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Chapter 8: Acoustic Output 155
Acoustic Output
(a)This index is not required for this operating mode; value is <1.
(b)This transducer is not intended for transcranial or neonatal cephalic uses.
# No data are reported for this operating condition since the global maximum index value is not reported for the reason
listed. (Reference Global Maximum Index Value line.)
Data are not applicable for this transducer/mode.
Table 32: Transducer Model:
P21x
Operating Mode:
2D
Index Label M.I.
TIS TIB
TIC
Scan
Non-scan
Non-scan
A
aprt
1A
aprt
>1
Global Maximum Index Value 1.5 (a) 2.3
Associated Acoustic
Parameter
p
r.3
(MPa) 2.03
W
0
(mW) #— —171.53
min of
[W
.3
(z
1
),I
TA.3
(z
1
)]
(mW)
z
1
(cm)
z
bp
(cm)
z
sp
(cm) 3.4
d
eq
(z
sp
) (cm)
f
c
(MHz) 1.83 # 1.94
Dim of A
aprt
X(cm) #— 1.9
Y(cm)
#— 1.3
Other Information
PD (μsec) 1.03
PRF (Hz) 4444
p
r
@PII
max
(MPa) 2.53
d
eq
@Pll
max
(cm)
Focal Length FL
x
(cm) #— 18.46
FL
y
(cm) #— 9.0
I
PA.3
@MI
max
(W/cm
2
)
194
Operating
Control
Conditions
Control 1: Exam Type Card Card
Control 2: Optimization Gen/
Pen
Pen
Control 3: Depth 4.7 cm 27 cm
Control 4: THI On Off
Control 5: Sector Width Any Narrow
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