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56
②
Main power cord
③
Power cascade
Picture 7-2
Power cable connection diagram
7.3 Signal cable connection
7.3.1 Sending box
：
The sending box contains a sending card to send video data to the display.
7.3.2 Main Power Cord
：
Send the main signal cable between the cabinet and the display screen to transmit
video data with a length of less than 70m.
Remarks: When the transmission distance is greater than 70m, it is possible to
transmit data by optical fiber, and the longest distance is 20 kilometers.
Signal cascade: used for signal transmission between cabinets.
7.3.3 Display Signal cable connection
：
1. Install the sending box, arrange the main signal, and put it next to the display
installation position.
2. Install the cabinet, refer to Chapter 6.
