40 | Troubleshooting | AXIS 250S User’s Manual |
Symptoms | Possible causes | Remedial actions |
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Slow video | Outdated drivers for graphics | Obtain and install the latest device driver for your graphics card from | ||||||||||||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 | ||||||||||||
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| is enabled. This can be done by running the program DxDiag.exe (click | ||||||||||||
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| Start - Run and then type dxdiag.exe) Check on the Display tab that | ||||||||||||
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| DirectDraw acceleration is enabled. |
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| Another application is using | Close the other application, and then | ||||||||||||
| 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. |
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| Insufficient free memory on | Lower the resolution/color depth for the monitor. | ||||||||||||
| graphics card for using the | desktop and select Properties - Settings. |
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| hardware acceleration |
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| capabilities. |
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Poor quality video (image | Outdated drivers for graphics | See Slow video above. |
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hopping, etc.), wrong | card. |
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image format (b/w, |
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inverted, etc.) | Incorrect line termination. | If the AXIS 250S is connected in parallel with other equipment, disable | ||||||||||||
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| the input termination by setting video termination switch to OFF. | ||||||||||||
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| Inversely, when not using other equipment, set the Termination | ||||||||||||
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The AXIS | 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. |
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install. | there is an older version stored |
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| in Internet Explorer’s cache. |
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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. |
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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: |
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| Command | Command |
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| Command |
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| T1 |
| T2 | T3 |
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| Time | ||||||||
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| Trigger |
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| This feature has particular significance when using commands that | ||||||||||||
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| take a relatively long time to process, e.g. mail or FTP, especially if they | ||||||||||||
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| are transmitting a pre/post alarm buffer. |
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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/
