Emi Limitations - GE Vivid i n Service Manual

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Power Stability Requirements

Voltage drop-out

Only relevant if system is operating without a battery.

Power Transients

(All applications)

Less than 25% of nominal peak voltage for less than 1 millisecond for any type of transient, including

line frequency, synchronous, asynchronous, or aperiodic transients.

EMI Limitations

Ultrasound machines are susceptible to Electromagnetic Interference (EMI) from radio frequencies,

magnetic fields, and transients in the air or wiring. They also generate EMI. The Vivid i n and Vivid q N

ultrasound units comply with limits as stated on the EMC label. However, there is no guarantee that

interference will not occur in a particular installation.

Possible EMI sources should be identified before the unit is installed, and should not be on the

same line as the ultrasound system. A dedicated line should be used for the ultrasound system.

Electrical and electronic equipment may produce EMI unintentionally as the result of a defect. Sources

of EMI include the following:

Medical lasers.

Cauterizing guns.

Gel warmers.

Microwave ovens.

Portable phones.

Broadcast stations and mobile broadcasting machines.

Section 2-2 - Console Requirements

IVID I N AND