Standalond Digital Video Recorder DVR NH-D0813-B1

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Standalond Digital Video Recorder DVR NH-D0813-B1


• Input:1080p@60fps,1080p@50fps,
  
1080p@30fps,1080p@25fps
• Output:Max.1920*1080
• Input:8 HD-SDI,8 RCA
• Operating System:Embedded Linux OS
• SATA Devices:Max.x7 SATA Devices
• Serial Interface:RS-485 x2
• USB 2.0 Ports:2 x USB2.0
• Power Rating:AC110/220V 220W
• Mode:Zoom(Digital x2~x5),PIP,Auto SEQ
• Compression:H.264 High Profile
• Record Rate:NTSC 1080p 240fps,PAL 1080p 200FPS
• Network Interface:10/100/1000 Ethernet
• Protocol:TCP/IP,SMIP,HTTP,DHCP,PPPoE


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Q:HD surveillance cameras are common faults
3) check whether the IP address of the camera and other IP devices within the LAN conflict, the host's IP address and IP address of the camera is in the same network segment;
Q:Monitoring camera POE power supply is good, or centralized power supply good?
The use of transformer front-end power take advantage, do not have to consider the line loss, because there are transformers can reduce the loss of lightning to the lowest (of course, lightning B is not guaranteed, are force majeure; unless there is a special contract), after-sales fault detection, Check the problem is out of the camera or power problems, with the lights of the transformer is a glance!
Q:Home wireless surveillance camera price, how much money?
Home monitoring equipment is a co-ordination concept, because at this stage of China's domestic monitoring equipment without a clear distinction, the traditional analog monitoring system can also be used as a home monitoring equipment; now high-definition wireless network camera can also be used as a home monitoring equipment. Therefore, for different monitoring systems, the price of its home monitoring equipment is not the same.
Q:What is the black box that monitors the camera connection?
There may be a power adapter, there may be Guangduan Ji, there may be a video distributor, there may be a screen splitter, there may be a hard disk video recorder, do not know which one you say.
Q:What is the minimum illuminance indicator of the surveillance camera?
Therefore, the use of different F value of the lens, the camera's minimum illumination value of the determination will have a decisive impact. Second, the light source color temperature. The color temperature is an indicator of the light wavelength content in the light source. A 3200K light source is mostly between 600 nm and 900 nm, and a 9300K light source is between 300 and 500 nm, so the different color temperatures will change completely Test Results. On a typical CCD sensor, a light source with a wavelength of 600 nanometers will produce 10 times more electrons than a wavelength of 900 nanometers. This is why the color temperature is particularly marked for the meaning of the minimum illumination measurement results.
Q:What is the difference between a camera and a monitor?
With the monitoring system in the commercial and civilian increasingly popular, surveillance cameras (surveillance cameras) are widely used in various fields, escort for social security. Video surveillance cameras are widely used in residential, real estate villas, shopping malls shops, financial room, to security.
Q:I would like to ask how the video surveillance camera is powered?
You are right, video surveillance cameras used to make a signal with a coaxial line, and then another line when the power supply, but the two lines can also be a line to achieve. That is to use control Because the control line is a double core, with a shield, we can put the video ground, and the power of the negative line, together, sharing a line, that is, the control line of the shield, and then Inside the two core, one when the video signal is positive, one when the power is positive. This can, but if the distance is very long, it is recommended not to do so, because of this, the signal shielding will be a little interference.
Q:Monitor the camera what is the zoom
The lens is equivalent to the human eye lens, if there is no lens, the human eye can not see any objects; if there is no lens, then the camera output image is a vast expanse of white, no clear image output, which with our home camera and camera principle Is consistent. When the human eye can not stretch the lens to the normal position, that is, people often say myopia, the front of the scene becomes blurred; camera and lens with a similar phenomenon, when the image becomes unclear , You can adjust the camera's back focus, change the CCD chip and the lens reference plane distance (equivalent to adjust the position of the human eye lens), you can blur the image becomes clear. Thus, the role of the lens in the closed-circuit monitoring system is very important. Engineering designers and construction workers should often deal with the lens: the designer according to object distance, imaging size calculation lens focal length, the construction staff often on-site commissioning, part of the lens is to adjust to the best condition.
Q:What kind of surveillance camera points
Infrared integrated camera, integrated camera, infrared hemisphere, ordinary hemisphere, explosion-proof hemisphere, uniform speed ball, medium speed ball, high speed ball, network camera, gun camera and so on.
Q:Monitor the use of the camera
There are two main aspects: First, early prevention, the deterrence of the criminals and the role of warning; the second is to follow the trail, and soon crack the case, arrested criminals.

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