Before the installation of the equipment (or components), commissioning and power-on experiments should be performed as required. However, despite this, it is also common for equipment (or parts) to cause problems due to certain reasons during the installation process.
First, equipment failure caused by incorrect power supply. 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, the device may be damaged due to power supply errors or instantaneous overvoltage.
Second, due to the poor handling of certain lines, especially the lines connected to the equipment, circuit breakers, short-circuits, poor insulation between lines, miswiring, etc. result in damage to the equipment (or components), degraded performance, or no damage to the equipment itself. , but the phenomenon is reflected in the equipment or components. Because some devices (such as cameras with three variable lenses and PTZ) have many lines that are often not processed properly, the above problems will occur. In particular, the quality of some connectors is poor, and the connection process is not good. This is a common cause of problems. 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. For example, a camera with three variable lens image signal is normal, but the lens can not control, you do not have to check the video output line, but just check the lens control line on the line. In addition, connectors, especially BNC type connectors, have very high requirements for the welding process and the connection and installation of video cables. If they are not handled properly, even if there are no problems during the commissioning and commissioning phases, problems occur after a period of operation. 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.
Third, the quality of equipment or components itself. In general, there should be no quality problems with carefully selected commercialized equipment or components. Even if something goes wrong, it often happens after the system has been delivered and run for a long time.
In addition to the quality of the product mentioned above, the most common problem is due to improper adjustment of the equipment. For example, the adjustment of the intercept after the camera is a very precise and precise job. Without careful adjustment, problems such as poor focusing or defocusing in various operations of the three-variable lenses may occur. In addition, whether the positions of some switches and adjustment knobs on the camera are correct, whether they meet the technical requirements of the system, the correctness of the decoder code switch or other adjustable position settings directly affect the normal use of the device itself or affect the normal performance of the entire system.
Fourth, the connection between the device (or component) and the device (or component) is incorrect. This issue will generally occur in the following areas:
1. The impedance does not match. If the video is connected to a monitor with a high impedance, there will be very bright images, jitters, or sometimes characters.
2. The communication interface or communication method is incorrect. This situation often occurs between the control host and a device such as a decoder or control keyboard that has a communication control relationship. This is mostly due to the fact that the selected control host and decoder or control keyboard are not products of one manufacturer. In general, different manufacturers use different communication methods or transmission control codes. Therefore, the same manufacturer's products should be used for the host, the decoder, and the control keyboard.
3, the drive capacity is not enough or exceed the specified number of device connections. For example, the number of main control keyboards and sub-control keys corresponding to the control host is regulated. Exceeding the prescribed amount will cause the system to work abnormally. Decoder pan/tilt working power is lower than the actual pan/tilt, and it cannot drive the pan/tilt.
First, equipment failure caused by incorrect power supply. 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, the device may be damaged due to power supply errors or instantaneous overvoltage.
Second, due to the poor handling of certain lines, especially the lines connected to the equipment, circuit breakers, short-circuits, poor insulation between lines, miswiring, etc. result in damage to the equipment (or components), degraded performance, or no damage to the equipment itself. , but the phenomenon is reflected in the equipment or components. Because some devices (such as cameras with three variable lenses and PTZ) have many lines that are often not processed properly, the above problems will occur. In particular, the quality of some connectors is poor, and the connection process is not good. This is a common cause of problems. 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. For example, a camera with three variable lens image signal is normal, but the lens can not control, you do not have to check the video output line, but just check the lens control line on the line. In addition, connectors, especially BNC type connectors, have very high requirements for the welding process and the connection and installation of video cables. If they are not handled properly, even if there are no problems during the commissioning and commissioning phases, problems occur after a period of operation. 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.
Third, the quality of equipment or components itself. In general, there should be no quality problems with carefully selected commercialized equipment or components. Even if something goes wrong, it often happens after the system has been delivered and run for a long time.
In addition to the quality of the product mentioned above, the most common problem is due to improper adjustment of the equipment. For example, the adjustment of the intercept after the camera is a very precise and precise job. Without careful adjustment, problems such as poor focusing or defocusing in various operations of the three-variable lenses may occur. In addition, whether the positions of some switches and adjustment knobs on the camera are correct, whether they meet the technical requirements of the system, the correctness of the decoder code switch or other adjustable position settings directly affect the normal use of the device itself or affect the normal performance of the entire system.
Fourth, the connection between the device (or component) and the device (or component) is incorrect. This issue will generally occur in the following areas:
1. The impedance does not match. If the video is connected to a monitor with a high impedance, there will be very bright images, jitters, or sometimes characters.
2. The communication interface or communication method is incorrect. This situation often occurs between the control host and a device such as a decoder or control keyboard that has a communication control relationship. This is mostly due to the fact that the selected control host and decoder or control keyboard are not products of one manufacturer. In general, different manufacturers use different communication methods or transmission control codes. Therefore, the same manufacturer's products should be used for the host, the decoder, and the control keyboard.
3, the drive capacity is not enough or exceed the specified number of device connections. For example, the number of main control keyboards and sub-control keys corresponding to the control host is regulated. Exceeding the prescribed amount will cause the system to work abnormally. Decoder pan/tilt working power is lower than the actual pan/tilt, and it cannot drive the pan/tilt.
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