Sensitivity test circuit s.p.l test circuit, Anechoic room, Bestar electronics industry co.,ltd – BeStar BPU1840IFAH12 User Manual
Page 6: Voltmeter amp s.c.m s.c.m u.s osc sp osc f.c, 30cm, Voltmeter, 30cm u.s
07.09.25
05.08.20
BESTAR ELECTRONICS INDUSTRY CO.,LTD
6
Rev.
A
B
Date
A
B
Note
5
Drawn
邵 凯
耿 亚
4
Checked by:
Drawn by:
Approved by:
Date:
Page:06 of 10
DRG NO: BS/TEU01. 334C
BPU1840IFAH12
3
2
1
Ultrasonic Sensor
A
B
T
h
is
p
ri
n
t
a
n
d
i
n
fo
rm
a
tio
n
t
he
re
i
n
a
re
p
ro
p
ri
e
ta
ry
t
o
B
e
s
ta
r
E
le
c
tr
o
n
ics
I
ndu
s
tr
y
C
o
.,
L
td.
a
nd
s
h
a
ll
no
t
b
e
u
s
ed
i
n
w
h
o
le
o
r
in
pa
rt
w
ith
ou
t
it
s
w
ri
tt
en
c
on
tent
C
D
E
BPU1840IFAH12
G
F
H
C
D
E
G
F
H
6
5
4
3
2
1
Acous tics & Sensor
倪雪晴
2011.07.12
李红元
邹皓轩
2011.07.12
C
倪雪晴
Voltmeter
Amp
S.C.M
S.C.M
U.S
OSC
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
～
Amp
RL
F.C
OSC. :Oscillator
F.C :Frequency Counter
U.S :Ultrasonic Sensor
S.C.M :Standard Cappacitor Microphone
Amp. :Ampifier
SP :Tweeter
RL
: 3.9KΩ
Anechoic Room
Voltmeter
～
30cm
U.S