Samsung SONOACE R5 Manual do Utilizador descarregar pdf (Página 46)

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Operation Manual

Fc The center frequency (MHz). For MI and ISPPA.3, Fc is the center frequency associated with

the transmit pattern giving rise to the global maximum value of the respective parameter. For

ISPTA.3, for combined modes involving beam types of unequal center frequency, Fc is dened

as the overall range of center frequencies of the respective transmit patterns.

ZSP The axial distance at which the reported parameter is measured (centimeters).

x-6,y-6 are respectively the in-plane (azimuth) and out-of-plane (elevation) -6 dimensions in the x-y

plane where ZSP is found (centimeters).

PD The pulse duration (microseconds) associated with the transmit pattern giving rise to the

reported value of the respective parameter.

PRF The pulse repetition frequency (Hz) associated with the transmit pattern giving rise to the

reported value of the respective parameter.

EBD The entrance beam dimensions for the azimuth and elevation planes (centimeters).

EDS The entrance dimensions of the scan for the azimuth and elevation planes (centimeters).

Acoustic Measurement Precision and Uncertainty

The Acoustic Measurement Precision and Acoustic Measurement Uncertainty are described below.

Quantity Precision Total Uncertainty

PII.3 (derated pulse intensity integral) 3.2 % +21 % to - 24 %

Wo (acoustic power) 6.2 % +/- 19 %

Pr.3 (derated rarefaction pressure) 5.4 % +/- 15 %

Fc (center frequency) < 1 % +/- 4.5 %

■

Systematic Uncertainties.

For the pulse intensity integral, derated rarefaction pressure Pr.3, center frequency and pulse duration,

the analysis includes considerations of the eects on accuracy of:

Hydrophone calibration drift or errors.

Hydrophone / Amp frequency response.

Spatial averaging.

Alignment errors.

Voltage measurement accuracy, including.

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Samsung SONOACE R5 Manual do Utilizador Página 46