4 Appendix
A.1 Troubleshooting
Problems/symptoms
Possible causes or corrective actions
The camera cannot be accessed
by some clients.
If using a proxy server, try disabling the proxy setting in your
browser. Check all cabling and connectors.
The camera works locally, but
not externally.
Check if there are firewall settings that need to be adjusted.
Check if there are router settings that need to be configured.
Poor or intermittent network
connection.
If using a network switch, check that the port on that device
uses the same setting for the network connection type
(speed/duplex).
The camera cannot be accessed
via a hostname.
Check that the hostname and DNS server settings are correct.
Not possible to log in.
When HTTPS is enabled, ensure that the correct protocol
(HTTP or HTTPS) is used. When attempting to log in, you may
need to manually type in HTTP or https in the browser’s
address bar.
No image using Refresh and/or
slow updating of images.
If images are very complex, try limiting the number of clients
accessing the camera.
Images only are shown in black
and white.
Check the Video and Image setting.
Blurred images.
Refocus the camera.
Poor image quality.
Increased lighting can often improve image quality. Check that
there is sufficient lighting at the monitored location. Check all
images and lighting settings.
Rolling dark bands or flickering
in the image.
Try adjusting the Exposure Control setting under the Camera
Setup part.
H.264 not displayed in the client.
Check that the correct network interface is selected in the
Video and Image/Stream.
Multicast H.264 not displayed in
the client.
Check with your network administrator that the multicast
addresses used by the camera are valid for your network.
Check that the Enable multicast checkbox is enabled in the
System/Network/RTP tab. Checks with your network
administrator to see if there is a firewall preventing viewing.
Multicast H.264 is only accessible
by local clients.
Check if your router supports multicasting, or if the router
settings between the client and the server need to be
configured. The TTL value may need to be increased.
Color saturation is different in
H.264 and Motion JPEG.
Modify the settings for your graphics adapter. Please see the
adapter’s documentation for more information.
Video cannot be recorded.
Check that the SD card is inserted properly.
Check that the SD card is formatted properly.
77
