Table of Contents
Advertisement
SD5/SD6 Ultrasonic TableTop Doppler User Manual
A3.4 Overall Sensitivity of SD6 (3MHz Wireless Probe)
Diameter of
Target
Distance
Reflection
Loss A(d) ∑B (T: ultrasonic attenuation
Reflector
(d)(mm)
(mm)
50
1.58
75
A=44.5dB@
3MHz
100
200
50
75
2.38
A=42.0dB@
3MHz
100
200
Doppler Frequency (Hz)
Two-way Attenuation
phantom No. B
:dB)
a
T
6#
3#
-
44.5
B
43.6
13.5
-
a
T
6#
3#
-
44.5
B
43.6
13.5
-
a
T
6#
2#
-
44.5
B
43.6
9.6
-
a
T
6#
1#
-
44.5
B
43.6
6.5
-
a
T
6#
3#
-
42.0
B
43.6
13.5
-
a
T
6#
2#
-
42.0
B
43.6
9.6
-
a
T
6#
2#
-
42.0
B
43.6
9.6
-
a
T
6#
1#
-
44.5
B
43.6
6.5
-
a
500
B=∑B
+B
a
w
B
B
w
(dB)
(dB)
-
0
57.1
-
-
0
57.1
-
-
0
53.2
-
-
0
50.1
-
-
0
57.1
-
-
0
53.2
-
-
0
53.2
-
-
0
50.1
-
- 40 -
⎛
=
⎜ ⎜
V
(r.m.s)
V
(r.m.s)
C
20
log
S
n
10
⎝
mV
mV
dB
155.7
78.56
5.94
154.9
78.30
5.93
152.1
77.94
5.81
151.2
78.42
5.70
153.5
78.46
5.83
153.2
78.72
5.78
150.8
78.02
5.72
155.3
78.44
5.93
Velocity of Target
(cm/s)
Overall Sensitivity
(
)
⎞
Overall Sensitivity
V
r
.
m
. .
s
⎟ ⎟
s
(
)
.
. .
⎠
V
r
m
s
(S=A(d)+B+C)
n
dB
107.5
107.5
103.5
100.3
104.9
101.0
100.9
98.0
12.5
Advertisement
Table of Contents
