Dakota Ultrasonics DFX-8 plus MANUAL1 - Manual (Page 90)

Dakota Ultrasonics
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1) Press the UP and DOWN arrow keys multiple times on the left button
wheel until REFERENCE GAIN is highlighted, followed by pressing the
LEFT and RIGHT arrow keys on the right button wheel to toggle on. With all
the parameters set in the previous section, press the MEAS key to return to
the main measurement screen.
Note: The user should now see a highlighted cursor displayed in the waveform
area, starting at the left most side of the display. Also note that the DGS BOX
will be highlighted in the hot menus on the right of the display.
2) Couple the transducer to the first calibration standard, and peak up on the
reflector, adjusting the gain to keep the signal height within the boundaries
of the waveform display area, and at a suitable height to allow for
attenuation at greater depths in the overall range to be tested.
3) Press the LEFT and RIGHT arrow keys on the right button wheel to
move the cursor over the waveform that will be used to set the
REFERENCE GAIN and draw the DGS curve.