Barco iD H250, Руководство по обслуживанию

Страница: 48 / 108

5. Electronic spares and servicing procedures
5.5.1 Description of the PMP
Description
• The PMP receives the input signals in two ways:
- the input connectors on the PMP board: DVI connector
- the separate input layers via the backplane: 10 bits for video image, 48 bits for data image
• In the scaler, several signals can be mixed with the server signal before being sent to both the formatter and the DVI output.
• The preprocessor handles the incoming and outgoing DVI signals.
• The PMP also contains a processor and a HDTV deinterlacer.
• The RS232 serial port is connected to the processor.
• The OSD FPGA is situated behind the scaler.
• Digital data is converted to LVDS before it is sent to the formatter.
Schematic overview
data
data
video
layer 1: DVI
DDR
DVI out
RS232
DDR
OSD
formatter
Flash CPLD Ethernet
DDR
Field memory
HDTV deinterlacer
DDR
Boot
OSD
backplane
data
Pixel Map Processor
preprocessor
graphics
port
video
port
scaler
processor &
HDTV deinterlacer
Image 5-31
PMP: schematic overview
44 R59770097 ID H250 / H500 15/05/2007