Security monitoring has become one of the most important components of our security work. From front-end high-definition cameras to network transmission monitoring, to back-end storage and high-definition video display, the increase in investment costs alone is enough to explain the importance of video surveillance in the entire security project. However, in the daily use of the monitoring system, there are often some interferences that prevent the monitoring system from working properly. So is there any way to eliminate these interferences? Let’s talk about some of the “most” interference removal methods.
1. The most common: wood grain interference signal jammer
In daily use, wood grain interference is one of the most common interferences. There are many reasons for this interference, the most common of which is defects in the video transmission cable. In addition to problems with the line itself, wood grain interference is sometimes caused by strong current interference near the transmission line. Of course, to deal with current interference, you only need to use purified power supply or online power supply in the entire system. Regarding this problem, the solution is to strengthen the shielding of the front-end equipment, or ground the video cable.
2. Maximum area: reticulated interference
In addition to wood grain interference, there is also mesh interference that may occasionally affect visual viewing. Among common interference images, the area affected by pattern interference should be considered the largest. Although the interference area is large, the processing is not as “domineering” as it seems.
Regarding the origin of this interference, it is usually caused by a small short circuit or open circuit between the transmission core of the video cable and the surrounding protection network. Therefore, this problem often occurs with BNC connectors or many other types of connectors. The solution is to check the corresponding connectors one by one and replace the problem equipment in time, so you can easily get rid of the confusion of this kind of interference.
3. The most organized: vertical bar interference
Although this type of interference is uncommon, its characteristics are very obvious. The main reason for the formation of vertical bar interference is that the quality of the cable does not meet the specifications, resulting in abnormal associated data during the transmission process. Therefore, when dealing with this kind of interference situation, the method of “connecting a resistor in series at the beginning” or “connecting a resistor in parallel at the terminal” can be used. Of course, the best way to prevent this kind of interference is to strictly control product quality during the wiring process.
