Recording A Distance-Amplitude Curve - Epson USN 52R Operating Manual

Operation
5.5 Recording a Distance-
Amplitude Curve
Attention:
Recording of a new curve will delete a curve that possi-
bly already exists. If necessary, make sure that the old
curve is stored in a free data set before you start re-
cording a new curve!
Use C to go to the function group DAC.
– Press the JC keys simultaneously to switch the
DAC/TCG function to the record mode: DAC/TCG =
REC.
– The DAC ECHO function is at 0 as no echo has been
recorded yet.
– Couple the probe to the reference block and peak the
first reference echo. Bring the echo with Gain to
about 80% screen height.
– Move the gate onto the corresponding echo with
a-START. The gate threshold must be adjusted so
that the echo exceeds it.
5-28
– Switch on DAC ECHO now:
All reference echo data (sound path, amplitude and
gain setting) are stored in the instrument, and the
DAC ECHO function shows the number 1.
– Peak the next reference cho.
– Position the gate onto the echo and readjust the gain
if required until the echo exceeds the threshold.
– Switch on the DAC ECHO:
The data of the second echo are stored -
DAC ECHO = 2.
You will now already recognize that there is a curve
between the amplitude of the first echo and the gain-
corrected amplitude of the second echo.
Issue 05, 02/00

Recording a Distance-Amplitude Curve

Krautkramer USN 52R/USN 52L