Datex-Ohmeda Aestiva 7900 SmartVent Technical Reference Manual page 55

Figure 4-7 • Drive Gas menu item
4a.3.3.3 Heliox Mode
Figure 4-8 • Heliox Mode menu item
4a.3.3.4 V Alarm Limits
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1006-0453-000 05/04
Aestiva machines can be configured to deliver Heliox. These machines should
have the Heliox Mode "On". With the Heliox Mode On, the operator can
choose to turn the Heliox On or Off in the Setup/Calibration menu.
If the machine is not configured to deliver Heliox, the Heliox Mode should be
set to "Off". With the Heliox Mode Off, the Setup/Calibration menu will not
include the Heliox option.
The setting for V Alarm Limits determines how the V
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• If V Alarm Limits is set to User Adjustable, the user sets the limits on the
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Alarm Settings menu.
• If V Alarm Limits is set to Automatic, the ventilator software calculates the
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high and low V alarm limits and sets them to ±20% of the set V
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is still able to change the limits through the Alarm Settings menu in the Main
Menu.
4a Tests and Calibration 4.X Software
Alarm Limits are set:
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. The user
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4a-9