Concepts Of Alarm Response Delay - Masimo Opioid Halo User Manual

Concepts of Alarm Response Delay

As with any pulse oximeter equipment, the audible and visual alarms are subject to alarm response
delay, which is composed of Alarm Condition Delay and Alarm Signal Generation Delay. Alarm Condition
Delay is the time from the occurrence of the triggering event to when the alarm system determines the
alarm condition exists. The Alarm Signal Generation Delay is the time from the onset of an alarm
condition to the generation of its alarm signal. The graphic below is a simplified illustration of the concept
of Alarm Response Delay and does not reflect actual lengths of delays.
Ref Definition
1
SaO
2
2 Alarm Limit
3
Displayed SpO
2
The Alarm Condition Delay is graphically represented as t
•
the delay due to processing and averaging.
The Alarm Signal Generation Delay is graphically represented as t
•
show the delay due to alarm system strategy and communication time.
The overall alarm system delay time is graphically represented as t
•
For more information about alarm response delay, refer to ISO 80601-2-61.
•
Ref Definition
4
Alarm Signal Generation
SpO Saturation
2
t
Time
– t
2
65
in the figure above to show
1
– t in the figure above to
3 2
– t .
3 1