User's Manual

Measurement Parameters Menu

Depth defines the length of the radargram vertical scale. This is

sometimes referred to as the time window length. In this case,

the the set velocity is used to calculate the depth window.

Note: This value will vary if the soil velocity measurement

parameter is changed.

Set to manual or auto (Automatic Gain Control).

Note: Manual gain activates the Time Gain button on the main

screen and allows the user to manually adjust the gain. Selecting

Auto deactivates the Time Gain button on the main screen and the

GX HDR Controller will apply the highest gain level for the signal to

noise ratio.

Set the velocity based on soil type. Setting the velocity allows the

adjustment of the depth scale for differing soil conditions.

Warning: This is a critical setting if accurate depth information is

required. Soil conditions can vary rapidly with location and all

depth information must be used with caution.

Tip: The velocity can be set during the post-processing stage; it is

not critical that this measurement is established during the data

collection stages, unless marking the depth on site.

Set the type of trigger to be used for initiating a measurement.

Three triggering options are available:

Wheel, Time, or Keyboard Triggering.