With the improvement of people's life,cctv security camera and video surveillance system take a important role in the life. There are some information of intelligent video surveillance system.
1. What should I do if the DVR suddenly loses power during operation?
A: Turn off all peripherals first.
B: When a call comes in, turn on the peripherals first, and then turn on the host to power on in sequence.
C: After the system self-test is completed, run the operating system.
2. What are the main functions and functions of the AV controller in the server-side monitoring system?
A: Collection of video signals.
B: Send and receive audio signals.
C: Built-in modem remote transmission module.
D: Remote access connection.
3. What is the role of the DVR capture card in the server-side viseo surveillance system?
Video signal acquisition, convert analog video signal to digital signal.
4. How to check the power supply of the device through the status of the power indicator on the panel of the AV controller (or monitoring host)?
If the power indicator is on, the power supply is normal. If it is off, check whether the power supply device is working properly.
5. Which communication protocol are used between video and audio controllers (or monitoring host, monitoring sub-machine, PTZ decoder)?
RS-485 protocol is adopted between devices.
6. What is the role of the gimbal in the video surveillance system?
By controlling the pan / tilt to perform horizontal and vertical movements, and controlling the pan / tilt camera to zoom, focus and other operations, the monitoring area can be monitored more comprehensively and clearly.
7. The client cannot establish a connection with the server. What is the possible cause of the failure on the server?
A: The telephone line is faulty or the connection is incorrect.
B: The modem is faulty or the connection is incorrect.
C: The remote transmission module is faulty or the power supply is incorrect.
D: The video and audio controller motherboard is faulty.
8. What are the requirements for remote connection to the server-side telephone line?
The analog telephone line of the telecom bureau has a transmission rate of not less than 10K, and the sound is not available when it is less than 15K.
9. How to solve the problem that the video image of the camera is blurred or whitish at night?
A: The image is blurred at night, readjust the focus of the camera.
B: If the image is whitish, the irradiation angle of the infrared lamp can be adjusted.
10. A simple method of judging the blue screen fault on the server monitor?
A. Check whether the video signal routing input is correct.
B. Check whether the video signal input Q9 head is in good contact with the video input terminal of the video and audio controller or whether the input Q9 head is soldered or not.
C. Check whether the power of the video signal camera is normal.
D. Check if the video line is broken or short-circuited.
E. Check whether the camera or lens is damaged.
10. A simple method of judging the blue screen fault on the server monitor?
A. Check whether the video signal routing input is correct.
B. Check whether the power of the video signal camera is normal.
C. Check if the video line is broken or short-circuited.
D. Check whether the camera or lens is damaged.
11. Reasons for PTZ control failure:
A. The transmission line is too far;
B. The transmission line has interference;
C. Too many front-end control devices
Solution:
A. Check the line to eliminate interference;
B. Install a code distributor at the back end
12. Why does the video surveillance camera display black bars at night?
A. The power supply is not enough;
B. External interference;
C. The camera itself is malfunctioning.
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