Navigation and Operation
Everything needed to navigate and operate the MR400 can be performed by selecting an active
element on the touch screen (including soft keys and buttons, icons, menus, VS boxes and alarm
limits settings). When an active element is touched with a finger or a passive object (such as a
stylus), the MR400 will highlight that option or item, produce a tone and enact the selection.
Never apply unnecessary pressure or use sharp objects on the touch screen as damage or failure
can result. If breakage of the display panel glass does occur and you contact the liquid crystal by
chance, please wash it from your skin using soap and water.
Specialized Control Buttons and Keys
In addition to the control methods described above, some menus, options and items include
specialized soft keys and buttons that control menus, settings and entries:
2‐22 System Overview Expression MR400 Instructions for Use
Trace D displays the CO2 respiration waveform (breath rate)
Trace E displays invasive blood pressure, channel 1 (P1)
Trace F displays invasive blood pressure, channel 2 (P2)
System message area displays system messages and alarm flags;
see chapter 4.
Simultaneously touching two or more screen areas may produce unpredictable results and
is not recommended.
The design of the MR400 allows access to the same menus in different ways.
The MR400 monitors all application processes. If a software process or an application
monitoring failure is detected, then an audible alarm will sound and all visual information
will be removed from the display. To restore normal operation, you must turn the power
switch off and then on. If the problem persists, contact technical support.
To decrement a numeric value, select
To increment a numeric value, select