1. Kutumiza kwa BOB:
1. BOB kutumiza ndondomeko ya HDV Phoelectron Technology LTD:
Ndiko kukonzanso mphamvu ya kuwala ndi chiŵerengero cha kutha kwa mapu a diso la mapeto otumizira, ndipo wolandirayo amayenera kuwongolera kukhudzika kwake ndi kuwunika kwa RSSI.
BOB commissioning index:
| mayeso | parameter | mfundo | unit | ndemanga | |||
| ntchito | khalidwe | kufotokoza | Min. | Lembani. | Max | ||
| Debugging gawo | TxPower | Tx mphamvu yotumizira | 1.2 | 1.5 | 1.8 | dBm | Pakuyezera kwina, indexyo imatha kukonzedwa molingana ndi momwe BOSA imagwirira ntchito |
| ExtRatio | chiŵerengero cha kutha | 9.5 | 12 | 14 | dB | ||
| EyeCross | mphambano ya chithunzi cha maso | 45 | 50 | 55 | ％ | ||
| RxPoCalPoint_0 | The Rx calibration woyamba parameter chikhalidwe | -10 | -10 | -10 | dB | ||
| RxPoCalPoint_1 | Rx calibration gawo lachiwiri la parameter | -20 | -20 | -20 | dB | ||
| RxPoCalPoint_2 | The Rx calibration wachitatu parameter chikhalidwe | -30 | -30 | -30 | dB | ||
| Kuyesa gawo | TxPower | Tx mphamvu yotumizira | 0.5 | 2.5 | 4 | dBm | Pakuyezera kwina, indexyo imatha kukonzedwa molingana ndi momwe BOSA imagwirira ntchito |
| TxPo_DDM | Kutumiza kuyan'anila mphamvu ya kuwala | 0.5 | 2.5 | 4 | dB | ||
| DiffTxPower | Kutumiza kuyan'anila kusiyana kwa mphamvu ya kuwala | -1 | 0 | 1 | ％ | ||
| ExtRatio | Emission extinction ratio | 9 | 11 | 14 | dB | Pakuyezera kwina, indexyo imatha kukonzedwa molingana ndi momwe BOSA imagwirira ntchito | |
| EyeCross | mphambano ya chithunzi cha maso | 45 | 50 | 55 | dB | ||
| EyeMargin | Chithunzi cha Eye Magin | 10 | 10 | 10 | dB | ||
| TxCurrent | emission current | 180 | |||||
| TotalCurrent | zonse zapano | 100 | 250 | 300 | |||
| Kumverera | kumva | -27 | -27 | ||||
2. Chithunzi cholumikizira cha BOB cha HDV Phoelectron Technology LTD.:
Chithunzi cholumikizira cholumikizira cha BOB, kuyesa kwa njira imodzi, kulumikizana kwakunja kovutirapo, chowongolera, mita yolakwika, mita yamagetsi, CDR ndi zida zina ziyenera kugulidwa padera.Malo aliwonse ogwirira ntchito amafunikira kompyuta kuti ithandizire mayesowo.
1. Kuyambitsa zida zoyesera za ES-BOBT8 mndandanda wa BOB:
2. Ikhoza kuthandizira mpaka 8 njira zoyesera BOB, Internal Integrated mphamvu mita ndi attenuator, akhoza kumaliza kutumiza ndi kulandira debugging ndi kuyesa nthawi yomweyo;
3. Ntchito yophatikizika ya BERT ndi 2xSFP + yowunikira kuwala, ikhoza kuthandizira 1.25G ~ 10G optical signal output, kuti apereke gwero la kuwala kwa chizindikiro cha BOB sensitivity test;
4. Integrated CDR Trigger out, mkati mwawokha wodzipangira wotchi yobwezeretsa chizindikiro, ikhoza kupereka chizindikiro cha wotchi yofunikira poyesa chithunzi cha diso;
5. Meta yamagetsi yodziyimira yokha imatha kupereka kuzindikira kwamphamvu kwamagetsi.
ES-BOBT8 mndandanda wa BOB test system imapereka mayankho athunthu a zida zoyesera, zomwe zimatha kupereka njira zopitilira 8 za mayeso a ONU BOB.Woyesa BER ndi gwero lowala, attenuator, mita yamagetsi, gawo la kutalika kwa mawonekedwe, optical switch ndi zida zina zimaphatikizidwa mu chipangizo chimodzi, ndi pulogalamu yaukadaulo ya BOB test automation, imatha kupereka mayankho athunthu a mayeso a BOB.
2,Mfundo yogwiritsira ntchito hardware:
Udindo wa ES-BOBT8 mndandanda wamakina a BOB hardware:
1.Popanga, fufuzani ngati mphamvu yowala ya ONU yowala ndi yachilendo mu nthawi yeniyeni
2.Fufuzani ngati mphamvu yolandira kuwala yowerengedwa ndi ONU Optical port ndi yolondola.
Mfundo yogwira ntchito ya hardware system:
1. Mapulogalamu apamwamba apakompyuta mu makina ogwiritsira ntchito amalumikizidwa ndi mawonekedwe a USB a SCM U1 (chitsanzo C8051F340) kudzera mu mawonekedwe a USB mu dongosolo loyesera kuti azindikire kulumikizana kwa makina a munthu;
2. SCM U1 (model C8051F340) imayendetsa U3 (bit error detector chip VSC8228, jenereta ya chizindikiro), gawo la OLT (PON SFP), ADC (yoyendetsedwa ndi ADL5303 ndi AD5593), ndi DAC (yoyendetsedwa ndi MAX4230 ndi AD5593) basi.
3. Chojambulira cholakwika pang'ono chip VSC8228 chimatumiza chizindikiro cha mtundu wamtundu wotchulidwa ndi mlingo malinga ndi malangizo, ndikuyendetsa gawo la OLT kutumiza chizindikiro cha kuwala kwa mtundu wofanana wa code ndi mlingo kupyolera mu mawonekedwe a SerDES.Kutalika kwa mawonekedwe a OLT omwe atumizidwa ndi 1490nm, ndipo kuwala kumagawidwa m'magawo asanu ndi atatu kupyolera mu splitter.Pambuyo pa DAC control attenuator VOA imachepetsa mphamvu yowunikira, imalumikizidwa ndi doko la ONU.ONU imawerenga mphamvu yofananira ya kuwala ndikuiyerekeza ndi mtengo weniweni.
4. Njira yogwiritsira ntchito DAC: SCM U1 (model C8051F340) imatumiza deta ya DAC ku AD5593 kudzera mu basi ya I2C, doko la I/O la AD5593 limapanga chizindikiro chamagetsi, ndipo chizindikiro chamagetsi chimapangidwa kudzera pa amplifier MAX4230, yomwe imagwiritsidwa ntchito pa voteji yolowetsa pini ya VOA attenuator, kotero kuti kuwala kotulutsidwa ndi gawo la PON OLT kumachepetsedwa ndi mphamvu yowunikira, ndiyeno kulumikizidwa ku doko la kuwala la ONU.
5. Njira yogwiritsira ntchito ADC: Pambuyo pa kuwala kotulutsidwa ndi ONU kuzindikiridwa ndi PD (photodetector), PD imapanga mafunde amtundu wamitundu yosiyanasiyana molingana ndi mphamvu ya chizindikiro cha kuwala, ndipo amasandulika kukhala magetsi okhala ndi chiwerengero chochuluka. ndi kulondola kwapamwamba kudzera pa logarithmic converter ADL5303.Mtengowu umadziwika ndi AD5593 ndikusinthidwa kukhala chizindikiro cha digito kudzera mu basi ya I2C kudzera mu SCM U1 (chitsanzo C8051F340) ndipo pamapeto pake imawonetsedwa pamakompyuta apakompyuta.