What is an HDMI extender, splitter, switcher, conv
2022-11-18
HDMI is the current mainstream video interface, we must have seen or come into contact with HDMI extenders, HDMI distributors, HDMI switchers, HDMI converters and other dazzling and god-like HDMI peripheral equipment in conference projects, monitoring projects, data centers, control centers and daily life. So what exactly are they used for, what kind of applications are they suitable for, and how do you choose them?
The role and purpose of the HDMI splitter
An HDMI splitter is a device that supports the output of more than 2 HDMI ports, and can distribute the input HDMI signal into multiple consistent, synchronous HDMI signal outputs. Common HDMI splitters mainly include 2-port HDMI splitters (such as: HDH-1:2, HDH-1:4, HDH-1:8, etc.), 4-port HDMI splitters (such as: HDD-1:4, etc.), 8-port HDMI splitters (such as: HDD-1:8, etc.), 16-port HDMI splitters (such as: HDD-1:16, etc.) and 24-port HDMI splitters, etc., in terms of resolution, generally support 1920*1080p, 2K, 4K resolution
HDMI splitters are often used in training, monitoring and command centers, retail, store displays, remote video conferences, high-speed rail stations, airport terminals, etc., which often require multiple display devices to display the same picture.
The role and use of HDMI extenders
HDMI extender is a device used to extend HDMI signal, usually composed of a transmitter and a receiver, which needs to be used in pairs, and is connected by a CAT6 network cable or optical fiber cable of a certain length to ensure that the signal is transmitted over a long distance without attenuation. Compared with the ultra-long HDMI cable, the HDMI extender is lower in cost, and the fault tolerance cost is low, and a single accessory in the entire transmission line can be updated and replaced, which is an economical choice for long-distance transmission.
HDMI extender can generally choose network cable as transmission medium under 200 meters, more than 200 meters, you can choose optical fiber as transmission medium; the use of network cable as transmission medium is generally called HDMI single network cable extender, and the use of optical fiber cable as transmission medium is generally called HDMI optical fiber extender or HDMI optical transceiver. Common HDMI single network cable extenders mainly include 30 meters extension (such as HDH), 50 meters extension (such as HDH), 60 meters extension (such as HDH), 100 meters extension (such as HDH), 120 meters extension (such as HDH), 150 meters extension (such as HDH), 200 meters extension (such as HDH), etc.; HDMI fiber extender mainly has 20 kilometers extension (such as HDH, etc.); in terms of resolution, there are generally 1920*1080P@60Hz, 4K* 2K@30Hz, 4K*2K@60Hz, etc. are available
HDMI extenders are often used in high-speed rail train stations, airport terminals, subway stations, nuclear power plants, outdoor large-screen advertising, civic centers, squares, etc., where the display needs to be placed far away from the main unit
The role and purpose of HDMI switcher
HDMI switcher is a device that transmits 1 or more HDMI signals to 1 or more displays respectively; generally ordinary HDMI switcher supports N in and 1 out, such as 2 in 1 out, 3 in 1 out, 4 in 1 out, 5 in 1 out, 8 in and 1 out, the advanced HDMI switch is called HDMI matrix, HDMI matrix can achieve N in N out, such as 2 in 2 out, 2 in 1 out, 4 in 4 out, 4 in 3 out, 4 in 2 out, 4 in 2 out, 4 in 1 out, etc., and can be realized to display the picture of one or more hosts on 1 or more monitors;Compared with ordinary HDMI switchers, HDMI matrix switchers can customize the output in use, so they are more flexible, and the price is relatively expensive.
The main function of the HDMI switcher is to facilitate the use of switching between multiple HDMI hosts, without having to reseat the device every time, and manually switching the signal is not only time-consuming, but also very prone to errors, and even lead to serious on-site accidents
HDMI switchers are often used in home theaters (such as computers, PS4/5, TVs, digital audio, set-top boxes, etc.), TV studios, concerts, wedding scenes, shopping mall advertising, and other scenarios that require frequent switching of video signal sources
The role and purpose of HDMI converter
HDMI converter is a kind of conversion device that converts HDMI signals into other formats of audio and video, and common HDMI converters mainly include: HDMI to VGA converter (such as: GEFFEN), HDMI to DVI converter, HDMI to SDI converter (such as: GEFFENHSD), HDMI to AV/S-Video converter (such as: GEFFENHAV), HDMI audio splitter (such as: GEFFEN-HHA), etc
In daily life, we often encounter that the host is HDMI interface, but the display is DVI interface, VGA interface or SDI interface, at this time, the HDMI converter can help us solve the problem of wrong interface, without causing waste of equipment resources
HDMI converters are often used in scenarios where new and old devices coexist in offices, homes, data centers, and computer rooms. HDMI-related peripheral equipment will definitely be involved frequently, you just need to understand the difference between them, and choose the corresponding equipment according to your actual needs!
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