Sensors & Software Inc. NG250 ユーザーズマニュアル

11-Locate & Mark Mode

Noggin

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4)

Press the Soil Type button and toggle through the five different soil types to find

the one that roughly fits the shape of the Indicator Arch to the shape of the Target Arch.

5)

Use the Wide and Narrow Arch buttons to change the shape of the Indicator Arch

to match the shape of the Target Arch on the GPR image.  The depth of the target is indicated on
the bottom left.

6)

Press the Apply button to save the Soil Type and update the Depth Axis on the

Scanning Screen.  The Depth axis can now be used to estimate the depth of targets while
scanning in the area.  

If there are no suitable arches visible in the image to perform the Target Arch Matching described
above, there may be a target of known depth in the area being scanned. 

To determine the Soil Type using a target at known depth:

1)

With the target response visible on the image, use the Up and Down Arrows to

move the Depth Indicator (and Indicator Arch) until it lies on top of the GPR response of the
known target.  

2)

Use the Wide and Narrow Arch buttons to change the shape of the Indicator Arch

until the depth of the target, displayed in red above the menu, is correct.