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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.s
What is the reason for monitoring the camera's black screen?
- First, check the power supply under the surveillance camera is a problem, if it is infrared surveillance cameras, can see the red light at night, then that power supply normal; if not, you can use a multimeter on the power supply and power lines to measure.s
Panasonic surveillance camera wv-cp704 / ch corresponding to which foreign models
- 3. That equipment directly connected to the computer test, whether normal. Gradually discharged to determine the key to the problem!s
P2p wireless monitoring camera how to achieve remote monitoring
- The camera can set ip, and then do port mapping on the network switch. As long as the remote computer to enter your camera where the network ip address and port number can be remotely entered.s
Monitor the hard disk on the recorder is what format without formatting
- Continuous monitoring, then, hard disk is full, automatically erased the oldest video, recorded the new. Loop video.s
The working principle of the camera with infrared light
- First, the characteristics of infrared and infrared light light is an electromagnetic wave, with the same nature as the radio waves. Its wavelength range is from several nanometers (1nm = 10-9m) to about 1mm (mm). The visible wavelength is from 380nm to 780nm, the wavelength of visible light from long to short into red, orange, yellow, green, blue, blue, violet, the wavelength is shorter than the purple light, the wavelength of visible light is only a part of the visible light, visible light Called ultraviolet light, the wavelength is longer than the infrared light called infrared light. Infrared light wavelength between 780nm ~ 1000μm, located between the radio and visible light. Infrared light according to its infrared radiation mechanism is divided into semiconductor solid light (infrared emission diode IR LED) infrared light and heat radiation infrared light two. At present in the CCTV infrared camera in the former use more.s
What is the number of millimeters that monitor the camera?
- General surveillance camera to see the 4mm, 6mm, 8mm, 12mm, 16mm These lenses are generally divided into wide-angle, ordinary, long focal length, you can according to the parameters of the range, the most important thing is your camera installation location to You monitor the distance of the area.s
Monitor the camera automatically zoom, electric zoom, manual zoom, zoom lens meaning and difference?
- In the surveillance camera, there is generally no automatic zoom, but there is auto focus, such functions generally appear in the integrated camera, the decoder sends a zoom signal to the camera, the camera to zoom work, zoom work is completed, then the image Is blurred, you need to focus, a lot of integrated camera with auto focus function, to complete this focus work. There are some high-end camera (mainly high-speed ball) with a trajectory function, which is set in advance camera rotation and zoom information, after this camera has been set in accordance with the set of good track non-stop tour, which can see Do automatic zoom.s
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