GE 5418099, Руководство по обслуживанию

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GE H
EALTHCARE
D
IRECTION
5394227, 12 LOGIQ S8/LOGIQ E8 S
ERVICE
M
ANUAL
Section 2-2 - General console requirements 2 - 5
See table below for EMI Prevention tips.
Table 2-3 EMI Prevention/Abatement
EMI Rule Details
Be aware of RF sources.
Keep the unit at least 5 meters (16.4 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.
Replace and/or
reassemble all screws,
RF gaskets, covers and
cores. After you finish repairing or updating the system, replace all covers and tighten all screws.
Any cable with an external connection requires a magnet wrap at each end.
Install the shield over the front of card cage. Loose or missing covers or RF gaskets allow radio
frequencies to interfere with the ultrasound signals.
Replace broken RF
gaskets. If more than 20% or a pair of the fingers on an RF gasket are broken, replace the gasket.
Do not turn ON the unit until any loose metallic part is removed and replaced, if required.
Do not place labels where
RF gaskets touch metal. Never place a label where RF gaskets meet the unit. Otherwise, the gap created will permit RF leakage.
In case a label has been found in such a location, move the label to a different, appropriate location.
Use GE- specified
harnesses and
peripherals. The interconnect cables are grounded and require ferrite beads and other shielding.
Cable length, material, and routing are all important; do not make any changes that do not meet all
specifications.
Take care with cellular
phones.
Cellular phones may transmit a 5 V/m signal that causes image artifacts.
Properly dress peripheral
cables.
Do not allow cables to lie across the top of the card cage or hang out of the peripheral bays.
Loop the excess length for peripheral cables inside the peripheral bays.
Attach the monitor cables to the frame.