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Dakota Ultrasonics
The MAX II is also 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
adjusted/optimized, a clean narrow band ultrasonic wave produced, and exceptional
output at a given voltage. Therefore, the output of a general square wave pulser at
400V is approximately 12dB less than a tuned 400V tone burst style pulser. The
options for the MAX II pulse width settings are; Spike, Thin, Wide, HV Spike, HV
Thin, HV Wide, TB 10MHz, TB 5MHz, TB 2MHz, and TB 1MHz. Depending on the
setting selected, the pulser voltage options will include the applicable settings/options
(i.e. if Thin is selected, the max output voltage option is 200V. However if HV Thin is
selected, the max output voltage option is 400V – HV or high voltage, etc.). Note:
the Pulser Voltage menu option is used in conjunction with the Pulse menu option.
Refer to the Pulse menu options to select the desired voltages intended. The
procedure to change the pulser voltage is outlined below:
For quick access and editing, refer to navigating the Hot Menus page 36.
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 TUNE menu is highlighted and displaying the submenu items.
Alternatively, press the
using the left button wheel.
2) Use the
wheel to scroll through the sub menu items until PULSER VOLTAGE is
highlighted.
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Changing the Pulser Voltage
LEFT and RIGHT arrow keys multiple times
UP and DOWN arrow keys multiple times using the left button
144
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