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Summary of common fault repair methods for video surveillance systems
1. What is the reason why the display display has a sense of jitter?
This situation is generally caused by the display refresh rate setting is too low, enter the "display properties" click "set", select "advanced", then select "monitor", adjust the new frequency to 75HZ, determine the exit can be resolved This problem.
2. Why does the monitor appear screen saver or black screen after booting for a period of time?
This situation is caused by not canceling the screen saver or improper power management settings. The solution is to exit from the monitoring system, right click on the interface, select "Properties", select the screen saver in the tab that appears, select (none) one to cancel the screen saver. Then click the Settings button in the lower right corner, select "Always open" in the power usage scheme, the system waits for "Never", closes the monitor and selects "Never", "Close the hard disk", select "Never", and finally click "OK".
3. The digital hard disk recorder image shows that only the image does not have an operation button or the screen is not full of the entire screen. What is the reason?
Under normal circumstances, the display resolution setting does not meet the requirements, set the desktop resolution to 1024 * 768, and change the small font to a large font.
4. How should the hard disk recording host be divided into zones?
System main hard drive:
1) Create a primary partition C: (2 to 3GB) (operating system + application software.)
2) Create an extended partition (100% of the remaining hard disk)
3) Create a logical partition D under the extended partition: (usually allocated about 4GB, mainly stored in the application backup and part of the video data)
4) Create a logical partition E under the extended partition: (remaining hard disk space) (video material)
5. Why does the monitor appear screen saver or black screen after booting for a period of time?
After exiting to the operating system interface, right click on the interface, select the property, select the screen saver in the tab that appears, and select (none) to cancel the screen saver. Then click the Settings button in the lower right corner, select "Always open" in the power usage scheme, the system waits for "Never", closes the monitor and selects "Never", closes the hard disk and selects "Never" and then confirms.
6. Why is there no display when booting?
Make sure the chassis and monitor are properly connected and the power is connected and turned on. During the transportation and moving process, the internal board components may be loosened. Open the chassis before starting the machine, and confirm that the components are plugged in and out before powering on. If the motherboard self-test is not normal when booting (normally, the keyboard indicator LED flashes once and the host buzzer sounds "嘀"), please turn off the power, check whether the CPU board and graphics card are fully inserted, and remove the card. Plug it in again. If the CPU fan does not turn and the panel power indicator does not light after pressing the power switch, check that the power supply is properly connected.
7. What kind of operating system can the hard disk video card work under?
The hard disk video card can be used on Windows/2000 and supports PNP function.
8. Why is there a system crash? How to recover?
A system crash occurs when improper settings for Windows or other software failures cause the system to work improperly. The system can be restored in the following ways:
First: the Windows registry method to repair the system. For example, when the system is started, the monitor is not turned on or the monitor is not connected properly, so the system cannot enter the windows normally when the system restarts. You can repair it as follows:
Restart, press and hold the F8 key during startup, select "Command Prompt only" in the startup mode selection menu, and type the following command line after startup: scanreg/restore selects the date when the system is working normally.
Second: When using the recovery registry does not solve the problem, you can use Ghost to restore the system, provided that the Ghost backup system has been used. The method of use is to start (boot with hard disk or boot from WIN98 boot disk) to DOS state, run Ghost.exe, follow the prompts to complete system recovery.
9. What should I do if there is no image display?
Cause one: The graphics card is incompatible. It can be tested by Direct Draw. If the test can pass, this is not the reason.
Cause two: The PCI interface is not in good contact. You can change the PCI slot test.
Reason 3: If the board is damaged, consider changing a card test.
10. Installation instructions for audio and video card drivers.
The driver for the video card cannot be loaded, and only the full number of drivers can be viewed in safe mode.
Example: You have 8 cards plugged into the motherboard. You can only install 8 drivers. You should check the number of audio and video card drivers in 'Safe Mode'. If the video card driver is redundant with the number of video cards installed, the system sometimes does not work properly.
Note: The four-way real-time card is equivalent to 4 independent cards. You need to install 4 drivers. The rest of the audio and video cards are installed with one driver per card! If you find this phenomenon, you should put all the video cards in 'safe mode'. The drivers are all removed (including other duplicate devices of the system) and then restarted.
11. Why can't the computer find the card?
Cause one: The computer power supply is not an ATX power supply. Please use ATX power supply.
Cause two: The computer PCI slot is damaged. Please change to a slot test.
Cause three: The board is damaged. Please change the card test.
12. What should I do if the video playback quality is poor?
For our DVR's 'normal' compression quality, the video playback quality is satisfactory. But sometimes the 'mosaic' phenomenon is more serious, especially for moving images, the image becomes blurred, the main reason is that your camera brightness is too low (do not try to change the brightness of the DVR to compensate), you have to re Adjust the brightness of the camera to compensate. This point should pay special attention to the construction of the project.
13. What should I do if the image monitored in real time is not clear?
In the system settings of the digital video recorder, you can select "normal camera" or "high definition camera" according to the model or resolution of the configured camera. At the same time, you can also adjust the brightness, chroma, contrast and saturation of the video. Value to achieve a satisfactory result.
14, monitoring is normal, but no sound playback?
The reason is that "Allow recording" is not set, and the audio can be started in the software settings.
15. Why doesn't the settings work?
All settings are valid at the beginning of half a minute after the setup is complete.
16. Why is front-end control not flexible?
The possible cause is that the decoder and the PTZ are not well connected, or the communication cable is too long. The general method of use is that the decoder and the PTZ are installed nearby, that is, the decoder is generally installed near the PTZ.