The choice of monitoring matrix , broadcasting and video conferencing applications should use broadcast-quality products, monitoring applications can use surveillance products, and video signals (some people also regard it as video) should adopt a monitoring signal matrix.

Matrix interface selection

Different matrix switcher interface forms are also different, taking the video signal as an example, the common interface forms are: D-15 type interface, BNC interface, RCA (Lotus head) interface, DVI interface, S-VIDEO interface, RJ45 interface, etc. . In engineering applications, a specific device interface format must be selected according to the format of the switching signal and the actual transmission needs. For example: computer video signal selection D-15 type interface; industrial and military video signals to select BNC interface; home entertainment and civilian video equipment Lotus interface; computer digital video DVI interface; network digital video RJ45 interface, HDMI digital high-definition Dedicated interface, etc. The interface selection must be accurate, as far as possible without adapters to convert the interface form, resulting in unnecessary signal loss, affecting the project quality.

Matrix bandwidth selection

Different signals have different bandwidths, the audio signal bandwidth is lower, the video signal bandwidth is higher than audio, and the VGA signal has a higher bandwidth than the video signal. The current high-definition video signal has a very high bandwidth. Therefore, in the selection of the bandwidth of a matrix product, a high-bandwidth high-definition video matrix should be selected as much as possible.

For computer VGA signals, the higher the resolution, the shorter the signal transmission distance and the higher the required bandwidth of the matrix. When choosing a matrix switcher, bandwidth is a problem that needs careful consideration. In order to transmit image signals clearly, it is highly recommended to purchase a high-bandwidth HD matrix for the future expansion of high-definition image equipment.

Matrix compatibility options

The matrix is ​​the core equipment in the audio and video engineering. The various signal sources come from different devices and require high compatibility of the matrix . This requires that the matrix has a higher input amplitude range at the input, the output has a certain drive capability, and the impedance matching between the devices is appropriate.