Dakota MAX II, Operation Manual

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Dakota Ultrasonics
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12.2 Display View Options
A key feature of the MAX II is the versatility of the display views available to the user.
The waveform views are a graphical representation of the actual sound reflections
traveling through a fastener and returning back to the transducer. The waveform
display shows the amplitude of the signal received on the vertical (Y) axis and time
(displayed in terms of length) on the horizontal (X) axis. The two waveform display
options are
RF (Full) wave, and RECT (rectified) half wave either positive or negative.
These waveform options give the user the ability to view the actual waveform and
point of detection. In this view option the user has better control over where the
MAX
II is detecting, selecting the proper phase of the signal, and adjusting the gate and
threshold (sensitivity) to eliminate noise or to force a specific detection point.
The RF waveform view is recommended when initially setting up the MAX II for an
application. The user can consider either a full RF wave or split screen RF option.
This display view gives the user the ability to view the entire waveform, both positive
and negative cycles, to determine the appropriate phase of the signal for
measurement. The
Large Digits display view is a general digital display of the
quantity selected. It’s a nice easy viewing option that is typically used following setup
of the initial application. The digits view is also equipped with a limits bar that is only
displayed when the alarm feature has been activated. The alarm limits are displayed
on the screen to give the user a visual idea of where they’re at throughout the
fastening process. The alarm lights and beeper also work in conjunction with the
alarm limits and will display red until the lower limit is reached. Once the bolt stretch
is within the limits, the beeper will sound and the green light displayed.
RF (Full Screen) RF (Split Screen)