when you ask for a security camera system you must decide which video recorder is suitable for your property. No need to panic! this article will help you to get a clear idea about differences between a Network Video Recorder (NVR) and a Digital Video Recorder. First things first, let’s see how these recorders connect with cameras and what components included in the recorders. Video recorders process data differently therefore each recorder has its own camera types such as Network video recorders use IP cameras whereas digital video recorders use analog cameras. In NVR systems video data is encoded, processed in camera and then stream it to the recorder for storage and remote viewing capabilities whereas DVR systems process video data directly in recorder. have a look at the following image to clarify basic differences between NVR and DVR.
DVR | Digital Video Recorder
for the few past years DVR technology is being specilized in analog high definition. you might have noticed that DVR based security system are cheaper than NVR systems. The lower price caused DVR systems reach a certain point but to learn more about DVR lets break down to its core technologies and components.
Camera Type | Analog
using DVR system has its own limitations because to use DVR system camera type must be an analog cameras also known as CCTV cameras. since DVR only use analog cameras its much less costly than NVR systems.
about the technology, Analog cameras stream its video data directly to the recorder and then recorder encode the video data into images for the user. The advantage of this system is the reduced complexity required of the camera when compared to an NVR system.
Cable | Coaxial BNC Cable
The camera connects to the DVR using coaxial BNC cable but the use of coaxial cable may not seem significant, it does have some limitations such as the coaxial cable dosent provide power to the cameras. the cable comes with both power and video cable and we have to separate each end to provide separate functions as well as DVR must be installed near a power outlet.
The size of the coaxial cable can make installations more challenging since its much more wider in diameter and harder than ethernet when installer has to run cables through tight spaces. however if your property has existing coaxial connection installed for the previous security system , you can use the same cables to connect your new security camera system. another issue with coaxiel cable is it will begin to degrade the image quality after 300ft, which limits the ability to extend your security coverage area to outdoors. Lower Quality cable will result in a signall loss at shorter distances.