| 摘要 |
PURPOSE:To improve wiring work efficiency by providing a 1st matching means matching an output impedance of a television camera to a prescribed impedance and a 2nd matching means matching an input impedance of a monitor to a prescribed impedance. CONSTITUTION:A television camera 1 is connected to a video transformer 2 (1st matching means via a two-parallel signal wire. Control boxes 5a, 5b, 5c... are arranged corresponding to monitors 7a, 7b, 7c.... Video transformers 4a, 4b, 4c... form the 2nd matching means to match the impedance of the signal input side of the corresponding monitors 7a, 7b, 7c... to a prescribed impedance such as 75ohms in response to the control boxes 5a, 5b, 5c.... Thus, no special coaxial cable is employed and the parallel 2-wire is used for the connection so as to improve the wiring work efficiency.
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