GE Corometrics 126

4-4 120 Series Maternal/Fetal Monitor Revision B
2015590-001
Theory of Operation: Main Motherboard
Figure 4-3. Main Motherboard Communications Data Flow
Figure 4-4. Main Motherboard Audio Control Flow
Main Motherboard
External QS
Central System
External RS-232C
MSpO
2 Monitor
External RS-232C
NBP Monitor
Internal RS-232C
NBP Module
Internal RS-232C
Future Module
Corolan
NBP
Data
MSpO
2
Data
External RS-232C
(reserved for future use)
Parameter
Data
Internal RS-232C
MSpO
2 Module
NBP
Data
MSpO
2
Data
Parameter
Data
Audio Mixer
and
Filters
Audio
Amplifier
Timer 1
Timer 2
ECG Timer
US1
US2
Volume Controls
From Host Processor