DMTA-10040-01EN, Rev. E, February 2018
Chapter 5
140
To fine-tune the instrument settings
1.
If you are using a very low frequency probe (typically below 500 Hz), decrease
the low-pass setting, which can sometimes help to obtain cleaner signals.
Any low-pass value is acceptable.
2.
Depending on your requirements, set the alarm box parameters, horn, or external
horn (louder). For more details about alarms, see “Alarm Menus” on page 292.
3.
Depending on your requirements, set the display erase or persistence values to
automatically refresh the screen.
For more details about screen erase options, see “
PERSIST (variable persistence)
The list of all parameters is shown in Figure 5-28 on page 140.
Figure 5
‑
28 The list of all parameters
With this application, the results are better and interpretation much easier when the
signal from the cracked fastener is oriented at 90° with respect to the lift-off signal
from the good fastener. Using the proper frequency greatly improves interpretation of
the results. Figure 5-29 on page 141 shows examples of calibrations performed with
frequencies that were too low (left) and too high (right).
NOTE
Summary of Contents for nortec 600
Page 8: ...DMTA 10040 01EN Rev E February 2018 Table of Contents viii...
Page 16: ...DMTA 10040 01EN Rev E February 2018 Labels and Symbols 6...
Page 30: ...DMTA 10040 01EN Rev E February 2018 Introduction 20...
Page 58: ...DMTA 10040 01EN Rev E February 2018 Chapter 1 48...
Page 71: ...DMTA 10040 01EN Rev E February 2018 Software User Interface 61 Press the Return key to exit...
Page 72: ...DMTA 10040 01EN Rev E February 2018 Chapter 2 62...
Page 342: ...DMTA 10040 01EN Rev E February 2018 Chapter 7 332...
Page 356: ...DMTA 10040 01EN Rev E February 2018 Appendix B 346...
Page 366: ...DMTA 10040 01EN Rev E February 2018 List of Figures 356...
Page 368: ...DMTA 10040 01EN Rev E February 2018 List of Tables 358...
