User Manual

Table Of Contents
94
Problem
Possible Cause and Solution
If not, maybe it is because the graphics
card driver on your computer is not
working properly. Try installing the driver
again.
A camera is offline, and
No Link
is displayed.
Click Maintain > System Info > Camera. The
cause is displayed under Status. Common causes
include disconnected network, incorrect
username or password, weak password,
insufficient bandwidth.
Check network connection and network
configurations.
If it indicates incorrect username or
password, check that the camera password
set in the NVR is the one used to access the
camera's Web interface.
If it indicates denied access for weak
password, log in to the camera's Web
interface and set a strong password.
If it indicates insufficient bandwidth, delete
other online IP devices in the NVR.
The NVR displays live
video for some cameras
and No Resource for
others.
Set the camera to encode the sub stream,
and decrease its resolution to D1.
Set the NVR to use the sub stream first for
live view.
A camera goes online
and offline repeatedly.
Check if network connection is stable.
Upgrade the firmware for the camera and
the NVR. Contact your dealer for the latest
versions.
Live view is normal, but
the recording cannot be
found.
Check that a recording schedule has been
properly configured.
Check if the time and time zone configured
in the NVR are correct.
Check if the hard disk storing the recording
has been damaged.