![Chison ECO 1VET Operation Manual Download Page 168](http://html.mh-extra.com/html/chison/eco-1vet/eco-1vet_operation-manual_2602722168.webp)
ECO Series VET Digital Color Doppler Ultrasound System
153
Appendix D: Display Accuracy and Acoustic Measurement
Uncertainties
According to IEC60601-2-37 and NEMA UD-3 2004, the display accuracy and acoustic measurement
uncertainties are summarized in the table below.
Display accuracy of MI is ±20%, and TI is ±40% or <0.1, if MI, TI below 0.5.
Item
Measurement Uncertainty
(Percentage, 95% Confidence Value
Center Frequency
±15%
Acoustic Power
±30%
Acoustic Intensity
±30%
Peak Rarefactional Pressure
±15%
Summary of Contents for ECO 1VET
Page 2: ......