![]() The setup and configuration of the spot out channels or matrix depend on the particular options of each DVR. Instead it is used to display only the video output from one channel, cycle through various channels, or display a matrix of channels. Unlike the BNC video out, it does not output the DVR user interface and does not allow for any interaction with the DVR. Unlike the BNC video out mentioned above, spot out is a special output reserved for spot monitors. Spot or spot out is also a BNC video output. HDMI out can be found on many DVRs including the full line-up by TechPro Security Products. One major difference is that HDMI is capable of resolutions up to 1920 x 1280 (1080P). Like BNC & VGA out the HDMI port is used to manage your DVR settings via the local interface, view your cameras in real-time or search for and review recorded video. VGA is most common on computer monitors or later model Plasma, LCD and LED televisions. The VGA port essentially does the same thing as the BNC out but will accommodate devices with VGA Inputs. You can use a BNC to composite video adapter if you have the composite-in available. The display must have a BNC connection or composite video in. The BNC Video Out lets you connect a TV or monitor to view your DVR user interface and security cameras. There are also 8, 16 and 32 Channel models available. This unit is capable of recording up to 4 separate video streams, making it a 4 channel DVR. Each camera will have its own dedicated coaxial cable running to each of the ports on the back of the DVR to transfer the video. BNC connectors where originally designed for the military as a quick connect/disconnect RF connector for Coaxial cable.Ĭoaxial cable is similar to the cable you might have in your home connected to your cable box. ![]() ![]() Let’s start with “Video In”.Īs you might expect this is where the cables that come from each security camera get plugged in. ![]() We will use the TechPro Security Product’s “ 4 Channel Ultimate Mini Series D1 Real-time Security DVR” to explain the most common inputs and outputs.Ībove is the back of the DVR-LT4120MHD sold by Looking from left to right you will see several components, ports, and jacks with labels such as “Video In”, “Video Out”, “Mic In”, “Spot”, “RS232”, “VGA”, “HDMI”, and so on. Although the various features and options vary between models, there are usually standard components that can be found on most DVRs. At first glance the back of a security DVR might look very complicated to the average person. ![]()
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