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单词 multiswitch
释义

multiswitch

英汉-汉英词典
n. 复接机键
词组 | 习惯用语
您要查找的是不是:
  • switchman n. 转辙员;扳道工
  • multisyllabic adj. 多音节的
  • multistory adj. 多层的
multiswitch 复接机键

网络短语:
multiswitch EMP 作用是分配卫星电视信号的
英语百科

Multiswitch

a Multiswitch with 16 outputs, the four cables from the Quattro-LNB enter on the left
This article is about the device used in satellite TV installation, for overcurrent protection devices see Resettable fuse

A multiswitch is a device used with a dual or quattro LNB to distribute satellite TV signals to multiple (usually more than four) receivers from a single dish and LNB.

A typical Ku band universal LNB designed for the European market can be switched between four modes (two frequency ranges and two polarisations) selected by signals from the receiver (supply voltage for polarisation and presence or absence of a 22 kHz tone for frequency range). This means that each receiver needs a separate feed and twin-tuner receivers (such as Sky+ and Freesat+) need two separate feeds. For small numbers of receivers a multi-output LNB is used and all the feeds are taken straight from the LNB but there is a limit to the number of outputs that can reasonably be placed on a LNB.

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更新时间:2025/6/20 13:26:22