Dakota Ultrasonics DFX-8 plus MANUAL1 - Manual (Page 56)

Dakota Ultrasonics
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inches. The operator then positions the transducer on an index point, moves the
transducer in both directions forward and backward, rotates it side to side, and
watches the signal amplitude to find the maximum potential. At the maximum
potential, the transducer is correctly positioned to measure both multiple echoes at
the correct distances, and ready to proceed with the calibration.
Selecting the Material Type:
The user can also select a material type directly from a table built into the DFX-8 with
shear wave values. This would only get the user close, in terms of velocity, to the
calibration standards material type. In order to display the material chart with shear
wave values, the TRIG mode must be enabled. The following outlines the steps to
enable the shear wave velocity table and select a material type from the chart:
For quick access and editing, refer to navigating the Hot Menus page 22.
Selecting the Material Type
1) Press the MENU key once to activate the menu items tab. Press the MENU
key multiple times to tab right and the ESC key multiple times to tab left until
the TRIG menu is highlighted and displaying the submenu items.
Alternatively, press the LEFT and RIGHT arrow keys multiple times
using the left button wheel.
2) Press the LEFT and RIGHT arrow keys on the right button wheel to
toggle TRIG mode ON.