GE H
EALTHCARE
D
IRECTION
5305880-100, R
EVISION
3
LOGIQ™ 100 PRO S
ERVICE
M
ANUAL
Page 2-4
Section 2-2 - General Console Requirements
2-2-3 EMI Limitations (cont’d).
2-2-4
Probes Environmental Requirements
NOTICE:
SYSTEMS AND ELECTRONIC PROBES ARE DESIGNED FOR STORAGE TEMPERATURES
OF -20 TO + 50 deg C. WHEN EXPOSED TO LARGE TEMPERATURE VARIATIONS, THE
PRODUCT SHOULD BE KEPT IN ROOM TEMPERATURE FOR 10 HOURS BEFORE USE.
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.
Replace all screws,
RF gaskets, covers,
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.
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. Or, if a label has been found in such a
position, move the label.
Use GE specified
harnesses and
peripherals
The interconnect cables are grounded and require ferrite beads and other
shielding. Also, cable length, material, and routing are all important; do
not change from what is specified.
Take care with
cellular phones
Cellular phones may transmit a 5 V/m signal; that could cause 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.
Table 2-4 EMI Prevention/abatement
ELECTRONIC
PAMPTE
Operation:
10 to 40
o
C
5 to 42.7
o
C
Storage:
-20 to 50
o
C
-20 to 50
o
C
Temperatures in degrees C, conversion to degrees F =
o
C*(9/5) + 32)
Table 2-5 Operation and Storage Temperatures for Probes.
State: RELEASE - Document is released and under formal Change Control. Changes are subject to the ECR/ECO Process.
See the GEHC Myworkshop System to determine the status of this document.
Approved Document - 5305880-100TPH_r3.pdf Page 43 of 197
