With the replacement of high-definition equipment, LCD TV, BLU-RAY DVD, high-definition projector and other equipment have been equipped with HDMI interface, as we all know, in the past to connect the equipment required more cables, sorting and layout is also very troublesome, now only through an HDMI cable can achieve synchronous transmission of images and sound, convenient connection, clearer and fuller picture quality, sound more real and natural. So what are the precautions when we use the HDMI interface to connect?
Short-distance transmission with cheap HDMI cable can:
For many of our home users, projectors and other devices that provide input sources are not too far away, generally one to two meters, so we generally choose a 1.5-meter HDMI cable. In the HDMI cable selection, below 5 meters can be considered as a short distance transmission, HDMI cable selection is relatively simple, an important factor affecting the quality of the wire is the thickness of the wire, can be divided into 24, 26, 28 and 30 lines, the smaller the number, the thicker the wire diameter, the better the effect. For lines below 5 meters, choose the lines of 28 and 30, 1.5 meters does not exceed 80 yuan, and 5 meters does not exceed 150 yuan.
HDMI is not hot-swappable:
One of the biggest advantages of the HDMI interface is that it is easy to use, as long as one line, the audio and video can be fully transmitted. And the interface design is very convenient to unplug, do not need to press any button can be easily plugged in and unplugged. But this brings another problem, if you plug in or unplug directly in the power-on state, it is easy to cause the HDMI interface chip to burn. Therefore, when unplugging the HDMI cable, do not hot-plug, and must turn off the projector and related connection equipment before unplugging.
HDMI wiring, carefully buried in the wall:
In order to be beautiful and convenient to use in the future, many friends want to bury the HDMI cable in the wall in advance during decoration, and this practice must be cautious.
Long-distance transmission has strict requirements for the wire:
If it is a long-distance transmission, the requirements for HDMI cable are very strict.
