EDAN SD6 - A4.2 Overall Sensitivity of SD5 (3 Mhz Wired Probe)

SD5/SD6 Ultrasonic TableTop Doppler User Manual Overall Sensitivity
- 44 -
A4.2 Overall Sensitivity of SD5 (3MHz Wired Probe)
Diameter of
Target
Reflector
(mm)
Distance
(d)(mm)
Reflection
Loss A(d)
Two-way Attenuation
B=∑B
a
+B
w
V
S
(r.m.
s)
mV
V
n
(r.m.
s)
mV
(
)
( )








=
...
...
log20
10
smrV
smrV
C
n
s
dB
Overall Sensitivity
(S=A(d)+B+C)
dB
∑B (T: ultrasonic attenuation
phantom No. B
a
:dB)
B
w
(dB)
B
(dB)
1.58
A=44.5dB@
3MHz
50 40.9
T
6#5#3#
0 79.4 64.45 31.07 6.34 126.64
B
a
79.4
75 44.4
T
6#5#3#
0 79.4 60.2 29.59 6.17 129.97
B
a
79.4
100 46.9
T
6#4#1#2#
0 77.7 69.53 29.58 7.42 132.02
B
a
77.7
200 52.9
T
6#4#1#
0 68.1 59.84 29.52 6.14 127.14
B
a
68.1
2.38
A=42.0dB@
3MHz
50 39.0
T
6#5#2#1#
0 82.0 61.84 30.32 6.19 127.19
B
a
82.0
75 42.5
T
6#4#3#1#
0 81.6 60.0 30.4 6.01 130.11
B
a
81.6
100 45.0
T
6#4#3#
0 75.1 69.53 30.75 7.09 127.19
B
a
75.1
200 51.0
T
6#4#1#
0 68.1 57.63 29.56 5.80 124.90
B
a
68.1
Doppler Frequency (Hz) 380
Velocity of
Target (cm/s)
10