Vivax Metrotech 4.04.000170, User Handbook Manual

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Page 31 of 66
3 Using the vLoc3 RTK-Pro
3.4 Searching (sweeping) an Area in the Peak Mode
Buried utilities are not parallel to each other, and frequently they cross
the area being searched at various angles and depths.
As locator antennas' response is directional (using the traditional
screen), it is important to search the area in the same or similar pattern
as shown.
This orients the antennas in a way that will locate any signals being
radiated from the buried utility.
Once a response is found, trace, pinpoint, and mark the utility. Searching
an area in this way is generally (but not exclusively) done in the “Peak”
mode using passive locating.
3.5 Searching (sweeping) an Area in the Omni Peak Mode
Searching in the Omni Peak mode is very similar to the Peak mode,
except that it is only necessary to sweep an area in one direction.
A zig-zag motion is enough rather than a full grid action because the
locator will respond to a signal from a line in any direction. It has the
benefit of cutting the sweep time in half.
3.6 Tracing a Buried Line
Where possible, trace out from the transmitter connection point. Having
“pinpointed” the line, hold the locator vertically and in front of you with
the compass line indicator pointing forward/back.
Start by moving the locator left to right/right to left over the line. Keep the
movement over the center of the line, i.e., the largest meter response,
adjusting the gain when necessary.
Whenever practical, it should be traced to the point that provides
additional confirmation of what type of service is being located (i.e., a
telephone pedestal, a manhole cover, etc.).
3.7 Depth & Current Measurement
If the depth measurement feature is activated, it is possible to take depth
measurement estimations.
To take a depth measurement, first, pinpoint the position of the line as
above. Place the vLoc3 receiver's tip on the ground, making sure it is
vertical and across the line, i.e., the compass indicating Forward/Back.
Momentarily press the “i” button.
Log 2
0.54m 163mA
50°42′59.90570′′N
3°26′35.54358′′W
27.50m
4G
0′1′′ (2DRMS)
The screen will change to a screen similar to the one on the right.