TV modulator for the retransmission unit of CATV

摘要

(57) Abstract Objective With broadcast end radio wave the stop the occasion where it does, gosutokuThe noise which is output through the rear tuner can be cutIt makes the way. Constitution Down converter section 1, carrier reformation department 2,The TV modulator for CATV which has up-converter section 3 and the likeIn aforementioned carrier reformation department 2, input signal to the same TV modulatorWhen becoming stopping/deciding, RFANPU of up-converter section 3The control circuit 4 which turns off power source was provided.