Crystal Vision
Trouble shooting
DEC104S User Manual R1.0
36
29/10/04
6 Trouble shooting
Card edge monitoring
Once the start-up initialisation procedure is complete, the DEC104S can be controlled or
configured from the card edge, from an active control panel or the Statesman PC
interface. This chapter will concentrate on the card edge monitoring LEDs.
Status LEDs
Board edge LEDs provide status reporting and may be useful when fault finding.
DEC104S front view showing controls and LEDs
The following table summarises the card edge LED functions and colours:
LED
Colour
Position
Description
Green
Conf
Illuminates when board power-on configuration is complete
Green
Sync
Illuminates when analogue timing reference is absent. The board output will be
timed relative to the composite or Y input in 10 bit mode and a free running clock
in 8 bit mode.
Yellow
625
Illuminates when board is in 625 line mode
Green
+5V
Illuminates when the board is powered
Green
Lock
Illuminates when the composite or Y input is present
Yellow
10 bit
Illuminates when the board is 10 bit mode
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 a valid input is present (Lock LED ON) and that any cabling is intact
5 6
manmode
manstd
mode
std
comp
vbi
DEC104S
ADJUST
SELECT
conf
+5v
sync
lock
625
10 bit
