Large matrix is ​​generally used as the dispatch center of the whole station or multiple machine rooms. There are many input signal sources, and there may be multiple models and cable diameters. If you connect various cables directly to the matrix, the installation will be very inconvenient and Facilitates maintenance and signal exchange. For this reason, external signals can be connected to the system via the video and audio adapter boards.
Since the matrix is ​​the dispatch center, many computer rooms will be affected once it is damaged. Therefore, jumpers are installed at the input and output of the matrix. As an emergency measure, signal dispatching can be performed temporarily by manual jumper connection.
In order to eliminate the potential difference between the external signal and the machine room where the matrix is ​​located, a video distributor with common-mode rejection should generally be selected as the distribution device at the input end of the matrix. In addition, the input signal adapter board should also use floating adapter.
The main control computer room should be equipped with the XY control panel with the highest priority, and other computer rooms only need to be equipped with the BPS control panel. The matrix working state and the scheduling of each computer room are monitored by the computer room (usually in the general control computer room) responsible for managing the matrix scheduling, and can be intervened by the XY control panel. For computer rooms that do not share land, the BPS control panel should be installed in a suspended manner.
Large video and audio matrices are powered by dual power supplies with high reliability, but the work indicator on the power supply template should still be checked frequently. In addition, the backup battery failure in the matrix is ​​often not easy to find, so you need to pay more attention.
Matrix accessory devices such as control panels and status displays are generally connected to the host through a specific bus. It should be noted that the maximum distance is limited during application, and termination should also be noted.
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