BRUEL & KJAER 2240 - default chapter; Table of Contents

Table of Contents
CHAPTER 1
Introduction.......................................................................................................................................... 1
1.1 About This Manual..................................................................................................................................... 1
1.2 Topics Covered in User Guide BE 1695 and Non-applicable Topics ........................................................ 2
CHAPTER 2
Hardware Setup ................................................................................................................................... 5
2.1 Measuring at Low Static Pressure............................................................................................................. 5
2.2 Frequency Weightings............................................................................................................................... 5
2.3 Measured Quantities ................................................................................................................................. 7
CHAPTER 3
Conformance Testing........................................................................................................................ 11
3.1 Introduction.............................................................................................................................................. 11
3.2 Selecting C-weighting.............................................................................................................................. 11
3.3 Mounting for Acoustical Tests ................................................................................................................. 11
3.4 Mounting for Mechanical Vibrations Tests............................................................................................... 11
3.5 Electrical Substitute for Microphones ...................................................................................................... 11
3.6 EMC Test Procedures ............................................................................................................................. 12
CHAPTER 4
Specifications .................................................................................................................................... 15
4.1 Specifications .......................................................................................................................................... 15
4.2 Standards ................................................................................................................................................ 15
4.3 Reference Environmental Conditions ...................................................................................................... 15
4.4 Reference Conditions for Acoustic Calibration ........................................................................................ 15
4.5 Microphone.............................................................................................................................................. 16
4.6 Frequency Response .............................................................................................................................. 16
4.7 Directional Response .............................................................................................................................. 17
4.8 Self-generated Noise............................................................................................................................... 17
4.9 Measuring Range .................................................................................................................................... 18
4.10 Detectors ................................................................................................................................................. 20
4.11 Influence from the Operating Environment.............................................................................................. 21
4.12 Electrical Input to Type 2240 ................................................................................................................... 21
4.13 Electrical Output from Type 2240 ............................................................................................................ 21
4.14 Power Supply .......................................................................................................................................... 22
4.15 Warm-up Time......................................................................................................................................... 22
4.16 CE-mark and C-Tick mark Compliance ................................................................................................... 22
APPENDIX A
Tables ................................................................................................................................................. 23
A.1 Electrical Frequency Responses ............................................................................................................. 23
A.2 Free-field Frequency Response .............................................................................................................. 25
A.3 Diffuse-field Frequency Response .......................................................................................................... 27
APPENDIX B
Indexes ............................................................................................................................................... 29
B.1 Indexes .................................................................................................................................................... 29
B.2 Standard Cross-indexes .......................................................................................................................... 29
B.3 Irrelevant Topics ...................................................................................................................................... 36
INDEX ........................................................................................................................................................................... 37