Hi Tron Systems Inc NDT72 Manual Do Utilizador

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4. Appendix 
 
4.1 Troubleshooting 
 
Troubleshooting if problems occur, verify the installation of the Network Camera with the instructions 
in this manual and with other operating equipment. Isolate the problem to the specific piece of 
equipment in the system and refer to the equipment manual for further information. 
 
 
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 host name. 
Check that the host name 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 shown in black & 
white. 
Check the Video & 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 
image and lighting settings. 
Rolling dark bands or flickering 
in image. 
Try adjusting the Exposure Control setting under AE and AWB 
part. 
H.264 not displayed in the 
client. 
Check that the correct network interface is selected in the Video 
& 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 are enabled in the 
System/Network/RTP tab. Checks with your network 
administrator to see if there is a firewall preventing viewing. 
Multicast H.264 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.