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BE
1712
−
11
May 2004
Hand-held Analyzer Type 2250
with
2250 Sound Level Meter Sof
tware BZ
7222
and
2250 Frequency Analysis Sof
tware BZ
7223
From Serial Number 2
435
900
Instruction Manual
BE171211.book Page i Thur
sday, May 27,
2004 1:01 PM
1
2
3
4
5
6
7
...
121
122
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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