bca DTS Tracker Manuel D'utilisation page 9

Operating Instructions
Figure G
Multiple burials
In close proximity burials, if the
first victim's beacon cannot be
turned off, stay in SE mode and
use the "three circle method."
Advanced users should use
SP mode.
Special Mode: For greater efficiency in close-proximity multiple
burials, use special (SP) mode. This mode enables the Tracker to
display the distance and direction of signals other than those of the
closest beacon. It also reduces the Tracker's search "window" to
the center three directional lights, enabling the searcher to mask
out beacon 1 and differentiate it from beacon 2. SP mode is used
to determine approximately what direction and distance to go to get
closer to beacon 2. Once you are closer, always switch back to SE
mode.
Figure H
Search (SE) mode
In search mode (SE), only the
strongest signal (beacon 1) is
shown. Signals further away
are received (beacon 2), but
not shown in the distance and
direction display.
To use SP mode, first re-engage beacon 1 in your center search light
at the lowest possible distance reading. With the center search light
engaged, switch the Tracker to SP mode (Figure I). Then rotate—
do not sweep—the Tracker slowly until another signal is detected
(beacon 2), most likely with a larger distance reading. If the Tracker
is rotated more than about 40 degrees away from the flux line of
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beacon 1, that signal will disappear, allowing you to focus on the
signal from beacon 2.
If no other signal is captured in SP mode and you suspect victims
are nearby, stand up and try again at chest height. If still no other
signal is detected, take three steps back and repeat (or revert to SE
mode and use the three-circle method).
Once you have located another signal in SP mode, begin to move
in that direction. If the distance consistently decreases, you are
going in the right direction. Travel far enough in SP mode to confirm
the distance is decreasing and which way the flux line is trending.
If more than one signal is being displayed and it becomes unclear
which one to pursue, continue in the direction you have been
searching. Always switch back to SE mode when you think you are
getting closer to beacon 2 than beacon 1.
If after finding a victim, no further signals are detected in SP mode,
continue the search if there are still missing victims. Revert to search
mode and perform a signal search of the remaining unchecked areas
within the debris pile. Resume your signal search at the point where
it was originally abandoned.
For more details on multiple burials, please refer to our website:
www.backcountryaccess.com.
Figure I
Special (SP) mode
In special mode (SP), all signals
are shown, but Tracker acts as a
"spotlight" with narrowed vision:
approximately 75 degrees in front
and in back of the searching beacon.
Only the signals within this angle
(beacon 2) are shown. This 75° angle
corresponds to the Tracker's center
three lights.
Always switch back to search mode
(SE) when you're more than halfway
from beacon 1 to beacon 2.
Operating Instructions
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