GE LOGIQ A100, Technical Publication

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Probes
274
LOGIQ
t α
100 User Manual
2211157–100 Rev 0
IEC Acoustic Output Tables
Acoustical parameters represent the maximum values for
a probe/mode combination; other parameters refer to the
operating conditions which yield these maximum acoustic
parameters.
Key to Tables
Parameter Unit Description
P_ (MPa) Peak-negative acoustic pressure in the plane
perpendicular to the beam-alignment axis
containing the maximum pulse-pressure-squared
integral (or maximum mean square acoustic
pressure for continuous wave systems) in the
whole ultrasonic field.
I
spta
mW/cm
2
Spatial-peak temporal-average derived intensity
in the whole ultrasonic field.
I
p
mm Distance from the transducer output face to the
point of maximum pulse-pressure-squared
integral (or maximum mean square acoustic
pressure for continuous wave systems).
w
pb6
(||)
(
ă
)
mm –6 dB pulse beam-width at the point of maximum
pulse-pressure-squared integral (or maximum
mean square acoustic pressure for continuous
wave systems). These directions shall be parallel
(||) and perpendicular (
ă
) to the reference
direction.
prr KHz Pulse repetition rate for non-scanning modes.
srr Hz Scan repetition rate (srr) for scanning modes.
Output Beam
Dimensions mm Dimensions parallel and perpendicular to the
reference direction.
f
awf
MHz Arithmetic-mean acoustic-working frequency
measured by a hydrophone placed at the point of
maximum pulse-pressure-squared integral (or
maximum mean square acoustic pressure for
continuous wave systems).
APF % Acoustic power-up fraction.
AIF % Acoustic initialization fraction.
Table 34. Key to IEC Table Value