GE MEDICAL SYSTEMS
D
IRECTION 5184024-100, REVISION 5 LOGIQWORKS® BASIC SERVICE MANUAL
Chapter 2 Pre-Installation 2-9
2-2-5 EMI Limitations
Computers are susceptible to Electromagnetic Interference (EMI) from radio frequencies, magnetic
fields, and transients in the air or wiring. They also generate EMI. The LOGIQworks complies 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.
Electrical and electronic equipment may produce EMI unintentionally as the result of a defect.
These sources include:
• medical lasers,
• scanners,
• cauterizing guns,
• computers,
•monitors,
• fans,
• gel warmers,
• microwave ovens,
• light dimmers
• portable phones.
The presence of a broadcast station or broadcast van may also cause interference.
see Table 2-16 for EMI Prevention tips
WARNING
WARNING
Danger of Electromagnetic Incompatibility!
Devices that are not CE marked can create an electromagnetic field which could impair the operation
of other devices.
To prevent this, check if the device is CE marked or FCC-marked.
Use only CE marked devices and medical devices appropriate under
EN/IEC 60601-1-2.
WARNING
WARNING
Danger of False Diagnosis!
Danger of Data Loss!
Personal computers can be affected by electromagnetic fields from other devices.
Do not place devices which could cause electromagnetic interference near the personal computer!
Table 2-16 EMI Prevention/Abatement
EMI Rule Details
Be aware of RF sources
Keep the unit at least 5 meters or 15 feet away from other EMI sources. Special shielding may
be required to eliminate interference problems caused by high frequency, high powered radio
or video broadcast signals.
Ground the unit
Poor grounding is the most likely reason a unit will have noisy images. Check grounding of the
power cord and power outlet.
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