Dakota Ultrasonics
20
2) Use the
UP
and
DOWN
arrow keys to scroll through the sub menu items
until
VIEW
is highlighted.
3) Use the
LEFT
and
RIGHT
arrow keys to scroll the view options.
4) Once the view is displayed, press the
MEAS
key to return to measurement
mode.
DIGITS:
Displays the digital thickness value using a large font size. This view is
useful when the DFX-7 is being used as a basic thickness gauge.
RF:
Displays the actual waveform signal, much like an oscilloscope, from the
reflection of the opposite surface, pit, flaw, crack or void. This view shows both the
positive and negative peaks, and is often used to fine tune the scope settings, prior to
inspection.
RECT:
Displays a half waveform signal, either positive or negative, from the
reflection of the opposite surface, pit, flaw, crack or void. The user can select the
polarity or “phase” displayed. This is typically determined by first using RF view to
select the most optimal polarity “phase”, to fine tune the scopes settings. The RECT
view is commonly used as the primary “flaw detection” view.
BSCAN:
The Time Based B-Scan provides the user with a cross sectional view of
the material being tested. This mode is useful when there is concern regarding the
profile of the blind surface. This can also be a useful view when scanning for pits and
flaws.
Once the view has been selected according to the application requirements, the
Delay
and
Range
of the screen will potentially need to be adjusted, if the view has
been set to
RF
or
RECT
. Alternatively, if
BSCAN
was selected, the
B-Start
and
B-
Depth
settings will need to be adjusted. These settings serve the same purpose,
with only differences in terminology. The
Delay
the same as
B-Start
, and the
Range
is the same as
B-Depth
. Therefore, these items will be grouped together for the
duration of this manual, as follows:
Delay (B-Start)
and
Range (B-Depth)
. Use the
following steps to adjust these settings directly from the measurement screen as
follows:
Note:
The
Delay
(B-Start)
and
Range (B-Depth)
are also used to adjust the
parameters of
Scan Bar
.
Содержание DFX-7
Страница 35: ...Dakota Ultrasonics 34 Note Sets where the detection will occur on the negative or positive going echoes...
Страница 219: ...Dakota Ultrasonics 82 10 Finally press the MEAS key to return to the measurement screen and begin taking readings...
Страница 308: ...171 APPENDIX B SETUP LIBRARY Num Name Comment 1 Gn AGC Velocity 1 Enter Custom Name 2 3 4 5 6...
