NOTE: This guide is for the following recorders : DVR-1590, 1600, 4575/4580/4590, 4780, 4980, NVR-7450
Enable "Record Audio"
- Access Menu then go to Record then Mainstream.
- Change the Channel to where your microphone is connected (e.g. channel 1).
- Tick the box beside Audio.
- Click on Save to save the settings.
- Repeat these steps for the other channels if necessary.
- Repeat these steps on the Substream tab.