tasirin "Sashi na I" da muka ambata, anan m don canza yanayin halayen, janar shine 100-120 cable mai jujjuya-juzu'i, jikin kebul na ƙimar inductance da ƙarfin. Proteararriyar toararrawa tana layi ɗaya da wajan jirgin kewaye da aka bayyana a sama, dukkanin ci gaba da ƙarancin kewayen lalacewa mai tsanani (kamar yadda aka nuna a cikin Hoto na 2 - bugun kewaye na SPD) Gabatarwar layuka a cikin mahaɗin, shima yana buƙatar ƙaramar mahaɗan mai siyarwa gwargwadon iko, mai ba da ƙarfi, mai kula da mahaɗan mahaɗan kuma bai lura da girman matsalar ba, bututun mai fitarwa sama da 2 mm. Haɗin mahaɗan suna lalata lalata layin. Ya sake juyawa baya a cikin madauki, mafi girman kuwwa a wannan shine mafi girman rikidar rikida.

Tsarin halayen rashin daidaito

Dangane da ƙirar ƙirar ƙira, za mu iya ganin muddin fasalin tashar tashar watsawa ya canza, ƙarancin halayyar zai canza

Bayan tattaunawa akan mahimmin ma'aunin nan na sama guda uku, shima yakamata ya kula da wani ma'aunin, wanda ake kira SNR (Siginar zuwa Noararrawar Rage) ACR. Za a iya amfani da yanayin sigina-zuwa-amo a matsayin gyara zuwa sigogi ukun da suka gabata, don sanin hanyoyin cikakken bincike. Isarfin sigina yana ƙaddara ta asarar sakawa. Isarfin ƙarfi yana ƙaddara ta hanyar crosstalk da amsa kuwwa. Crosstalk amo da amsa kuwwa suna da ƙarfi, amma asarar shigarwa ta ƙaramar sigina mai ƙarfi ne, babban watsa sigina na ɓata sigina, ba azaman sigina zuwa ƙarar amo ba ƙarami ne, ana iya yanke hukunci azaman mai cancanta. A gefe guda, asarar sakawa karami ce, amma amo na crosstalk, siginar-da-amo rabo ne babba, watsa layin ba zai cancanta ba.

Hoto 3 - siginar-da-amo rabo

Kariyar kariya kuma za ta kawo wata matsalar, wannan shi ne rashin daidaiton layi. Yankin Yankin-layi da dogo da gajere na layin, duk waɗannan an yi su ne da allon kewaya na wayoyi. Saboda, mai karba mai kara yanayin-yanayin ne, ma'ana, tsakanin layuka biyu na siginar yanayin daban an fadada kuma siginar yanayin su daya zuwa kasa, ba tare da la’akari da yawan tsangwama ba, wanda aka biya zai zama mai karawa. Alamar tsangwama ta waje ita ce rawar layin biyu a kan layi a lokaci guda, layukan biyu bayan rikici iri ɗaya, a siginar katsalandan ta al'ada iri ɗaya ce, a kan mai karɓar yanayin bambanci za a cika ta. Wayoyi biyu, duk da haka, idan tsayin ya bambanta, digiri daban, tsarin wayoyi daban, nisan da yake da alaƙa da siginar ƙasashen ya bambanta, don haka layin biyu, wanda siginar kutse ta yanayin yau da kullun ya samar shine banbancin tsakanin mai girma da low, isa mai karɓar siginar yanayin bambanci ba za'a cika shi ba, ƙirƙirar siginar tsangwama. Daidaitaccen kwamitin kwararru suna da alama daidaita ma'aunin, musamman masu sha'awar, saboda yana wakiltar mafi ikon hana kutse.

Hoto 4 - layi zuwa layi rashin daidaituwa yana haifar da tsangwama ba zai iya daidaitawa ba

Gabaɗaya, don kariyar ƙaruwa, ta hanyar ƙirƙirar haɓaka mawuyacin halin rashin nasara. A gaban injiniyoyin cibiyar sadarwa, na'urar kariya ta karuwa ba ta tallafawa mahaɗin mai sauri. Lokacin karɓar dukkanin cibiyar sadarwar, muddin saurin yana gudu da sauri, bincika da farko ko shigar SPD ko a'a. Ya zama aikin yau da kullun don dubawa. A gaban injiniyoyin SPD, Ethernet SPD ɗin su ta hanyar ƙirar ƙwararrun masarufi da sifofin sadarwa masu kyau. Yayi kyau amma wannan kawai don kariyar kariyar kanta, dangane da karɓar tashar mita ɗari, na'urar kariyar ƙaruwa tana ɗaukar albarkatun cibiyar sadarwa da yawa.

Hoto 5 - SPwararren SPD kuma yana ɗaukar albarkatun cibiyar sadarwa

Don haka, duk sigogin gwaji na na'urar kariya ta karu, a lokaci guda wanda yake ba da mahimmanci ga sakamakon gwajin ya cancanci, kulawa don haɗawa cikin duk tashar da ta cancanci yin hukunci nawa alawus? Thearin tazara bayan girka dukkan aikin yarda, zai zama mafi cancanta.

Ethernet Kariyar Mai Tsare (na'urar kariyar kariya) sigogin Gwaji (Sashe na III) - G.igabit Ethernet ya karu da gwajin mai kariya

1. Shirye-shiryen gwaji

(1) Shirye-shiryen kafin gwaji, don gwajin layin tsalle, manyan masana'antun kera kayan kariya zasu sami kayan aiki tare da layin tsalle, wanda za'a yi amfani dashi don haɗa aikin kera kayan kariya da kuma layin an katse. Batu na gaba zai zama na musamman. Muna amfani da layin gwajin kayan aikin gwajin layin misali.

(2) Mun zaɓi waya mai tsalle zuwa mita ko mita biyu ko kuma don haka, don haka muke haɗa na'urar kariya ta ƙaruwa, bayan samuwar gwajin sigogin gwaji ya zama daidai, saboda kebul ɗin haɗin haɗi sun yi gajarta sosai na iya haifar da wasu ma'auni ƙimar gwaji, asarar dawowa, alal misali, zai fi girma saboda layukan sun yi gajarta.

(3) Zaɓi daidaitaccen gwaji, zaɓi daidaitaccen amfani 1000 base-t da na ƙasa GB50312-2016. Abubuwan da aka ƙaddara 1000 base-t yana cikin ra'ayi na aikace-aikace na musamman na daidaitaccen 1000 Mbps, cat 5e GB50312-2016 azaman ƙirar 5e na nau'ikan ƙirar Ethernet, a lokacin karɓar, ƙimar daidaitaccen ƙimar 1000 m - 2.5 Gbps, protectionariyar kariyar ƙaruwa idan samun damar karɓar hanyar haɗin, ta wannan mizanin. Aƙarshe GB50312-2016 cat 6 na tallafawa saurin haɗin mahaɗi mafi faɗi: 1000 m - 5 Gbps, na'urar kariya ta ƙaruwa ta asali. Don haka dole ne masana'antun kariya masu karuwa su bayyana, haduwa gwargwadon ma'aunin gigabit net 1000 base-t, ko kuma gamsar da duk hanyar watsa Gigabit.

Valuesimar gwajin na'urar haɓaka da ke ƙaruwa a ƙarƙashin daidaitattun sakamako iri ɗaya ne, kowane daidaitaccen canji a cikin haruffa daban-daban tare da iyakar ƙimar ƙimar mitar mitowa.

2. Gigabit cibiyar sadarwar haɓaka kayan aikin gwajin kariya.

Don amfani da daidaitaccen 1000 base-t da GB50312-2016 cat 5e CH bambanci na gwaji.

(1) Asarar sakawa

Biyu na daidaitaccen saka asarar IL kwatanta

Daga ma'anar bincike, layuka guda huɗu na duk asarar shigarwar zasu iya biyan bukatun daidaitattun, ƙasa da ƙayyadadden ƙayyadaddun ƙimar darajar layin jan, don kula da izini na asarar shigarwar 21.5 dB, wannan ƙimar a shigarwar injiniya a nan gaba, don danganta tsayi yana da mahimmancin mahimmanci. Asarar shigarwar buƙatu ne na haɗin kai, har ma da iyakoki daban-daban.

Bayan haka, masu kera na'urorin kariya na karuwa da ake yiwa lakabi da shigar shigar mai kariya ta Ethernet kamar haka: 0.5 dB da 0.5 dB / 100m, takamaiman bayani dalla-dalla, gwajin ba zai sami irin wannan sakamakon ba, za a iya ganin fitowar ta gaba kawai layin tsalle kawai, asarar madaidaiciya mai tsayin mita 1 mai tsayi shine 0.5 dB / 100 MHz, har ma da na'urar kariya mai karuwa. don haka bayar da shawarar masana'antun na iya teburin 0.5 dB / 10 MHz ko 2.5 dB / 100 MHz.

(2) Mabudin hanya a kusa da ƙarshen GABA

Biyu na daidaitaccen ƙarshen ƙarshen crosstalk NEXT kwatanta

Ingantaccen gigabit Ethernet kariyar kariya, duk kusa-karshen crosstalk cikin iyaka don tantance ƙimar sama da layin ja. Rashin cancantar Ethernet SPD, wasu layukan fiye da, hukuncin jan layi. Dole ne mu kula da sakamakon gwajin, sigogin alawus ga duk tashar. No.2, mitar mitar 12,4MHz da 2.8dB (ƙimar da ke ƙasa da 3dB), a nan ana buƙatar cikakken siginar-da-amo don ƙayyade sakamakon gwajin ACR.

(3) Dawowar asara RL

Dawowar asarar RL kwatanta

Muna iya ganin cewa No.2, kuma a cikin mitar mitar 100MHz da 0.6dB (ƙimar da ke ƙasa da 3 dB), a nan kuma ana buƙatar cikakken siginar-da-amo don ƙayyade sakamakon gwajin ACR.

Wanda ya cancanci yin hukunci akan layin ya banbanta, hukunci daban-daban na samfuran guda, don GB50312-2016 ba matsaloli uku bane kai tsaye zasu iya tantance sigogin watsawa wadanda basu cancanta ba, gwada wannan samfurin kuma mun sha bamban da gwajin samfurin walƙiya, da amfani da Ka'idar tashar watsa labarai 3 db, wannan gwajin gwajin SNR, muddin siginar zuwa yanayin amo ta cika bukatun, ka'idar 3 db za ta yi amfani da ita kai tsaye, ba shakka duk tsarin aiwatar da cikakken hukunci shi ne kawar da tasirin mai aiki.

(4) Sigina zuwa yanayin amo ACR-N / F.

Sakamakon siginar-zuwa-amo sakamakon gwajin SNR yana da kyau ƙwarai, ana iya gano shi azaman NEXT da RL siginar babban tasiri ne ga siginar bayanin, don haka watsawa tsakanin matsalar 3 db na iya ƙayyade sigogi uku don mahimmanci ta hanyar.

(5) Wayoyin zane na kebul na hanyar sadarwa

Sakamakon wayoyi na sakamakon gwaji yana amfani da kebul na cibiyar sadarwa daban-daban

Bugu da kari muna ganin zane na wayoyi. Abubuwan haɗin na'urar walƙiya na yau da kullun, ana amfani dasu galibi biyu akan layin, 1/2, 3 / 6.Yi amfani da tsoffin katoji biyu akan layi. Ana amfani da layuka biyu na sauri mai sauri, matsakaiciyar-sauri da mahada mai sauri a yanzu, zamuyi kokarin amfani da nau'i-nau'i na kariya na layi guda huɗu da kuma ci gaba da saurin watsa zane na layi.

Garkuwar Layer. Na'urar kariya game da kariyar karafa ce ta karfe don kariya, yakamata a zabi tsarin kariya, ta hanyar buga kwalliyar da ke waje da kyau, a kare tasirin gaske, a bude layukan watsa za su sami damar tsoma baki. Lokacin gwaji, za a cika na'urar kariya ta karu a lokaci guda, gwajin watsawa kuma.

Ethernet Surge Protector (PoE Surge kariya na'urar) sigogi Gwaji (Sashe na IV) - qualityimar ƙimar musamman ta layin tsalle

1. Ba a kula da ingancin tsalle tsalle ta SPD Manufacturer

Bari muyi magana game da gajeren kebul na hanyar sadarwa wanda ke haɗa mai haɓaka Ethernet. A baya mun ambata yawancin sigogin watsawar Ethernet SPD na ƙira da matsalolin gwaji. Bayyana mummunan ƙirar kayan kariya na ƙaruwa wanda ya haifar da ƙarancin watsa hanyar sadarwa. Bugu da kari, har yanzu akwai wasu sassa don sauƙaƙe kawo iyakance sigogi, shi ne kebul ɗin wanda masana'antar SPD ta bayar, nuna kamar ƙasa.

2. Ingancin daban-daban masu tsalle

A cikin wannan na'urar da ke ƙarƙashin gwaji (DUT), gabaɗaya akwai layin tsalle wanda mai masana'antar SPD ya bayar, lambar alamar cat6 ko cat7 akan layin. Mun sayi wasu layin alama don gudanar da wannan gwajin.

Tebur na layin tsalle daga masana'antun daban

Nau'in tsalle daga masana'antun daban

Muna kwatanta maɓallan maɓalli guda uku na watsawa, layin tsalle bisa ga nau'in kebul cat6 na ƙasa GB50312-2016 cat6 CH don gwadawa, sakamakon gwajin an jera su kamar yadda ke ƙasa, kawai layin tsalle (kebul) wanda masana'antar SPD ta bayar ba ta cancanta ba.

Bari mu ga fasalin fasalin maɓallan watsa abubuwa uku

Rashin shigarwa IL kwatanta

Kusa-karshen crosstalk KASANCE kwatancen

Dawowar asarar RL kwatanta

Wannan wayar tsalle ta cika sigogin asarar-asarar albarkatun tashar 100 m, babu wani alawus. Tabbas akwai wasu kamar SNR, siginar-da-amo rabo, duka ƙarfi kusa-karshen crosstalk duka ƙarfi, da dai sauransu. Tsakanin waɗannan sigogi da maɓallan maɓalli uku, suna da alaƙa daidai, a nan ba maimaita bincike.

Ta gwajin kamar yadda kake gani, ɗayan mafi tsada UGREEN alama mai tsalle, a ƙarƙashin ƙirar cat6 ta ƙasa, yana nuna sakamako mai kyau fiye da wanda aka shigo da shi. Asali kayan haɗi ne masu sauƙin gaske, me yasa masana'antun SPD suke da wuyar aiwatar da ƙwarewar ƙwarewa? ko masana'antun SPD ba su bincika kuma sun gwada waɗannan wayar tsalle da aka saya daga kasuwa ba. Wadannan batutuwan suna da matukar daraja tunani.

3. Tasirin ta waya mara tsalle lokacin gwajin SPD

Da zarar kayi amfani da wajan tsallake wanda bai cancanta ba, wanda aka sanya SPD a cikin tashar, shima yana da matukar tasiri, koda kuwa Ethernet SPD ta hanyar tsari mai kyau, har zuwa bukatun saurin hanyar sadarwa na gigabit, zai sa sakamakon saitin ya canza saboda amfani da wannan wayar ta tsalle.

A ƙasa don daidaitaccen gwajin 1000 base-t don amfani da ƙwararren gigabit Ethernet SPD, yayin amfani da waya tsalle da ƙirar tsalle marasa cancanta don gwaji, zai haifar da ƙwarewa biyu masu ƙwarewa da cancanta. Zuwa nau'ikan watsa abubuwa guda uku, misali, wadannan suna lissafin kwatancen gwaji na zane-zane.

Rashin sakawa IL

Kusa-karshen crosstalk NA GABA

Komawar hasara RL

zamu iya gani daga kwatancen adadi, a bayyane yake cewa jarabawa biyu daga waɗanda suka cancanta ne zuwa waɗanda basu cancanta ba. Ya kamata ya zama bayyananne: Wajan tsere na masana'antar SPD a matsayin ɓangare na SPD, dole ne ya shiga gwajin SPD tare, ba tare da la'akari da SPD ko tsalle waya ba muddin sigogin tashar haɗin yanar gizo ba su cancanta ba, a ƙarshe zai ƙayyade SPD ɗin bai cancanta ba. Don haka dole ne masana'antun SPD su bincika kuma su gwada wayar tsalle wacce aka siya daga kasuwa.

Learnara koyo game da Gigabit Ethernet Surge Protector, danna shafin yanar gizon

https://www.lsp-international.com/power-over-ethernet-poe-surge-protector/

Detailsarin bayani game da Na'urar Kariyar Kariya ta PoE DT-CAT 6A / EA, danna shafin yanar gizon

https://www.lsp-international.com/product/dt-cat-6a-ea/

LSP na iya samar da qualifiedarfin overarfi akan Ethernet PoE Surge Protection Na'urar DT-CAT 6A / EA, kuma TUV Rheinland ne ya tabbatar da hakan.

Takardar shaidar TUV, gwada bisa daidaitaccen EN 61643-21: 2001 + A1 + A2

Tabbatar da takardar shaidar: https://www.certipedia.com/certificates/50458142?locale=en

Takardar shaidar CB, gwada bisa ga IEC 61643-21: 2000 + AMD1: 2008 + AMD2: 2012

Tabbatar da takardar shaidar: https://www.certipedia.com/certificates/05002823?locale=en