Introduction
1930年アメリカに最初に登場した電気コンセントは１口しかありませんでした。そして現在は当たり前のように目にする２口や倍の大きさのプレートのコンセントに進化しました。その進化がなければ、すべての人は1口ソケットから電気を分配するための延長コードを使用することになり、これは今でもテレビ信号を接続ケーブル（分波器付き）で分配しているのと似ています。今から40年以上前に、ケーブルテレビ業界は顧客のために２口プレートに進化させています。
What you need
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古い方法だとご存知だと思いますが...、分波器をつけた１本のコネクターケーブルが壁に取り付けられています。どちらも床で埃をかき集めて汚いです。
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壁プレートから延長ケーブルを外します。もうこれ以降必要ありません。
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3 Comments
I already have a wall plate with one cable output(for my modem) can I connect the splitter to this wall plate or I have to remove the plate and connect the other cable behind the wall plate
The reason why coaxial wall plates only have one coaxial jack is because using a two-way splitter divides the signal by two. That’s right, the signal strength on both sockets is 50% weaker. It doesn’t matter whether there is something connected to the other socket or not, or what’s connected to it, it’s still half as strong as it was before the splitter on both sockets. In fact, leaving an unused socket open is even worse as it let interference in. Coaxial works with a center conductor that carries the signal, and an outer shielded that protects against EMI and it needs to be sealed (i.e., no open jack, unconnected cable, cut cable, etc.). Any unused jacks or cables should have a 75 ohm termination. So that’s why coaxial jacks only has one socket, and why cable guys only put splitter when really needed. They fix problems every day by people who thought it would be a good idea to put splitters everywhere, and use cheap gold-painted splitters like the one in the tutorial on top of that.
Time marches on and Splitter|Wall Plate has been replaced with Splitter|Wall Plate PRO. The difference is its pro-grade signal splitter and wall plate. They both are installed everyday and conform to SCTE specifications. It is widely-known, among industry professionals, that MSOs or cable service providers routinely provide more signal than minimally required so that some signal splitting is not an issue.
Unnecessary cable connections can diminish signal strength. So, the fewer connections the better. Splitter|Wall Plate PRO eliminates the in-room connector cable so, there are fewer connections and that supports signal strength.
In addition, every open F-port (“socket”), even the single one of a typical pass-through coaxial wall plate, can leak signal. Therefore, best practices suggest any unused/open F-port throughout a network should be terminated with a 75-ohm terminator cap http://www.hollandelectronics.com/catalo....
