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Theoretical and technical differences between optical fiber and traditional copper core HDMI lines
Release time：
2022-08-25 15:51
Since the HDMI line entered the HD era, the HDMI line that transmits HD audio and video signals has come into people's sight. So far, HDMI line has become a necessary equipment for HD audio and video transmission. Since last year, I have received many inquiries from netizens. What about HDMI lines using optical fiber as the transmission medium on the market now? Is this optical fiber HDMI line worth buying at a higher price than the traditional copper core HDMI line?
Recently, I got the HDMI cable of optical fiber (10 meters). Let's see what this HDMI cable is?
Before experience, let's look at the theoretical and technical differences between optical fiber HDMI and traditional copper core HDMI lines. It can be seen from the comparison table that the difference between optical fiber HDMI line and traditional copper cable HDMI line is that optical fiber HDMI line is more convenient than traditional copper cable HDMI line in transmission distance, transmission power consumption, signal loss and anti-interference radiation capability.
This is the difference in theory. In fact, let's experience the real line.
Speaking of it, many people will think of HD players. In fact, the HDMI line of is also famous in the industry, because its price is moderate and its quality is good, which is very suitable for ordinary consumers. The optical fiber HDMI line obtained this time is already a second-generation product with a length of 10 meters, which is also the length commonly used in the layout of HDMI lines in ordinary family living rooms and home theaters. When I first got this product, I was surprised. This 10-meter-long line only has a small box?
When you open the box, what you see first is an important prompt: Fiber HDMI is a one-way transmission and cannot be connected in reverse. This is also the big difference between connecting optical fiber HDMI cable and traditional copper core HDMI cable.
Since the main transmission medium of the inner core is optical fiber, the second generation of optical fiber HDMI can make the cable diameter 4.8 mm, so the 10-meter long HDMI cable I see is only such a small circle. This is a cable that has just been opened. It can be seen that the cable has good protection effect. The connector has not only a protective cover, but also a woven mesh bag.
How thin is 4.8mm? Let me use the common signature pen to compare. It can be seen that the diameter of the cable is smaller than that of the signature pen.
The second generation of optical fiber HDMI does not have a small diameter of optical cable and a small connector.
The advantage of smaller cable diameter and joint is that it is easier to pass through the pipe during decoration and installation, and thinner PVC pipe can be used.
The interface of the second generation of optical fiber HDMI not only uses gold-plated interface, but also uses zinc alloy frosted shell for protection. The second generation of optical fiber HDMI adopts the HDMI2.0 specification to support bandwidth transmission up to 18GBPS, 4K60HZ transmission and 4:4:4 color space, which can be said to be the main choice for decoration and cabling at present.
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