Operator's Manual

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Appendix: Concepts of Alarm

Response Delay

Concepts of Alarm Response Delay

As with any patient monitors, 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. While 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 using a pulse oximeter that measures SpO

as an example. The

graphic does not reflect actual lengths of delays.

Reference

Definition

SaO