1. Ts'ebetso ea ts'ebetso ea BOB:
1. BOB ea ho fana ka ts'ebetso ea HDV Phoelectron Technology LTD:
Haholo-holo ke ho lokisa matla a optical le karo-karolelano ea ho felisoa ha 'mapa oa mahlo oa pheletso ea phetisetso,' me moamoheli o hloka ho lekanya kutloelo-bohloko ea hae le tlhahlobo ea RSSI.
BOB commissioning index:
| teko | paramethara | litlhaloso | unit | litlhaloso | |||
| tshebetso | tšobotsi | tlhaloso | Min. | Tlanya. | Max | ||
| Karolo ea ho lokisa liphoso | TxPower | Tx matla a ho fetisa | 1.2 | 1.5 | 1.8 | dBm | Bakeng sa tekanyo e khethehileng, index e ka ntlafatsoa ho latela ts'ebetso ea BOSA |
| ExtRatio | karolelano ea ho fela | 9.5 | 12 | 14 | dB | ||
| EyeCross | mateano a setšoantšo sa mahlo | 45 | 50 | 55 | ％ | ||
| RxPoCalPoint_0 | The Rx calibration boemo ba pele ba paramethara | -10 | -10 | -10 | dB | ||
| RxPoCalPoint_1 | Rx calibration boemo ba paramethara ea bobeli | -20 | -20 | -20 | dB | ||
| RxPoCalPoint_2 | The Rx calibration boemo ba boraro parameter | -30 | -30 | -30 | dB | ||
| Karolo ea teko | TxPower | Tx matla a ho fetisa | 0.5 | 2.5 | 4 | dBm | Bakeng sa tekanyo e khethehileng, index e ka ntlafatsoa ho latela ts'ebetso ea BOSA |
| TxPo_DDM | Ho fetisa ho shebella matla a optical | 0.5 | 2.5 | 4 | dB | ||
| DiffTxPower | Ho fetisa ho beha leihlo phapano ea matla a optical | -1 | 0 | 1 | ％ | ||
| ExtRatio | Emission extinction ratio | 9 | 11 | 14 | dB | Bakeng sa tekanyo e khethehileng, index e ka ntlafatsoa ho latela ts'ebetso ea BOSA | |
| EyeCross | mateano a setšoantšo sa mahlo | 45 | 50 | 55 | dB | ||
| EyeMargin | Magin oa Setšoantšo sa Mahlo | 10 | 10 | 10 | dB | ||
| TxCurrent | tlhahiso ea hona joale | 180 | |||||
| TotalCurrent | kakaretso ea hona joale | 100 | 250 | 300 | |||
| Kutloisiso | kutloelo-bohloko | -27 | -27 | ||||
2. Setšoantšo sa khokahano sa BOB sa HDV Phoelectron Technology LTD.:
Setšoantšo se tloaelehileng sa khokahanyo ea tlhahlobo ea BOB, tlhahlobo ea tsela e le 'ngoe, khokahanyo e rarahaneng ea kantle, attenuator, mitha ea phoso, mitha ea matla, CDR le lisebelisoa tse ling li hloka ho rekoa ka thoko. Sebaka se seng le se seng sa mosebetsi se hloka komporo ho tšehetsa tlhahlobo.
1. Kenyelletso ea lisebelisoa tsa tlhahlobo ea ES-BOBT8 letoto la BOB:
2. E ka ts'ehetsa liteishene tse fihlang ho 8 bakeng sa tlhahlobo ea BOB, Metara ea matla a ka hare a kopantsoeng le attenuator, a ka qeta ho romela le ho amohela ho senyeha le ho hlahloba ka nako e le 'ngoe;
3. Ts'ebetso e kopantsoeng ea BERT le 2xSFP + sebopeho sa mohloli oa leseli, e ka tšehetsa 1.25G ~ 10G optical signal output, ho fana ka mohloli oa leseli la leseli bakeng sa tlhahlobo ea maikutlo ea BOB;
4. Integrated CDR Trigger out, ka hare-hare e ikemetseng ea ho tsosolosa pontšo ea oache, e ka fana ka pontšo ea oache e hlokahalang bakeng sa tlhahlobo ea setšoantšo sa mahlo;
5. Metara ea matla a ho lekanya e ikemetseng e ka fana ka mokhoa o tloaelehileng oa ho lemoha matla a optical calibration.
Sistimi ea tlhahlobo ea ES-BOBT8 Series BOB e fana ka sete e felletseng ea litharollo tsa lisebelisoa tsa liteko, tse ka fanang ka boholo ba liteishene tse 8 tsaONUBOB teko. Mohloli oa BER le mohloli oa leseli, attenuator, meter ea matla, karohano ea wavelength, switch optical le lisebelisoa tse ling li kenyelelitsoe sesebelisoa se le seng, ka software ea setsebi sa BOB test automation, e ka fana ka tharollo e feletseng ea liteko tsa BOB.
2,Molao-motheo oa ts'ebetso ea Hardware:
Karolo ea letoto la ES-BOBT8 la litsamaiso tsa lisebelisoa tsa BOB:
1.Ts'ebetsong ea tlhahiso, hlahloba hore naONUmatla a khanyang a optical port a tloaelehile ka nako ea sebele
2.Hlahloba hore na boleng ba matla a optical bo amogetsweng ke baONUOptical port e nepahetse.
Molao-motheo oa ts'ebetso ea sistimi ea Hardware:
1. Software e ka holimo ea k'homphieutha tsamaisong ea ts'ebetso e hokahane le sebopeho sa USB sa SCM U1 (mohlala C8051F340) ka sebopeho sa USB tsamaisong ea teko ho lemoha ho hokahanya ha mochine oa motho;
2. SCM U1 (mohlala C8051F340) e laola U3 (bit error detector chip VSC8228, generator signal), OLT module (PON SFP), ADC (e kentsoeng ke ADL5303 le AD5593), le DAC (e kentsoeng ke MAX4230 le AD55IC3) bese.
3. The bit error detector chip VSC8228 e romela letšoao la mofuta o boletsoeng oa khoutu le tekanyo ho ea ka taelo, 'me e khanna mochine oa OLT ho romela letšoao la optical la mofuta o lumellanang le khoutu le tekanyo ka sebopeho sa SerDES. Bolelele ba maqhubu a OLT e rometsoeng ke 1490nm, 'me leseli le arotsoe ka tse robeli ka sekhahla. Kamora hore VOA ea taolo ea DAC e fokotse matla a optical a boletsoeng, e hokahane leONUboema-kepe ba mahlo.ONUe bala matla a optical a lumellanang 'me a e bapisa le boleng ba sebele.
4. Mokhoa oa ts'ebetsong oa DAC: SCM U1 (mohlala C8051F340) e romela data ea DAC ho AD5593 ka bese ea I2C, boema-kepe ba I/O ba AD5593 bo hlahisa lets'oao la motlakase, 'me lets'oao la motlakase le hlahisoa ka amplifier ea ts'ebetso MAX4230, e sebelisoang ho "voltage input pin" ea VOA attenuator, e le hore leseli le hlahisoang ke mochine oa PON OLT le fokotsehe ho matla a optical a boletsoeng, ebe o hokahanngoa le boema-kepe ba optical port.ONU.
5. Mokhoa oa ts'ebetsong oa ADC: Ka mor'a leseli le hlahisoang keONUe fumanoa ke PD (photodetector), PD e hlahisa maqhubu a matšoao a boholo bo fapaneng ho ea ka matla a lets'oao la optical, 'me e fetoloa motlakase o nang le palo e pharaletseng ea lipalo le ho nepahala ho phahameng ka mochine oa logarithmic ADL5303. Boleng bo amoheloa ke AD5593 mme bo fetoloa lets'oao la dijithale ka bese ea I2C ka SCM U1 (mohlala C8051F340) mme qetellong e hlahisoa ho sebopeho sa khomphutha se amohelang.