Samsung SONOACE R7 Manual de usuario Pagina 47

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1-31
Chapter 1 Safety
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.
Oscilloscope vertical accuracy.
Oscilloscope oset accuracy.
Oscilloscope clock accuracy.
Oscilloscope Digitization rates.
Noise.
The systematic uncertainties Acoustic power measurements using a Radiation Force are measured
through the use of calibrated NIST acoustic power sources.
We also refer to a September 1993 analysis done by a working group of the IEC technical committee 87
and prepared by K. Beissner, as a rst supplement to IEC publication 1161.
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Prof Akhigbe 24 Apr 2024 | 14:29:06

I want to learn how to do angle correction on PW Doppler on my machine.

Prof Akhigbe 24 Apr 2024 | 14:30:30

How do I assess PW angle cursor?

Prof Akhigbe 24 Apr 2024 | 14:40:21

I don't want to join the group.