Security Monitoring Engineering Frequently Asked Questions
1. Incorrect equipment caused by power failure. Incorrect power supply may be as follows: The power supply line or power supply voltage is incorrect, the power is not enough (or the line diameter of a certain power supply line is not enough, the voltage drop is too large, etc.), the transmission line of the power supply system has a short circuit, open circuit, and instantaneous Pressure and so on. In particular, equipment damage due to power supply errors or momentary overvoltages occurs. Therefore, in the commissioning of the system, before the power supply, it must be carefully checked and checked carefully and must not be taken lightly.
2. Because there are many links between certain devices (such as cameras with three variable lenses and PTZ), if the handling is not good, especially if the line connected to the device is not handled well, there will be open circuit, short circuit and line. Poor insulation, incorrect wiring, etc. result in equipment damage and performance degradation. In this case, the analysis should be made calmly based on the phenomenon of failure, and it should be determined on which of the lines that the connection is faulty. This will reduce the scope of the problem. It is particularly worth pointing out that cameras with pan-tilt heads have a long time due to all-round movements, resulting in disconnection and breakage of connections that are common. Therefore, special attention should be paid to the connection of equipment and various lines in this case to meet the requirements of long-term operation.
3, the quality of equipment or components itself. In theory, quality problems may occur on various equipment and components. However, from an experience point of view, the pure quality of the product itself occurs in decoders, electric gimbals, and transmission components. It is worth pointing out that the quality of some devices may not appear to be unusable due to their overall quality. However, some technical indicators do not meet the specifications given in the product specifications. Therefore, the necessary sample testing must be performed on the selected product. When it is indeed a product quality problem, the best way is to replace the product and not to dismantle and repair it. In addition, the most common problems arise from improper adjustment of the equipment. For example, the adjustment of the intercept after the camera is a very detailed and precise task. If the adjustment is not carefully performed, problems such as poor focusing or defocusing during various operations of the three variable lenses may occur. In addition, whether the positions of some switches and adjusting knobs on the camera are correct, whether they meet the technical requirements of the system, or the correctness of the encoder coding switch or other adjustable site settings directly affect the normal use of the device itself or affect the normal performance of the entire system. .
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