Mindray Datascope AS 3000, Service Manual

Page: 30 / 180

AS3000™ Service Manual 0070-10-0683 1 - 17
Theory of Operation Ventilator Control and Drive
23. AGND Analog Ground
24. AGND Analog Ground
25. AGND Analog Ground
Bus to BDU, J96
PIN NAME FUNCTION
1 - 3 5V 5V Power
4 - 6 GND Ground
Test Point Definition
DESIGNATOR NAME FUNCTION RANGE
T1 FIO
2
ADC input of O
2
Sensor 0.25-0.51V (In AIR)
T2 Pgas Pressure switch of gas supply,
low active
T3 FL_INSP Inspire Flow signal 0.20-0.30V (0 flow)
T4 Pair Absolute Pressure of air way 1.7-2.1V (atmospheric
pressure)
T5 FL_EXP Expire flow signal 0.20-0.30V (0 flow)
T6 Fm_fl Flow of flowmeter 0.25-0.51V (flowmeter off)
T7 AD-Exhale PEEP valve, current feedback Level depends on PEEP
setting and vent mode. No
activity may indicate open
connection from driver to
valve (ie. bad cable)
T8 Volt Internal power inspect
T9 MUTE Not used
T10 M-EN Manual/Auto mode select
T11 V-EN Valves enable Input Global valve enable signal.
Must be active for valves to
operate.
T12 EX-DA Exhale DA output
T13 In-DA Inhale DA output
T14 GS_ST gas supply status, high active
T15 XVI unamplified version of T7
T16 IVI unamplified version of T28
T17 MVI Manual-Valve current feedback
T18 IVG Proportional valve drive signal,
drives T16 and T28 Level depends on machine
settings.
T19 XVG PEEP valve drive signal - drives
T15 and T7 Level depends on PEEP
setting and vend mode.
T20 PADJ Power 4.8V 4.8V
T21 P24V Power 24V 24V
T22 P12V Power 12V 12V
Signals and Power to Sensor Board, J30 (Continued)
PIN NAME FUNCTION