Crystal Vision
Problem solving
DDAA132P User Manual R7.2
16
24/02/05
4 Problem solving
The front edge of the card provides useful power rail monitoring in addition to card-edge
controls and status LEDs.
DDAA132P front edge view
LED indicator assignments
LED
Colour
Meaning when lit
INPUT
Green (bottom)
Valid serial digital input detected
ERROR
Red (top)
Serial digital input lock error
625
Yellow (top)
625 line output
525
Yellow (bottom)
525 line output
PSU
Green (top)
Power supply voltage present
Basic fault finding guide
The PSU LED is not illuminated
Check that the frame PSU is functioning – refer to the appropriate frame manual for detailed
information
Check that the card is seated correctly in the frame
There is no video output
Check that a valid video input is present and that any cabling is intact
Try using the built-in modulated ramp test signal to check output cabling and monitoring
The video output is low quality
Check that the maximum cable length has not been exceeded
Check the card-edge chroma bandwidth setting
I can only see a modulated ramp signal, where's the input video?
Check that the channel's TEST switch is in the UP position to view the input video
The card no longer responds to card edge control
Check that the card is seated correctly and that the PSU LED is lit
If necessary re-set the card
Re-setting the card
If required, the card may be reset by simply removing the rack power and re-applying power after a
few seconds or by removing the card from the rack and then re-inserting the card
It is safe to re-insert the card whilst the rack is powered