비상방송 중계기(리시버) 기본편

비상방송 중계기(리시버) 기본편

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55 лет назад

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비상방송 선로 절연저항 및 저항 측정 통하여
선로 이상(절연파괴) 및 스피커 설치 수량을 가늠하여 공사 중 발생원인을 사전에 방지하여 방송장비 엠프 소손 방지와 공사업체 책임소재를 파악할 수 있다.

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