Dakota Ultrasonics
90
8) Once the desired
PRF
is displayed, press the
MEAS
key to return to the
measurement screen.
10.16 Damping
The
DFX-7
has an adjustable damping feature, enabling the user to select from a
variety of settings according the transducer frequency and overall output. The range
of the damping feature is 50-1500 ohms. The available steps are 50, 75, 100, 300,
600 and 1500 ohms. Lower frequency transducers require less damping because
they typically have higher impedance and distort. The reverse is true for higher
frequency transducers. Nevertheless, trial and error with this feature will enable you
to find the optimal signal response and setting for your transducer. The procedure to
change the
DAMPING
is outlined below:
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.
2) Use the
UP
and
DOWN
arrow keys to scroll through the sub menu items
until
DAMPING
is highlighted.
3) Use the
LEFT
and
RIGHT
arrow keys to scroll the
DAMPING
options.
