| 摘要 |
<p>The arrangement (1) comprises a multiplexer unit (3) inserted between an energy source and a signal path (4,5,6). The energy provided by the energy source is applied on the signal path by the multiplexer unit depending upon the situation. The two light sources are inserted in each signal path. A source of light in one signal path is inserted parallel to other source of light in other signal path. The signal path is inserted in a control loop (43,53,63). An independent claim is also included for a method for operating the circuit arrangement.</p> |
