Digital transmission box and fault diagnosing system
A technology of digital transmission and input terminal, applied in the field of digital transmission box and fault diagnosis system, can solve the problems of inability to judge the cause of the fault, low maintenance convenience, etc., to achieve remote reset switching chip control, simple and reliable operation, and improved maintenance convenience. Effect
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[0015] In one embodiment, a digital transmission box such as figure 1 As shown, it includes a power supply module and a business and main control board. The power supply module includes a switching power supply 102, a controllable DC power output interface 104 and a controllable AC power socket 106. The business and main control board includes a main control single-chip 202 and optical fiber switching. The chip 204, the Ethernet interface 206, the switch chip reset and energy storage circuit 208, the first control switch K1, the mains detection circuit 210, and the output current detection control circuit 212.
[0016] The input end of the switching power supply 102 is used to connect to the mains, the output end of the switching power supply 102 is connected to the output current detection control circuit 212 and the main control microcontroller 202, and the output current detection control circuit 212 is connected to the controllable DC power output interface 104 and the main con...
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