![background image](http://html.mh-extra.com/html/northern/n3nvr-series/n3nvr-series_user-manual_1708282036.webp)
Network Video Recorder
User Manual
Basic Operations
16
Issue: V4.6.X(2022-04-24)
4
Basic Operations
4.1
Power on the Device
⚫
Ensure that the NVR is correctly connected to a power supply, and a display is
correctly connected to the high-definition multimedia interface (HDMI) or video
graphics array (VGA) port of the NVR before power-on.
⚫
In some environments, abnormal power supply may cause the failure of the NVR to
work properly and even damage the NVR in severe cases. It is recommended to use
a regulated power supply to power up the NVR in such environments.
After connecting the NVR to a power supply, the power indicator is always on. Start the NVR.
The real-time video screen is displayed as shown in Figure 4-1.