Unless you are tech savvy, understanding surveillance cameras are going to be tricky for a start. You are going to hear abbreviations such as DVR and NPR threw around everywhere. When shopping for a surveillance system, you will be asked to choose between NPR and DVR. For a clueless person, you will have more questions before you answer the simple question of which is your preference. In this article, we will guide you through understanding the very basic abbreviations that you should understand in surveillance and that are DVR
DVR stands for the digital video recorder. It is a computer in a surveillance system, which saved the surveillance videos into a hard drive. Security cameras mostly capture images in analog. The DVR is thus tasked with receiving the analog images and converting them into a digital form. The DVR will then further compress it for storage into the hard drive. Many cameras are usually connected to a DVR in a surveillance system. Most would be included in a system that has 4 to 32 cameras. The DVR in such cases will enable you to see all the images in your preferred view. You may view them either one at a time or all at once. All these videos are saved into a hard drive where they can be retrieved for later use.
How to install
In any surveillance system, installing the DVR is one of the simplest tasks that any person can do. All you need to do is plug the cameras at the back of your unit. In pc-based systems, you will need to plug in power, the monitor, and keyboard, and mouse the same way it is done on regular computers. Often there would be instructions on how to install the DVR in the product shipment.
A standard DVR comes with a hard drive of 120-gig space unless the more indicates less space. The DVR will also come with a software of setting up and viewing. There would be a power cord and additional documentation for the DVR. In a PC based machine, the DVR would come with a mouse keyboard and the owner will need to add a monitor cable and of course the cameras to make a complete security system. In an embedded machine, security monitor or even a TV set can be used together with the DVR. In a PC based machine, a computer monitor can as well serve the purpose of the DVR monitor. In the case of any technicalities, you can contact Qsee Company for technical support without any additional costs.
The pros and cons of DVR systems
Since you will most probably need to choose between DVR and the other system, which is NPR, it vital to understand the pros and cost associated with using DVR systems.
You must understand that DVR is used in analog systems mostly known as CCTV cameras. A very attractive feature with analog cameras is that they are cheap. The lower price might seem like a competitive advantage but obvious the DVR systems have their good and bad side.
The cost saving aspect of DVR systems is not due to the DVR itself but the type of cameras used in the systems. Analog cameras are cheap no doubt. Even though one has the option of mixing cameras in a security system, a DVR system offers limited flexibility in choosing cameras since it mostly works with analog cameras. However, another advantage in working with analog cameras is that the camera and processes involved in surveillance are less complex compared to any other system.
Another aspect of DVR is the coaxial cable. Although the code should not be an issue, the fact that it does not supply power may be issued. Patently the DVR system will need two cables one which will be the coaxial code and the other which will supply power. The power code will necessitate for the DVR to be placed near a power outlet. Additionally, the coaxial cables are rigid and come in sizes that make installation challenging. In addition, for those who may need audio recording, the bad news is that most standard coaxial cables do not allow for audio recording. However, thanks to technology, you may find DVR cables that allow for audio recording in videos. Another disadvantage is that when the coaxial cable is too long usually from 90 meters the quality of the videos will start going down.
A DVR being dependent on analog cameras, always necessitated for every camera to be connected to the DVR this means that there would be so many cables. In NVR, the cameras only need to be connected to the same network in the surveillance systems. As it has already been mentioned the videos in DVR depend on various qualities include the length of the coaxial cables. Other than that, the quality of the images is also dependent on analog signals, which means that the quality of the videos will be low compared to the NPR systems.
It is also important to note that most of these attributes are related to standard DVR systems. The advancement in technology has led to the development of advanced DVR systems with features such as HD resolution recording, motion detection recording, email alters and the ability to customized the system using IP cameras. The analog DVR systems may only support one video format and hence limiting the user. However, their Hybrid systems with IP cameras which may support more video formats. A user has to know the video formats that their DVR system supports so that they can know which cameras to add on the DVR camera system.
At Qsee, there are wide varieties of security cameras that are compatible with DVR systems. The cameras are not only cheap but also easy to install and have high-quality videos. However, if you have doubts and need to ask more questions, then the team of professionals will be happy to be of assistance. For the most pressing DVR questions, you can start by emailing the QSEE support here. They will help.