Closed-circuit monitoring system encounters problems and solutions
[ Huaqiang Security Network News ] The use of closed-circuit monitoring systems is very extensive. From a theoretical point of view, when there are problems with various equipments and products, it is mainly to learn how to solve problems. This is the most important, below. Just give you a detailed explanation.
Quality problems can occur with a variety of equipment and components. However, from the experience point of view, the quality problems of the products themselves are mostly on the decoder, electric cloud platform, transmission components and other equipment. It is worth pointing out that some equipments may not have the problem of being unusable in quality as a whole, but from some technical indicators, they fail to reach the indicators given in the product manual. Therefore, the necessary sampling tests must be performed on the selected products. If it is a product quality problem, the best way is to replace the product, and not to disassemble and repair it.
In addition to this, the most common problem is due to improper adjustment of the device. For example, the adjustment of the back intercept of the camera is very detailed and precise work. If not carefully adjusted, there will be problems such as poor focusing or defocusing during various operations of the three variable lenses. In addition, the position of some switches and adjustment knobs on the camera of Yantai Monitoring Company is correct, whether it meets the technical requirements of the system, whether the decoder code switch or other adjustable parts are set correctly, it will directly affect the normal use of the equipment itself or affect the whole system. The normal performance. Monitoring System Structure Figure 4. The problem of incorrect connection between the device (or component) and the device (or component) can occur in the following ways:
(1) Impedance mismatch.
(2) The communication interface or communication method does not correspond. This situation mostly occurs between the control host and the device with communication control relationship such as the decoder or the control keyboard. That is to say, the selected control host and the decoder or the control keyboard are not caused by a manufacturer's product. Therefore, for the host, decoder, control keyboard, etc. should use the same manufacturer's products.
(3) The drive capacity is insufficient or exceeds the specified number of device connections. For example, some picture splitters with alarm input interface in their product manuals are given to the system host connected to the alarm probe, long delay video recorder, etc., if the alarm probe is connected to the screen splitter alarm At the input end, the alarm signal of the probe will be driven to both the control panel and the screen splitter. In this case, Yantai monitoring equipment often has a problem of insufficient driving capability. The phenomenon is that although the picture splitter can alarm, but the input alarm signal is weak and the operation is unstable, so that the image picture of the camera corresponding to the alarm signal is instantaneously converted into a full screen picture on the monitor. But it is lost (can't hold), and the image on the monitor is still multi-screen before the alarm.
Quality problems can occur with a variety of equipment and components. However, from the experience point of view, the quality problems of the products themselves are mostly on the decoder, electric cloud platform, transmission components and other equipment. It is worth pointing out that some equipments may not have the problem of being unusable in quality as a whole, but from some technical indicators, they fail to reach the indicators given in the product manual. Therefore, the necessary sampling tests must be performed on the selected products. If it is a product quality problem, the best way is to replace the product, and not to disassemble and repair it.
(1) Impedance mismatch.
(2) The communication interface or communication method does not correspond. This situation mostly occurs between the control host and the device with communication control relationship such as the decoder or the control keyboard. That is to say, the selected control host and the decoder or the control keyboard are not caused by a manufacturer's product. Therefore, for the host, decoder, control keyboard, etc. should use the same manufacturer's products.
(3) The drive capacity is insufficient or exceeds the specified number of device connections. For example, some picture splitters with alarm input interface in their product manuals are given to the system host connected to the alarm probe, long delay video recorder, etc., if the alarm probe is connected to the screen splitter alarm At the input end, the alarm signal of the probe will be driven to both the control panel and the screen splitter. In this case, Yantai monitoring equipment often has a problem of insufficient driving capability. The phenomenon is that although the picture splitter can alarm, but the input alarm signal is weak and the operation is unstable, so that the image picture of the camera corresponding to the alarm signal is instantaneously converted into a full screen picture on the monitor. But it is lost (can't hold), and the image on the monitor is still multi-screen before the alarm.
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