getemed VitaGuard VG2100, Руководство по эксплуатации

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Alarms, displays, and views during monitoring 59
The reasons for incorrect values can be detached electrodes or other
technical defects. When a technical alarm condition occurs, a life-
threatening situation may escape detection.
When, for example, a technical alarm has occurred, yet at the same
time a physiological alarm condition has been detected, the physio-
logical alarm condition has priority and the physiological alarm is
reported.
NOTE An alarm mute time of ten seconds follows a technical alarm
triggered by problems with the ECG electrodes. This delay is to
prevent false alarms when the physiological parameters are being
recalculated. During the alarm mute time, the bell symbol in the
status line is crossed out.
7.5 Differentiating physiological and technical
alarm signals
The
Alarm tone pitch
can be set in the
System
menu so that alarms
are heard over the prevailing background noise.
The urgency or priority of an acoustic alarm can be recognized by its
characteristics described in the following.
High-priority messages emit two sequences of five tones that are
repeated every ten seconds.
The interval between each tone packet is two seconds. Also, there is a
slightly longer interval
between the third and
fourth tone of each
sequence.
Fig. 31 Characteristics of the high-priority acoustic alarm signal
Medium-priority messages emit a sequence of three tones which is
repeated every 5.2 seconds.