Initial Audible Alarm Setting Indications
After power‐up and immediately following the recall of a stored setup, the MR400 provides an
indication of the alarm volume by sounding the alarm tone at its currently adjusted setting for 5
seconds and by displaying Check Alarm Volume.
Audio paused is the initial alarm state and then, following a wait period of 120 seconds, armed
becomes the normal alarm state, where:
Controlling the Alarm Audio and Light Indications
Alarm audio indications and the alarm light can be controlled to meet the desired level of
response using the Audio Pause key or the Alarm key.
When an alarm is indicated, always confirm the alarm conditions with clinical observations of the
patient before administering interventions. Failure to do so may result in inappropriate
Expression MR400 Instructions for Use Alarms 4‐5
An alarm will sound while an alarm condition exists, provided that any pre‐alarm sound
delay has expired and that the alarm audio armed symbol is displayed.
Alarm flags related to other alarm sound states will be removed from the display.
An alarm condition not previously placed in an alarm audio off state will cause the alarm to
Audio Pause key