Q:The VCR monitors how the computer is connected

(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

The size of the imaging scene and the size of the imaging object are contradictory, for example, with the same camera to monitor the same parking lot, the choice of short focal length lens can be the entire parking lot to monitor and see the entrance Outside the vehicle out, but can not see the car's license number (the car in the monitor screen only occupies a small area)

Q:Monitor the camera when shooting white, is the kind of white, basically do not see the image, and exposure like

Your camera should be the kind of fixed focus is not adjustable I can clearly tell you that your CCD chip problems Warranty bar as long as no burn is to free repair

Q:What color is the monitor when the camera is turned on?

Most of them are red, there are white light and no red light at night no light, and the specific relationship between the wavelength of infrared light.

Q:How to use the network cable to connect the surveillance camera?

Network cable to do monitoring line in two ways, but depends on the camera's video transmission.

Q:Camera monitor the recorded file 1 hour how much G ah?

Analog surveillance camera video files per hour about 220M, digital surveillance camera video files per hour about 900M.

Q:Test on camera delay problems

Today, the monitoring of products into the Internet era, vision of the world brand camera has achieved high-definition monitoring effect, in addition to the front of the network surveillance cameras, the video transmission and back-end storage, display process must also be carefully designed, how to achieve high quality , No delay effect is the current monitoring application focused on solving the problem

Q:The monitor camera does not display the image on the display

First, the camera is broken, two, the information line and plug the connection is not good, three, the camera driver is not installed, the resolution is too high tune.

Q:Surveillance video can only save 4 days (the original can save about 15 days), is not the hard disk video recorder is a problem?

You are not modified to save the format of the ~ !! You can choose to format the hard disk ~ !! Clear all the contents of the inside to see

Q:HD camera is said that his clarity, infrared camera is that it's night vision function, in order to highlight the main features of the name of a

3, PTZ is able to drive around the camera, up and down the rotation of the equipment, with it, you can achieve all-round camera within the classroom. In general, a fixed camera, can only see the classroom about 60% of the students, and the use of PTZ cameras can see the classroom in all directions and podium, blackboard. It can be mounted on a wall or ceiling. Selection of JIYEL produced JY-8009 indoor indoor pan / tilt, with a small size, beautiful appearance.