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3 Using the vLoc3 RTK-Pro
Also, note that the signal will radiate out to the side of the transmitter as well as below. For this reason, it is recommended that
when applying a signal using the induction method, a distance of at least 20m is kept from the transmitter when pinpointing or
taking depth readings. Locating closer than 20m is possible but the operator should be aware that the signal directly received
from the transmitter may be strong enough to influence the results.
When using the induction mode, avoid placing the transmitter over metallic manhole covers as this will severely reduce the
effectiveness of the transmitter and, in extreme cases, cause damage to the transmitter’s circuitry.
3.4 Locating Active Signals
These instructions assume that the Classic Screen is selected, and Peak with Arrows mode is selected for the antenna
configuration.
Apply an active signal to a line using one of the methods outlined above in section 4.3, active locating.
Set the antenna configuration to “Peak with arrows.”
Switch on the receiver and select a desired locate frequency matching the transmitter setting.
Note that the screen will now show the addition of a compass (line direction indicator). In the presence of a locate signal, the
compass will align itself parallel to the line being located. This ensures that the operator is aware of the direction of the line.
69.1
640Hz
25dB
4G
Hold the locator vertically and rotate it on its axis until the compass indicates Forward/Back as above.
Adjust the sensitivity control so that the display indicates approximately 50%. Keeping the vLoc3 RTK-Pro vertical, move to
the side slightly. If the bar graph increases, you are moving toward the line. If it decreases, you are walking away from it. Move
toward the line as indicated by the direction arrows, until a maximum signal is achieved. It may be necessary to reduce the
sensitivity to keep the bar graph on the scale. This is normal and should be expected. Try to keep the vLoc3 RTK-Pro vertical
and avoid swinging it as this may create false readings.
Move the locator side to side to ensure a maximum signal is detected. Use the peak level indicator to assist.
With the maximum signal found and the compass running Forward/Back, the vLoc3 RTK-Pro is now directly over the line and
exactly across it.
