910-269-EN, Rev. B, June 2011
Adjusting the Pulser/Receiver (Conventional UT Mode) 93
Manual
Used to manually set the PRF value.
To adjust the PRF value in Manual PRF Mode
1. Choose 1/5 > Pulser > PRF Mode = Manual.
2. Choose 1/5 > Pulser > PRF, and then vary the setting.
When needed, press [CHECK] to toggle between coarse and fine adjustment.
The EPOCH 1000 Series is a single-shot instrument. This means that the
instrument acquires, measures, and draws the complete A-scan with each pulse
rather than using multiple acquisitions to construct a full waveform. The
measurement rate in the EPOCH 1000 Series conventional ultrasound mode is
always equal to the PRF rate unless you are using a multiplexer.
4.4.2 Pulse Energy (Voltage)
The EPOCH 1000 Series conventional ultrasound mode can adjust the pulse energy
from 50
V to 475 V in increments of 25 V. With this flexibility, you can set the pulse
energy from to a minimum when you want to extend the battery life, or provide a
very high power pulser for the most difficult materials.
To adjust the pulser energy
Choose 1/5 > Pulser > Energy, and then vary the value. In the Energy adjustment,
coarse and fine steps are equal (25
V).
To maximize instrument battery life and transducer life, it is recommended that
you use lower energy settings when the application permits it. For most
applications, the energy setting does not need to exceed 200 V.
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