Chapter 4: T
echnical Specifications
The Spirometry Source
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Volume accumulation time:
•Five FVC curves with a maximum of 25 seconds each
•Five VC curves with a maximum of 45 seconds each
•Five MVV curves with a maximum of 15 seconds each
Start FVC expiration:
•Using the back extrapolation method
End FVC expiration:
•When the volume accumulated in the last second is
below 0.025 litres
FVC test selection:
•Based highest value of FVC or on operator decision
Parameter selection:
•FVC and FEV1, the two with the highest value of the
tests saved. Remaining parameters of the selected test,
with the highest sum being recommended.
Keypad:
•All instructions, data, etc. transmitted by the operator
to the microprocessor involve a touch screen.