(Model J) Page 113
17.4 Calibration of Controller and Monitor subsystems
a) Before the controller can be calibrated it is necessary to calibrate the pressure
sensors of the Monitor Subsystem.
b) Enter the Calibration program. See “Accessing the Calibration Programs” on
page 24.
c) Disconnect the gas supplies.
17.4.1 Monitor Pressure sensor calibration
Note: The ventilator must be at working temperature with the metal
electronic unit top cover on before calibrating the pressure transducers,
(machine must be on for at least half an hour).
d) Enter the Jet Calibration option panel.
Note: Step e) is to be carried out with new control/monitor boards only,
otherwise leave values as set and move to step f).
e) Set: Forward jet settings gain to 400 and remaining calibration values to zero.
f) Enter Sensor Calibration screen and disconnect all gas from the ventilator.
g) Press and hold the “zero offsets” button for 2 seconds and ensure that the two
proximal pressure transducers read zero.
Acceptable tolerance: ± 1 mbar
h) Reconnect the gas and enter the Jet Calibration screen.
i) Set up the ventilator to CMV mode and set the following parameters:
Set the controls in the CMV Panel as follows
BPM to 10
Insp. time to 3 sec
Set the PIP control to 60mbar
PEEP to 0
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