Q:Monitor the hard disk on the recorder is what format without formatting

Some video recorders have several hard drives. A record after the automatic record in the next hard disk. After the hard disk, you can remove the archive, put on a new one. You can not remove, then a few hard disk cycle recording, and the earliest images erased.

Q:Ask the professional to answer, monitor the camera with water ripples

There is a woody jam on the monitor. The presence of this kind of interference does not overwhelm the normal image at a slight time, and the image can not be viewed in a serious way (even breaking the sync). This kind of fault phenomenon is more complicated and complicated.

Q:Hai Kang camera how remote monitoring

It is estimated that your computer browser settings caused by errors, look at your friends home browser settings option, then there is the general remote monitoring is to install the plug-in, there are generally prompted to install, you have to install after the end See the image.

Q:Video surveillance video storage how to calculate the hard disk needs I use the 720P camera, to store 3 months of video, need to use the hard disk?

If you want to calculate the number of hard disk and disk array, then you need to know more relevant data, such as: hard disk capacity, disk array number, the required RAID level. Give you recommend a video from the blue whale developed by the video monitoring capacity and hard drive number calculator, as long as you enter the relevant data, on this calculation, it will automatically calculate the results you want. You can go to their official website to see.

Q:What is the number of lines that a surveillance camera needs to use?

3, the control line (it is the PTZ, the spherical camera control line, with a two-core dvvr line)

Q:Will monitor the camera should buy much. Room size of 8 meters 7 * 3 meters 3, is expected to use four camera monitoring head. Will the camera to buy much?

Bar if it is a cash register, then you can choose to install a adjustable bolt, focal length adjustable.

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 picture the more narrow the picture, the large number of millimeters of the lens is equivalent to the local zoom, The need to size, the size of the number of millimeters of the lens price is the same, there is a picture below you look at it to understand

Q:Monitor the camera lens focal length is what the situation according to the scope of the big focal point what the situation according to the clear

Dome cameras generally have 2.5mm, 3.6mm, 6.0mm.

Q:HD surveillance cameras are common faults

2) ping the IP address of the camera to see if it can ping 通, if not check the network connection, such as lines, network cards, crystal head, etc. whether fault;

Q:What does it mean to monitor the camera channel?

Such as: ordinary hard disk video recorders support 16 video signals, so that the back of the hard disk video recorder has 16 video input interface, the channel refers to the physical location of these video interfaces, generally from left to right sort.