Crystal Vision
Problem solving
The digital audio output produces clicks and pops in downstream equipment
Check that an appropriate external reference synchronous with the system audio clock is
connected.
Check that the downstream equipment is properly referenced to the system audio reference.
AES output relative timing is incorrect
Check the Set Phase timing adjustment available under Options on a remote or front panel
LCD control or the AES o/p phase control in Statesman. Note that this control will be
disabled if no valid external reference is used.
Audio phase is incorrect
Check digital audio phase inversion is not selected
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 Comms LED in an Indigo frame flashes 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
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
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
usually safe to reinsert the card whilst the rack is powered.
ADCA412 User Manual R2.1
38
30 October 2018
