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5 Operation
Distance-amplitude curve according to JIS Z3060-2002 (JISDAC)
5-110
Issue 2 (12/2013)
USM 36
Change in the probe delay
Generally, a change in the probe delay automatically
also affects the shape of the sound field. This means
that a new recording of the reference echo would be the-
oretically required. However, minor changes in the de-
lay line, typically occurring due to the wear of the delay
line, have no noticeable effect on the programmed dis-
tance laws.
ATTENTION
A recorded DAC curve no longer applies if
the probe delay changes to a larger extent,
e.g. caused by adding or removing a delay
line after a DAC curve has been recorded.
The same applies to immersion testing: The
DAC curve must be recorded after setting up
the final water delay line.
Failure to do so may lead to evaluation er-
rors.
Automatic variation of the measuring point in TOF
mode
An echo amplitude evaluation is normally carried out at
the echo peak of the signal under examination because
this is the only way of ensuring that the displayed echo
amplitude and the sound path (projection distance,
depth position) always belong to the highest echo in the
gate.
Note
The USM 36 checks the measuring point set-
ting in TOF mode before processing any ref-
erence amplitudes. If
PEAK
is not set as
measuring point, the instrument will automat-
ically switch to
PEAK
. In this case, a note is
displayed at the bottom edge of the display
screen.
Содержание 37 400
Страница 1: ...USM 36 Technical Reference and Operating Manual ...
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Страница 21: ...USM 36 Issue 2 12 2013 1 1 Introduction 1 ...
Страница 35: ...USM 36 Issue 2 12 2013 2 1 Standard package and accessories 2 ...
Страница 40: ...2 Standard package and accessories Recommended accessories 2 6 Issue 2 12 2013 USM 36 ...
Страница 41: ...USM 36 Issue 2 12 2013 3 1 Initial start up 3 ...
Страница 53: ...USM 36 Issue 2 12 2013 4 1 Principles of operation 4 ...
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Страница 77: ...USM 36 Issue 2 12 2013 5 1 Operation 5 ...
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Страница 213: ...USM 36 Issue 2 12 2013 6 1 Documentation 6 ...
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Страница 243: ...USM 36 Issue 2 12 2013 7 1 Maintenance and care 7 ...
Страница 249: ...USM 36 Issue 2 12 2013 8 1 Interfaces and Peripherals 8 ...
Страница 253: ...USM 36 Issue 2 12 2013 9 1 Appendix 9 ...
Страница 268: ...9 16 Issue 2 12 2013 USM 36 9 4 Recycling directives Overview 5 4 4 5 6 1 7 3 2 3 ...
Страница 270: ...9 Appendix Recycling directives 9 18 Issue 2 12 2013 USM 36 Materials to be disposed of separately 2 1 ...
Страница 272: ...9 Appendix Recycling directives 9 20 Issue 2 12 2013 USM 36 Other materials and components 1 1 1 5 4 3 2 ...
Страница 273: ...Recycling directives 9 Appendix USM 36 Issue 2 12 2013 9 21 6 6 6 ...
Страница 274: ...9 Appendix Recycling directives 9 22 Issue 2 12 2013 USM 36 7 7 8 6 8 ...
Страница 279: ...USM 36 Issue 2 12 2013 10 1 Specifications 10 ...
Страница 289: ...USM 36 Issue 2 12 2013 11 1 Index 11 ...
Страница 305: ...11 Index USM 36 Issue 2 12 2013 11 17 Z Zoom 4 3 ...
Страница 306: ...11 Index 11 18 Issue 2 12 2013 USM 36 ...