RIDGID NaviTrack II - Manual (Page 12)

NaviTrack® II
11
Step 2: Localize the Area
1. Maximize the signal strength. When it appears to
be at its highest point, place the NaviTrack® II close
to the ground over the high-signal point. Note the
Signal Strength and move away from the high point
in all directions. Move the NaviTrack® II far enough in
all directions to verify that the Signal Strength drops
significantly on all sides. Mark the point of highest
signal strength with a yellow marker.
2. If while “getting closer” a stable equator appears on the
screen it can be followed toward an increasing signal
strength to localize the sonde.
Figure 18: Poles and Equator of a Sonde
3. If while “getting closer” a pole appears first, localize the
sonde by centering in on the pole icon (the icon may
move closer in to the sonde as the receiver approaches
it).
Step 3: Pinpoint the Sonde
The poles should appear on either side of the maximum
signal point, an equal distance on either side if the sonde
is level. If they are not visible on the screen at the point of
maximum signal strength, move from the maximum point
perpendicular to the dotted line (equator) until one appears.
Center the locator over the pole.
The dotted line represents the equator of the sonde.
If the sonde is not tilted, the equator will intersect the
sonde at maximum signal strength and minimum depth.
NOTE: being on the equator does not mean that the locator is
over the sonde. Always verify the locate by maximizing signal
strength and marking both poles.
1. Mark the first pole location found with a red triangular
marker. After centering on the pole, a double-line
indicator will appear representing the direction of the
sonde
When the locator gets close to a pole, a focusing ring will
appear centered on the pole, allowing precision centering.
2. The second pole will be a similar distance from the
sonde location in the opposite direction. Locate it in the
same manner and mark it with a red triangular marker.
3. If the sonde is level, the three markers should be aligned
and the red pole markers should be at similar distances
from the yellow sonde marker. If they are not, a tilted
sonde may be indicated.
Verify. It is important to verify the sonde’s location by
crosschecking the receiver’s information.
4. Double-check. Move the NaviTrack® II away from
the maximum signal strength, to make sure that the
signal drops off on all sides. Make sure to move the
unit far enough to see a significant signal drop in each
direction.
Figure 19: Sonde Locate: Equator
5. Double-check the two pole locations.
6. Notice that the depth reading at the maximum signal
strength location is reasonable and consistent. If it
seems far too deep or too shallow, recheck that there is
an actual maximum signal strength at that location.
7. Notice that the poles and the point of highest signal
strength line up.
IMPORTANT! – Remember that being on the Equator does
NOT mean one is over the sonde. Note that seeing two poles
aligned on the display is not a substitute for centering over
each pole separately and marking their locations as described
above.