Bionet FC-700 - Page 47

Rev.2.41 47
Fetal Monitor FC-700 Operating Manual
Maximum Probe Temperature (Degrees C)
Probe
Max Temperature
With TMM
Phantom
In Air
Mode
US
33.8
23.6
PWD Mode
Lens temperature monitored for 30 min.
Measurement uncertainty: +-0.5 degree C.
Ambient temperature : 23.5 degree C
Table Key
IEC
FDA
Meaning IEC60601-2-37 / FDA&NEMA
UD2,UD3
α
a
Acoustic Attenuation Coefficient / Derating factor
(usually 0.3 dB/cm-MHz)
Aaprt
Aaprt
-12db Output Beam Area / Active aperture area
CMI
-
Normalizing Coefficient
Deq
Deq
Equivalent Aperture Diameter
d-6
d-6
Pulse Beam Width / Beam diameter at –6 dB
deq
deq
Equivalent Beam Diameter
ƒawf
fc
Acoustic Working Frequency / Center frequency
Ipa
Ipa
Pulse-Average Intensity
Ipa,α
Ipa.3
Attenuated Pulse-Average Intensity
Ipi
PII
Pulse-Intensity Integral
Ipi,α
PII.3
Attenuated Pulse-Intensity Integral
Ita(z)
ITA
Temporal-Average Intensity
Ita,α(z)
ITA.3(Z)
Attenuated Temporal-Average Intensity at depth
z
Izpta(z)
ISPTA(Z)
Spatial-Peak Temporal-Average Intensity
Izpta,α(z)
ISPTA.3(Z)
Attenuated Spatial-Peak Temporal-Average
Intensity
MI
MI
Mechanical Index