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3 Using the vLoc3-5000
65.3
25dB
640Hz
2.1m
6. If the bar graph is not steady, it will most likely be because the sonde is not within range. In this case, hold the locator at
approximately 45 degrees to the ground and rotate the locator around a full 360 degrees around you.
Note the strongest signal's direction and walk towards it until the bar graph shows a steady signal. Now revert to step five
above.
7. Walk slowly in the direction of the arrow.
8. A double circle will appear on the screen, indicating the position of a null signal. Walk toward it and position it over the
crosshairs of the screen. Now rotate the locator so that the arrow is pointing forward.
88.1
32.8kHz
25dB
2.1m
9. Keeping the null indicator on the vertical line walk toward the arrow.
10. A Sonde icon will soon appear. Keeping the locator vertical carry on walking toward the Sonde until it is positioned on the
crosshairs. The locator is now directly over the Sonde. The arrow will flip forward and back as the position is crossed.
82.9
22dB
32.8kHz
2.1m
11. Note that it may be necessary to confirm the Sonde position when directly over the Sonde left to right. Do this by moving
the locator left to right to identify the strongest signal's position as indicated on the bar graph. At this time the depth of the
Sonde will be displayed at the top of the display.
12. Having pinpointed the Sonde position it can now be pushed into a new location and the process repeated. It is advisable to
keep the survey intervals too short distances such as six feet (two meters) making locating easier.
13. Pressing the Information key shows the depth measurement and data and data logging capabilities.
3.11
Signal Direction Precision Identification
vLoc3 receivers with the SD option installed will show this SD icon label on the receiver's blade where it
meets the yellow upper housing.
Some vLoc3 series receiver locators contain a feature named Signal Direction or SD. This feature verifies that the line being
located is the same line that the transmitter is connected to.
When a transmitter is connected to a target line the signal travels along with it and finds the easiest way to travel back, usually
via the ground and ground stake. However, the signal will often travel back along with adjacent cables or pipes offering an easier
route.