4tronix Multi-Apartment Video Door Entry System 사용자 설명서 - 페이지 8
{카테고리_이름} 4tronix Multi-Apartment Video Door Entry System에 대한 사용자 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. 4tronix Multi-Apartment Video Door Entry System 8 페이지.
페이지 인쇄Wiring using CAT5 Cable
CAT5 cable consists of 4 pairs of twisted wires. For this to provide the required
interference shielding, it is important that one wire in each pair for audio and
video is a ground wire. As with the screened cable, it is also important to double
up the conductors for the Ground and B+ (power) lines as shown:
In some installations the +14V power required for each indoor monitor can be
provided from a central place near the door unit. This can make for a neater
installation, but increases the voltage drop by a factor of two as the power needs
to run all the way up to the monitor and then back to the door camera unit. You
can use the spare conductor pair from the previous diagram to run the 14V signal
to the back of the monitor. Note that the ground side of the power adaptor is
connected to the ground signal from the camera, saving a conductor and allowing
both conductors to carry the +14V.
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