S.p.l test circuit, Test circuit, Direcivity in overall sensitivity – BeStar BPU1448IFAH09 User Manual
Page 5: Anechoic room, Bestar electronics industry co.,ltd, Att e nu a ti o n (db), Osc f.c s.c.m, Voltmeter amp 90 ° 60, Ultrasonic sensor

C
OSC. :Oscillator
F.C :Frequency Counter
U.S :Ultrasonic Sensor
S.C.M :Standard Cappacitor Microphone
Amp. :Ampifier
Rev.
A
A
B
Drawn by:
BESTAR ELECTRONICS INDUSTRY CO.,LTD
耿 亚
2009.03.11
Drawn
Date
6
5
Note
Approved by:
Checked by:
4
Date:
DRG NO: BS/TEU01.303B
3
2
30
°
Direcivity in Overall Sensitivity
S.P.L test circuit
-15
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(dB)
6.Test Circuit
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S.C.M
Anechoic Room
90
°
BPU1448IFAH09
G
H
60
°
5
6
-5
-10
0
°
30
°
4
Voltmeter
Amp
90
°
60
°
2
3
Vertical
C
BPU1448IFAH09
Ultrasonic Sensor
A
Page:5 of 10
1
B
D
F
E
1
G
H
Horizontal
Acous tics & Sensor
2010.12.15
B
倪雪晴
2010.12.15
李红元
邹皓轩
倪雪晴
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