GE HEALTHCARE E-PSMP, Technical Manual

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Respiratory Modules, E-sCAiOVX, E-sCAiOV, E-sCAiO, E-sCOVX, E-sCOV, E-sCO
8 - 15
2062973-004
1.3.7 CPU board
The CPU board contains the processor, memories and an A/D-converter that is common to the
whole module.
The CPU board also contains sensors for pressure, temperature and humidity as well as drivers
for valves, the fan and the pump. The module is connected to the module bus through an
RS-485 serial channel.
Figure 13 Signal processing on CPU board
1.3.8 MiniOM board
The miniOmM board contains electronics specific to the MiniOM sensor: FPGA circuit, coil drive,
A/D-converter etc. It also contains EEPROM memory that stores calibration data of the oxygen
measurement.
1.3.9 MiniPVX board
The MiniPVX board contains pressure sensors for airway pressure and flow measurement and
preamplifiers for those. It also contains EEPROM memory that stores calibration data of the
spirometry measurement.
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