The manufacturer of Elevator video monitoring cable tells you that the monitoring application in the elevator must consider the particularity of its continuous up and down movement. It is required that the wiring is different from the way of the pipe (groove) for fixed point monitoring. For transmission cables, general engineering companies have paid attention to the use of high-strength cables in wiring, but the electrical characteristics of transmission cables have not been paid enough attention, resulting in widespread elevator interference.

1. Meet the tensile strength: The manufacturer of Elevator video monitoring cable tells you that half of the elevator cables are used for extension. The high-rise elevator can reach up to more than 100 meters. The weight of a 100-meter cable is nearly 100 kilograms, so the cable must have sufficient tensile strength.
2. Good electrical parameters: When the cable moves up and down with the elevator, a section in the middle will be bent and deformed by gravity, resulting in changes in electrical parameters such as the impedance and distributed capacitance of the cable. When the cable of poor quality is deformed by force, the parameters change greatly, which will cause impedance mismatch, increase video attenuation, and produce signal reflection, which will lead to a decrease in the signal-to-noise ratio of the video signal and video interference, so it should be used as much as possible. Shielded, thick-gauge video cables to prevent "intrusion" from interfering signals.
Elevator video monitoring cable manufacturers tell you that in the elevator monitoring wiring, most of them are bundled with other cables, but since the AC signal in other cables will leak out through the transmission cable, when the video cable is bundled in parallel with it for a long distance, they are equal to one A secondary "antenna", so that the interference signal will be coupled into the video signal, resulting in video interference. Therefore, try to shorten the parallel bundle length of the video cable and other cables in the wiring. If possible, the Elevator video monitoring cable manufacturer tells you that you can fix the video cable from the middle point of the elevator shaft and lead it back to the main control room from other channels (cable shafts). , so as to avoid hum radiation coupling interference.