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There are two types of NVRs: Standalone NVRs and PC-based NVRs. The Standalone NVRs are mostly built on Linux OS (Operating System) based system designed for embedded processors, while the PC-based NVRs are mainly MS Windows OS based system designed for PC platforms with dedicated boards for video surveillance.
* Benefits of a Standalone NVR
- Usually less expensive
- Takes less physical space (easy to hide on safe place)
- Safer from malwares and viruses
- Quiet in operation
- Lower power consumption
* Benefits of a PC-based NVR
- Gives better features such as video analysis, high-quality user interface, etc.
- Ability to have thousands of user accounts
- More expandable hardware and software components
- Easily maintain, change or upgrade hardware and software components
A Network Video Recorder (NVR) is a internet protocol (IP) based video surveillance system or software that is designed to record and playback the video from IP cameras. Unlike DVRs (Digital Video Recorder), typically NVRs do not have video compression engines on board for the video is digitized, processed and compressed by its IP cameras, and then transmitted to the NVRs over IP network. But, the NVRs should decode both live video stream and playback video stream.
Usually, the NVRs support multi-channel video display, flexible recording schedule with different video profile with playback capability, a user friendly GUI, intelligent event detection and notification, remote monitoring and control, and PTZ camera control, etc.
SMART(Self Monitoring Analysis and Reporting Technology) is a feature provided by HDD. It monitors possible conditions that the HDD has been exposed to, or status for HDD errors.
Your DVR can be configured to set the SMART information check schedule and condition. It can send alarm out or notification on SMART error.
If you can’t see any images on a monitor, please check the following points.
- Check the monitor is turned on and video input cable is connected to the NVR correctly. Also, check whether the monitor cable has no defect.
- Check the display mode of monitor is set to the input source (HDMI or VGA) correctly.
- Restart NVR and check the video is displayed on the monitor within 3 minutes. If NVR is restarted, the video resolution is adjusted automatically though video resolution between NVR and monitor is not same.
- If you have another monitor, replace the monitor and restart NVR. If the video is still not displayed on another monitor properly, please report the problem to our customer support person.
Normally, NVRs or network switching hubs are PSEs (Power Sourcing Equipments) and have no consideration about the PoE and DC power because they generates the PoE power using DC power and have no collision between PoE and DC power.
For NVRs, you should press the factory reset button at the NVR’s rear panel and turn the NVR on. When the NVR successfully resets to factory default settings, the internal buzzer of NVR will sound three times periodically. If the internal buzzer doesn’t sound within 3 minutes, please turn the NVR off and execute the above operation again.
For Cameras, if you press the factory reset button, the camera gets automatically rebooted and initialized to factory default settings. Box type cameras can press the the factory reset button without opening case. But, dome type or outdoor cameras should open the case and press the factory reset button. Instead of pressing the factory reset button, you can reset the cameras to the factory default setting using our INIT (Integrated Network Installation Tool) software.