DFX-7
Ultrasonic Flaw Detector
57
3) Press the
UP
and
DOWN
arrow keys to scroll the highlighted value.
4) Press the
LEFT
and
RIGHT
arrow keys to scroll the digit locations.
5) Repeat steps
3 & 4
until the height is correctly displayed.
6) Press the
OK
key to set the
% SCRN HEIGHT
and return to the menu
screen, or
ESC
to cancel entering the
% SCRN HEIGHT
.
Note:
% Screen Height is an arbitrary level, and is not specified by the AWS
D1.1. The user should set a value that will optimize viewing defects that are
larger and smaller than the reference level. Typically this level is set between
50%-80% full screen height.
Setting the Reference Gain
1) Press the
UP
and
DOWN
arrow keys until
SET REF HEIGHT
is highlighted,
followed by pressing the
LEFT
and
RIGHT
arrow keys to toggle the feature
ON
.
2) Press the
MEAS
key once to activate 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.
Note:
A gray cursor should be visible in the waveform area of the display.
Also, since the
DFX-7
has been previous calibrated and the
TRIG
feature has
been setup, a gate should be enabled and active.
Peak Up on the Reflector
1) Apply couplant on the calibration standard, place the transducer in the
correct area in position with the reflector, and slide the transducer around to
locate the maximum amplitude.
