Crystal Vision
Trouble shooting
TANDEM HD-20 User Manual R1.4
48
24/05/2007
6 Trouble shooting
Simple trouble shooting can be performed by using either the card edge or a remote status panel
display.
Card edge monitoring
TANDEM HD-20’s card edge LEDs will give a quick overview of current status.
Name
Led
Colour
Function when ON
Function when Off
HD
Yellow
Video input standard is HD
(High Definition)
SD
Yellow
Video input standard is SD
(Standard Definition)
Input not present
Silent
Yellow
One or more flagged audio
channel contains silence
All channels active or masked
PSU
Green
Good power supply (PSU) rails
One or more of the monitor
supplies is out of specification
Error
Red
No video input present
nCal
Yellow
One or more audio channel gains
have been adjusted away from
unity
All gains set to unity
The board edge display may also give some useful information when trouble shooting.
Fault finding guide
The Power OK LEDs are not illuminated
Check that the frame PSU is functioning – refer to the appropriate frame manual for
detailed information
There is no video output
Check that valid SDI inputs are present and that any cabling is intact