Crystal Vision
Trouble shooting
DEC105S User Manual R1.1
38
15/12/04
There is no video output
Check that a valid input is present (Lock LED ON) and that any cabling is intact.
The card no longer responds to Statesman/front panel control
Check that the card is seated correctly and that the Power OK LED is lit.
Check that the card edge Rx and Tx LEDS flash (Comms LED in an Indigo frame) when
Statesman communication control is attempted.
Check any active control panel/Statesman cabling.
Check if the control panel/Statesman can control another card in the same rack.
If necessary re-set the card.
The video output is not synchronous with other sources
Check that a valid synchronous reference is connected, that the Sync LED is lit and that the
correct video standard is selected.
Check that output phasing is set correctly.
The video output is disturbed when the horizontal delay is adjusted
If the chroma burst is absent for more than a second during adjustment, the input video
timing logic automatically may reset itself a number of times. Because of this there will be a
periodic disturbance of the output for several seconds, if the input timing is set so far out
that the burst is not detected.
Statesman settings change unexpectedly
Active control panel or card edge control settings may have overridden Statesman settings if
they were changed more recently.
Card edge settings have changed unexpectedly
Statesman or active control panel settings may have overridden card edge control settings if
they were changed more recently.
Active control panel settings change unexpectedly
Statesman or card edge control settings may have overridden control panel settings if they
were changed more recently.
Active control panel and/or Statesman does not work as expected
Check that a unique node address is being used in the frame the module is fitted into.
Module powers up with invalid video
Check that the SEL switch has not been left in position 9 (factory default recall).
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 then re-inserting the card.
It is usually safe to reinsert the card whilst the rack is powered.
It is also possible to recall factory defaults by following the procedure at the end of the Card
edge operation chapter.
