Dakota Ultrasonics8811.5 Material Velocity ChartsThe DFX-7 has two material velocity charts built into the gauge with both longitudinaland shear material velocities. It should be noted that in order to display the chartcontaining the shear wave velocities the TRIG mode must be activated, as we’veassumed an angle beam transducer will be used for the inspection process. Theprocedure is listed below:Selecting a Basic Material Type1) Press the MENU key once to activate the menu items tab. Press the MENUkey multiple times to tab right and the ESC key multiple times to tab left untilthe CAL menu is highlighted and displaying the submenu items.2) Use the UP and DOWN arrow keys to scroll through the sub menu itemsuntil MAT is highlighted.