Q:Camera clarity, 1080p. 3mp. 4k, what does it mean

4K, that is, 3840 × 2160 pixel resolution

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:Monitor the camera what models

The hemisphere of the shooting of the infrared high-speed ball speed dome monitoring equipment surveillance camera Beijing United States and the United States and China Science and Technology Co., Ltd.

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:Do you want to monitor the camera?

Strong delivery is to talk about the power adapter on the camera side, the transmission line is 220v. Suitable for camera from the camera collagen.

Q:Install the monitor camera need to put a few lines

A camera needs two lines, a video cable, one with the power cord, in addition to the alarm line, if you encounter an emergency situation, you can alarm, if you need to do monitoring the camera to install, you can find a news sensitive monitoring installation the company.

Q:Monitor host can not find the camera ip how to do?

Please make sure that the equipment is working properly (power supply is normal).

Q:3 megapixel surveillance cameras store much day

3600 seconds (per hour) * 24 hours (per day) * Rate (128kbps-8Mbps) / 8 (conversion of bytes and bits) / 1024 (converted to M) / 1024 (converted to G) ≈42G (bit rate is 4Mbps)

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.

Q:Monitor the camera has a video port, what is this mouth, then what machine, direct access to the TV can you?

Is BNC port, direct access to TV no problem, then the old TV video line is a BNC, one is the Lotus head, then LCD TV two are BNC; only the camera directly to the TV, then only on-site monitoring,