DMTA-10055-01EN, Rev. A, February 2015
Software Features and Options
235
2.
Adjust the gain in either coarse or fine increments, or use the
+6 dB
and
–6 dB
keys (P4 and P5 keys) to increase or decrease scanning gain.
3.
Press dB to access the
Gain
menu.
4.
Press
Scan dB
(P2 key) to toggle between the base (reference) gain and the
adjusted scanning gain.
5.
Choose
dB > Off
to turn scanning gain off completely.
Figure 11-9 on page 235 shows a Standard DAC setup with 3 dB of scanning gain
added.
Figure 11-9 Standard DAC with 3 dB scanning gain
When reference correction is active, the digital comparison between a captured
reflector and the DAC curve is accurate even with the scanning gain applied to the
inspection provided that the gated echo is not saturated. Figure 11-10 on page 236
shows the same setup as above but with
Reference Correction
active. Notice that the
scanning gain has been removed from the dB-to-curve measurement in location 5. The
instrument compares the echo height to the DAC curve, compensates for the added
scanning gain, and reports the true-amplitude comparison.
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...
