Crystal Vision DDAA132, Руководство пользователя

Страница: 9 / 19

Crystal Vision
Hardware installation
13/01/05 8 DDAA132 User Manual R7.2
2.2 General Purpose Interface
The external GPI control lines 'a' to 'f' at the frame remote connectors may be used to
control the DDAA132 remotely with (say) remote switches emulating some of the front
panel switches. The GPI lines are normally pulled up on-board to +5V via 10k
Ω
and will
withstand up to +35V.
GPI connections
Open Connect to ground
‘a’
No setup Adds 7.5 IRE of setup to Y & reduces Y
gain as required. Only affects 525 line
output.
‘b’
625 line if manual standard selected on
jumper PL8 525 line if manual standard selected on
jumper PL8
‘c’
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.
‘d’
See table below See table below
‘e’ See table below See table below
‘f’
See table below See table below
GPI test pattern select
Composite output
‘d’ ‘e’ ‘f’
SDI input Open Open Open
SDI input Open Open Closed
SDI input Open Closed Open
SDI input Open Closed Closed
Closed Open Open
Closed Open Closed
Luma/chroma ramp Closed Closed Open
Closed Closed Closed