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How To Choose HDMI 2.1 HD Cable?
Nov 13, 2018

HDMI 2.1 fully supports 4K 8K 10K @120Hz, and also supports eARC, which enables home theater wireless connection to HDMI and AVR, and uses the highest quality audio specifications. The HDMI Forum said it will conduct compatibility testing in the first quarter to the third quarter of 2018, and the new ultra-high-speed data line will have to wait for a while.


In accordance with the slow process of popularization of past agreements and the price of products that are ultimately placed on the market, we can foresee that there is still a long way to go before the real power of HDMI 2.1 is realized. What is certain is that this standard change will further enhance the order of audio and video equipment. A new round of product upgrades will soon come, and many hardware manufacturers are also eagerly awaiting.


Although the HDMI cable that is truly compliant with the HDMI 2.1 standard is not available yet, it is reported that both the Open and the Changfei have introduced fiber-optic HDMI cables with a bandwidth of up to 56 Gbps. From this perspective, it is far beyond the requirements of HDMI 2.1. 48Gbps bandwidth. After the association completed the compatibility test in 2018, perhaps the definition of the HDMI2.1 standard line will be implemented.


1, pay attention to the HDMI cable connector gold-plated and PIN pin

The gold plating of the joint is slightly better than that of the non-gold plating. The gold-plated joint has strong corrosion resistance, good electrical conductivity, easy welding, high temperature resistance, and certain wear resistance, and is also very beautiful. Therefore, many HDMI connectors are coated with a thin layer of gold. It is not the HDMI connector gold plating will bring high-definition picture quality effect, and finally the HDMI interface of the HDMI cable is in contact with the HDMI interface of the device, so the conduction performance and wear resistance of the PIN pin are very important.

The PIN needle mainly uses tin bronze as a substrate. Tin bronze has high elasticity, good wear resistance and corrosion resistance, and is suitable for manufacturing various elastic components. The PIN pin of the plug connector should be frequently inserted and removed, so tin bronze is generally used. Nickel is then plated on the substrate and gold is plated on the nickel. The reason for gold plating after nickel plating is that it is very difficult to directly plate gold on a copper substrate, so generally three layers are observed in the structure of the PIN pin.


2. Is the HDMI cable using a metal handle better than a plastic handle?

If it is the final picture quality of the HDMI cable, the metal handle and the plastic handle are no different, except that the HDMI cable of the metal head is more durable.


3. The thicker the cable part of the HDMI cable, the better?

Under normal circumstances, the larger the wire diameter of the HDMI cable, the larger the cross-sectional area of the conductor, and the larger the current can be transmitted. The final performance of the HDMI cable is good and stable. However, some inferior wires will also be filled with debris to increase the wire diameter, which makes people look very thick, so it is not the thicker the better. Some good quality HDMI cables will be very thin and beautiful according to people's preferences, and ensure that the transmission effect is not affected. This HDMI cable can be seen from the overall design appearance. High-quality HDMI cable, the actual use effect is much stronger than similar HDMI cable.


4, HDMI cable softness and twists and turns reflect the workmanship and materials

We found that many inferior HDMI cables will exhibit a common characteristic, that is, the cable is very soft, and a white crease will appear when the cable is bent a few times. If the core material is not used, Pure copper, so many cores inside the bend may break. Therefore, the softness and the degree of bendability of the HDMI cable can reflect whether the external materials of the HDMI cable are up to standard or whether the core wire is pure copper.


5. Is the HDMI cable with magnetic ring better? How to distinguish between true and false magnetic rings?

In weak current cables, it is often seen that the plastic cylinders on the cable are raised, that is, the magnetic ring. The role of the magnetic ring in the cable transmission signal is to filter out high frequency and low frequency interference currents, thereby achieving the purpose of protecting the device and purifying the signal. From the actual use situation, the HDMI cable for transmitting digital signals does not reach the length of 3 meters. Generally, there is no need to add a magnetic ring. However, the HDMI cable below 3 meters in the market has a magnetic ring, which is mainly a kind of manufacturer. The means of eyeballs, but it does not matter.

Since the magnetic ring on the cable is not exposed to the outside, there is a plastic case to wrap it, so there are also bad manufacturers to save the cost without releasing the magnetic ring - the plastic casing of the magnetic ring only has no real inside. Magnetic ring. This is a pseudo-magnetic ring. This magnetic ring can be seen from the appearance of its rough magnetic ring plastic case and the lack of shape. Careful buyers can test the magnetic ring with coins or sewing needles. true and false.

 

6, if the funds in hand, enough to recommend the fiber optic HDMI cable

The optical fiber HDMI cable uses optical fiber as the transmission material. Compared with the electrical signal propagation of the copper wire, the optical signal transmission can achieve faster speed, longer transmission and complete signal transmission. The qualitative change of “core” is bound to bring about a new revolution in the field of transmission. The optical fiber HDMI line breaks the length bottleneck that traditional HDMI copper wire faces. Since the copper wire is an electrical signal transmission, the longer the application distance is, the weaker the signal is. The optical fiber transmission medium of the Kaiboer fiber optic cable is used, and the signal transmission attenuation of the long distance can be neglected, completely eliminating the HDMI high-definition line using the traditional copper core. The long-distance transmission information has the disadvantage of large damage, and the longest transmission distance can reach more than 300m. It supports 4K 60hz to effectively transmit 4K audio and video signals, bringing the cinema-level visual feast to the users.

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