5. Electronics
Sodium Button Driver
Status Lamp Driver
Peripheral Interface Board
Isolated 20VAC
Isolated
RS232
Driver
-12V
+12V
Sodium Button
Status Lamp
Isolated
RS232
EMI
Barrier
Serial Port
4 Port Serial Board
Patient Data Card
Reader Interface
PDC
Reader
Single Board Computer
Parallel Port
Rear Panel Interconnect Board
NIBP
Spare
Ethernet
EMI
Barrier
Ethernet
+5V
Unreg
+24V
Figure 5-27. Peripheral Interface Boards Block Diagram
The Rear Passive Interconnect Panel provides physical connection
for the peripheral devices:
• 3-Light Status Lamp
• Sodium Button Pendant
Two additional connectors are located on the Rear Passive
Interconnect Panel:
• Isolated serial port RS-232
• Ethernet port RJ-45
Additional peripheral devices not linked to the Rear Passive
Interconnect Panel are:
• Patient Data Card Reader
• Non-Invasive Blood Pressure Monitor
The Peripheral Interface Board can be analyzed from two different
points of view: Functional and Electrical.
157-1278-912 Rev A 5-43
November 2003
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