F9, F9 Express Fetal & Maternal Monitor User Manual Alarms
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Chapter 4 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 levels: high, medium and low. High level
alarm indicates the condition where the patient‟s life is endangered; it is a severe warning, labeled
with the symbol ***; Medium level alarm is a moderate warning, labeled with the symbol **;
low level alarm is a general warning.
The high level alarms have highest priority, and the medium level alarms take the second place. If
more than one type of alarms is active at the same time, the monitor sounds an audible indicator
for the higher level alarms.
The alarm levels are preset, and you cannot change them.
4.2 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 level alarm: a “Do” tone is repeated three times, and then pauses for 3 seconds.
Medium level alarm: a “Do” tone is repeated three times, and then pauses for 5 seconds.
Low level 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 in the manner of lighting for one second and pausing for one second. The audible alarm
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