Q:Outdoor surveillance camera what brand good ah

According to the camera brand, then the following brands are very good.

Q:What is the reason for monitoring the camera's black screen?

Second, check the next line is a problem, if the line is no problem, it may be a camera is broken, you can use the replacement method for testing, with a good camera to replace the test, if there is an image that the camera is bad The

Q:What are the problems with the surveillance camera?

What things used for a long time more or less will be some problems, there are many causes of these problems, there may be the quality of the camera itself, a part of the problem, there may be improper installation, improper connection or use too long some Normal damage or other cause

Q:Wireless surveillance camera security is not? Easy to be peeped not? LAN and external network access speed how?

That visit is the time of video transmission, of course, will be faster in the local area network if you want to visit soon need to have a high bandwidth of LAN connection.

Q:What is the number of millimeters that monitor the camera?

And then the zoom is generally wide angle is more than 90 degrees above the normal is about 30 degrees long focal length is less than 20 degrees

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

This is the reason for the collection card, the problem is installed after the acquisition card.

Q:Monitor the farthest distance from the camera can be far, which manufacturers out

Install the variable speed movement of the ball machine lens can achieve 30 times zoom, the focal length is generally from 4mm to 96mm, monitoring distance can reach about 150 meters.

Q:Monitor the camera 1/3 and 1/4 of the difference there is nothing different CCD what is it

CCD, English full name: Charge-coupled Device, the Chinese full name: charge-coupled components. Can be called CCD image sensor, also known as image controller. A CCD is a semiconductor device that converts an optical image into a digital signal. The tiny photoreceptor implanted on the CCD is called the pixel (Pixel). The higher the number of pixels on a CCD, the higher the picture resolution it provides. The CCD acts like a film, but it converts an optical signal into a charge signal. CCD has a number of neatly arranged photodiode, can sense the light, and the optical signal into electrical signals, the external sampling amplifier and analog conversion circuit into digital image signal.

Q:Digital surveillance camera how to increase? Each head of the ip are 192.168.1.10 now have ten cameras. Ask how to do?

Modify the last two digits of each camera is like a 192.168.1.11,192.168.1.12, ...

Q:The working principle of the camera with infrared light

Infrared emission diode (IR LED) infrared lamp principle is: by the infrared light-emitting diode matrix composed of light. Infrared emission diode from the infrared radiation efficiency of high materials (commonly used gallium arsenide GaAs) made PN junction, plus forward bias voltage to the PN junction injection current excitation infrared light. Spectral power distribution for the central wavelength of 830 ~ 950nm, half-peak bandwidth of about 40nm or so, it is narrowband distribution, for ordinary CCD black and white camera can feel the range. The emission power of the infrared light emitting diode is expressed by the irradiance μW / m2. The maximum radiation intensity of the infrared diode is generally in front of the optical axis and decreases with the increase of the angle between the radiation direction and the optical axis. The radiation intensity is 50% of the maximum value of the angle is called the half intensity radiation angle, that is, half power angle. The radiation angle of the infrared light emitting diodes of different packaging process models is different.