What is now required is "Communication speed and reliability" ──Cat6e Cable introduction

　If you want to buy a LAN cable now, the first thing you want to be careful about is "which category it belongs."

　The LAN cable currently on sale is "Category 5" for 100Mbps, 1000Mbps compatible (1000 BASE-T) "Enhanced Category 5", and "Category 6" which is also more reliable while compatible with 1000Mbps, and supports 1000BASE-TX.The abbreviation is called "CAT5", "CAT5E", and "CAT6", respectively.

　The mainstream products sold at stores are "CAT5E", and there are a wide variety of variations such as slender type and flat type.Many of the wired LANs in offices and at home are still 100Mbps, and even users who have introduced faster Gigabit LANs will think that "CAT5E" is fine, and I think it is not a mistake.。

　However, if you think about it, LAN cables are one of the products that are used relatively long, and if you have trouble, it tends to be difficult to pursue the cause, and it is even more troublesome if you install it under the floor.It can be something.In fact, because "LAN is not available = cannot be connected to the Internet", it will not be a job in the office, and it will be difficult to use at home.In fact, it can be said that it is actually a product to be purchased.

　If you can buy or try to buy it now, the most recommended LAN cable is compatible with Enhanced Category 6 (CAT6E).

　This time, we picked up the Sanwa Supply "KB-T6E" series, one of the few products sold as a "CAT6E" compatible LAN cable that can be purchased at the store.It is a product that is not only compatible with CAT6E as a specification, but also is packed with high reliability.

Reliability is invisible

　The KB-T6E series is 3 coloring and 0.It has 7 types of length variations from 5 to 10 meters.

　CAT5 compatible LAN cable is about 100MHz, CAT6 compatible LAN cable is about 250MHz (editor -in -method: "CAT5E compatible cable is about 250MHz ~", but it was exactly as described above. I apologize and correct it.)While CAT6E has a transmission band, CAT6E has more than 500MHz, which can be used for 10GBASE-T, which is currently under standardization work.The 1000BASE-T, a 1000BASE-T of up to 1 Gbps, which is being introduced in offices and at home, has a performance that can be supported by the next generation of 10Gbps LAN.

　KB-T6E is characteristic, not its appearance, but content.Not only for this product, but also in the company's product, the CAT6 compatible LAN cable has an 8 -core configuration of a single track, and it is a structure that can be transmitted more efficiently than the 8 -core configuration of the general seven lines.There is.

　Electrical signals have the characteristics of electricity flowing only outside the copper wire, the higher the frequency, and the higher the size of the copper wire, the larger the cross -sectional area can be secured, making it easier to pass the signal. Become.

　In the LAN cable, 8 -core cables are used as "more contrary" in pairs and used as four signals in paired units.This is because two signals can be used to enhance the noise resistance from the outside by using two signals.By the way, the 100BASE-TX and 1000BASE-T "T" are acronyms for twist pairs (= more contrary).By the way, in 10BASE-T/100BASE-TX, 4 core is used only as two signals.

　There is another reason why the LAN cable is more contrary.In data transmission using high -frequency, the signal line itself releases unnecessary electromagnetic waves and becomes a noise source for adjacent signal lines.

　By "by", the direction of the electromagnetic wave magnetic field is reversed each time the signal line is twisted 180 degrees, and the electromagnetic waves at the nearest position are offset.However, if this interval is wide, this offset effect will be smaller.in short"

The fact that "more" means that the noise resistance is high. In the KB-T6E series, the noise resistance is enhanced because the signal line is closer and closer.

　Due to the structure in the connector portion, it is necessary to return more, so it is easy to cause noise in this.

　Whereas ordinary products are connected in parallel in the connector part, in the same series, the tip part and the tip part are set to a staggered sequence, so that the return distance is as short as possible, and that electromagnetic interference is as much as possible.The structure is connected by the connector part with a wider distance between the signal rays so that the distance between the signals is reduced.The plug with this structure is also adopted in the company's "CAT5" and "CAT6" LAN cables, and the noise resistance is enhanced.

There is a difference of around 10Mbps just by replacing the cable