Jun 20, 2021
di fכs step fכ sεlekt wan OPM nכ de kכmpεr spεsifikεshכn dεm — na fכ כndastand us wevlεngth yu fayba sistεm dεm de wok pan. Difrɛn sistɛm dɛn de yuz difrɛn wɛvlɛnj, ɛn OPM kalibreshɔn kɔv dɛn difrɛn akɔdin to dat. Yuz di rɔng wevlɛnj档位 de prodyuz ridin ɔf bay 10% to 20%.
di fכs step fכ sεlekt wan OPM nכ de kכmpεr spεsifikεshכn dεm — na fכ כndastand us wevlεngth yu fayba sistεm dεm de wok pan. Difrɛn sistɛm dɛn de yuz difrɛn wɛvlɛnj, ɛn OPM kalibreshɔn kɔv dɛn difrɛn akɔdin to dat. Yuz di rɔng wevlɛnj档位 de prodyuz ridin ɔf bay 10% to 20%.
Di wevlɛnj dɛn we kɔmɔn pas ɔl na kɔmyunikeshɔn sistem na 1310nm ɛn 1550nm (singl-mɔd fayba lɔw-lɔs winda) ɛn 850nm (multimode fayba). Data sɛnta dɛn de yuz 850nm VCSEL sɔs mɔ ɛn mɔ fɔ shɔt-rich transmishɔn. PV plant fayba kɔmyunikeshɔn link dɛn tipikli yuz 1310nm. If DWDM (dense wavelength division multiplexing) sistem dɛnsɛf nid fɔ tɛst, dɛn nid 1625nm wevlɛnj档位 — dɛn kɔl 1625nm di ‘out-of-band wavelength’ ɛn dɛn kin yuz am fɔ tɛst EDFA pefɔmɛns na DWDM sistem dɛn we nɔ de ambɔg di savis.
Di PK56A siriɔs sɔpɔt sɛvin wɛvlɛnj sɛtin dɛn we de kɔba 850nm, 1310nm, 1490nm, 1550nm, 1610nm, 1625nm, ɛn ɔda men kɔmyunikeshɔn wɛvlɛnj dɛn. Dis min se ilɛk us wɛvlɛnj yu fayba sistɛm de yuz, di PK56A kin mach am dairekt wan — nɔ ɔda sɛlɛkshɔn kɔnsidareshɔn nid.
Di OPM rɛnj de sho aw strɔng layt signal i kin mɛzhɔ. Tu smɔl rɛnj kin mek i pwɛl di ditektɔ wit strɔng layt; tu big rεnj nכ kin mεzj wik layt. Bɔt rɛnj nɔto ɔltɛm ‘di big di bɛtɛ’ — divays dɛn we gɛt big rɛnj kin tipikul bulkier, mɔ dia, ɛn kin gɛt lɔwa prɛsishɔn na di lɔw-pawa ɛnd kɔmpia to divays dɛn we gɛt rɛnj-match.
Fild test optik pawa tipikli span -70dBm to +10dBm. -70dBm na di lכw sεnsitiviti limit fכ mכst risiva dεm; +10dBm na di maksimal autput fɔ mɔs layt sɔs. Di PK56A siriɔs rɛnj kɔba -70dBm to +10dBm, we de mach dis rɛnj ɛksaktɔli.
If ɔptik signal dɛn we ay-ɛnd nid fɔ tɛst (lɛk optik amplifia autput, we kin rich +20dBm), dɛn nid ɔda optik atenuator fɔ protɛkt di OPM ditektɔ. Di PK56A siriɔs ship wit wan detachable optik atenuator adapt, we de ɛkstɛnd di rɛnj to +20dBm we nid de.
Di kor difrɛns bitwin PK56B tru PK56E na rɛd layt sɔs pawa — 10mW, 2mW, 5mW, ɛn 20mW rispɛktvɔli. Rɛd layt sɔs pawa de sho aw fa i kin no ɛn aw i de wok fayn ɔnda di layt we de rawnd.
di rεd layt sכs in wok na fכ injεkt rεd layt we yu kin si (650nm) insay di fayv εn wach usay layt de lik fכ no brεk. Ay pawa min se di distans fɔ ditekshɔn fɔ lɔng ɛn fɔ mek pɔsin si am bɛtɛ ɔnda strɔng ambiɛnt layt. 2mW (PK56C) fayn fɔ shɔt-distans (1-2km) indo fayba jɔmpa tɛst, wit di lɔs pawa kɔnsɔmshɔn, di lɔngest bateri layf, ɛn di lɔs prayz. 5mW (PK56D) na di balans choice, we fit fɔ mɔs midul-distans fil tɛst. 10mW (PK56B) na fɔ lɔng-distans (3-5km) fayba link trɔbulshut. 20mW (PK56E) na profeshɔnal gred, fayn fɔ lɔng-distans (5km+) trɔnk fayba tɛst, we de kɔntinyu fɔ si klia wan ivin insay brayt ɔda kɔndishɔn.
Nɔ blaynd fɔ fala ay pawa we yu de pik. 20mW rɛd layt kin tu glaring fɔ yuz insay os, we nid fɔ protɛkt yu yay. Ɛn rɛd layt sɔs dɛn we gɛt ay pawa kin yuz mɔ pawa, ɛn dis kin mek di batri layf shɔt. Pik di rɛd layt pawa bay di lɔngest fayv distans we yu rili nid fɔ tɛst.
Di OPM ɛn rɛd layt sɔs kin intagret (ɔl-in-wan) ɔ separet — wan standalɔn OPM ɛn wan sɛpret rɛd layt pen. Ɛni we fɔ du tin gɛt gud ɛn bad tin dɛn, bɔt insay fil tɛst sɛnɛriɔ, ɔl-in-wan gɛt klia bɛnifit dɛn.
Fɔs: pɔsin kin ebul fɔ kɛr am go. Wan ɔl-in-wan na wan divays; separet min at le tu. Fil injinia dɛn kin muv bitwin tɛst pɔynt dɛn — frɔm bes steshɔn shelta to fayv distribyushɔn freym, frɔm data sɛnta Zon A to Zon B — ɛn fɔ kɛr wan less divays min wan less lod.
Sɛkɔn: opareshɔnal efyushɔn. Ɔl-in-wan nɔ nid fɔ swich bitwin OPM ɛn rɛd layt pen mɔd — wan bɔtin de togl bitwin pawa tɛst ɛn rɛd layt mɔd. We yu de sɔlv prɔblɛm wit fayv link, di standad flɔ na: tɛst pawa (ditarmin if di link nɔmal) → swich to rɛd layt mɔd (luk di brek) → fiks di brek → ritest pawa (kɔnfɛm ripa). Wit difrɛn divays dɛn, dis flɔ nid fɔ swich bak ɛn go bifo bitwin tu divays dɛn, at ɔl fɔ haf di efyushɔn.
Tɔd: kɔst. Pan ɔl we ɔl-in-wan yunit de kɔst mɔ pas wan standalɔn OPM, we yu ad di prayz fɔ wan sɛpret rɛd layt pen, di ɔl-in-wan kin shɔt. Ɛn wit wan batri nɔmɔ fɔ manej, wan chaja de we nɔ bɔku fɔ kɛr.
Fɔs: data kɔrɛleshɔn. Data we dɛn rikodɔ we dɛn de du pawa tɛst pan ɔl-in-wan kin gɛt fɔ du wit rɛd layt tɛst rizɔlt na di sem tɛst rɛkɔd. Separet divays data de split, we nid fɔ mek dɛn mach wit yu an we dɛn de du leta analisis — wan sɔs we de mek mistek.
Afta dɛn dɔn pik dɛn, di prokyumɛnt ɛn diploymɛnt faz dɛn gɛt dɛn yon trap dɛn. We yu de bay, nɔ ɛva kɔmpia prayz nɔmɔ — aks fɔ wan dɛmo yunit fɔ validɛshɔn na di sayt. Difrɛns bitwin manifakta dɛn pan rial-wɔl yus kin bi fa fawe pas difrɛns na di spɛshal shit: intafɛs padi biznɛs, fayv adapt kɔmpatibiliti, rɛd layt sɔs braytnɛs — nɔ pan dɛn tin ya de apin pan spɛshal shit bɔt ɔl de afɛkt yusabiliti dairekt wan.
We di ikwipmɛnt kam, nɔ sheb am dairekt to di wan dɛn we de wok na di fil. Mek di injinɛri supavaysa tray am fɔ wan wik, kɔnfɔm se i de wok kɔrɛkt wan wit di sayt in tipik fayv tayp ɛn di envayrɔmɛnt kɔndishɔn, dɔn ɔganayz di wokman dɛn trenin. Trenin fɔ kɔba: kɔrɛkt tɛst prosidur (wevlɛnj sɛlɛkshɔn → ɛnd-fes inspekshɔn → pawa tɛst → lɔs kɔlkyulɛshɔn → rɛd layt verifyeshɔn), data rikodin prɔsis, rizɔlt intapriteshɔn krayteria (wetin kɔstitut PASS, WƆNIN, ɛn FAIL), ɛn besik ikwipmɛnt mentenɛns.
Fɔ mek wan data manejmɛnt rijim impɔtant bak. Afta ɛni tɛst, di data fɔ go insay di injinɛri manejmɛnt sistem, we dɛn arkiv bay link nɔmba ɛn di tɛm sikyud. Jɛnɛret wan kwata fayv link wɛlbɔdi ripɔt we de list ɔl di link dɛm wit abnɔmal lɔs, sɔt bay urgency fɔ mentenɛns planin. dis de transfכm fayv mεntenans frכm riaktiv ripa to proaktiv εli wכnin — di כnli we we tεst data de rili delivεr valyu. View the PV Test Instruments Collection
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Gɛt wan Fri KɔtPK56A optical power meter, PK56B-E integrated OPM + red light source (2mW/5mW/10mW/20mW) — five series covering the complete needs from basic optical power testing to long-distance red-light fault location. Seven-wavelength coverage, multi-interface compatibility, wide-temperature design — designed for field testing and acceptance at PV plants, telecom base stations, and data centers.
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