DMTA-10055-01EN, Rev. A, February 2015
Gates
131
Gate tracking maintains a constant separation between the position of the indication
in the first gate and the start position of the second gate. With this dynamic mobility,
the tracking gate is always positioned where you want to measure other indications.
When gate tracking is active, the start position value of the tracking gate (the second
gate involved in the measurement) defines the separation between the gates, not a
fixed start position.
To make echo-to-echo measurements with gate 1 and gate 2
1. Activate both gates by selecting Gate 1 > Status = On and Gate 2 > Status = On.
2. As shown in the example of Figure 7-7 on page 131, position gate 1 over the first
echo to detect, and then position gate 2 over the second echo to detect.
The Gate 2 > Start position defines the separation between the position of the
indication in gate 1 and the start of gate 2.
Figure 7-7 Echo-to-echo measurement example
3. Set gate 2 as the tracking gate by selecting Gate Setup > G2 Tracks = On.
The echo-to-echo mode flag ( )appears on the right side of the display,
indicating that the instrument is measuring the distance between positions of the
indications in gate 1 and gate 2.
Echo-to-echo flag
Measurement of
distance between
indications in the
2 gates
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