Network cable fiber optic cable which has a large signal loss to add points .

Optical fiber is very complicated, because there are many kinds according to the type and material, there are suitable for long-distance transmission, **expensive, there are suitable for short-distance transmission, **cheaper, of course, it can't be simply divided, but also according to what kind of light you need with the equipment, you need to match, if you don't match, no matter how expensive it is, you can't use it.

To put it simply, optical fiber has a stronger anti-interference ability than network cables, and if there is an interference source in the middle of this wiring in your home, then it is better for you to use light. But there are also disadvantages to light, such as not bending at a small angle, etc., if you have to turn a lot of corners in this section of the wiring, then you should consider using a network cable, because the light will cause a lot of signal loss.

In addition, different light transmission distances have different ranges, specifically ask the technician in charge of your home, that's all, I hope to give you some help.

Because the optical fiber transmits light, the loss of light is very serious, and it can only travel meters. Therefore, signal amplifiers are needed at intervals, and nothing else will be interfered with by other signals except for signal amplifiers. The network cable does not need a signal amplifier, and the interference is minimal, and it is cheap.

It is recommended to use a network cable.

Generally speaking, the signal-to-noise ratio of network cable is 10 to the sixth power of 10, while the signal-to-noise ratio of optical fiber is 10 to the sixth power of 10 to the ninth power of 10;

The transmission distance of network cable is shorter than that of optical fiber, which is about 100 meters to thousands of meters, while the transmission distance of optical fiber is between thousands of meters and hundreds of kilometers.

Of course, the optical fiber signal loss is relatively small, but you are only 30m, which is too rowable and the equipment is complicated; The network cable can go 90m, no problem (national standard 89m), if necessary, you can also go to 110m, no problem.

It is a fiber optic cable with less signal loss.

The twisted pair can only be up to 50 meters (I can't remember exactly, it seems to be).

Cable TV is certainly not the same as fiber optics.

Of course, the loss of optical fiber is less, but the cost of optical fiber is high, the connection is complex, the cost of network cable is low within 100 meters, and the connection is convenient.

Theoretically, the length of the network cable cannot exceed 100 meters. If the network cable of ***, bai

The tensile resistance and the performance of shielding DU interference are strong, and the longest length of zhi can reach about 120, and it is not recommended to be longer. As.

DAO requires a long-distance transmission network, and optical fiber can be used.

The reason why the network cable can't be too long:

The only languages that the computer can recognize are 0 and 1, and the signals that the network has to transmit are 0 and 1. These signals become current when they pass through the network cable, and the current intensity of the network cable is between -15V and +15V, and there is resistance when the current is transmitted through the network cable. Therefore, according to the principle of high-voltage transmission, the longer the line, the greater the voltage level must be used to transmit electricity.

If the network cable is too long, but the voltage is so low, the signal will be weakened until it is lost. Therefore, the network cable should not be too long.

General 100m, the quality of the network cable is a little worse, maybe about 80m, extension method: the first way, add a switch in the middle of the network cable, the second way, add an Ethernet repeater.

The effective distance is 100 meters, if the network cable is too long, you can use the network cable adapter.

About 70 meters, if the distance is too long solution in the middle plus switch.