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2 vLoc3 Series Receivers
The color of the confidence circle also changes depending on the degree of confidence:
Green - Low distortion/high confidence.
Blue - Minor distortion/medium confidence, so please proceed with care.
Red - Excessive distortion/low confidence. Treat all data and measurements with caution.
7. Notice that vertical and horizontal distances from the target line are displayed.
1.43m
1.86m
These must not be mistaken for the distance diagonally to the target, such information is not displayed. The vertical distance is
the true depth from the bottom of the locator. The advantage of this is the target's depth and position can be determined without
being directly over the target line. In the event of an obstruction at the measuring point, data can still be gathered by placing the
locator on one side of the target.
2.9.2
The Transverse Plot Screen
The Transverse Plot screen is used to analyze the field shape at a particular location which enables the user to better feel for
the data's reliability.
Two plots are generated simultaneously.
• Peak response
• Null response
In non-distorted fields the Peak and Null positions should coincide and the shape of the fields should be symmetrical about the
centerline. The picture below screen shows a slightly distorted field.
3’9”
33dB 14.1mA
8.19kHz
To take a plot, first locate the target using one of the other locate screens. Then select the Transverse screen by a long press of
the return button. Repeat this until the Transverse screen appears.
Position yourself to one side of the line so that the field markers are just on the screen. You will see that the lines automatically
remove themselves after a set period of a few seconds. Clear the screen by pressing the “–” button. Now walk across the target
line at a steady pace until you are on the other side of the target line. Immediately press the “+” button to save the plot on the
screen.
It is still possible to walk back over the target locating the line's position in the transverse screen while still retaining the saved
screen.
2.9.3
The Plan View Screen
The Plan View screen shows a picture as if you were viewing the line from above ground. When the red line is in the center and
pointing forward/back, you are directly over the line and pointing in the line's direction.
14’5’’
4
3
2
1
12.9mA
32.8kHz
4
G
5
14’5’’
12.9mA
32.8kHz
4
G
