GE Datex-Ohmeda S/5 Series - 2 Display Unit Functional Description; CPU Section

Datex-Ohmeda S/5 Compact Anesthesia and Compact Critical Care Monitors
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Document no. M1144956-003
2 Display Unit functional description
The Compact Monitor Display Unit includes the following parts:
• Central Processing Board (CPB): includes Display Controller, UPI, CPU and optionally
Network and MemCard functions
• Color LCD display and its backlight inverter
• Connector board
• Command board
• Display Unit DC/DC power supply
• Fan and loudspeaker
Figure 2 Basic structure of Display Unit
2.1 CPU section
The CPU section takes care of the central processing.
The main features are:
• 486 processor
• Internal clock frequency 100 MHz
• 32 Mbytes DRAM
• 8 Mbytes program flash memory
• 32 Kbytes static RAM with real time clock
• 4 channel UART:
• 2 serial channels with signals in AC-logic level
12,1"
Display
Backlight
Inverter
Connector
Board
Keypad Keypad
CPU BOARD
Net
Unit
Sync.
Unit
display_basic_structure.vsd