[Home Theater Network HDAV.com.cn] According to the latest research results, the global TV market in 2016 has developed steadily, and 4K TV has a rapid momentum, with sales exceeding 50 million units. 4K technology is a higher resolution ultra-high definition display specification, which can provide viewers with a clearer viewing experience. 4K technology has become a hot spot in the industry. Users are very concerned about the choice of TV brands in order to experience the demand for higher definition. Ignore the connection line.
Today's high-definition devices are HDMI interfaces. The full name of HDMI is a high-definition multimedia interface that can transmit audio and video signals at the same time. It is a dedicated digital interface suitable for image transmission. The quality of the HDMI cable directly affects the high-definition playback effect. The wires on the market are dazzling, and a little careless, in addition to not enjoying the high-definition video experience, it will also damage the transmission interface of TV sets and other devices.
Multi-scene application
HDMI, we need to know some of the details of use, in the face of the merchants, we can choose the product!
First, ask HDMI version, choose HDMI 2.0 standard
4K transmission has forced upgrades in many industries, including computer hardware, home bandwidth, and transmission interfaces. The HDMI standard has also been updated from version 1.4 to version 2.0 (HDMI version: 1.0, 1.1, 1.2, 1.3, 1.4, 2.0), HDMI 2.0 has a great improvement in bandwidth and sound performance, picture quality, although the 1.4 standard is sufficient for movie playback, but can not cope with the game's needs (at least 60fps game screen is smooth). 2.0 is also backward compatible with the old version, so when buying HDMI HD cable, pay attention to the latest 2.0 standard on the HDMI version.
Core specification
Second, ask the material of the merchant wire:
The design and workmanship of the HDMI HD cable can directly experience the difference between branded products and common products. High-quality HDMI cable, material, workmanship will be very refined, industrial design will take into account the humanity, the use of operation will be very convenient!
Wire core
The transmission capability of the HDMI cable is its most important performance. Ordinary copper HDMI cable will be limited by the length and transmission capacity. In order to ensure stable transmission, there are fiber-optic HDMI cables on the market, but they are expensive, unless users with professional needs can consider it. Now it is possible to use 19 34AWG wire gauges and multi-strand tinned copper cores for weaving, without worrying about the attenuation caused by the length and the external interference, to solve the long-distance transmission.
Wire internal structure
2. Interface
The interface of the HDMI cable plays a vital role in the stable signal transmission. The good HDMI connector interface is designed with zinc alloy + gold plating process, good contact, can also avoid rust for a longer period of use, the overall smooth, bright, no burrs or flaws. The poor quality HDMI looks bleak and lacks luster.
Tips: The color can be seen as the thickness of gold plating, the thicker the color, the thicker the gold plating layer, and the higher the stability when transmitting signals.
Soft HDMI cable
3. The outer sheath of the wire
HDMI cable can be seen with the naked eye, or combined with the feel of the hand. A good HDMI will be equipped with a metal mesh to protect the wire body. It will be more wear-resistant during use. The wires made of copper are generally soft and flexible, and the transmission performance is stable. So you can judge by the feel - softness!
Third, the last point to note:
We have heard that the overheated plug causes the device to burn out. It is often the case that the port is burnt out. In theory, HDMI is hot swappable, but this can happen because of electrostatic damage.
There are two reasons:
HDMI is a very high-speed digital signal that requires static protection equipment for high-speed operation. In actual life, it will generate tens of thousands of static voltage, while the ordinary equipment anti-static protection circuit can only withstand 5-8KV static electricity. Most devices do not have a protection circuit to save cost, and it is possible to burn the chip when it is plugged in with an electrostatic HDMI cable.
Guarantee: HDMI Certification Association
2. Another reason is that China's power outlet is 2 pins and there is no ground wire. The user does not have a separate grounding wire when installing the LCD TV, which makes it easier to form static electricity.
Then users can choose HDMI HD cable with static protection to be safer when selecting. Currently, HDMI cable with static protection has eNB HDMI HD cable, and dual port supports 30,000 volts static protection. Or choose to have HDMI Certification Association certification, security is more secure!
Through the above points, I believe that everyone has some understanding of the wire, and decided that the wire is not only the choice of expensive, sometimes there are unscrupulous business flicker, the factors that determine the use of wire need to take into account the interface material, wire quality , the length and the bandwidth affected by the support version, etc., do not buy expensive to buy right!
I don't know what you think? Welcome to express your opinion!
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