Dakota Ultrasonics VX - Manual (Page 20)

Dakota Ultrasonics
16
Scan Mode
While the VX excels at making single point measurements, it is
sometimes desirable to examine a larger region to check for material
consistency. The VX includes a feature, called Scan Mode, which allows it
to do just that.
In normal operation, the VX performs and displays four measurements
every second, which is quite adequate for single measurements. In Scan
Mode, however, the gauge performs sixteen measurements every second,
but does not display them. While the transducer is in contact with the
material being measured, the VX is keeping track of the fastest velocity it
finds. The transducer may be "scrubbed" across a surface, and any brief
interruptions in the signal will be ignored. When the transducer loses
contact with the surface for more than a second, the VX will display the
fastest sound velocity it found.
When the VX is not in calibration mode, press the UP arrow key to turn
Scan Mode on and off. A brief message will appear in the display
confirming the operation. While scanning, the display will show a moving
series of dashes instead of a sound value.