Jun 15, 2020, ɛn di ɔda wan dɛn
Di kɔr fɔ wan sikyɔriti monitarin sistɛm na ‘we pɔsin kin si ɛn klia.’ Wan nɛtwɔk kebul we dɛn nɔ tɛst min se yu nɔ no if i kin stebul transmit HD vidio signal dɛn, if i kin wok ɔnda PoE pawa mɔd, ɔ if brek ɔ intafɛreshɔn sɔs dɛn de na di midul.
Di kɔr fɔ wan sikyɔriti monitarin sistɛm na ‘we pɔsin kin si ɛn klia.’ Wan nɛtwɔk kebul we dɛn nɔ tɛst min se yu nɔ no if i kin stebul transmit HD vidio signal dɛn, if i kin wok ɔnda PoE pawa mɔd, ɔ if brek ɔ intafɛreshɔn sɔs dɛn de na di midul. Insay sikyɔriti kebul injinɛri, nɛtwɔk tɛst nɔto ‘ɛkstra stɛp’ — na di las layn fɔ difens fɔ dilivri kwaliti.
Wan mistek we pipul dɛn kin tink na dat, dɛn kin tɛst nyu nɛtwɔk kebul dɛn na faktri ɛn dɛn nɔ nid fɔ tɛst dɛn mɔ. In rialiti, kebul kin damej we dɛn de transpɔt, stɔrɔj, instɔleshɔn, ɛn tɛmnɛshɔn — pasmak bɛnd rayus, pul fɔs, skrap frɔm shap ed, lɔs RJ45 krimp — ɔl dis kin silently degrad link pefɔmɛns. Bay di tɛm we pɔsin we de yuz am ripɔt se ‘di kamɛra pikchɔ de stɔp’ ɔ ‘di PTZ nɔ de rɔta,’ bɔku tɛm i nɔ kin izi fɔ tray fɔ no usay i kɔmɔt.
PoE (Power over Ethernet) na wan pan di teknɔlɔji dɛn we impɔtant pas ɔl na di sikyɔriti monitarin sistɛm dɛn. Kamɛra dɛn kin transmit ɔl tu di data ɛn pawa oba wan nɛtwɔk kebul, we kin mek dɛn nɔ gɛt di kɔst ɛn kɔmplisiti fɔ indipɛndɛnt pawa kebul. Bɔt, PoE de put fa ay dimand pan link kwaliti pas pure data transmishɔn — inɔf pawa kin mek kamɛra dɛn ripit ripit ristart, display abnɔmal imej, ɔ ivin go kɔmplit ɔflayn.
PoE tɛst nɔto jɔs fɔ chɛk if di kebul de kɔndɔkt; i nid bak fɔ mɛzhɔ di sapɔt vɔlɔt, kɔrɛnt, ɛn pawa. Wan 80 mita kebul wit tin waya gej ɔ po kɔnɛkta kɔntakt rɛsistɛns kin mek di PoE vɔlɔt na di kamɛra ɛnd fɔ drɔp dɔŋ di ɔpreshɔn trɛshɔld. Na FangService in nɛtwɔk tɛst inschrumɛnt layn, di PK69 siriɔs nɛtwɔk injinɛri tul de sɔpɔt PoE pawa tɛst, we de sho rial-taym vɔlɔt, kɔrɛnt, ɛn pawa data fɔ ɛp injinia dɛn fɔ no kwik kwik wan if di link mit di PoE pawa rikwaymɛnt dɛn.
Insay sikyɔriti monitarin injinɛri, di tin we dɛn nid fɔ tɛst mɔ na fɔ chɛk di kamɛra in vidio signal. Di tradishɔnal we fɔ du am na fɔ kɔnɛkt di kamɛra to monita ɔ kɔmpyuta ɛn jɔj wit yu an if di pikchɔ klia ɛn di kɔlɔ dɛn nɔmal. Dis we ya nɔ de wok fayn ɛn i de abop pan di pɔsin we de tɛst in sɔbjɛktiv jɔjmɛnt.
Mɔdan nɛtwɔk injinɛri tul dɛn de intagret vidio signal tɛst fɛnshɔn dɛn. FangService in PK68 siriɔs prɔfɛshɔnal vidio tɛsta de sɔpɔt IPC, AHD, TVI, ɛn CVI bɔku kɔaksial HD vidio fɔmat dɛn, ɛn i kin sho di kamɛra imej dairekt wan we i nɔ kɔnɛkt to kɔmpyuta, wit ɔvlay analisis tul dɛn (lɛk kɔlɔ analisis, greyskayl tɛst, ɛn distɔshɔn ditekshɔn). Di PK67 siriɔs wristband injinɛri tul ɛn PK66 siriɔs pɔtabl injinɛri tul fayn fɔ smɔl instɔleshɔn sɛnɛriɔ, we de alaw wan pɔsin fɔ kɔmplit tɛst.
Insay sikyɔriti monitarin sistɛm, PTZ (Pan-Tilt-Zoom) kɔntrol na di men difrɛns bitwin ‘kin si’ ɛn ‘kin yuz.’ PTZ kɔntrol signal dɛn kin tipikli transmit via RS485 bɔs — tu ɔda kɔntrol waya dɛn (ɔ idɔl waya pe dɛn we dɛn maltipleks insay di nɛtwɔk kebul). RS485 waya mistek (lɛk A/B layn rivasal), mis tɛminal rɛsistɔ, ɔ baud ret mismatch ɔl kin mek PTZ kɔntrol fel ɔ latɛns.
FangService in nɛtwɔk tɛst inschrumɛnt layn — di PK69 ɛn PK68 siriɔs — ɔl tu de sɔpɔt RS485 PTZ kɔntrol tɛst, we ebul fɔ sɛn kɔntrol kɔmand ɛn verify PTZ rispɔns. Dɛn de sɔpɔt prɛs sɛt pozishɔn sɛtin ɛn rikɔl, ɛp injinia dɛn fɔ fɛn PTZ kɔntrol fɔlt dɛn kwik kwik wan. Insay big sikyɔriti prɔjek, PTZ kɔntrol tɛst na di tin we izi fɔ fɔgɛt bɔt we kin apin mɔ — if dɛn nɔ kin ebul fɔ kɔntrol wan PTZ afta dɛn dɔn gi am, di kɔst fɔ sɔlv prɔblɛm kin pas di kɔst fɔ pul di kɔntrol layn dɛn bak.
Di prokyumɛnt kɔst fɔ nɛtwɔk tɛst tul dɛn na ɔlmost smɔl we yu kɔmpia am wit di lɔs dɛn we dɛn de mek. Wan midul-sayz sikyɔriti monitarin projɛkt kin involv dɔzɛn ɔ ivin ɔndrɛd kamɛra dɛn — if fɔ tɛst ɛni kamɛra de kɔst tɛn yuan, we wan link fɔlt we dɛn nɔ no afta dɛn dɔn deliv di prɔjek kin kɔst tawzin ɔ tɛn tawzin fɔ sɔlv prɔblɛm ɛn ripɛnt, di ikɔmik valyu fɔ tɛst de klia.
Mɔ impɔtant, tɛst data insɛf gɛt lɔng tɛm valyu. Wan link we dɛn dɔn tɛst wit rikodɔ PoE pawa paramita, vidio signal kwaliti, ɛn PTZ kɔntrol stetɔs kin asɛs kwik kwik wan we dɛn de mentenɛns am tumara bambay: ‘dis link bin gud we dɛn bin de delivr am?’. ɔ ‘dis link bin gɛt prɔblɛm dɛn we ayd we dɛn bin de sɛn am?’ Link dɛn we dɛn nɔ tɛst na, infakt, blak bɔks dɛn we dɛn de mentenɛns. FangService in nɛtwɔk tɛst inschrumɛnt layn de kɔba di kɔmplit nid frɔm besik kɔnɛktiviti verifyeshɔn to advans vidio analisis, ɛp injinɛri tim dɛn fɔ mek tɛst standad frɔm di stat fɔ wan prɔjek. View the Network Test Instruments Collection
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Gɛt wan Fri KɔtPK66 portable engineering tool, PK67 wristband engineering tool, PK68 professional video tester, PK69 full-featured network engineering tool — four series covering the complete needs from basic video testing to advanced PoE analysis. Supporting IPC/AHD/TVI/CVI multi-format coaxial HD, RS485 PTZ control, and PoE power testing, designed for installation, debugging, and maintenance of security monitoring systems.
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