Dakota Ultrasonics PVX - Manual (Page 19)

PVX Precision Visual Thickness Gauge
15
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 55 for further info.
AGC: The PVX is equipped with an automatic gain control when operating in
interface-echo a nd echo-echo modes only. This is much like turning the volume up
or down on a stereo receiver. However, the PVX 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 55 for further
info.
Threshold: Enables the user to set the sensitivity level of the PVX. The amplitude
of the signal must reach and exceed the threshold level before a measurement is
detected. Refer to page 58 for further info.
Polarity: The PVX 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 76 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 78 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). Note: I-E or Interface echo mode is also a multiple echo mode that
uses two gates like E-E mode(echo-echo). Refer to page 23 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 61 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 (interface-echo) measurement modes.
Refer to page 65 for further info.