With the upgrading of high-definition equipment, LCD TVs, Blu-ray DVDs, high-definition projectors and other equipment have been equipped with HDMI interfaces. The HDMI cable can realize the simultaneous transmission of image and sound, the connection is convenient, the picture quality is clearer and fuller, and the sound is more real and natural. So what should we pay attention to when using the HDMI interface to connect?
The precautions for connecting using the HDMI interface are as follows:
A cheap HDMI cable can be used for short distance transmission:
For many of our home users, the projector and other devices that provide input sources are not too far away, generally only one to two meters, so we generally choose a 1.5-meter HDMI cable. In the selection of HDMI cables, anything below 5 meters can be regarded as short-distance transmission. The selection of HDMI cables is relatively simple. An important factor affecting the quality of the cables is the thickness of the wires, which can be divided into 24, 26, 28, and 30. Wire, the smaller the number, the thicker the wire diameter, the better the effect. For the line under 5 meters, you can choose the line of No. 28 and No. 30. The 1.5-meter line does not exceed 80 yuan, and the 5-meter line does not exceed 150 yuan.
HDMI cannot be hot-plugged:
One of the biggest advantages of the HDMI interface is that it is easy to use. With just one cable, all audio and video can be transmitted. And the interface design is very convenient to plug and unplug, you can easily plug and unplug without pressing any button. But this brings another problem. If you directly plug or unplug it in the power-on state, it will easily cause the chip of the HDMI interface to be burned. Therefore, when unplugging and unplugging the HDMI cable, do not hot-plug. The projector and related connected devices must be turned off before unplugging.
HDMI wiring, carefully buried in the wall:
Many friends want to bury the HDMI cable in the wall in advance in order to use it beautifully and conveniently in the future. This approach must be cautious.
Long-distance transmission has strict requirements on wires:
If it is long-distance transmission, the requirements for HDMI cables are very strict.
