Security engineer summarizes the monitoring fault solution

This article summarizes the common faults of monitoring equipment, and lists the corresponding solutions, hoping to help readers, let's take a look at it together:

1. What is the reason for the jittery feeling on the display?

This situation is generally caused by the display refresh rate being set too low. Go to "Display Properties", click "Settings", select "", then select "Monitor", adjust the new frequency to 75HZ, and you can solve it after you exit. This question.

2. Why does the monitor display a screen saver or a black screen after a period of power-on monitoring?

This situation is caused by not canceling the screen saver or improper power management settings. The solution is to exit the monitoring system to the WINDOWS operating system interface, click the right mouse button on the interface, select "Properties", select the screen saver in the tab that appears, and select (None) to release the screen saver. Then click the setting button in the lower right corner, select "Always On" in the power usage scheme, the system waits for "Never", close the monitor, select "Never", select "Never" at "Shutdown Hard Disk", then click "OK" is enough.

3. What is the reason why the digital hard disk video recorder image shows only the image without operation buttons or the screen is not full of the entire screen?

Generally, 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 video host be partitioned?

System main hard disk:

1) Establish the main partition C: (2 to 3GB) (operating system + application software.)

2) Create an extended partition (100% of the remaining hard drive)

3) Create a logical partition D under the extended partition: (generally allocated about 4GB, mainly stored in the application backup and part of the recording data)

4) Create a logical partition E under the extended partition: (remaining hard disk space) (recorded data)

5. Why does the monitor display a screen saver or a black screen after a period of power-on monitoring?

After exiting to the operating system interface, click the right mouse button on the interface, select properties, select the screen saver in the tab that appears, and select (none) to release the screen saver. Then click the setting button in the lower right corner, select "Always On" in the power usage scheme, the system waits for "Never", close the monitor and select "Never", close the hard disk and select "Never" and then confirm.

6. Why there is no display after booting?

Please make sure that the chassis and monitor are properly connected and the power is connected and turned on. During the transportation and moving of the machine body, the internal board accessories may be loosened. Open the case before turning on the machine, and confirm that the parts are tightly connected before powering on. If the motherboard self-test is abnormal during startup (normally, the keyboard indicator LED flashes once, the host buzzer emits a "beep"), please turn off the power and check whether the CPU board and graphics card are fully inserted and can be removed. Plug it in again. If the CPU fan does not rotate after pressing the power switch and the power indicator on the panel does not light, please check whether the power supply is connected correctly.

7. Under what operating system can the hard disk video card work?

The hard disk video card can be used on Windows / 2000 and supports PNP function.

8. Why does the system crash? How to recover?

When the system is not working properly due to improper setting of windows or other software failures, a system crash will occur. The following methods can be used to restore the system:

: Windows registry repair system. For example, when the system is not turned on or the monitor connection is not normal when the system is started for a certain time, the system cannot enter Windows normally when it is restarted, and can be repaired according to the following steps.

To restart, press and hold the F8 key during the startup process, select "Command Prompt only" in the startup mode selection menu, and after the startup is complete, type the following command line: scanreg / restore to select the date when the system is working normally to restore.

Second: When using the restore registry does not solve the problem, you can use the Ghost method to restore the system, provided that the Ghost backup system has been used. Use method is to start (start with hard disk or WIN98 boot disk) to DOS state, run Ghost.exe, follow the prompts to complete the system recovery

9. What should I do if there is no image display?

Reason 1: The graphics card is not compatible, and can pass the Direct Draw test. If the test can pass, it is not the reason.

Reason two: The PCI interface is not in good contact, you can change a PCI slot to test.

Reason three: Whether the board is damaged, you can consider changing another card to test.

10. Installation instructions for audio and video card drivers.

The driver of the video card can not be installed more, only to view the complete number of drivers in safe mode. Example: You have 8 cards inserted on the motherboard, you can only install 8 drivers, you should check the number of audio and video card drivers in the 'safe mode'. If the driver of the video card is more than the number of installed video cards, the system will sometimes not work properly.

Note: Four-way real-time card is equivalent to 4 independent cards, you need to install 4 drivers, and the remaining audio and video cards have one driver for each card! If you find this phenomenon, you should put all video cards in 'safe mode' Delete all the drivers (including other duplicate devices in the system), and then restart the computer.

11. Why can't the computer find the card?

Reason 1: The computer power supply is not an ATX power supply. Please use ATX power supply.

Cause two: The PCI slot of the computer is damaged. Please change another slot to test.

Cause three: The board is damaged, please change the card to test.

12. What should I do if the video playback quality is poor?

For our hard disk video recorders under the 'common' compression quality, the video playback quality is relatively satisfactory. But sometimes the "mosaic" phenomenon is more serious, especially for moving images, the image becomes blurred, the main reason is that the brightness of your camera is too low (do not try to change the brightness of the hard disk recorder to compensate), you have to re Adjust the brightness of the camera to compensate. This point should be paid special attention to in the construction of the project.

13. What should I do if the image of real-time monitoring is not clear?

In the system settings of the digital hard disk recorder, you can select "ordinary 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 satisfactory results.

14. What should I do if the program fails to start or fails to initialize?

Reason 1: The shortcut is wrong. The application cannot be hooked, the shortcut cannot be started, delete the shortcut and recreate or reinstall the program.

Reason two: The acceleration software of DirectX8.0 or above is not installed.

Cause three: The card model is not correctly identified. Run the Config.exe program only after the identification card.

Reason four: The power supply is not an ATX power supply or the power supply is not enough. Switch to a high-power ATX power supply.

Reason five: Bad contact with the board, reinstall the board.

Reason six: The software and the card are not compatible, that is, incompatible. Reflect with the product supplier.

Reason 7: There is a bad card, you need to confirm the availability of each card.

Reason eight: The PCI slot is damaged. Replace the slot and use it.

15. What should I do if the monitoring ting button does not work?

Reason one: No audio is used or the selected channel has no audio.

Cause two: The sound card is not installed or the sound card driver is not installed.

Cause three: The sound card is not working properly. It is recommended to use the Direct Sound test by running the Dxdiag.exe program in the C: \ WINDOWS \ SYSTEM directory to test the working status of the sound card. If the test fails, please follow the method below:

: Restart the computer to "safe mode", open the device manager, delete all duplicate device drivers, and then restart the installation driver, run the Dxdiag.exe program test, you can pass the test. If it still does not work, please proceed to the next step.

Second: If there is a problem with the integrated sound card, when replacing the sound card, please shield the integrated sound card in the BIOS, otherwise it cannot be used; for another sound card, run the Dxdiag.exe program test, if you ca n’t pass the test, you can only replace it Motherboard.

16. What should I do if the audio monitoring and playback are abnormal?

If the monitoring and playback audio is abnormal, the possible causes are:

Cause one: The compatibility of the system.

When installing this system using an industrial computer, it is recommended that the audio card be installed in the basic PCI slot (* slot near the CPU board).

Cause two: The sound card driver or system device driver is installed incorrectly.

In safe mode, check the sound card and system device drivers, delete the duplicate device drivers, restart the computer, and install the driver provided by the product supplier. And use DirectSound test, try to use sound card with software buffer and hardware buffer.

17. The monitoring is normal, but there is no sound during playback?

The reason is that "Allow recording" is not set, just start the audio in the software settings

18. Why is the image still?

It may be that the audio and video card has crashed. It may be that the audio and video card and the PCI slot of the computer are not in good contact. You can shut down the computer and restart the computer. If there are frequent dead cards, you can consider replacing the card; The situation may be because the system works too long, you can set the system to restart every day to relieve the pressure of the system and release the memory; you can also add a reset line connected to the computer on a card of the system to achieve automatic recovery The purpose of the system.

19. Why does the setting not work?

All settings are effective at the beginning of the next minute after the setting is completed.

20. Why is the front-end control not flexible?

The possible cause is that the decoder is not well connected with the gimbal, or the communication cable is too long. The general method is to install the decoder and the gimbal nearby, that is, the decoder is generally installed near the gimbal.