VTEL HS 2000, Руководство системного администратора

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Chapter 5. Troubleshooting HS 2000 System Administrator’s Handbook
104 Video problems
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If the remote operator sees video from the camera on their local
monitor, ask them to restart the system and try again, with a different
camera. If it still doesn’t work, report the problem to a certified
service representative.
■
If they do not see a picture from the camera on their monitor, the
problem may be with their camera, camera cable, or power to the
camera from the system.
■
If this message appears when the remote site is using the document
camera:
No Remote Video Input
Check to be sure that the input selected on the document stand camera
control panel is EV-308 (in Europe: EV-408). Also check to be sure
the Positive/Negative image switch is in the P position.
Remote video quality is poor (but local video is good)
These are possible causes for this problem:
■
Inadequate lighting at the remote site.
■
Dark backgrounds at the remote site.
■
Excessive movement at the remote site.
■
Very low line rates.
■
Functions that require a lot of communications network bandwidth
are being performed.