Dakota Ultrasonics MMX-7 User Manual

Page 18

Dakota Ultrasonics

AGC: The MMX -7 is equipped with an automatic gain control when operating in
echo-echo mode only. This is much like turning the volume up or down on a stereo
receiver. However, the MMX-7 will automatically control how much the volume is
turned up or down. Alternatively, the AGC can be manually controlled using the
same procedures as GAIN described above. Refer to page 50 for further info.
Measure Mode: Used to select the measurement mode for different application
requirements. The modes are P-E (pulse-echo) and E-E(echo -echo). Refer to page
22 for further info.

3.3 CAL – Menu

Units: Toggle between English or Metric units. The readout will change from inches
to millimeters.
Velocity: Function to calibrate the MMX-7 by setting the velocity to a known
material velocity. Refer to page 34 for further info.
One Point: Performs a single point calibration. This option allows the user to
automatically calculate the velocity by entering a known sample thickness. Refer to
page 36 for further info.
Two Point: Performs a two -point calibration. This option allows the user to
automatically calculate the velocity by entering a second known sample thickness.
Refer to page 37 for further info.
Material: Select the material velocity from a chart of basic material types, when a
known sample thickness, or material velocity cannot be obtained. Refer to page 40
for further info.

3.4 DISP (display) – Menu

View: Selectable BSCAN (cross section), and DIGITS (large digits) views. Refer to
page 42 for further info.
Backlight: Selectable OFF, ON, AUTO, or INVERT backlight option.

Contrast: Adjustable display contrast for variable light conditions.
B-ST: Provides the user the ability to change the start position of the B-SCAN view.
Refer to page 48 for further info.