The army communications cables are broken and they can be used together
For example, here is a communication cable disconnected. Do you want to connect it? The one hundred line. Do you know which one is the one? You can only call the people on both sides, to help, such as the original A phone and B phone is connected, then you have to all other telephone lines at low level, high level AB phone, you can only be through this method to identify which wire is which wire is time-consuming.
Communication and transmission of electrical signals, and then the poles, such as the cable to ensure that can make one hundred phone calls simultaneously, so this very coarse communication cable cut you can find it at least one hundred thin wire wrapped together. One hundred telephones, each phone is a positive line, then one hundred telephones share one line, the negative electrode (zero potential ground), and the ground does not take up the communication cable. Of course, this means that the current digital signal, telephone, analog signals before the phone, two hundred lines of positive and negative poles can not be less.
Regardless of AC power supply cables only need two poles, that is, two lines, no matter how many of the above, all kinds of loads can be separated from the two lines.
Communication cables are broken and connected, and the problem is that the connection itself can be very troublesome.Communication cables rely on electrical signals to transmit information.Well, you guessed right away, this is different from the traditional power cable.
