Checkline DFX-7 - Manual (Page 45)

DFX-7 Ultrasonic Flaw Detector
41
Coupling to the 1” Cal Standard (1
st
Point)
Apply a drop of couplant on the transducer and place the transducer in steady
contact with the 1” calibration standard. Be sure that the reading is stable and
the repeatability indicator, in the top left corner of the display, is fully lit and
stable. Also, be sure there is sufficient signal amplitude in order to avoid ‘peak
jumping’ or missing the first cycle.
Adjusting the Gate
1) Press the MEAS key once to activate the measure menu items. Press the
MEAS key multiple times to move right and the ESC key multiple times to
move left, until the GATE1 cell is highlighted.
2) Press the LEFT and RIGHT arrow keys to move the gate over the waveform
to be measured, as demonstrated in the screen shot above.
Note: In order to trigger on a signal, the waveform must be inside the
boundaries of the gate.
Calibrating the First Point
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 CAL menu is highlighted and displaying the submenu items, as shown in
the screenshot above.
2) Use the UP and DOWN arrow keys to scroll through the sub menu items
until MATL 1PT is highlighted.