Q:What is the difference between a network video encoder and a hard disk video recorder? And bolt machine cameras are the same as security monitoring? What kind of network video encoder used

Network video encoder is the use of front-end analog camera information encoded into digital information, and then transmitted through the network.

Q:Can the general camera be monitored?

All cameras can be monitored, but not all cameras are suitable for monitoring. The purpose of monitoring is to clearly record the process of the incident, which requires the performance of the camera as a monitor to suit the work environment, site conditions and other requirements.

Q:Hello, because no electric video recorder did not manually set, but I would like to look back a few days before the monitor can be transferred out

3, the operator will not operate the hard disk video recorder, did not correctly follow the normal steps to call the DVR video. 4, hard disk video recorder motherboard problems.

Q:What kind of surveillance camera is good for the hotel?

Elevator: Suitable for use with some miniature cameras such as a flying saucer camera, or a small hemisphere. Installation is simple, the overall effect is beautiful

Q:Monitor the camera if the power supply to him a large current, pay attention to the current is not the voltage, the voltage is 12V, then what will happen to the camera?

The current is very rare to see this situation, but the current is low, then I am sure that the monitoring head will appear like a pattern like interference

Q:What color is the monitor when the camera is turned on?

You should be equipped with infrared camera infrared camera infrared light with LED lights and photosensitive resistors, when the light is lower than the infrared light is lower than the minimum illumination of the infrared light when the infrared light will open, most of the red, there are White light and no red light at night no light, the specific and the relationship between the wavelength of infrared light.

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 number of lines that a surveillance camera needs to use?

2, video cable (transmission video signal, syv75-3, syv75-5, syv-75-7 these three are the most commonly used)

Q:How to install a surveillance camera

4. Switch to the video settings, wait a few seconds after you should see the video screen, display the video device to start successfully, and you can see the screen.

Q:What is the difference between monitoring the camera and the usual?

2. Wiring problem: The first transmission distance