Q:How to connect a hard disk video recorder to a computer

(3) hard disk video recorder itself is a separate recording, operation and other monitoring functions of the host, do not need to connect with the computer. Because the hard disk video recorder is a separate function of the host, even with the computer connection, the computer host is open, the DVR can be normal video. Now the video recorder basically support network access, the video recorder and computer network cable docking, install the CMS software or through the browser to access the IP address of the video recorder can play the recorded video recording.

Q:An accurate calculation formula for monitoring the focal length and actual distance of the lens

While the use of long focal length lens can see the car's license number (the car occupies most of the area on the screen), but can not monitor the entire car park

Q:Monitor the camera focal length 3.6mm 4mm 6mm. What is the meaning?

Mm is the lens of the aperture, the number of millimeters, not the bigger the better, the smaller the camera according to the wider picture, the larger the lens the more narrow the picture clear

Q:What is the power consumption of the camera day?

According to the DC power conversion efficiency of 80%, the input power = 18W / 0.8 = 22.5W

Q:Monitor the type and purpose of the equipment

4. Infrared camera, this camera in the case of light enough for the color, in the absence of light and light dark case, the infrared light to open, to black and white monitoring. Applicable to Internet cafes, underground passage, garage and other dark places.

Q:What do I need to do with video surveillance systems?

Video surveillance system consists of real-time control system, monitoring system and management information system. Real-time control system to complete the real-time data acquisition and processing, storage, feedback function; monitoring system to complete the monitoring of all-weather monitoring, multi-operation control point to switch multiple images; management information system to complete the required information collection , Receive, transfer, processing, processing, is the control of the entire system core.

Q:Monitor the camera's focal length 4 meters good or 8 meters good

General surveillance camera focal length is not 4 meters 8 meters, and some words are estimated that the focal length of the telescope. I think you focus on the unit you did not understand, monitor the camera focal length of 2.4,4,6,8,10 ... and so on

Q:HD surveillance cameras are common faults

1) check the camera's power is normal, the infrared machine to cover the photoresistor when the infrared light will open, and can hear the sound of the IR cut switch;

Q:Use home computer camera how to install home monitoring?

Want to know what happened at home, connect the phone can play, if it is their own home camera is not very good type, buy a camera is one or two hundred, as for the installation will certainly need to find a professional person to install, Guangzhou video video Can provide a good program, the last use of their home, but also OK.

Q:I installed a monitoring camera admin user password forgotten! How do you handle

Terry: username admin password empty