Acoustic Measurement Precision And Uncertainty - FujiFilm SonoSite X-Porte User Manual

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
Pr
Pr
.3
Wo
fc
PII
PII
.3
Acoustic output
Precision (% of standard deviation)
1.9%
1.9%
3.4%
0.1%
3.2%
3.2%
Uncertainty (95% confidence)
±11.2%
±12.2%
±10%
±4.7%
+12.5 to -16.8%
+13.47 to -17.5%
10-69