58 Alarms, displays, and views during monitoring
When, for example, a technical alarm condition has occurred, yet at
the same time a physiological alarm condition has been detected, the
physiological 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 SpO
2
sensor. This delay is to prevent
false alarms when the physiological parameters are being recalcu-
lated. 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. 39 Characteristics of the high-priority acoustic alarm signal
Medium-priority messages emit a sequence of three tones which is
repeated every 5.2 seconds.
7.6
Acoustic information signals
If wished, the alarm unit next to the display can produce a short
acoustic signal to accompany each pulse.
Summary of Contents for VitaGuard VG310
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