First, the principle of an audio and video matrix switcher:
An audio and video matrix switcher is specifically designed to switch and distribute both video and audio signals—primarily unbalanced stereo audio. It allows multiple input signals to be routed to any output channel independently. This ensures that each output channel operates separately, enabling flexible control over both visual and audio outputs. The device supports asynchronous control of audio and video, offering greater flexibility in system configurations.
These matrix switchers come with features like power-off field protection and field reverse-switching, ensuring reliable operation even during unexpected power failures. They support RS-232 communication for remote control, infrared control, and network-based management. The latest models are equipped with LED panels and touch-sensitive buttons, making the interface more intuitive, user-friendly, and visually appealing.
Second, the audio and video matrix switcher interfaces:
Typically, these devices use a pair of white and yellow RCA connectors (commonly referred to as "lotus" connectors) for audio and video signals. Connecting standard RCA cables to these ports is straightforward. While this setup enables separate transmission of audio and video, it still combines luminance (Y) and chrominance (C) signals into one video stream. As a result, the display device must perform Y/C separation and chrominance decoding, which can lead to color signal loss and potential interference between the luminance and chrominance components. This can degrade the final image quality. Although the audio and video interface offers some advantages, its inherent limitations in Y/C mixing make it unsuitable for applications where high visual fidelity is required.
Third, key features of the audio and video matrix switcher:
1. Equipped with the latest ARM9 embedded processor for efficient performance.
2. Uses a 300M high-bandwidth professional chip to support HDTV signals.
3. Implements long-distance transmission distortion compensation technology, supporting up to 300 meters.
4. Features a professional audio op-amp for natural and rich sound quality.
5. Includes a blue LCD display with full Chinese status information.
6. Utilizes programmable logic circuits (FPGA) for stable and clear functions.
7. Full SMD process with built-in ESD protection for enhanced durability.
8. Audio and video input/output terminals use RCA connectors.
9. Supports N-channel video input and output, enabling full cross-switching.
10. Provides N-channel stereo audio input and output, allowing full cross-switching with video either synchronously or asynchronously.
11. Built-in round-robin switching function with customizable timing and channel settings.
12. Features 8 preset scene memory options, accessible directly from the panel.
13. Compatible with industry-standard commands and protocols.
14. Has power-off memory protection to retain settings after a power failure.
Fourth, control modes of the audio and video matrix switcher:
1. Button control: Directly operate via the front panel buttons with real-time status display.
2. Infrared remote control: Switch channels remotely using an infrared remote.
3. Matrix management software: Use specialized software (MCONSW1.0) for advanced control, connected via RS232 or TCP/IP.
4. Touchscreen or panel control: Connect programmable touchscreen (MCON-TCH880) or panel (MCON-OPP2000) for plug-and-play operation.
5. Centralized control: Integrate with other systems and control platforms for comprehensive management.
Fifth, application areas:
This series of audio and video matrix switchers is a high-performance, intelligent switching device used to route audio and video signals—either synchronously or asynchronously—to any output channel. It is widely used in large-screen projection systems, lecture halls, command centers, and multimedia conference rooms, providing reliable and flexible signal routing solutions.
Sixth, main technical specifications:
1. Audio section:
Frequency response: 20Hz – 20kHz ±1dB
Stereo channel isolation: >80dB @ 1kHz
Common-mode rejection ratio: >75dB @ 20Hz–20kHz
Gain error: ±0.1dB
2. Video section:
Input/Output impedance: 75Ω
Fully supports NTSC, PAL, SECAM, and HDTV video signals.
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