9-3 
 
9.4.2 Audible Alarm Tones 
The ventilator uses different alarm tone patterns to match the alarm level: 
  High level alarms:    broadcasts the high level alarm sound. 
  Medium level alarms:  broadcasts the medium level alarm sound. 
  Low level alarms:    broadcasts the low level alarm sound. 
 
NOTE 
  The ventilator’s alarm signal sound pressure level is lower than 85 dB. 
 
 
9.4.3 Alarm Message 
When an alarm occurs, an alarm message will appear in the ventilator’s alarm message filed. 
The alarm message uses a different background color to match the alarm level: 
  High level alarms:    red 
  Medium level alarms:  yellow 
  Low level alarms:    yellow 
The prompt messages displayed in the prompt message filed have no background color. 
 
For physiological alarms, the asterisk symbols (*) before the alarm message match the alarm 
level as follows: 
  High level alarms:    *** 
  Medium level alarms:  ** 
  Low level alarms:    * 
 
 
9.4.4 Flashing Alarm Numeric 
If an alarm triggered by an alarm limit violation occurs, the numeric of the measure 
parameter in alarm will flash at a specified frequency.