Many friends mentioned how to realize long-distance transmission of HDMI signals. This is ok, let's look at it today. The general HDMI signal transmission is less than 30 meters, then the distance for the general quality wire is about 15 meters to 20 meters. For good quality lines, such as Akihabara's HDMI cable can transmit more than 25 meters, or even 30 meters, if only Simply transmit the HDMI signal to the display device. If the HDMI signal does not pass through other devices, if the total length is less than 30 meters, it is recommended that the longer the distance, the better the wire should be selected.
HDMI extender mode for long distance transmission
First, HDMI network conversion extender
1, HDMI signal does not pass other equipment (transmit 120 meters)
HDMI signals can't be directly transmitted to more than 30 meters with HDMI cable. There are almost no HDMI finished lines in the market for more than 30 meters. However, we can use the network cable to extend the signal.
In this case, if the HDMI signal is simply transmitted to the display device, and the HDMI signal does not pass through other devices, we can use the method of extending the signal by the network cable, and extend the signal with the HDMI cable extender, and the HDMI cable extender is divided into sending signals. Terminal (HDMI input, network cable output) and receiver (network cable input, HDMI output), can extend 100 meters (5 network cable), 120 meters (6 network cable).
2, HDMI signal needs to pass other equipment (transmission 60 meters)
If you need to go through the HDMI image processing device from the source to the display (such as HDMI splitter, HDMI switcher, HDMI matrix, etc.).
In general, it is recommended to place the HDMI image processing device in the middle so that the distance from the signal source to the HDMI image processing device and the distance between the HDMI image processing device and the display screen are as equal as possible, if the HDMI image processing device has a signal gain function. You can freely change the length of the input and output HDMI image processing equipment, which can extend the distance of signal transmission. The device supports input of 30 meters of HDMI cable, supports output of 30 meters of HDMI cable, and can transmit 60 meters in total. The product itself has enhancement. And amplifying the HDMI signal to ensure high-quality image transmission over long distances.
Second, HDMI IP extender
HDMI IP extender with multi-bandwidth cable with ip protocol, can realize ip dialing function, eliminating the use of network cable.
The HDMI IP extender can transmit more than one signal, and a signal can be transmitted through the router or the switch, and the signal of the receiving end RX is simultaneously transmitted.
One-to-one transmission link method
One-to-many transmission link method
Many-to-many transmission
HDMI IP extender is widely used
1. Connect an HDMI switcher to a remote device (such as Blu-ray and media player) to create your own wireless home theater.
2, the ideal choice of conference room, can share the briefing content and video conferencing to four different locations, the single-machine transmission distance of up to 120 meters, grading transmission further.
3, can become part of the digital signage architecture, wireless broadcast advertising or promotional video in showrooms, boutiques or car dealerships.
Third, HDMI fiber extender
In order to solve the problem of image mosaic, color distortion, and inability to transmit when the HDMI signal is transmitted over a long distance, the optical fiber extender is specially designed for network flat panel display and large screen curtain wall display advertising engineering, industrial automation control, medical equipment, security monitoring. , multimedia teaching and other display system engineering high-quality HDMI video signal long-distance transmission needs and professionally designed HDMI signal conversion, drive, receive and restore functions as a single signal transmission system, transmission distance of up to 20 kilometers.
HDMI fiber optic cable solid line long distance transmission
HDMI fiber optic cable (100 meters - 300 meters)
Because of the optical fiber transmission medium, the optical fiber HDMI high-definition line can basically ignore the long-distance signal transmission attenuation, and the transmission distance can reach more than 300m. For HIFI, projectors, and video surveillance systems, the long-distance transmission of traditional copper cables is distorted, directly leading to unavailability or poor experience of the device. The user uses the optical fiber HDMI cable, and the devices are arranged without worrying about the attenuation or distortion of the transmission signal. The system equipment can be arranged according to the actual use requirements of the user.
The advantage of the HDMI cable is that even if it is faced with a long distance of buried wire and wiring connection, it can guarantee the lossless transmission of 4k images and high-assurance audio. When the HDMI high-definition cable exceeds 25 meters, the signal amplifier needs to be added, and the limited length is affected. There is no guarantee that the video and audio signals will be transmitted without loss.
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