Sensitivity test circuit s.p.l test circuit, Anechoic room, Voltmeter – BeStar BPU1440IFAH09-01 User Manual
Page 6: S.c.m, S.c.m u.s, Sp osc f.c, 30cm, Bestar electronics industry co.,ltd voltmeter, 30cm u.s
1
2
Voltmeter
D
G
F
E
H
Amp
3
S.C.M
S.C.M
U.S
4
OSC
5
SP
OSC
F.C
sensitivity test circuit
S.P.L test circuit
OSC. :Oscillator
F.C :Frequency Counter
U.S :Ultrasonic Sensor
S.C.M :Standard Cappacitor Microphone
Amp. :Ampifier
Anechoic Room
30cm
6
G
H
D
F
E
BPU1440IFAH09-01
~
Amp
Page:6 of 10
1
2
BPU1440IFAH09-01
Ultrasonic Sensor
A
B
C
RL
3
李红元
邹皓轩
F.C
Note
4
5
Drawn
Approved by:
OSC. :Oscillator
F.C :Frequency Counter
U.S :Ultrasonic Sensor
S.C.M :Standard Cappacitor Microphone
Amp. :Ampifier
SP :Tweeter
RL
: 3.9KΩ
Date:
Checked by:
Drawn by:
Anechoic Room
B
C
Date
Rev.
6
A
BESTAR ELECTRONICS INDUSTRY CO.,LTD
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U.S
DRG NO: BS/TEU01.307
倪雪晴
倪雪晴
2011.03.10
2011.03.10
Acous tics & Sensor