Does The HDMI Cable Have Positive And Negative Directivity

Since the birth of HDMI standard, it has realized the efficient transmission of audio and video signals with its excellent performance. It is widely used in set-top boxes, DVD players, personal computers, televisions, game consoles, integrated amplifiers, digital audio and television sets, and has a momentum of the sun.

The commonly used HDMI high-definition cable is divided into ordinary HDMI cable and fiber-optic HDMI cable. Since both ends are identical connectors, many users wonder: is there any directionality in the use of HDMI cable? Are there pros and cons?

Ordinary HDMI cable

Ordinary HDMI cable, that is, copper HDMI cable, is the most popular HDMI product with a transmission distance of less than 30 meters. It is very common in daily games, office work, building home cinemas, and engineering applications.

Copper HDMI transmits pure weak electrical signals. The transmission signals from the input end to the output end are directly interconnected without mediation, so there is no directionality, regardless of positive and negative. Both ends of the cable can be connected to the input end or output end arbitrarily, which will not affect the transmission signal effect.

be careful

To realize long-distance transmission of copper cable HDMI signal, the manufacturer will add a signal amplifier at the interface to ensure the strength and stability of long-distance signal. This kind of long meter copper cable HDMI cable with signal amplifier needs to be divided into positive and negative directions (if some products are marked with TV terminal, they must be connected to TV and other display equipment). Pay attention to the signs of the cable body when using.