Control Panel And Display - Datex-Ohmeda Aestiva 7900 SmartVent Technical Reference Manual

2 Theory of Operation
2.3.2 Control panel and
Figure 2-4 • Ventilator control panel with software version 4.X
2-6
The control panel on the Aestiva 7900 Ventilator is either outboard (on an
arm) or on a hinge to fold flat against the machine (depending on the option
display
ordered) and is made to permit you to grip the panel and push the buttons
with your thumbs. The ventilator control panel position is easily adjusted.
For the Aestiva/5 MRI machine, the display is centrally mounted above the
flowhead.
The front panel assembly has four submodules:
• The electroluminescent (EL) display
• The keyboard front panel
• A rotary encoder
• A speaker
The keyboard and rotary encoder are used to control the operations of the
ventilator. The front panel uses a three step — selection, change, and approve
— setting scheme to prevent unwanted selections. The speaker supplies audio
input to the operator.
Logical layout of primary controls is left to right in the sequence: tidal volume
or inspiratory pressure level, respiratory frequency, I:E ratio, maximum
inspiratory pressure, and PEEP (positive end expiratory pressure).
Primary Ventilator interfaces include:
• Display
• Soft keys
• Rotary encoder (control wheel)
• Knob button (control wheel)
• LED
• Audio
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