The USB extender is a device that can break through the limitation of USB signal transmission distance. It can extend the USB signal to a distance of tens of meters or even several kilometers through different media (such as network cable, optical fiber cable, etc.) to realize remote control and data transmission. transmission. There are many types of USB extenders. This article mainly introduces two common USB extenders: USB fiber optic extender (here takes eKL-UF01 as an example) and USB single network cable extender (here takes eKL-HUE as an example), and analyzes them The differences, advantages and disadvantages and application fields. The main function of these two extenders is to transmit the USB signal over a long distance, solving the problem that the USB signal is limited by the length of the cable.
Principle of USB fiber optic extender
The USB fiber optic extender is a USB extender that uses optical fiber as the transmission medium. It consists of two parts: the transmitting end and the receiving end. The transmitting end converts the USB signal into an optical signal and transmits it to the receiving end through the optical fiber cable. Restore optical signal to USB signal. The main features of the USB fiber optic extender are as follows:
01、Long extension distance: The USB fiber optic extender can realize the kilometer-level extension of the USB signal, and the longest distance can reach more than 6 kilometers according to different fiber types and specifications.
02、High signal quality: The USB fiber optic extender transmits signals in a digital and uncompressed manner, which will not cause signal attenuation and distortion, ensuring high-definition picture quality and high-speed data transmission.
03、Strong anti-interference: The USB fiber optic extender uses optical fiber as the transmission medium, which is not affected by external factors such as electromagnetic interference and lightning strikes, and is suitable for harsh environments.
04、High security: The USB fiber optic extender uses fiber optic cable as the transmission medium, which will not leak electromagnetic radiation, and is not easy to be eavesdropped or tampered with, which protects the security of data.
The USB fiber optic extender is suitable for the following application fields
01、High-definition video transmission: The USB fiber optic extender can realize long-distance transmission of high-definition video signals, suitable for video conferencing, monitoring, education and other occasions.
02、VR/AR device connection: The USB fiber optic extender can realize high-speed data transmission between VR/AR devices and computers, improving user experience.
03、Industrial control: The USB fiber optic extender can realize remote control and data collection between industrial equipment and computers, improving work efficiency and safety.
USB single network cable extender
The USB single network cable extender is a USB extender that uses the network cable as the transmission medium. It consists of two parts: the transmitting end and the receiving end. The transmitting end converts the USB signal into a network signal, and transmits it to the receiving end through the network cable. The network signal is restored to USB signal. The main features of the USB single network cable extender are as follows:
01、Medium extension distance: The USB single network cable extender can realize the 100-meter-level extension of the USB signal, and the longest distance can reach 300 meters according to different network cable types and specifications.
02、Moderate signal quality: USB single network cable extenders use digital compression or analog to transmit signals, which may cause a certain degree of signal attenuation and distortion.
03、Moderate anti-interference: The USB single network cable extender uses a network cable as the transmission medium, which is less affected by external factors such as electromagnetic interference and lightning strikes, but still needs to pay attention to shielding and grounding.
04、Moderate security: The USB single network cable extender uses a network cable as the transmission medium, which may leak electromagnetic radiation, and may also be eavesdropped or tampered with. Encryption and protection are required.
The main advantages of the USB single network cable extender are as follows
01、Low cost: Compared with other types of USB extenders, the price of the USB single network cable extender is lower. At the same time, ordinary network cables and accessories can be used, which reduces the cost.
02、Good compatibility: The USB single network cable extender can use standard network protocols for signal conversion and transmission, and is generally compatible with a variety of devices or systems.
The USB single network cable extender is suitable for the following application fields
01、Computer peripheral product connection: The USB single network cable extender can realize remote connection and data transmission between computer peripheral products (such as printers, scanners, cameras, U disks, keyboards, mice, etc.) and computers.
02、Network penetration: The USB single network cable extender can increase the distance of the network cable through the switch, or realize the integration with other network transmission signals before transmission.
03、I/O synchronous control: Some models of USB single network cable extenders support 2 sets of I/O synchronous extension control, which can realize remote computer power on and off or custom I/O signal remote input and output control.
Practical application cases of USB extenders
A、USB fiber optic extender in medical equipment: In the radiology department of a hospital, high-definition medical images need to be shared among doctors on different floors. Using the USB fiber optic extender to connect the medical imaging equipment with the computer in the remote diagnosis room effectively realizes the distance transmission and ensures high-definition image quality and real-time performance.
B、USB single network cable extender in the factory: In a production line, production data needs to be transmitted to the control room in real time. Since the transmission distance is within 50 meters, the USB single network cable extender solution is sufficient to meet the demand and save costs at the same time.
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