Minimum Depth Alarm With Gate Tracking; Figure 7-9 Minimum Depth Alarm Marker - Olympus EPOCH 650 User Manual

Minimum depth alarm marker
To set a minimum depth alarm
1. Activate the gate by selecting Gate<n> > Status = On.
2. Position the gate to cover the desired area.
3. Select Gate<n> > Alarm = Min Depth
4. Choose Gate<n> > Min Depth, and then adjust the desired minimum value. The
minimum depth alarm value must be greater than the gate start value and less
than the gate width value.
The Minimum Depth Alarm is not available when certain special functions
are enabled.
7.8.4

Minimum Depth Alarm with Gate Tracking

The EPOCH 650 ultrasonic flaw detector can use the minimum-depth alarm when
making echo-to-echo thickness measurements with gate tracking. When gate tracking
is active, the tracking gate moves side-to-side, tracking the position of the echo in the
non-tracking (first) gate. With gate tracking active, the Min Depth alarm threshold is
relative to the position of the echo in the non-tracking gate (first gate).
To set up a minimum depth alarm with gate tracking, follow the steps described in
"Minimum Depth Alarm with a Single Gate" on page 134.

Figure 7-9 Minimum depth alarm marker

DMTA-10055-01EN, Rev. A, February 2015
Gates 135