Jinan meeting room audio, Jinan wireless microphone, projector installation

In the multimedia systems engineering, will use a variety of equipment, such as projectors, computers, matrix switchers, distributor, CD, DVD, and the control system. Because the device is often used switching power supply, the signal is actually floating ground, causing the ground is not the same between the potential of each signal, there is a potential difference, in severe cases may reach more than one hundred volts. When all signal connection, since the ground potential is inconsistent, it will cause a textured, low-frequency interference phenomena scrolling image, or cause turnovers, the panel failed, even when serious breakdown of integrated circuits and other components directly. Therefore, in the two-phase three-wire power system, the system design, the power cord should comply with left zero right fire protection center to rule; the three-phase four-wire power supply system should be possible to use the same two phase. Of particular note is the same ground must be protected, and ensure its communication to ensure that all equipment of a kind with the ground reference. This will prevent all interference phenomenon. 2: projection engineering (rear) mirrors What is the role? In the rear installation works, often encounter the problem of limited space projection space. Solve this problem, you can use special rear projection screen mirror system, which uses mirrors to show beam folded once or twice in the show from the projection of insufficient space reaches a predetermined projection distance to ensure the screen size. Greater than 90% reflectivity, mirror flatness ± 0.02mm, in order to ensure the loss projection light source brightness is reduced to a minimum range.