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
Summary of Contents for EPOCH 650
Page 12: ...DMTA 10055 01EN Rev A February 2015 List of Abbreviations xii...
Page 30: ...DMTA 10055 01EN Rev A February 2015 Introduction 18...
Page 54: ...DMTA 10055 01EN Rev A February 2015 Chapter 1 42...
Page 84: ...DMTA 10055 01EN Rev A February 2015 Chapter 3 72...
Page 126: ...DMTA 10055 01EN Rev A February 2015 Chapter 5 114...
Page 148: ...DMTA 10055 01EN Rev A February 2015 Chapter 7 136...
Page 154: ...DMTA 10055 01EN Rev A February 2015 Chapter 8 142...
Page 236: ...DMTA 10055 01EN Rev A February 2015 Chapter 10 224...
Page 332: ...DMTA 10055 01EN Rev A February 2015 Appendix B 320...
Page 342: ...DMTA 10055 01EN Rev A February 2015 Appendix C 330...
Page 346: ...DMTA 10055 01EN Rev A February 2015 Appendix D 334...
Page 362: ...DMTA 10055 01EN Rev A February 2015 Index 350...