Night Owl CM-IH8-BA User Manual page 84

Error
There is no picture on selected
channels/camera picture is not
being displayed.
The image on the NVR appears,
but does not have sound.
A "whirring" noise is coming
from the system.
The system beeps at startup.
Possible Causes
Camera cables are loose of have
become disconnected.
Audio cables are loose or have
been disconnected.
Audio channels are disable.
Volume on external speakers
(not included) is low or off.
Fan is active.
84
Solutions
1. Check the camera video cable
and connections.
2. Disconnect and reconnect the
cable at the system and at the
camera.
3. Try moving the camera to another
channel or use another cable.
Check the AUDIO connection to
the NVR.
Left click in Live View to bring up
the Volume control and ensure that
the channel(s) are not low or muted.
Increase volume on external
speakers (not included).
The noise means the exhaust fan
is working normally.
The beep at startup is normal.