FST3384WM

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Logic - Signal Switches, Multiplexers, Decoders is an important part of networking systems. Through these components, different signals are switched or transmitted. Among them, FST3384WM is one of the most commonly used products. This article will discuss FST3384WM application field and working principle.

FST3384WM is a four-channel video mux, which is widely used in the video transmission field. It allows up to four composite video signals to be switched, routed, or mixed together, multiplexed onto a single wire pair, and transmitted over up to 500 feet of unshielded twisted-pair (UTP) cable. Its application field covers a variety of areas, such as retail surveillance, CCTV security monitoring, digital signage, home automation, and traffic control.

The FST3384WM’s low power consumption and compact packaging make it suitable for many applications. It has a very low maximum power consumption of only 200mW and a small outline package which allows it to be embedded into existing systems with minimal effort. The FST3384WM can be used in a wide range of video transmission applications, including NTSC, PAL, and SECAM composite video formats.

The FST3384WM comprises four pair of input and output channels, each comprising one video and one sync signal. It has an on-board voltage regulator for 3.3V and is supplied with an adjustable output voltage regulator, which allows the power supply voltage to be adjusted from 5V to 12V. The FST3384WM works by cutting off the sync signal from the active input, at the same time switching multiplexer M2 to the output. This leaves M1 to pass the video signal while M2 directs the other video signals (M1 allows one signal through, while M2 switches all the others in sequence). The multiplexer M2 allows the video signal to move past it and pass through the channel output, where it is combined with the un-cut sync signal and transmitted. The sync signal is then passed through the channel output where it is combined with the video signal, providing a complete video and sync signal.

The FST3384WM is also equipped with several other features, such as synchronization across all four channels, adjustable setups for signals (such as color bar pattern, burst signal erasure, and horizontal loop filter), and control of the gain and frequency response of the transmitted signal. With these features, the FST3384WM can be adapted to fit most video transmission applications.

In conclusion, the FST3384WM is a four-channel mux, capable of switching and transmitting up to four composite video signals over a single wire pair. Its low power consumption and compact packaging make it suitable for a variety of applications in the video transmission field. Its features, such as synchronization across all four channels, adjustable setup for signals, and control of gain and frequency response, allow it to be adapted to most video transmission applications.

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