Dakota Ultrasonics DFX-7 plus MANUAL1 - Manual (Page 103)

DFX-7 Ultrasonic Flaw Detector
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11.13 Detect Mark
Another look and feel option of the DFX-7 is the DETECT MARK feature. The detect
mark give the user the option to select: none, line, dots, or box. Depending on the
select made, an indication will be displayed on the waveform, showing where the
detection is occurring. It should be noted that the “box” option will only be visible in
RF view. The following screenshots illustrate the above selection options:
None Line
Dots Box
11.14 Filters (Wide & Narrow Bands)
There are two versions of the DFX-7 series: DFX-7 and DFX-7+. The DFX-7 is a
wide band only gauge, which includes a single wide band filter with a range of
1.8MHz to 19MHz. The DFX-7+ includes the same wide band filter, but also includes
a few narrow band filter options at 2MHz, 5MHz and 10MHz. The wide band option
is responsive to all signals within the given frequency range. However, narrow band
filters eliminate signals outside of the target filter frequency, and focus on the output
of the transducer at the specified frequency. The procedure to change the
DAMPING is outlined below:
Selecting the Damping