Axis Communications 250S user manual Repeatedly attempts to Attempting to install, but

40 Troubleshooting AXIS 250S User’s Manual

Symptoms	Possible causes	Remedial actions
Slow video	Outdated drivers for graphics	Obtain and install the latest device driver for your graphics card from
	card.	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.
	Another application is using	Close the other application, and then re-open the AXIS 250S’s Live
	DirectDraw acceleration,	View page. Examples of other applications that use DirectDraw
	making this unavailable to the	acceleration are: video conferencing software, Web TV, video playback
	AXIS 250S.	software and video editing software.
	Insufficient free memory on	Lower the resolution/color depth for the monitor. Right-click on the
	graphics card for using the	desktop and select Properties - Settings.
	hardware acceleration
	capabilities.
Poor quality video (image	Outdated drivers for graphics	See Slow video above.
hopping, etc.), wrong	card.
image format (b/w,
inverted, etc.)	Incorrect line termination.	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).
The AXIS MPEG-2 Viewer	A new version of the viewer is	Empty the cache in Internet Explorer, by selecting Tools - Internet
repeatedly attempts to	attempting to install, but	Options - Delete files.
install.	there is an older version stored
	in Internet Explorer’s cache.
Poor quality audio	Outdated drivers for sound	Ensure that you are using the latest device driver for your sound card.
	card.	Check the manufacturer’s web site for new drivers.
Triggering difficulties	Unable to trigger on both	Repetitive trigger conditions that occur in quick succession can be
with programming scripts.	positive and negative	missed. This is because the command initiated by the first trigger event
	transitions of the Control	may not have been fully executed before the second event starts. This
	Button and/or I/O ports	scenario is demonstrated in the illustration below:
	(double-edged triggering).		Command			Command
		Command		?
			T1		T2	T3
							Time
		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.

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/