Crystal Vision
Card edge operation
13/01/05
14
DDAA132 User Manual R7.2
3 Card edge operation
The front edge of the DDAA132 card provides power rail monitoring, signal status, gain
adjustment and configuration switches.
DDAA132 front edge view
The 8-way front edge switch provides access to the following:
•
Test – composite output is test pattern or SDI input
•
525 – force standard if board is NOT in AUTO
•
VBI – blank or unblank VBI data
•
SET – apply 7.5 IRE in NTSC
•
CBW – change chroma bandwidth
Lever
Up
Down
1
TEST
Composite output is incoming SDI data
Composite output is modulated ramp test pattern
2
525
625 line if jumper PL8 in manual position
525 line if jumper PL8 in manual position
3
VBI
Blank PAL lines 7 to 22 & 320 to 335, NTSC
lines 10 to 20 & 273 to 282
Unblank PAL lines 7 to 22 & 320 to 335, NTSC
lines 10 to 20 & 273 to 282
4
SET
No setup
Adds 7.5 IRE of setup to Y & reduces Y gain as
required. Only affects 525 line output
5
CBW
Chroma bandwidth 1.3MHz
Chroma bandwidth 650kHz
LED indicator assignments
LED
Colour
Meaning when lit
INPUT
Green (bottom)
Valid serial digital input detected
ERROR
Red (top)
Serial digital input lock error
625
Yellow (top)
625 line output
525
Yellow (bottom)
525 line output
PSU
Green (top)
Power supply voltage present
