Crystal Vision
Problem solving
18/02/03
Page
29
Basic fault finding guide
The Power OK LEDs are not illuminated
Check that the frame PSU is powered and that the frame PSU is functioning – refer to the
appropriate frame manual for detailed information.
There is no video output
Check that valid component inputs are present and that any cabling is intact.
The video output is horizontally mistimed
Check that the selected external sync signal is valid for the source is use.
Check that Hpos horizontal delay is set correctly. The adjustment range is +/- 2uS from
reference sync input.
Note: The card-edge Hpos fine rotary control is always active and can adjust horizontal
picture position by +/- 100 ns.
Active control panel settings change unexpectedly
Statesman settings may have overridden card settings if they were accessed more recently.
Active control panel does not work as expected
Check that a unique node address is being used in the frame the module is fitted into.
Check that the card edge DIL switch is set for remote control.
Statesman settings change unexpectedly
Other control settings may have overridden card settings if they were accessed more
recently.
Statesman control is disabled
Check that DIL lever 10 is in the DOWN position.
If necessary re-boot Statesman
Carry out checks suggested in the Statesman manual.
GPI control does not work as expected
Check that a unique node address is being used in the frame the module is fitted into.
Check that the card edge is set for local control.
Check the GPI cabling.
Check jumper settings J4 to J9 on the card itself.
Chroma levels appear to be incorrect with some YUV sources
Check that the Chroma Levels setting (Normal/Betacam) is correct for the YUV source is
use (ADC104F/N only).
Chrominance/Luminance delay is incorrect with some sources
Check that the Y/C delay is set appropriately for the source in use (ADC104F/N only) and
that any input error is not greater than -111ns to 111ns.
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 re-inserting the card.
It is safe to reinsert the card whilst the rack is powered.