Dakota Ultrasonics DFX-7 plus MANUAL1 - Manual (Page 17)

DFX-7 Ultrasonic Flaw Detector
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X-OFFSET: This feature is used to calculate the surface distance in the trigonometry
function, as is a physical measurement from the index point of the probe to the front
of the wedge/can/shoe/case. Refer to page 51 for further info.
CSC OD: Curved surface correction to compensate for changing sound path
distance and angle. This feature is used in conjunction with ‘thickness’ in order to
calculate a correction factor. Refer to page 51 for further info.
3.9 AWS – Menu
AWS: This feature toggles the AWS feature on/off. Used in the analysis of welds
according to American Welding Society’s structural welding code D1.1-94, to
calculate the Indication Rating (IR). Refer to page 56 for further info.
REFERENCE GAIN: The gain (in dB) required to set the indication level to a specific
percentage of full screen height (FSH). This value will typically be set somewhere
between 20%–90%. Refer to page 56 for further info.
% SCRN HEIGHT: This feature enables the user to set the reference level of the
TCG as a percentage of full screen height (FSH). Refer to page 56 for further info.
3.10 TCG – Menu
TCG: This feature toggles the TCG feature on/off. The Time Corrected Gain (TCG)
feature displays reflectors of equal size at equal A-Scan amplitudes, regardless of the
reflector’s depth in the test material. Refer to page 67 for further info.
DRAW: Toggles the DRAW mode on/off, and used to draw the TCG curve. Refer to
page 67 for further info.
SHOW CURVE: Toggles the TCG correction curve on/off, and the curve is displayed
on the screen. Refer to page 67 for further info.
% SCRN HEIGHT: This feature enables the user to set the reference level of the
TCG as a percentage of full screen height (FSH). Refer to page 67 for further info.
3.11 DAC – Menu