Olympus 38DL PLUS User Manual page 140

DMTA-10004-01EN, Rev. D, November 2016
3. In MEASUREMENT MODE, select what the instrument measures and displays
among the following options:
— THICKNESS: the thickness of the inspected part
— VELOCIMETER: the sound velocity in the material of the inspected part
— TIME OF FLIGHT: the round trip time-of-flight (TOF) of the sound in the
inspected part
4. In UNIT TYPE, select between the INCH (English) or MILLIMETER (metric)
units.
Time-of-flight measurements are always expressed in microseconds.
5. In RESOLUTION, select between STANDARD, LOW, or HIGH (see "Changing
the Thickness Resolution" on page 61 for details).
6. In MIN/MAX, select to activate either the MIN (minimum), MAX (maximum), or
BOTH modes (see "Using the Minimum, Maximum, or Min/Max Thickness
Mode" on page 115 for details).
7. In HOLD BLANK, configure the instrument to either continue to show (HOLD)
or not hold (BLANK) the last measured thickness and waveform while a loss-of-
signal (LOS) occurs.
NOTE
The MIN/MAX and HOLD BLANK functions are mutually exclusive. You must set
MIN/MAX to OFF to be able to change the HOLD BLANK function. Similarly, you
must set HOLD BLANK to BLANK to be able to change the MIN/MAX function.
8. In MEASURE RATE, adjust the measurement update rate (see "Adjusting the
Measurement Update Rate" on page 60 for details).
9. Set ID OVERWRITE PROT to ON if you want to see a confirmation message in
the help bar when attempting to save a measurement reading in an ID that
already contains a value (see "Setting the ID Overwrite Protection" on page 196
for details).
10. For single element transducers only, set QUICK SETUP RECALL to ON to
activate the quick recall of the first four custom setups using the combination of
[2nd F] and the arrow keys (see "Quickly Recalling a Custom Setup for Single
Element Transducers" on page 240 for details).
11. For single element transducers only, set AGC to ON to set the automatic gain
control (AGC) function to automatically bring all measured back-wall echoes to
the same amplitude.
128 Chapter 9