Crystal Vision
Trouble shooting
TANDEM HD-20 User Manual R1.4
49
24/05/2007
There are no audio outputs
Check for audio signals using headphones connected to the front PCB mini jack
Check that functioning analogue or digital audio output cards are fitted securely
Check that any audio cabling is intact
The digital audio output produces clicks and pops in downstream equipment
Check that the embedded audio is synchronous with the same source as the video content of
the serial digital signals
Check that the downstream equipment is properly referenced to the system audio reference
The digital audio is not timed with the video (lip sync error)
TANDEM HD-20 can make some adjustment to the timing of the audio to the incoming
video. See audio delay for details
Audio has been selected for embedding but fails to be inserted
Check that there is sufficient valid HANC space for the insertion to take place
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 card from the rack and re-
inserting. It is safe to re-insert the card whilst the rack is powered.
Default settings may be re-loaded into the card if required – see Factory Reset.
