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Troubleshooting
General checks
Plasma display S-video problem (CrossPoint 450 Plus switchers only)
www.camboard.de
CAMBOARD Electronics
This section gives recommendations on what to do if you have problems operating
the CrossPoint 450 Plus or MAV Plus switcher, and it describes an actual image
problem that Extron has encountered.
1.
Ensure that all devices are plugged in and powered on. The switcher is
receiving power if one of the front panel Power Supply LEDs is lit green.
2.
Check to see if one or more outputs are muted.
3.
Ensure an active input is selected for output on the switcher.
4.
Ensure that the proper signal format is supplied.
5.
Check the cabling and make corrections as necessary.
6.
Call the Extron S
3
Sales & Technical Support Hotline if necessary.
Extron has encountered a problem when a CrossPoint 450 Plus switcher routes
S-video that is output by some video conference codecs. Some codecs change the
DC offset on the chrominance (C) so that it is very different from the level on the
luminance (Y). This can cause a plasma display to come up in the wrong size
mode.
With the matrix switcher taken out of the system, the plasma works fine. It looks
like a problem with the matrix switcher, but it is not. The matrix switcher boosts
the bad codec output, which makes the plasma go to the wrong setting.
Solution: Try placing an Extron video DC block adapter, part #26-495-01, on the
luminance (Y) input to the switcher from the codec.
Tel. 07131 911201
CrossPoint 450 Plus and MAV Plus Switchers • Operation
Fax 07131 911203
ce-info@camboard.de
3-53
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