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4 Using the vLoc3-DM Receiver
Note that there will be no sound from the speaker until the meter reading is above approximately 10%
of the full scale.
4. Keeping the vLoc3 receiver vertical walk across the area to be checked keeping the orientation so that the blade is in
line with the direction of walking (See diagram above). If using the Onmi Peak mode the orientation of the locator is not
essential.
5. Continue in a grid across the area.
6. If the meter reading starts to increase, carefully move the locator side to side to detect the maximum signal. Use the peak
level indicator to help confirm the correct position.
(a)
(b)
Power 50
94.4
22dB
0cm
4.5m
12.1
Power 50
22dB
0cm
4.5m
94.4
Power 50
22dB
0cm
4.5m
7. Rotate the vLoc3 receiver on its axis to obtain the maximum signal. The vLoc3 receiver is now directly over the line and with
the blade across the line. If using the Omni-Peak mode there will be no change so switch to Peak mode if the direction is
required.
8. The direction can also be found by rotating until the smallest signal is detected. The blade is then in line with the cable/pipe.
9. Continue to locate the line's position at regular intervals until its course is known throughout the target area.
4.1.2
Detecting Radio Signals
1. Locating radio signals is very similar to detecting power signals as they are both passive signals.
2. Hold the vLoc3 receiver vertically and away from likely positions of cables or pipes.
3. Adjust the sensitivity control so that the bar graph reading is just starting to show some movement. Now follow the
procedure described above in the power mode section.
