Analog characteristics of ultrasonic flaw detectors are essential
for successfully solving today's inspection tasks.
With modern computerization, analog components may not always receive their
fair share of attention.
The article highlights some important transmitter and receiver elements,
e.g.,
pulser type, damping frequency, bandwidth, filter.
Some of the text relating to analogs in the new standard EN 12688-1
"Characterization and verification of ultrasonic examination - Part 1:
Instruments" is also reviewed.