论文部分内容阅读
接地抗干扰技术接线,如图3所示。4.采用抗干扰传输设备对于干扰环境下的闭路电视监控系统,除了采用屏蔽与接地等抗干扰措施外,还可以使用抗干扰传输设备,这些设备通过光/电转换、频谱搬移以及幅度扩压处理等手段,实现了视/音频信号在干扰环境下的传输。(1)采用光端机/光纤收发器光是不受电磁干扰的,因此在强电磁干扰的环境
Ground anti-interference technology wiring, shown in Figure 3. 4. Adopting anti-jamming transmission equipment In CCTV monitoring system under disturbing environment, anti-jamming transmission equipment can be used in addition to shielding and grounding anti-jamming measures. These equipments are capable of transmitting signals through optical / electrical conversion, spectrum shifting and amplitude expansion Processing and other means to achieve the visual / audio signal transmission in the interference environment. (1) Optical / fiber optic transceivers Light is not subject to electromagnetic interference, so strong electromagnetic interference environment