Electro-Magnetic Interference (Emi) Constraints - GE Discovery NM/CT 670 Instructions Manual

Special Construction Requirements
Table 3-2: Electro-Magnetic Interference (EMI) Constraints
Component Ambient magnetic fields
Static
Gantry and -4
< 10 tesla
Table
(1,000 milligauss)
Color -3
< 10 tesla
Monitor
(10,000 milligauss)
Console /
-3
< 10 tesla
Computer
(10,000 milligauss)
Equipment
Magnetic
Media
-3
< 10 tesla
(10,000 milligauss)
Discovery NM/CT 670 – Standard Integration Instructions
5483063-1EN, Rev.2, ©2015 GE Healthcare
System attributes
affected
AC
-6
< 10 tesla
Imaging performance
(10 milligauss) peak
Color purity and display
NA
geometry
NA Data integrity
NA Data integrity
3-8
3.3 EMI Considerations
3.3.2 Electro-Magnetic Interference (EMI)
Comments
WARNING
!
The gantry and table must be installed only in
x-ray protected rooms providing an attenuation
of > 12 db for radio disturbances from 30 MHz
to 1 GHz. (See specifications in IEC 60601-1-2,
First Edition, 1993)
The CT PDU produces an electromagnetic field
that radiates outward from its cabinet in all
directions.
The UPS provides a consistent power supply in
normal conditions and during a site-wide
power outage.
Do not place sensitive electronics, for example
console or computer equipment within 1 m of
the CT PDU or 1 m of the UPS, in any direction
(including above or below)
Note: The UPS and CT PDU are not classified
as sensitive electronics.