10.5 Pulser Power; Figure 10-6 Detection Of The First Or The Second Negative Peak - Olympus 45MG User Manual

DMTA-10022-01EN, Rev. C, January 2015

Figure 10-6 Detection of the first or the second negative peak

10.5 Pulser Power

The excitation pulse (main bang) voltage can be set to one of the following values:
60 V, 110 V, 150 V, and 200 V.
Higher voltages may provide greater penetration at the expense of a lower near-
surface resolution, especially in mode 1. Inversely, lower voltages may provide better
near-surface resolution at the expense of a lower penetration.
For most applications, the 110 V value provides the best signal-to-noise ratio for
returning echoes. The pulser power indicates the voltage used to excite the
transducer, and therefore affects the size of the initial pulse (see Figure 10-7 on
page 173), and the amount of energy transmitted into the material.
172 Chapter 10