GE Brivo OEC 715, Руководство по обслуживанию

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Brivo OEC 715/785/865/865 Mobile C-Arm X-Ray Product Service Manual
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System Interface Board
The system interface board is mounted in the workstation and will provide the interface between user and
system. It is responsible for 8 functions.
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Detect OR door open/close status and send it to WKS
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Provide power switch of the Xray on indicator on OR room
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Provide power switch of the Room In Use indicator on OR room
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Provide power switch of the injector
- Detect wireless switch short/open status and send it to WKS computer
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Communicate with WKS computer through RS232 port
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Extend Ethernet port from WKS computer to user interface.
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Command translator between computer and PDU
The power of SIB board come from co5V and +12V. Fuse for +5V/3.15A F1 and +12V/1A F2 are used
to protect computer ATX power
Internal power to drive chips are divided from +5V, three vo3.3V, +2.5V and +1.2V are generated.
The signals come from and send to user interface are isolated with DC or AC relays K2~K5, the board can also
detect status of wireless switch J8 and control power of wireless router by MOSFET. All signals connect to FPGA
are drove with transceiver to improve the capability of current.
An Ethernet isolation is provided to user interface by SIB board, the connector J1 and J2 on SIB board can
provide 1500Vrms isolation each, with an internal Ethernet port inside computer, totally a 4000Vrms isolation on
Ethernet path.
An Altera CycloneIII FPGA U10 is used as main controller on this board, it communicates with computer and
control peripheral equipment according to command from computer and user.
TVS array U1~U5 are used to absorb surge from PDU.
The structure of SIB is shown as follows.