Line Scan
RD1500 Operation Manual 46 © Radiodetection 2016
Selecting Small will show more of the smaller hyperbolas and more detail, whereas Large will
focus more on the larger targets with better depth penetration. Selecting All will show a
combination of small, medium and large targets.
Figure 8-12: FrequenSee™ settings: a) Top left shows All. b) Top right set to Small targets. c)
Bottom left set to Medium targets. d) Bottom right set to Large targets
Soil Cal
Soil calibration (also known as velocity) is a parameter used to ensure that measured depths
are accurate. The best way to ensure this is by using the hyperbola-fitting method, since it is
based on data collected in the area.
Crossing linear targets like pipes or cables at a 90 degree angle produces a hyperbola suitable
for soil type calibration. The Soil Cal value obtained will be used to compute a depth estimate of
a target.
NOTE: These depths will be incorrect if the soil type is calibrated on a target hyperbola
produced at an oblique angle, rather than 90 degrees.
Press Soil Cal. The menu at the bottom of the screen will change, giving you the option of
either specifying a Soil Type or adjusting the Soil Cal using the hyperbola-fitting method
If there are no targets to calibrate to, and you know the type of soil, press:
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