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GE M
S
EDICAL
YSTEMS
D
FC091194, R
IRECTION
5-3-5-5
Internal I/O and Peripheral Control
The Internal I/O board performs buffering and distribution of video and control data from various sources
to multiple destinations.
•
SVGA (R, G, B and Sync.) are fed from the BEP, directly up to the system monitor. Another set of
RGB can be fed to a color printer.
•
Composite video, black and white video and S-Video are buffered and distributed to VCR and
printers.
•
The analog Doppler signals are fed from the Spectrum Doppler board to the VCR audio inputs and
through a switch where audio from VCR playback also is input, to the BEP and then to the speakers.
•
Serial RS-232 interface signals from the BEP are fed to the destinations; VCR, Color Printer and
Modem.
•
Serial USB interface signals from the BEP are fed to the Front Panel and to EIO.
•
Remote control signals for printers are generated on the I/O board.
•
The Footswitch is connected to the I/O board.
•
An AC Power Interface controls power on/off and fan speed.
5-3-5-6
External I/O
Several signal are fed from the Internal I/O board to an External I/O board located on the rear of the
system. This board contains data buffers and a galvanic isolation section.
Different types of signals are fed to connectors accessible on the External I/O.
•
R, G, B and Sync are provided for external RGB monitors or printers.
•
Composite video, black and white video and S-VHS video are buffered and fed to output connectors
for external monitors and printers.
•
Two serial RS-232 ports are provided for external communication with e.g. the System CPU.
•
An Ethernet signal from the BEP is fed to an Ethernet connector. It is used for connectivity, including
DICOM Network.
02
EVISION
Chapter 5 - Components and Functions (Theory)
V
7 / V
7 PRO S
IVID
IVID
ERVICE
M
ANUAL
5 - 9
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