Arena Service Manual
5.9.1 Functional
• Power. This section provides power to the Peripheral Interface
Board and its peripherals.
• Parallel Port. The Peripheral Interface Board is directly
connected to the SBC’s parallel port. The parallel port
controlled section comprises three functions: Status Lamp,
Sodium Button, Patient Data Card Reader. The status lamp
and Sodium Button peripherals are physically connected to the
Rear Passive Interconnect Panel while the Patient Data Card
Reader is physically connected to the Peripheral Interface
Board.
• Serial Ports. The Peripheral Interface Board is directly
connected to the touch screen board (4-Comm Board), which is
controlled by the SBC. The serial ports section comprises two
functions: serial port communications to the Non-Invasive
Blood Pressure Monitor and isolated serial port
communications to an external device.
5.9.2 Electrical
• System. Includes the parallel port controlled section, one of
the Serial Ports, one half of the second serial port, the
unregulated +24 VDC (+29.5 VDC +/- 3V DC), +12V DC, -12
VDC, and the +5 VDC power supplies of the power section.
• Isolated. Includes the remaining part of the second serial port,
the 20 VAC and the isolated +5 VDC.
The rear panel passive interconnect board provides interface
through the rear panel to the status lamp and Sodium Button of the
system section.
The rear panel (metal plate) holds the rear panel interconnect
board, the isolated serial port connector and the ethernet connector.
The interconnect diagram in Figure 5-1 includes the Peripheral
Interface Boards. Table 5-11 lists the LEDs and fuses associated
with the Peripheral Interface Boards. The fuses used in this board
are surface mounted, as shown in Figure 5-19. Additional fuses
are listed in Section 5.10.
5-44 157-1278-912 Rev A
November 2003
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