Video: Dab tsi ua rau ICFR hauv cable?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
ICFR stands rau Hauv-Channel zaus teb. ICFR piav qhia qhov flatness ntawm koj 6 MHz digital channel. Thaum cov channel tsis tiaj tus, cov teeb liab digital tuaj yeem hloov pauv thiab cov khoom siv tau txais yuav muaj lub sijhawm nyuaj rau kev txiav txim siab txog cov khoom tau txais.
Yog li ntawd, dab tsi ua rau flux hauv cable?
Flux yog "txias insulator" uas txhais tau tias nws tso cai rau cov hluav taws xob tam sim no los ntawm kev sib cuag, ua rau I. R. tsis ua hauj lwm nyob rau hauv high-voltage xeem, thiab-nyob rau hauv heev mob-txawm luv. Thaum tus neeg teb xov tooj tshiab coj ntau lawm kab los ua ke, tus tester pib qhia IR to tsis ua hauj lwm.
Tsis tas li ntawd, kuv tus SNR nqes hav yuav tsum yog dab tsi? Hauv tus ntug dej seem, txheeb xyuas tus Modulation thiab Lub Hwj Chim los nrhiav pov thawj SNR qib nyob hauv tus txais tau ntau yam rau txhua tus nqes hav channel. Txais tau SNR Qib (dB): Yog QAM64, SNR yuav tsum yog 23.5 dB lossis ntau dua. Yog tias QAM256 thiab DPL (-6 dBmV rau + 15 dBmV) SNR yuav tsum yog 30 dB lossis ntau dua.
Ib tug kuj yuav nug, qhov sib npaug nyob qhov twg?
Ua ntej- Kev sib npaug (Pre- EQ ) Equalizers Ua ntej- EQ sib npaug yog nyob nyob rau hauv lub upstream transmitter ntawm txhua DOCSIS 2 thiab siab dua cable modem. Nyob rau hauv lub upstream, modems siv pre- kev sib npaug rau pre-distort cov cab kuj uas tshem tawm cov kab distortions tshwm sim los ntawm kev xav hauv lub network.
Dab tsi yog flux Comcast?
Comcast Network Scout Flux . Network Scout Flux siv software-raws li, algorithmic kev kuaj xyuas ntawm qee qhov kev kos npe distortion uas yog siv los teeb liab ntawm cable modems thiab cuam tshuam headend iav los txheeb xyuas qhov chaw ntawm kev puas tsuaj.
Pom zoo:
ICFR hauv cable yog dab tsi?
ICFR. ICFR sawv cev rau In-Channel Frequency Response. ICFR piav qhia qhov flatness ntawm koj 6 MHz digital channel. Thaum cov channel tsis tiaj tus, cov teeb liab digital tuaj yeem hloov pauv thiab cov cuab yeej tau txais tuaj yeem muaj lub sijhawm nyuaj rau kev txiav txim siab txog cov khoom tau txais
Yuav ua li cas yog ib tug txheej txheem nyob rau hauv lub operating system dab tsi yog ib tug xov nyob rau hauv lub operating system?
Ib tug txheej txheem, nyob rau hauv cov nqe lus yooj yim tshaj, yog ib tug executingprogram. Ib tug los yog ntau tshaj threads khiav nyob rau hauv cov ntsiab lus ntawm cov txheej txheem. Ib tug xov yog ib qho tseem ceeb chav tsev uas theoperating system faib lub sij hawm processor. Lub threadpool feem ntau yog siv los txo tus naj npawb ntawm cov ntaub ntawv thov thiab muab kev tswj hwm ntawm cov neeg ua haujlwm threads
Dab tsi yog tag nrho cov kab kev sib txuas lus uas xav tau rau kev sib txuas tag nrho rau taw tes network ntawm tsib lub khoos phis tawj rau lub khoos phis tawj?
Tus naj npawb ntawm cov kab sib txuas lus uas yuav tsum tau muaj rau kev sib txuas tag nrho ntawm qhov taw tes rau-taw tes ntawm yim lub khoos phis tawj yog nees nkaum yim. Ib tug tag nrho txuas cuaj lub computer network yuav tsum tau peb caug rau kab. Ib tug tag nrho txuas kaum lub computer network yuav tsum tau plaub caug tsib kab
Dab tsi yog qhov txawv ntawm ib qho kev mob siab rau thiab tsis mob siab rau hauv Ark?
Ib tus neeg rau zaub mov tshwj xeeb yog tus neeg rau zaub mov tuav ntawm PS4. Tsis mob siab rau yog thaum koj tuav ib qho kev ua si thiab ua si hauv nws ntawm tib PS4, uas tsim cov tether uas yog qhov txwv tsis pub dhau qhov koj tuaj yeem ua tiav raws li ib tus neeg ua tsis tau, piv txwv li mus tau hlau thaum lwm tus tau ntoo thiab lwm tus tau txais. zaub mov
Dab tsi ntawm cov connectors siv nyob rau hauv thinnet coaxial cable?
Cov connectors feem ntau siv nrog Thinnet yog BNC, luv luv rau British Naval Connector lossis Bayonet Neill Concelman, connectors (saib daim duab 8-5). Qhov yooj yim BNC connector yog ib tug txiv neej hom mounted ntawm txhua kawg ntawm ib tug cable