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Acoustic output
10-69
Acoustic measurement precision and uncertainty
All table entries have been obtained at the same operating conditions that give rise to the maximum index
value in the first column of the table. Measurement precision and uncertainty for power, pressure, intensity,
and other quantities that are used to derive the values in the acoustic output table are shown in the table
below. In accordance with Section 6.4 of the Output Display Standard, the following measurement precision
and uncertainty values are determined by making repeat measurements and stating the standard deviation
as a percentage.
Table 10-57: Acoustic Measurement Precision and Uncertainty
Quantity
Precision (% of standard deviation)
Uncertainty (95% confidence)
Pr
1.9%
±11.2%
Pr
.3
1.9%
±12.2%
Wo
3.4%
±10%
fc
0.1%
±4.7%
PII
3.2%
+12.5 to -16.8%
PII
.3
3.2%
+13.47 to -17.5%
Содержание SONOSITE X-PORTE
Страница 1: ...USER GUIDE ...
Страница 75: ...Setting up the system 3 39 ...
Страница 76: ...3 40 Setting up the system ...
Страница 128: ...4 52 Imaging ...
Страница 186: ...5 58 Measurements and calculations ...
Страница 210: ...6 24 Measurement references ...
Страница 234: ...8 16 Cleaning and disinfecting ...
Страница 262: ...9 28 Safety ...
Страница 334: ...10 72 Acoustic output ...
Страница 364: ...B 14 Index printing 5 56 zoom 4 23 ...
Страница 365: ......
Страница 366: ...P14645 05 P14645 05 ...