User`s manual

42
AXIS 210/211 - Troubleshooting
For additional assistance, please contact your reseller or see the support pages on the Axis
Website at www.axis.com/techsup
No images displayed on web page
Problem with AMC.
(Internet Explorer only)
To enable the updating of images in Microsoft Internet Explorer, set your browser to
allow ActiveX controls. Also, make sure that AXIS Media Control (AMC) component is
installed on your workstation.
Installation of additional ActiveX com-
ponent restricted or prohibited
Configure your AXIS 210/211 to use a Java applet for updating the images under
Live View Config > Layout > Default Viewer for Internet Explorer. See the online help for
more information.
Video/Image Problems
Image too dark or too light. Check the image settings. See the online help on Video and Image Settings.
Missing images in uploads. This can occur when trying to use a larger image buffer than is actually available. Try
lowering the frame rate or the upload period.
Slow image update. Configuring, e.g. pre-buffers, motion detection, high-resolution images, high frame rates,
etc, will reduce the performance of the camera.
Slow performance. Slow performance may be caused by e.g. heavy network traffic, multiple users accessing
the unit, low performance clients, use of features such as Motion Detection, Event han-
dling., Image rotation.
Image gradually gets darker or lighter. When using the AXIS 210/211 in locations lit by fluorescent lighting, check in the
advanced image settings that the Exposure control is set to Flicker-free.
Image loses focus often. When using the supplied DC-Iris lens (AXIS 211 only), this should always be set to
Enabled, in the settings for Video & Image > Advanced. To focus the camera, please see
page 15.
Poor quality snapshot images
Screen incorrectly configured on your
workstation
In Display Properties, configure your screen to show at least 65000 colors, i.e. at least
16-bit. Using only 16 or 256 colors will produce dithering artifacts in the image.
Browser freezes
Netscape 7.x or Mozilla 1.4 (or later)
can sometimes freeze on a slow com-
puter.
Lower the image resolution.
Problems uploading files
Limited space. There is only limited space available for the upload of your own files. Try deleting one or
more existing files, to free up space.
Overlay is not displayed
Total size of image and text overlay
exceeds maximum size of 640x480.
Using a text overlay affects the amount of space available to the overlay image. The text
overlay occupies proportionally more and more space the lower the resolution, i.e., 16
pixels in height at 640x480, 32 pixels at 320x240 and 64 pixels at 160x120.
Because of this, changing to a lower resolution after configuring an overlay image and a
text overlay may cause the total overlay size to exceed the maximum size of 640x480,
and no overlay will be displayed.
Motion Detection triggers unexpectedly
Changes in luminance. Motion detection is based upon changes in luminance in the image. This means that if
there are sudden changes in the lighting, motion detection may be triggered mistakenly.
Lower the sensitivity setting to avoid problems with luminance.