what is cat 7 ethernet cable？

In the front, we understand the difference between cat5e network cable and cat6a network cable. Today we will discuss Cat7 Ethernet cables together.

First understand from the data that the bandwidth of the Cat6 network cable is 250mHZ, and the Cat7 Ethernet cable can support up to 600mHZ. Looking at this parameter alone, the Cat7 Ethernet cable is more than twice that of the Cate6 network cable.

Cat7 Ethernet cable is the latest twisted pair in the ISO 7/F standard. It is mainly used to adapt to the application and development of 10 Gigabit Ethernet technology. But it is no longer an unshielded twisted pair, but a shielded twisted pair, so it can provide at least 500MHZ comprehensive attenuation to crosstalk ratio and 600MHZ overall bandwidth. It is a Cat6 network cable and a Cat6 network cable. The transmission rate can reach 10Gbps.

In the cat7 Ethernet cable, each pair of wires has a shielding layer, and the four pairs of wires together have a common large shielding layer. From the physical structure point of view, the additional shielding layer makes the seven types of lines have a larger wire diameter. Another important difference lies in its ability to connect to the hardware. The parameters of the seven types of systems require that all wire pairs provide at least 60DB of integrated near-end crosstalk when the connector is at 600MHZ. However, the super five system only requires 43DB at 100MHZ, and the sixth type at 250MHZ has a value of 46DB.

The rapid development of network applications has an ever-increasing demand for bandwidth. In June 2002, the ANSI/TIA/EIA568-B copper twisted pair category 6 standard met most commercial applications with its 250MHz bandwidth. However, with the continuous advancement of technology, the 250MHz bandwidth cannot fully meet people’s needs.

Next, I would like to recommend a Cat7 Ethernet cable with high cost performance!

The Cat7e shielded ethernet cable is S-FTP twisted pair, that is, each pair has an aluminum foil shielding layer, and a layer of copper wire mesh is wrapped in the sheath, using copper and aluminum materials, wire mesh, and metal The combination of the two structures of the foil forms a strong anti-electromagnetic interference effect, which effectively suppresses the electromagnetic interference between the wire pairs and the electromagnetic interference between the wire pairs.

Why does the Cat7e ethernet cable need to be grounded?

The difference between a shielded ethernet cable and an unshielded network cable is that apart from the shielding layer, there is also a grounding drain wire that is only available for shielded network cables. The grounding drain wire is used to shield the network cable to ground, mainly to prevent the electrostatic interference caused by long-distance transmission, which may cause data packet errors in severe cases.

According to the requirements of the installation specifications, the shielded wire is generally allowed to be grounded at one end. If the two ends are grounded, when there is a potential difference between the two devices, current will flow through, so that it becomes a source of electromagnetic radiation interference, but it also has two ends. Grounding situation.

Are there any requirements for the plug-in connector for the Cat7e shielded ethernet cable?

At present, the most commonly used interfaces for telecommunications networks are RJ-11 and RJ-45. RJ-45 for computer networks is the common name for standard 8-bit modular interfaces.

In the past five types, super five types, six types of wiring, RJ-type interfaces are used, mainly RJ-45. In the seven-category wiring system, “non-RJ type” interfaces will be allowed.

ARJ-45 adds 4 connection contacts on the basis of RJ-45 (the highest transmission is 500MHZ, the 4 contacts of 1, 2, 7, and 8 work). The ARJ-45 interface is 1, 2, 3, 4, and 5 ,6,7,8 these 8 contacts work, the highest transmission is 2000MHZ.

What should I pay attention to when adopting an overall shielded shielded network cable for Category 7/Super Category 7 double-shielded network cable?

Shielding only works if the entire cable has a shielding device and is properly grounded. Therefore, the entire system is required to be shielded devices, including cables, sockets, crystal plugs and distribution frames, etc. At the same time, the building needs to have a good grounding system.