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6.4 Analog Mode
In the analog mode, the transceiver shows distance
and direction to the subject with the strongest sig-
nal and provides an analog tone.
The analog mode
is mostly used when a clear distinction of multi-
ple burials is no longer possible in standard
mode.
Switching from standard mode to analog mode is
achieved by pressing and holding both keys at the
same time for three seconds.
In analog mode, the direction indication always
points forward, never backwards. Monitor the dis-
tance indication to ensure you are approaching the
buried subject!
6.4.1 Multiple Buried Subjects in Analog Mode
If multiple burials are detected in analog mode, an
icon symbolizing multiple burials is shown on the
display
. Additionally, you can also hear the ana-
log tones. These are helpful in distinguishing the
signals acoustically. The device favors the closest
subject. The detection of multiple burials may vary
based on the subject’s orientation and distance rel-
ative to the rescuer.
Turn off the transceivers of the excavated subjects
to facilitate the further search. If you don’t know the
number of buried subjects, you must search the
entire avalanche path using the search patterns
described in the chapter «Signal Search».
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S E A R C H M O D E
6.3.4 Limitations
The larger the number of buried subjects, the more
difficult and time-consuming the exact analysis of
the situation gets, because of overlapping signals.
The more signals there are, the longer the signal
overlaps can last. The capability to automatically
detect and isolate signals from multiple buried sub-
jects is therefore limited.
Number of Burials
The calculated number of burials is displayed below
the list of buried subjects. If the transceiver detects
more signals than buried subjects in the list, a +
sign is added behind the number.
+Symbol
The +symbol indicates that signals are received from
additional buried subjects that cannot be isolated
and entered in the list of buried subjects yet. Turn off
the transceivers of the buried subjects already found
as soon as possible to simplify the isolation of the
remaining signals.
Search Suspension / “Stand still!”
During the search for multiple subjects, signals may
overlap making it impossible to analyze the signal
of a single buried subject. If the signal overlap lasts
several seconds, the rescuer has to interrupt the
process temporarily to avoid deviating from the
optimal search path. The Barryvox
®
will indicate
the necessity to suspend (max. 15 seconds) the
search by displaying the word «Stop». Stand still,
and do not move until the word «Stop» disappears,
at which time you can continue to search.
Analog Tone
Outside of the fine search range, the Barryvox
always provides the analog tone allowing the res-
cuer to verify the number of signals detected by the
device. Counting the number of different tones pro-
vides the number of buried subjects.
Criteria to switch to Analog Mode
If the rescuer detects problems with the analysis of
a multiple burial situation, he or she can always
switch to the analog mode (see chapter «Analog
Mode»). The list of buried subjects is deleted at this
time.
If you recognize a discrepancy between your “men-
tal map” of the avalanche and the indications on
the transceiver or the + symbol appears for an
extended period of time, this is an unquestionable
indication that not all buried subjects can be locat-
ed using the standard mode. In this case, it is
advised to switch to the analog mode.
