Hughes JVC 200, Service Manual

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Chapter 2---System Description
HOR Composite horizontal / vertical sync signal
System controller board
INPUTS DESCRIPTION
IIC_CLK IIC clock line. Unidirectional clock line for control of synchronous
data transfer over the IIC bus interface.
IIC_DATA IIC data line. Bidirectional serial line for synchronous data transfer
between system control board and the YPbPr_VIC.
OUTPUTS DESCRIPTION
/IIC_INT IIC interrupt line. YPbPr_VIC does not initiate any interrupt
Low Voltage Power Supply
INPUTS DESCRIPTION
+5.1 V +5.1 V supply for use by YPbPr_VIC.
+15 V + 15 V supply for use by YPbPr_VIC.
-15 V -15 V supply for use by YPbPr_VIC.
Interlocks and protection
Inputs:
None
Outputs:
None
Quad Standard Decoder VIC
The Quad Standard Decoder VIC is composite and S-Video
interface. It contains three BNC input connectors for Composite
Video and S-Video (luminance and chrominance). This decoder
VIC converts these color component signals to RGBHV type video
signals.
The following functions are provided by the Quad Standard
Decoder VIC:
•
Select input source-Composite or S-video
•
Select standard-AUTO/NTSC/PAL/SECAM/4.43NTSC
•
Conversion of composite and S-video signals to RGB video
signals
•
Separation of syncs from the input signal
2-20 Model 200 Service Manual