GE Aespire 7100 Technical Reference Manual page 65

2 Th eory of Operation
有le
Vent Engine Board
(V
EB) provides two functions:
• Itserves as an interface between the control board and the pneumatic
engine.
•
Itprocess臼 the
output from the airway pressure transducer.
2.7.7 Vent Englne Board
Th e board provides a direct connection for the drive and retum lines for the
control valves on the pneumatic engine:
Pneumatlc 画191ne
Interface
•
Inspiraωry
Flow Valve
• PEEPValve
• PEEP Safety Valve
Th e board routes the Supply Pressure Switch signals to 由 e control board.
刊e
VEB includes a +5VA regulator to powerthe airway pressure transducer
circuitry. Th e circuits provide EMI filtering , signal amplification , and buffering.
Alrway Pressure Transducer
FLOW OR
FLOW_RET
E
O
-
u 国 z
z
a
u
az--adaz--EU--FH
PEEPVALVE
SAFETYVAl旺
LOW SUPPLY PRESSURE
SWITCH CONNECTOR
旦旦旦L四E
SUPPLY _LOW_RET
PEEP OR
丽#踹
SAFETY_VLV_R盯
2-39
g
g
g
+5 VA
Rgure
2-27 •
Vent Engine Board (VEB)
ω:/07
Ml110140