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Index
Numerics
1/1-Octave-band Centre Frequencies........................... 45
1/3 Octave-band Cente Frequencies ............................ 46
1/3 Octave-band Filters................................................. 16
A
About This Manual .......................................................... 1
Accessories................................................................... 17
Acoustic Frequency Responses.................................... 21
Air temperature ............................................................. 19
Analytical filter design ................................................... 45
Average I-weighted Sound Level .................................. 12
B
B*T Product................................................................... 13
B*T product ................................................................... 47
Base.............................................................................. 45
Battery Lifetime ............................................................. 50
BE 1077 .......................................................................... 1
BZ 5503 PC Software for Hand-held Analyzers.............. 2
BZ 7222 Sound Level Meter Software for Type 2250..... 2
BZ 7223 Frequency Analysis Software for Type 2250.... 2
C
cable arrangement ........................................................ 17
Capacitance .................................................................. 20
CCLD Input ................................................................... 49
Components Included with Type 2250............................ 5
Components Not Included with Type 2250 ..................... 5
Conformance Testing.................................................... 15
Current Measurement ................................................... 11
D
Descriptions .................................................................... 7
deviations...................................................................... 21
Diffuse-field Frequency Responses .............................. 24
Direct Input.................................................................... 49
Directional Response.................................................... 26
E
Elapsed Time ................................................................ 11
Electrical Frequency Responses................................... 20
Electrical Substitute for Microphones............................ 15
EMC Test Procedures ...................................................16
Emission ........................................................................17
Environmental Stabilisation Time ..................................48
Equivalent Continuous I-weighted Sound Level ............12
Equivalent Continuous Sound Level..............................12
Evaluator, Type 7820.......................................................2
Excessive condensation ................................................47
Expanded Uncertainties of Measurement......................20
Exponential Averaging...................................................43
Exponential averaging times..........................................43
exponential time constants ............................................10
Extended Dynamic Range Mode .....................................7
Extension cables............................................................20
External Power to Instrument ........................................50
F
F and S Time-weighted....................................................8
F and S time-weightings ..................................................8
Fast Time Constant .......................................................47
Fast Time-weighting ......................................................47
Free-field Frequency Responses............................22, 55
Frequency Analysis Software for Type 2250, BZ 7223 ...2
Frequency Response.....................................................20
Frequency Responses
Acoustic.....................................................................21
Free-field ...................................................................55
Frequency Weightings.....................................................8
Frequency Weightings According to IEC 61672 – 1........9
H
Hand-held Analyzer, Type 2250 ......................................2
Headphones Socket ......................................................49
Humidity.........................................................................48
I
I Time-weighted .............................................................10
I time-weighting..............................................................10
IEC 60651 Standard ........................................................8
IEC 61672 – 1 Standard ..................................................8
IEC 61672-1 (2002-05), Class 1, Group Z.......................1
Immunity as Sound Level Meter ....................................18
Immunity to Power and Radio-frequency Fields ............48
Impulse ..........................................................................10
Indicator Range .............................................................42
BE171211.book Page 113 Thursday, May 27, 2004 1:01 PM
- Technical 1
- Documentation 1
- Hand-held Analyzer Type 2250 2
- Safety Considerations 3
- Table of Contents 4
- Chapter 1 6
- 1.2 System Overview 7
- 1.3 Hardware Setup 8
- CHAPTER 1 10
- Chapter 2 12
- 2.4 Frequency Weightings 13
- 2.5 Measured Quantities 13
- Table 2.1 14
- Frequency weight 14
- IEC 61672 – 1, Ta 14
- Table 2.2 15
- Exponential time 15
- CHAPTER 2 16
- ∆t where: 17
- 2.5.4 Spectrum Measurements 18
- Chapter 3 20
- 3.6 EMC test procedures 21
- 3.6.4 Accessories 22
- Chapter 4 24
- 4.5 Microphone 25
- 4.6 Frequency Response 25
- CHAPTER 4 26
- 4.6.3 Low-frequency Responses 27
- 4.7 Directional Response 31
- Table A.25 35
- Table A.32 37
- Table A.34 to Table A.36 39
- Table A.44 to Table A.46 42
- 4.8 Self-generated Noise 44
- 4.9 Measuring Range 46
- 4.9.4 Indicator Range 47
- 4.9.5 Linearity Range 47
- 4.9.6 Pulse Range 47
- 4.9.7 Linear Operating Range 47
- 4.10 Detectors 48
- 4.10.2 Linear Averaging 49
- 4.10.3 Peak 49
- 4.11 Spectrum Analysis 50
- 4.11.3 Linear Operating Range 51
- 4.11.4 Measurement Range 52
- Fig.4.31 53
- The most sensitive 53
- Table 4.13 53
- Magnetic Fields 53
- 4.13.2 Trigger Socket 54
- 4.14.1 Output Socket 54
- 4.14.2 Headphones Socket 54
- 4.15 Power Supply 55
- 4.16 Warm-up Time 55
- 4.17 Real-time Clock 55
- Appendix A 58
- angle of incidence to 65
- ‘UA 1404’ 69
- A.4 Directional Responses 71
- APPENDIX A 100
- Instruction Manual 101
- 500 Hz – 3550 Hz 105
- 4000 Hz – 10600 Hz 106
- 11200 Hz – 20000 Hz 107
- Appendix B 110
- APPENDIX B 112
- B.3 Irrelevant Topics 116
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