DMTA-10084-01EN, Rev. 2, November 2018
Gates
81
To operate in time-of-flight mode
1. Open the setup menu, and then select the Settings icon ( ). See “Setup Mode”
on page 17 for details on using the setup menu.
2. On the Settings menu, select the Meas Setup icon ( ).
3. On the Measurement Setup page, change the Units value to µs.
4. Press the Shift, Tab key sequence to return to the live A-scan display.
In time-of-flight mode, all distance measurements are displayed in microsecond
values instead of inches or millimeters, as indicated above the measurement
reading boxes (see Figure 7-8 on page 81).
Figure 7-8 Time-of-flight measurement
7.8 Zooming in on a Gate
The EPOCH 6LT can quickly zoom in the screen range to provide fine resolution of a
particular inspection zone. When the zoom is activated, the instrument automatically
brings the point that corresponds to the gate start to the left side of the screen and
adjusts the displayed range to match the gate width. The new range equals the normal
gate width. The lowest achievable value of the expanded range is equivalent to the
minimum range of the instrument at the current material-velocity setting. The zoom
flag ( )appears on the right side of the display.
To zoom in on a gate
The zoom function can only be active for one gate at a time.
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