User guide

Chapter 8: Acoustic Output 157
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 34: Transducer Model: P21x Operating Mode: CPD/Color
Index Label M.I.
TIS TIB
TIC
Scan
Non-scan
Non-scan
A
aprt
1A
aprt
>1
Global Maximum Index Value 1.5 1.3 — — — 2.5
Associated Acoustic
Parameter
p
r.3
(MPa) 2.03
W
0
(mW) 121.0 — —116.5
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 2.16 — — — 2.17
Dim of A
aprt
X(cm) 0.852 — — — 0.46
Y(cm)
1.3 — — — 1.30
Other Information
PD (μsec) 1.032
PRF (Hz) 2038
p
r
@PII
max
(MPa) 2.53
d
eq
@Pll
max
(cm) —
Focal Length FL
x
(cm) 3.68 — — 1.55
FL
y
(cm) 9.00 — — 9.00
I
PA.3
@MI
max
(W/cm
2
)
194
Operating
Control
Conditions
Control 1: Mode Color Color Color/CPD
Control 2: Exam Type Crd TCD TCD
Control 3: PRF/Depth Any/4.7 2500/7.5 2016/ 4.7
Control 4: Color Optimization Any Low Low
Control 5: THI On Off Off
Control 6: Color Box Size Any Short and
Narrow
Short and
Narrow