An internal self-test system of a short-wave prognosis selector
A self-checking system and prognostic selection technology, applied in transmission systems, receiver monitoring, electrical components, etc., can solve the problems of high price, large size, inconvenient to carry, etc., and achieve low cost, small size, and strong practical value. Effect
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[0028] Such as Figures 1 to 4 As shown, the internal self-test system of the short-wave pre-selector and post-selector of the present invention is integrated with the original short-wave pre- / post-selector and installed in a metal heat-conducting material housing; the internal self-test system of the short-wave pre-selector and post-selector of the present invention includes an FPGA control circuit 1 , Self-inspection signal shaping circuit 2, conversion circuit 3, pre / post selector filter circuit 4 and self-inspection signal test circuit 5.
[0029] The FPGA control circuit 1 is electrically connected with the main control unit of the external short-wave radio station through the control interface, and the FPGA control circuit 1 is also connected with the self-inspection signal shaping circuit 2, the conversion circuit 3, the preselector filter circuit 4 and the self-inspection signal test circuit 5 respectively. electrical connection.
[0030] The FPGA control circuit 1 is...
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