Olympus EPOCH 6LT, User Interface Manual

Page: 93 / 232

DMTA-10084-01EN, Rev. 2, November 2018
Gates 83
Figure 7-9 Gate tick marks indicating alarm threshold type
To set a threshold alarm
1. Activate the gate in the Gate1 or Gate2 dialog box (see “Navigating Dialog Boxes
and Setup Pages” on page 19 for details on using the dialog boxes).
2. Use the G(1 or 2) Start , Width , or Level parameters to position the gate to cover
the desired area.
3. Select G(1 or 2) Alarm , and then select either the Positive or Negative threshold
alarm condition.
7.9.2 Minimum Depth Alarm
The minimum depth alarm is triggered whenever the current thickness measurement
reading falls below an operator-defined level. The minimum depth alarm can be used
either with a single gate or in echo-to-echo measurement mode.
7.9.2.1 Minimum Depth Alarm with a Single Gate
When the minimum depth alarm is activated, a marker appears on the gate to visually
indicate the current setting (see Figure 7-10 on page 84). Any indication that exceeds
the gate threshold to the left of the marker triggers the alarm.
Off
Positive
Negative