User`s manual

46
AXIS 210/211/211A - Troubleshooting
For additional assistance, please contact your reseller or see the support pages on the Axis
Website at www.axis.com/techsup
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.
No audio
Incorrect setup. Check that the sound card in the PC and the connections to the speaker and microphone
are working. Ensure that the mute button is not pressed and the volume settings are cor-
rect. Ensure that full-duplex is selected if you want to have two way audio communica-
tion.
Post Content Length in proxy server. The Post Content Length set in the proxy server is too low. Set the value of the Post Con-
tent Length in your proxy server to 1MB or more. You may need to contact your system
administrator to do this.
Full duplex not supported. Sound card does not support full-duplex. For information on how to check if your sound
card supports full-duplex, please visit http://support.microsoft.com
Firewall or router settings. AXIS 211A works locally, but not externally. Check the Internet firewall settings with your
system administrator or reconfigure the default router settings.
DC power not enabled for microphone. If the microphone has a built-in amplifier then the DC power must be enabled on the
Audio Settings page.
Audio volume too low/high
Volume settings incorrect. The volume of the microphone or speaker connected to the AXIS 211A is either too high
or too low. Change the volume settings for the speaker or microphone in the Live View
page.
Input and output gain set incorrectly. Change the input gain for the microphone and the output gain for the speaker to adjust
the audio levels on the Audio Settings page.
Poor audio quality
Too many users. Too many users/clients connected to the AXIS 211A may adversely affect the sound qual-
ity. Try limiting the number of clients allowed to connect on the Audio Settings page.
User too close to microphone. Enable the speech filter in Audio > Advanced Settings.
Feedback from speaker. Enable the echo cancellation filter in Audio > Advanced Settings.
Background noise. Adjust the noise cancellation threshold and attenuation to reduce background noise lev-
elsin Audio > Advanced Settings.
CPU overloaded. Reduce the number of listeners and viewers and decrease the image resolution and com-
pression.