How to choose network cable and optical fiber

Now there are many applications of network cameras, and the cables used are mainly network cables and optical fibers. The following is a simple sharing of ZR Cable.

1. Network cable selection

There are many applications of network cables in weak current systems. It is recommended to focus on parameters such as network cable core material, core diameter and sheath material when selecting network cables.

①Network cable core material

At present, the core materials of network cables mainly include oxygen-free copper, aluminum wire, copper-clad aluminum, copper-clad iron, etc. Oxygen-free copper is the best and highest quality wire material, which is commonly used in POE power supply systems. loss. In general monitoring systems, it is recommended to use the national standard oxygen-free copper wire core material as a link to transmit data and power to the camera.

②The core diameter of the network cable

National standard network cable: The oxygen-free copper of the national standard network cable is the core of the material. The copper diameter of the super-category five network cable can reach 0.51mm; the core diameter of the six-category network cable is made of oxygen-free copper, and the core diameter can reach 0.58mm.

Non-standard network cable: The copper core wire of the non-standard super five network cable will not be fully 0.51mm, generally 0.48mm. In order to save costs, the materials used are generally copper-clad aluminum, aluminum wire, etc.

③Network cable sheath material

The sheath material of national standard network cable is generally made of fire-retardant and flame-retardant PVC material, while the sheath cable of non-standard network cable is made of discarded recycled materials, which is flammable and may cause fire and other safety hazards when used in large quantities in integrated wiring projects. .

2. Optical fiber

Optical fiber is mainly used in the vertical trunk line system and building group subsystem in the integrated wiring system for long-distance transmission, and has the advantages of large bandwidth and strong anti-interference. Optical fibers can be divided into multi-mode fibers and single-mode fibers according to the transmission mode, both of which have the following characteristics:

①Different light sources

Single-mode fiber uses a laser diode LED as the light source, while multi-mode fiber light source uses a light-emitting diode LED as the light source.

②The transmission mode is different

Single-mode fiber only transmits light waves in one mode, with small dispersion and large bandwidth. Commonly used bandwidths are 1G/10G/40G, etc., and are generally suitable for long-distance transmission up to 100KM.

How to choose network cable in network monitoring system?

Multimode fiber transmits light sources of various modes, which will produce light dispersion. The commonly used bandwidth is 1G/10G, and the transmission distance is short, generally within 2KM.