With the development of science and technology, more and more products from the expensive price to the point where everyone can get, as HDMI cable, two decades to the present day, the cheapest and even a few wallet mail.
But as a very important material HDMI cable, a penny a penny, want to get a better experience, or to follow the agreed reasoning.
However, there must be a lot of partners are curious about the difference between a few dollars of wire and the wire sold online for hundreds of dollars. Today we will be from the core, interface and support for the HDMI version of the three points to do an exploration.
The better the core, the more stable the signal
HDMI cable appearance and other products, it looks flat, but the actual body of the cable has its own universe.
Currently we use HDMI cable, the standard is 19-pin interface, that is, the internal 20 cores, 19 +1 (ground), so as to ensure that our signal transmission is guaranteed.
While some jerry-built cables, but only 13-core or 15-core, it is easy to appear flickering, snow, black screen, color is not saturated, poor sound quality and other phenomena.
For HDMI cable, there are four common wire gauge 22AWG, 24AWG, 26AWG, 28AWG, the larger the number of HDMI cable core the finer, the shorter the transmission distance.
So in general the higher the purity of the wire core, the thicker the diameter of the wire can reduce signal loss, shielding thick, dense can reduce interference, thick wire skin, can improve the strength of the wire, improve stability.
The material of the wire core is mainly divided into oxygen-free copper, recycled copper, copper-clad steel and copper-clad iron. In the production process, the choice of copper wire is also divided into tinned copper, bare copper wire, copper-clad steel, copper-clad aluminum and other classifications, in order of good and bad.
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