Mindray A7

A7™ Service Manual 046-006272-00 1 - 73
Theory of Operation Ventilator Control and Drive
VT Calibration Communication Interface, J7
Three-way Valve Control Interface, J6
VPM Communication Interface, J5
O2 Cell Detection Interface, J12
Test Point Definition
PIN NAME FUNCTION
1 TXD_CALIBRATE Calibration Serial Port Transmit Signal
2 RXD_CALIBRATE Calibration Serial Port Receive Signal
3GND Ground
4 12V 12V Power Supply
PIN NAME FUNCTION
1 12V Three-way Valve Power Supply
2 SOLENOID_VALVE1 Three-way Valve Control 1
3 12V Three-way Valve Power Supply
4 SOLENOID_VALVE2 Three-way Valve Control 2
5 12V Three-way Valve Power Supply
6 SOLENOID_VALVE3 Three-way Valve Control 3
7 12V Three-way Valve Power Supply
8 SOLENOID_VALVE4 Three-way Valve Control 4
PIN NAME FUNCTION
1 TXD_AUX_BRD VPM Serial Port Transmit Signal
2 RXD_AUX_BRD VPM Serial Port Receive Signal
3GND Ground
4 12V 12V Power Supply
PIN NAME FUNCTION
1O2+ O2 Cell +
2O2- O2 Cell -
3GND Ground
DESIGNATOR NAME FUNCTION RANGE (unit: V)
T1 O2 O2 Concentration Voltage 0~3.5
T2 PP PEEP Pressure 0.2~4.5
T3 PW Airway Pressure 0.2~4.5
T6 FM Ventilator Flow Detection 0.21~5.25
T8 FE Expiratory Flow Value 0.2~5.5
T9 VAJF3 Offset Voltage 0.602~0.622
T10 10V5 10.5V 10.25~10.75