F15 Series Fetal & Maternal Monitor User Manual Alarms
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Chapter4 Alarms
WARNING
A potential hazard can exist if different alarm presets are used for the same or similar
equipment in any single area.
4.1 Alarm Classification
The monitor has two types of alarm: patient alarm and technical alarm.
Patient alarms indicate the situation of vital sign exceeding its configured limit. Audible alarms and
visual alarms can be disabled excluding ASYSTOLE alarm. The adjustable alarm limits determine the
conditions that trigger the alarm.
Technical alarms indicate that the monitor cannot measure and therefore cannot detect critical patient
conditions reliably. They cannot be disabled.
In terms of severity, the alarms are divided into three priorities: high, medium and low. High priority
alarm indicates the condition where the patient is endangered; it is a severe warning, labeled with the
symbol ***; Medium priority alarm is a moderate warning, labeled with the symbol **; low priority alarm
is a general warning.
The high priority alarms have highest priority, and the medium priority alarms take the second place. If
more than one type of alarm is active at the same time, the monitor sounds an audible indicator for the
higher priority alarms.
The alarm priorities are preset, and you cannot change them.
4.2 Alarm Delay
There is a delay between a physiological event at the measurement site and the corresponding alarm
at the monitor. This delay has two components:
1 The time between the occurrence of the physiological event and when this event is represented
by the displayed numerical values. This delay depends on the algorithmic processing time and on
the measurement dependent averaging time. (For example, the FHR algorithmic processing time
is no more than 30s)
2 The time between the displayed numerical values exceeding an alarm limit and the alarm
indication on the monitor. This delay is the combination of the configured alarm delay time plus
the general system delay time. The general system delay time is less than 4s.
4.3 Audible Alarm
If the audible alarm is not disabled, the alarm indicator displays . When an alarm is active, the
monitor gives out a sound. (The sound pressure range is 45dB ~ 85dB.)
High priority alarm: a “Do” tone is repeated five times, and then pauses for 3seconds.
Medium priority alarm: a “Do” tone is repeated three times, and then pauses for 4seconds.
Low priority alarm: a “Do” tone is issued, and then pauses for 20 seconds.
Press the SILENCE key, the current audible alarm toggles between on and off (temporarily or
infinitely, you can change the setting).
If the current audible alarm is temporarily disabled, the alarm indicator displays , with a
remaining time on the right. The audible alarm is enabled again when the time is out, or when the
SILENCE key is pressed.
If the current audible alarm is infinitely disabled, the alarm indicator displays , which is flashing
Traditional 510(k) of Fetal & Maternal Monitor
014_14.1_F15_Series_User_Manual
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