| 摘要 |
<p>PROBLEM TO BE SOLVED: To detect only the connection state of a connector with simple constitution without activating test program and preparing any special terminal for detection. SOLUTION: A CPU 11 outputs and supplies a high-frequency pulse for detection to a connector CN-1 for display. Then the high-frequency pulse returns to the input terminal IN of the CPU 11 through a capacitor C2 provided between signal lines D1 and D2 of an output-side connector part Cn-1b, a capacitor C3 provided between signal lines D2 and D3 of an input-side connector part CN-1a.... Here, the CPU 11 detects the connection state of the connector according to whether or not the pulse has been received.</p> |
