GE
D
IRECTION
FQ091019, R
EVISION
2
V
IVID Q
N S
ERVICE
M
ANUAL
2-4
Section 2-2 - Console Requirements
2-2-5-5
Power Stability Requirements
•
Voltage drop-out
Max 10 ms.
NOTE:
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.
2-2-6
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 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.
NOTE:
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.
•
Scanners.
•
Cauterizing guns.
•
Computers.
•
Monitors.
•
Fans.
•
Gel warmers.
•
Microwave ovens.
•
Portable phones.
•
Broadcast stations and mobile broadcasting machines.
