The loudness of the alarm sounds can be adjusted (45–86 dB, typical).
Always ensure that the alarm sound setting is appropriate for each patient. The alarm sound
volume is adjustable for suitability to various clinical environments. When you use the
MR400, always ensure that the alarm sound can be heard above the ambient noise level.
Failure to do so may cause a lapse in patient monitoring.
To control the alarm volume
Resetting the alarm results in the following alarm system behaviors:
The alarm can be reset by pressing the Audio Pause key one time.
Expression MR400 Instructions for Use Alarms 4‐7
Press the Setup key and then the Monitor key.
The Monitor Setup menu appears. Current settings are displayed.
On the Monitor Setup menu, select Sound Adjust.
The Sound Adjust menu appears. Current settings are displayed.
Select Alarm Volume.
The menu item appears. The current setting is highlighted.
Select the desired setting from the menu options.
The setting is entered and a momentary sound at the
corresponding level is produced
The auditory alarm signals of physiological alarm conditions cease, enabling the alarm
system to respond to a subsequent alarm condition.
Alarm light indications cease.
Alarm flags for any existing alarms continue as long as those alarm conditions exist.
The alarm system is enabled immediately so that it can respond to a subsequent alarm
The visual alarm signals of INOP conditions do not cease as long as the INOP alarm