Multichannel Video Recorders: NVR vs DVR and Installation

Multichannel video recorders are commonly used in surveillance camera systems to record and capture video. All video capture by your home or business’s security cameras is routed to the multichannel recorder, and the recorder in turn stores the video so that you can re-watch it later. Depending on the type of cameras that you use, you will likely use an NVR (network video recorder) or DVR (digital video recorder) multichannel recording system.

Deelat NVR
Deelat NVR

So what are multichannel recorders and how do they work? Multichannel refers to the number of inputs – or the number of cameras – that a NVR or DVR can handle. If you use 4 home security cameras, for example, you would require at least a 4-channel NVR or DVR. Today, multichannel recorders can accommodate a growing number of cameras, with high-end models having 64 channels or more.

Here’s how multichannel recorders work: NVR systems work with IP security cameras. The data that is captured on the camera is then sent wirelessly to the NVR, where it is captured. DVRs are used with analog systems. The cameras must be attached via a VGA cable to the DVR. Once the video is sent to the NVR or DVR, it is typically stored on a hard disk, USB thumb drive, or on network storage.

NVR vs DVR: Advantages, Differences and Specifications

The biggest difference between NVR and DVR recorders is the process in which they capture and record video. NVRs are compatible with IP or TCP cameras, which are cameras that can connect to the Internet. In these systems, the video is decoded at the camera and then sent wirelessly to the NVR. With DVRs, the video signal is sent directly to the DVR where the analog video is converted to digital. DVRs require that the camera to be linked directly to the DVR hard drive via a video cable.

Deelat NVR - Inputs
Deelat NVR – Inputs
  • Remote Viewing: Both NVR and DVR accommodate online viewing, meaning the video from the camera can be watched remotely.
  • Compatibility: NVR systems are only compatible with IP cameras. DVR systems, on the other hand, are compatible with a wider range of cameras. A tip: Be sure the cameras you purchase are compatible with your NVR or DVR system.
  • Video Quality: With NVR systems, the video is compressed at the camera and then sent wirelessly. Because of this, IP cameras perform better and deliver more resolute pictures. Full HD is possible with NVR systems.
  • Camera Placement: NVR systems are more flexible for camera placement, as the only requirement is that the camera is on the LAN network. With DVR systems, cameras must be placed closer to the DVR – typically about 1,000 feet or less.
  • Consistency: Networked IP cameras do take up bandwidth, and they are connected to the Internet. So they are affected by Internet outages or overuse of the bandwidth. Conversely, DVR systems will always capture video, and they’re often capable of running on batteries in the event of a power outage. Thus, their recordings are more guaranteed.

Multichannel Recorders: Installation Tips

In general, DVR and NVR systems have detailed instructions for installation. The good news: They can be set-up by anyone. You don’t need advanced knowledge of technology to set up your systems, although NVR connections are a bit more of a challenge to set-up. Typical set-up includes:

Each system is different, yet typically the process begins with installing the NVR or DVR unit. Some IP cameras must be connected to a POE, or Power over Ethernet, switch. This provides power to the camera.

In an NVR system, each camera is connected via an Ethernet cable to the POE switch, which is connected to a wireless router. The router then connects to the NVR system, so the data from the cables can be captured. In a DVR system, each camera is connected directly to the DVR system via a wired connection.

Deelat.com is your source for low-cost DVR and NVR multichannel video recorders. We carry a range of video recorders with up to 64 channels. View our selection today, start shopping and save!

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