Everyone often encounters such problems when using matrix switchers. This article introduces the common problems of matrix switchers.

1) Type selection

Radio and television and video conferencing applications should use broadcast-grade products, monitoring applications can use monitoring products, VGA signals (some people also regard it as video) to use VGA signal matrix.

2) Size selection

In a project, audio and video signals and VGA signals should be treated as three different media. Audio signals generally have a large number of inputs, such as microphones and CDs, as well as audio from disc players. However, considering that amplifiers and stereos are generally only one set, at most one mixer can be added to the mixer before mixing. It may take several Road signal, so the output of the audio matrix will not be very large, such as 32 × 8 or 64 × 8, but it is not necessary to choose 32 × 32 or 64 × 64, unless it is broadcast and video conferencing transmission, there must be audio for each video Synchronous transfer.

In the design scheme, the number of signal sources is relatively easy to determine. See how many sources, the input quantity of the matrix is ​​fixed, but the number of independent output channels should be considered, which is determined according to the operating mode of the system. Sometimes there may be only a few display devices that have a distribution relationship (which is always consistent with each other, not independent). Then consider occupying an output port and adding an allocator. If these devices are likely to be independent, they are still independent. The output is better.

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