Video Input Cards (Vic) - Hughes JVC 100 Service Manual

Chapter 2---System Description
IIC CLK
Video Processor
/ VA OK (HV
ENABLE)
Deflection Processor
H FOCUS SIG
V FOCUS SIG
Outputs
SC/RTG
/HV OK
Regulator
G1 SUPPLY
G2 SUPPLY

Video Input Cards (VIC)

There is only one optional video input card slot on the Model 100. It is located
immediately to the right of the Video Processor PCB on the right side of the
projector. There are five Optional Video Input Cards that can be used with the
Model 100 Projector.
RGBHV Wide-Band VIC used as a second input card.
!
Graphics Enhancer RGB VIC
!
Four-Input RGB MUX VIC used in a similar manner as a switcher.
!
HDTV VIC used for High Definition Television.
!
Quad Standard Decoder/ Line Doubler VIC used for NTSC, PAL
!
SECAM and other composite sources.
RGBHV Wide-Band VIC
The RGBHV Wide-Band VIC has five BNC inputs. It provides the RGB and HV
sync interface for the projector. This RGB VIC provides a high bandwidth
interface for the three color video signals. The video signals are routed to the
Backplane Board. The sync signals (horizontal and vertical) are also directly
connected to the Backplane Board.
The following functions are provided by the RGB VIC:
Video and sync interface for red, green and blue
!
LED indication
!
IIC serial bus interface
!
Model 100 Service Manual
IIC clock line. Unidirectional clock line for control of
synchronous data transfer over the IIC bus interface.
Low enables HVPS
Horizontal focus parabola.
Vertical Focus parabola.
High Voltage status line. Low = HVPS operating normal.
-75V
1kV
2-15