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 the relevant data, such as: hard disk capacity, disk array number, the required RAID level. For this calculation, you can recommend a video monitor memory capacity calculator developed by the Chinese Blue Whale. As long as you enter a number of related data, it will automatically calculate the results you want. You can also use this software to calculate the monitoring storage capacity. Specific you can log on their official website to see.

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:Dvr monitor the video recorder without image output is what the problem

What show? Is the connection right? Machines and connections are no problem, that is, the connection and display and video recorder display mode no election.

Q:Remote monitoring principle

Network communication using TCP / IP and network multicast (Multicast) technology, to maximize the use of the network transmission performance and network bandwidth, to avoid network congestion.

Q:A camera for an hour how much space

This depends on the camera to shoot the quality of the picture, give you a camera 130W, each picture is 30K look, the picture is 10 Zhen, then every 10 is the screen, that is 300K, 1 hour 3600 seconds , Take out 1080000KB to remove 1024, that is, 1G look like

Q:Monitor the image of the camera appeared black and white colorless situation, is this how is it?

What about the surrounding environment? If the ambient light is poor, there will be black and white screen. If you take into account the machine itself, the photoresistor may be broken and can not be switched.

Q:The camera used to monitor the color of the screen is not normal. Blue as red. Red out is blue. New to buy the camera

First of all, you have to make sure your camera is no problem. Secondly, I would like to ask. Your camera is a centralized power supply, or a single power supply, power supply line transformer is not too far away from the camera

Q:What is the name of the camera with the monitor?

Infrared waterproof integrated camera I have two, you see is not what you want!

Q:How quickly remember to monitor the camera model, to do business, such as the DS_2CD3T20D-I5 which is what is the Thank you

1.1 The model of the product should be in uppercase letters and Arabic numerals. The specific representation of each part of the model is shown in Figure 1.

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

2, the lens sub-focus lens and zoom lens. Zoom lens focal length is variable, the scene can be closer to or push away, to achieve several times the zoom effect, use it to the blackboard on the board book clearly, can also be the whole picture of the classroom, the focus can not be achieved this function. Equipped with a lens for the electric three variable lens, can be zoom, focus and aperture adjustment. Zoom to zoom in and out of the picture, change the viewing angle and image size; adjust the focus and aperture, adjust the image clarity. Can be classroom teacher or a student's big picture clear real-time fixed in the entire screen, can also push to the whole class image.