Today, I will introduce to you a device that can stably transmit audio and video signals and USB signals over long distances. It is an extender. What is an extender? What are its functions and advantages? What are its types and uses? Let's take a look!
An extender is a device used to extend the signal. It can extend the signal to tens of meters or even tens of kilometers through different transmission media (Such as network cable, optical fiber cable, WIFI, etc.). The function of the extender is to solve the problems of signal attenuation, interference and distortion that may occur during long-distance transmission, and to ensure the quality and stability of the signal. The basic composition of the extender is composed of a transmitting end and a receiving end. The transmitting end converts the signal into a format suitable for transmission, and the receiving end restores the signal to the original format, and then transmits the signal through a fixed transmission medium.
There are many types of extenders. According to different signal types and signal transmission media, they can be roughly divided into HDMI network cable extenders, HDMI wireless extenders, HDMI fiber optic extenders, DVI network cable extenders, DVI fiber optic extenders, and VGA network cable extenders. , VGA fiber optic extender, KVM network cable extender, KVM wireless extender, KVM fiber optic extender, USB network cable extender, USB fiber optic extender, etc. Each of these extenders has its own features and advantages, let’s briefly introduce them:
Network cable extender: Connect the transmitter and receiver through a single Cat5/5e/6 network cable to extend the video signal by a certain distance. Common extension distances are 30 meters, 40 meters, 50 meters, 60 meters, 70 meters, and 100 meters , 150 meters, 200 meters, 300 meters, common interfaces mainly include HDMI, DVI, VGA, SDI, etc. Some network cable extenders also support 1-to-many through switches (A transmitter is connected to multiple receivers through an independent switch or router), many-to-many (Multiple transmitters are connected to multiple receivers through an independent switch or router) Multiple receiving ends are connected, and the receiving end can be adjusted to display the signal of a certain transmitting end) to extend.
Optical fiber extender: Connect the transmitting end and receiving end through a single optical fiber cable to extend the video signal for a certain distance. If a single-mode optical fiber is used, the common extension distance is 10 kilometers, 20 kilometers, etc.; if using For multimode fiber, the common extension distances are 100 meters, 200 meters, 300 meters, 500 meters, etc.
KVM extender: used for mouse (Mouse), keyboard (Keyboard), display (Video) signal extension, mainly for long-distance computer control. The HDMI KVM extender is composed of a transmitter and a receiver, which can be connected by Cat5/5e/6 cable, fiber optic cable or wireless connection. KVM extender supports 30 meters, 60 meters, 70 meters, 100 meters, 200 meters, 10 kilometers, 20 kilometers, etc. according to different transmission media and transmission methods (Wired transmission and wireless transmission).
USB extender: used to extend USB signals, such as USB1.0 signal, USB2.0 signal, USB3.0 signal, also used in pairs. The USB extender consists of a transmitter and a receiver, which can be connected by Cat5/5e/6 cables or fiber optic cables. According to different transmission media, the USB extender can generally extend the USB signal by 30 meters, 60 meters, 100 meters, 5 kilometers, 10 kilometers, etc. It should be noted that, like USB2.0 signal, USB3.0 signal extension The distance is generally shorter than the extension of USB1.0 signal. For example, the keyboard and mouse signal can be extended by 100 meters through USB1.0 signal through the network cable, while the USB2.0 signal can only be extended by 60 meters, so you need to pay special attention to this point when using it.
I hope that through this article, everyone can have a preliminary understanding of the extender. Generally speaking, the extender is a device that can adapt to various signals and transmission methods. It can effectively solve the problems that may be encountered when the signal is transmitted over a long distance, and ensure the effective extension of the original audio signal. The extender can choose the appropriate extender type and extension distance according to different application scenarios, so as to realize the flexible extension of the signal. Extenders have become an indispensable device in many industries and fields, such as home entertainment, corporate meetings, teaching presentations, digital signage, remote control, etc., creating a better audio-visual environment for people.