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BRUEL & KJAER
Microphone
4189
BRUEL & KJAER 4189 User Manual
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Br
ü
el
&
Kj
ær
B
K
BA
5105
–
12
T
ec
hnical
Documentation
WO
RLD H
E
ADQUARTE
RS:
D
K-28
50
Næ
rum
• D
enma
r
k
•
T
elep
hone:
+
45
42
80
0
5
00
•
T
elex:
373
16
br
uka
dk
• Fax:
+45
42
80
14
0
5
•
e-mai
l: inf
o@bk.
dk •
Internet:
htt
p
://w
ww.
bk.dk
Micr
op
ho
ne Ha
nd
bo
ok
F
or the F
alcon™ Range
of Microphon
e
Products
2
Table of Contents
Default Chapter
4
Table of Contents
4
1 Introduction
8
About the Microphone Handbook
9
About the Falcon™ Range of Microphone Products
9
The Microphones
9
The Preamplifiers
15
2 Prepolarized Free-Field 1 / 2 " Microphone Type 4188
16
Introduction
17
Sensitivity
19
Frequency Response
20
Directional Characteristics
28
Dynamic Range
31
Equivalent Volume and Calibrator Load Volume
34
Capacitance
35
Polarization Voltage
35
Leakage Resistance
36
Stability
36
Effect of Temperature
37
Effect of Ambient Pressure
40
Effect of Humidity
41
Effect of Vibration
42
3 Prepolarized Free-Field
42
Sensitivity
43
Frequency Response
43
Dynamic Range
43
Capacitance
43
Stability
43
Effect of Temperature
67
Effect of Ambient Pressure
70
Effect of Humidity
71
Effect of Vibration
72
Effect of Magnetic Field
72
Electromagnetic Compatibility
72
Specifications Overview
73
Ordering Information
73
4 Free-Field 1 / 2 " Microphone Type 4190
76
Introduction
77
Sensitivity
80
Frequency Response
81
Directional Characteristics
88
Dynamic Range
89
Equivalent Volume and Calibrator Load Volume
92
Capacitance
94
Polarization Voltage
94
Leakage Resistance
96
Stability
96
Effect of Temperature
97
Effect of Ambient Pressure
100
Electromagnetic Compatibility
103
5 Free-Field
103
Electromagnetic Compatibility
133
Specifications Overview
133
Ordering Information
133
6 Pressure-Field 1 / 2 " Microphone Type 4192
136
Introduction
137
Sensitivity
140
Frequency Response
141
Directional Characteristics
148
Dynamic Range
149
Equivalent Volume and Calibrator Load Volume
152
Capacitance
154
Polarization Voltage
154
Leakage Resistance
156
Stability
156
Effect of Temperature
157
Effect of Ambient Pressure
160
Effect of Humidity
162
Effect of Vibration
162
Electromagnetic Compatibility
163
7 Low-Frequency Pressure-Field
166
8 / " Microphone Preamplifier Type 2669
167
Introduction
167
Frequency Response
172
Dynamic Range
181
Effect of Temperature
191
Effect of Magnetic Fields
206
Electromagnetic Compatibility (EMC)
206
Brüel & Kjær's Patented Charge-Injection Calibration Technique
207
Specifications Overview
208
Ordering Information
208
9 Accessories
210
Accessories Available
211
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BRUEL & KJAER 4189 Specifications
General
Sensitivity
50 mV/Pa
Polarization Voltage
0 V
Diameter
12.7 mm (1/2 inch)
Output Impedance
50 ohms
Humidity Range
0 to 90 %RH
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