Olympus EPOCH 650 User Manual page 341

Term
Transmitter
Ultrasonic
V-path
Wavelength
Zero offset
Table 32 Glossary (continued)
Circuit of the flaw detector that sends the initial pulse
voltage to the transducer.
Frequencies above the human audible range
(above 20 kHz).
The angular distance sound travels, measured from the
top surface of the material to the bottom, and reflecting
back up to the top surface.
The distance between like points on successive wave
fronts; such as the distance between any two successive
particles of the oscillating medium that are in the same
phase. It is denoted by the Greek letter λ (lambda).
A time offset between the moment the excitation pulse is
generated and the point at which the screen display and
measurement begins, typically used to subtract transit
time through a wedge, delay line, or wear plate from a
depth or distance measurement.
DMTA-10055-01EN, Rev. A, February 2015
Definition
Glossary 329