| 摘要 |
PURPOSE:To improve the versatility of transmission unit frame, by incorporating the circuit to produce the control signal controlling the electronic selector with the exclusive panel so that the common and exclusive panels can full-automatically be matched. CONSTITUTION:The common panel 26 has the signal input terminal 27 and the signal output terminal 28 and the signal line selection electronic circuit 33 in addition to the first and second common panel exclusive use function circuits 31 and 32. The first and second control signal generation circuits 38 and 44 set the signal according to the signal line selection electronic circuit 33 predetermined, in general, the DC signal generation of intrinsic level, to the respective first and second exclusive use panels 34 and 40, and when the first and second exclusive panels 34 or 40 is connected to the common panel 26, the output of the common panel exclusive function circuit 31 or 32 to the exclusive use panel connected is automatically obtained at the output terminal 28. |
