A5/A3™ Service Manual 046-001141-00 1 - 71
Theory of Operation Ventilator Control and Drive
Power Supply Interface, J2
Coomunication Interface, J4
1.7.5 Breathing System Heater
The anesthesia system heater provides software and hardware dual-protection from overheating. The
heater can switch over its operating mode automatically according to the change in ambient
temperature.
PIN NAME FUNCTION
1 12V 12V Power Supply
2 12V 12V Power Supply
3GND Ground
4GND Ground
5 VDD 3.3V Power Supply
6 VDD 3.3V Power Supply
7GND Ground
8GND Ground
PIN NAME FUNCTION
1 TXD_Infrared Comm Board Infrared Communication Board Serial Port Transmit Signal
2 RXD_Infrared Comm Board Infrared Communication Board Serial Port Receive Signal
3GND Ground
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