DMTA-10055-01EN, Rev. A, February 2015
Chapter 11
238
11.2.4
JIS DAC
The Japanese Industrial Standard (JIS) DAC mode meets the requirements of JIS
Z3060. The JIS DAC curve setup is identical to the standard DAC/TCG setup.
However, any of the six curves can be used to trip the alarm when in the JIS DAC
mode. Additionally, you can set the alarm to positive or negative.
To select the curve to be used as the alarm reference level
1.
Activate the JIS DAC and then choose
DAC/TCG > Next DAC
.
The selected curve appears as a double thickness line.
2.
Activate an alarm and set it to either a positive or negative threshold detection.
11.2.5
Custom DAC Curves
The DAC/TCG software option for the EPOCH 650 ultrasonic flaw detector features a
DAC curve setup that allows you to define up to six additional reference curves from
the primary curve at varying levels from –24 dB to +24 dB. The Custom DAC Curves
option is ideal for unique sizing inspections and procedure development. Custom
DAC Curves also allow the option of either a straight-line connection or a curved,
polynomial connection of each point on the DAC curve to meet various international
or customer-specific requirements.
To activate and set up the customized curves
1.
Open the
DAC/TCG
setup page by choosing
DAC/TCG > Setup
.
2.
Press
Custom
(P5 key) to set the
DAC/TCG
Mode
to custom.
3.
Select a
Curve Type
of
Curve
or
Straight
(polynomial or straight-line segments).
4.
Select the
No Of Curves
to be used in addition to the main curve (see Figure 11-12
5.
For each warning curve, choose
Curve
<
1–6
>
dB
, and set the value compared to
the main curve.
6.
Press
to return to the live screen to begin capturing DAC points.
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...
