| 摘要 |
A method and apparatus for testing the functional status of a light unit wit h a test signal intended for transmission to the light unit from a controller having a test signal detector therein. The method includes receiving a test signal, shunting the test signal away from the light unit, analyzing a response to the light unit to an energizing signal to determine a non-functional light unit state and disabling the shunting up on determination of the non-functional light unit state. The apparatus includes circuitry for implementing the steps of the method. |
