DFX-7
Ultrasonic Flaw Detector
103
9) Finally, press the
MEAS
key to return to the measurement screen.
11.16 Detect Modes
The
DFX-7
has three selectable modes of detection: Z-Cross, Flank, and Peak. The
following diagram illustrates the difference between the options:
Z-Cross
Flank
Peak
Refer to the diagrams above. The current polarity is positive, as shown by the
position of the gate above the baseline:
Z-Cross:
The detection occurs as the first positive half cycle crosses the baseline
and goes negative.
Flank:
The detection occurs as the first half cycle left edge rises and breaks the
threshold.
Peak:
The detection occurs at the highest peak in the gate.
The procedure to select the
DETECT MODE
is outlined below:
Selecting the Detect
