Dakota Ultrasonics DFX-8 plus MANUAL1 - Manual (Page 95)

DFX-8 Series Ultrasonic Flaw Detectors
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Selecting the Damping
1) Press the MENU key once to activate the menu items tab. Press the MENU
key multiple times to tab right and the ESC key multiple times to tab left until
the PRB menu is highlighted and displaying the submenu items.
Alternatively, press the LEFT and RIGHT arrow keys multiple times
using the left button wheel.
2) Use the UP and DOWN arrow keys multiple times on the left button
wheel to scroll through the sub menu items until DAMPING is highlighted.
3) Use the LEFT and RIGHT arrow keys on the right button wheel to scroll
the DAMPING options.
4) Once the desired DAMPING is displayed, press the MEAS key to return to
the measurement screen.
11.4 Pulser Voltage
The DFX-8 has a 200 volt square wave pulser that can be adjusted for specific
applications and transducers. The Pulser Volt feature offers a 50 volt cut/boost
option to the user. The standard setting is 200 volts. This enables the DFX-8 to offer
greater penetration for difficult material types, or increased resolution on noisy
materials.
The DFX-8+ is equipped with a “Tone Burst” style pulser, and supplies a constant
amplitude pulse to the transducer for a set amount of time, which is adjustable. The
key advantage using this type of pulser is that the frequency of the generated pulse
can be tuned to the frequency of the transducer, the bursts can be