| 摘要 |
<p>PROBLEM TO BE SOLVED: To increase the number of illumination loads connectable to one modulated light control terminal by a modulated light signal cable. SOLUTION: A modulated light signal amplifier 10 is connected to a modulated light signal cable to transmit a modulated light signal from a modulated light control terminal to an illumination load in order to amplify the modulated signal. The modulated light signal amplifier 10 is equipped with a receiving circuit 11 to receive the modulated light signal and an amplifying circuit 12 to amplify the modulated light signal received. Thereby, by amplifying the modulated light signal transmitted from the modulated light control terminal 3 to the illumination load L through the modulated light signal cable in the modulated light signal amplifier 10, the number of the illumination loads L connectable to one modulated light control terminal 3 a by the modulated light signal cable 5, in other words, the number of the illumination loads which can be modulated by one monitor terminal for light modulating operation can be increased.</p> |
