Dakota Ultrasonics MVX User Manual

Page 20

Dakota Ultrasonics

3.5 TUNE – Menu

Gain: Increases or decreases the overall amplitude of the signal. Much like turning
the volume up or down on a stereo receiver. Refer to page 57 for further info.
AGC: The MVX 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 MVX 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 57 for further info.
Threshold: Enables the user to set the sensitivity level of the MVX. The amplitude
of the signal must reach and exceed the threshold level before a measurement is
detected. Refer to page 60 for further info.
Polarity: The MVX operates on a zero crossing detection principle. This feature
toggles which stroke of the cycle the crossing detection uses, either positive or
negative. Refer to page 78 for further info.
Rect Waveform: This option provides the user an outlined or filled view option when
the display setting is in RECT (rectified) wave mode only. Refer to page 80 for
further info.

3.6 GATE – Menu

Measure Mode: Used to select the measurement mode for different application
requirements. The modes are P-E (pulse-echo), P-E GT(pulse-echo w/gate), and E-
E(echo-echo). Refer to page 24 for further info.
Gate 1: Gates allow the user to view areas or sections of the waveform and ignore
others. Gate 1 can be used in both pulse-echo and echo-echo measurement modes.
Refer to page 63 for further info.
Gate 2: Gates allow the user to view areas or sections of the waveform and ignore
others. Gate 2 is only used in echo-echo measurement mode. Refer to page 67 for
further info.