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75 HeMS Hob Kuj 75ω Tsau 75 Ohms tsau
Ib tug 75 offms Hostenator yog ib hom ntawm delenenator muaj npe rau nws impedance ntawm 75 ohms.
Nws yog qhov tob tob siv los tswj lub teeb liab lub zog ntawm lub teeb liab, ib tug tswv yim ntawm lub teeb liab, thiab tiv thaiv tsis ua haujlwm ntawm kev teeb liab ntau dua.
75ω Tsau Tsau Saib Xyuas Cov Cim Tseem Ceeb
1. Kev Rho Tawm Sib Tw: 75 Ohms tsau cov impedenator txoj kev sib tw ntawm cov khoom siv hluav taws xob, yog li txo cov teeb meem kev sib tw.
2. Tsawg distortion tuaj yeem txo lub zog ntawm lub teeb liab yam tsis qhia kev cuam tshuam ntxiv lossis cov cim kev cuam tshuam ntxiv.
3. Kev ntseeg siab: Vim tias cov ntaub ntawv uas muaj feem cuam tshuam ntau yam thiab tsis muaj chaw txav chaw, lawv tsis tas yuav muaj kev tu lossis hloov.
75 HeMS Hostuels feem ntau siv hauv cov ntawv thov hauv qab no:
1. Hauv Cable TV network thiab cov xov tooj TV digital, nws yog siv los daws teeb liab teeb lub zog thiab txo cov ntsuas kev tawm tsam thiab ploj.
2. Thaum lub sijhawm kev tsim khoom thiab kev sib kis ntawm cov yeeb yaj kiab siab thiab cov ntsiab lus txhais tau cov ntsiab lus, tswj hwm lub teeb liab ntawm cov teeb liab zoo.
3
4. Hauv TV antevision antennas, siv los sib npaug ntawm cov teeb liab lub zog ntawm amplifiers thiab kav hlau txais xov.
Tsim nyogCov khoom siv ntau yam kev ntsuas siab thiab muaj zog felaxial 75 offs hospenters. Lub attenuation feem ntau yog li ntawm 1 txog 40dB. Cov edenuators nrog siab siab thiab muaj zog, txhim khu kev qha, feem ntau cov khoom lag luam tsis haum, tuaj yeem ua tau raws li cov neeg yuav tsum sib txawv.
Tshooj naj npawb | Hov ntau(GHz, Min.)  | Hov ntau(Ghaz, Max.) | Hwjchim(W) | Ua attenuation(DB) | Kev ua yog(DB) | Vwstr(Max.) | Tus sib txuas | Lem sij hawm(lub lis piam) |
|---|---|---|---|---|---|---|---|---|
| Q7A0101 | DC | 1 | 1 | 1, 2, 4, 8, 10, 16, 20 | ± 0.5 | 1.1 | F | 2 ~ 4 |
| Q7A0302 | DC | 3 | 2 | 1 ~ 30 | 0.6 | 1.25 | F, n, bnc | 2 ~ 4 |
| Q7A0305 | DC | 3 | 5 | 1 ~ 30 | 0.6 | 1.25 | F, n, bnc | 2 ~ 4 |
| Q7A0101-1 | 0.1 | 1 | 1 | 10, 20, 30, 40 | -2 | 1.15 | F, n | 2 ~ 4 |
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