Table of Contents
Advertisement
Troubleshooting
42
Symptoms
Slow video
Poor quality video (image
hopping, etc.), wrong
image format (b/w,
inverted, etc.)
The AXIS MPEG-2 Viewer
repeatedly attempts to
install.
Poor quality audio
Triggering difficulties
with programming scripts.
Note:
If you still have a problem after reading this information, please contact your reseller or visit the
Axis Support Web at www.axis.com/techsup/
Possible causes
Outdated drivers for graphics
card.
Another application is using
DirectDraw acceleration,
making this unavailable to the
AXIS 250S.
Insufficient free memory on
graphics card for using the
hardware acceleration
capabilities.
Outdated drivers for graphics
card.
Incorrect line termination.
A new version of the viewer is
attempting to install, but
there is an older version stored
in Internet Explorer's cache.
Outdated drivers for sound
card.
Unable to trigger on both
positive and negative
transitions of the Control
Button and/or I/O ports
(double-edged triggering).
AXIS 250S User's Manual
Remedial actions
Obtain and install the latest device driver for your graphics card from
the manufacturer's web site. Also check that DirectDraw acceleration
is enabled. This can be done by running the program DxDiag.exe (click
Start - Run and then type dxdiag.exe) Check on the Display tab that
DirectDraw acceleration is enabled.
Close the other application, and then re-open the AXIS 250S's Live
View page. Examples of other applications that use DirectDraw
acceleration are: video conferencing software, Web TV, video playback
software and video editing software.
Lower the resolution/color depth for the monitor. Right-click on the
desktop and select Properties - Settings.
See Slow video above.
If the AXIS 250S is connected in parallel with other equipment, disable
the input termination by setting video termination switch to OFF.
Inversely, when not using other equipment, set the Termination
dip-switch to ON (default setting).
Empty the cache in Internet Explorer, by selecting Tools - Internet
Options - Delete files.
Ensure that you are using the latest device driver for your sound card.
Check the manufacturer's web site for new drivers.
Repetitive trigger conditions that occur in quick succession can be
missed. This is because the command initiated by the first trigger event
may not have been fully executed before the second event starts. This
scenario is demonstrated in the illustration below:
Command
Command
T1
Trigger
This feature has particular significance when using commands that
take a relatively long time to process, e.g. mail or FTP, especially if they
are transmitting a pre/post alarm buffer.
Command
?
T2
T3
Time
Advertisement
Table of Contents
