GE Corometrics 250cx Series, Service Manual, Page: 244 / 252

C-4 250cx Series Maternal/Fetal Monitor Revision C
2036947-001
Electromagnetic Compatibility: Electromagnetic Compatibility (EMC)
Guidance and Manufacturer’s Declaration – Electromagnetic
Immunity
The 250cx Series Maternal/Fetal Monitor is intended for use in the electromagnetic
environment specified below. It is the responsibility of the customer or user to
assure that the 250cx Series Maternal/Fetal Monitor is used in such an environment.
NOTE:
U
t
is the AC mains voltage prior to application of the test level.
Immunity Test EN 60601 Test Level Compliance Level Electromagnetic Environment – Guidance
Electrostatic
Discharge (ESD)
EN 61000-4-2 ± 6 kV contact ± 6 kV contact Floors should be wood, concrete or ceramic tile. If
floors are covered with synthetic material, the relative
humidity should be at least 30%.
± 8 kV air ± 8 kV air
Electrical Fast
Transient/Burst
EN 61000-4-4 ± 2 kV for power supply lines ± 2 kV for power supply
lines Mains power should be that of a typical commercial
or hospital environment.
±1 kV for input/output lines ±1 kV for input/output
lines
Surge
EN 61000-4-5 ± 1 kV differential mode ± 1 kV differential mode Mains power should be that of a typical commercial
or hospital environment.
± 2 kV common mode ± 2 kV common mode
<5% U
t
(>95% dip in U
t
)
for 0.5 cycles
<5% U
t
(>95% dip in U
t
)
for 0.5 cycles
Voltage dips, short
interruptions and
voltage variations
on power supply
input lines
EN 61000-4-11 <40% U
t
(>60% dip in U
t
)
for 5 cycles
<40% U
t
(>60% dip in
U
t
) for 5 cycles
Mains power should be that of a typical commercial
or hospital environment. If the user of the equipment
requires continued operation during power mains
interruptions, it is recommended that the equipment
be powered from an uninterruptible power supply or
a battery.
<70% U
t
(>30% dip in U
t
)
for 25 cycles
<70% U
t
(>30% dip in
U
t
) for 25 cycles
<5% U
t
(>95% dip in U
t
)
for 5 s
<5% U
t
(>95% dip in U
t
)
for 5 s
Power Frequency
(50/60 Hz)
Magnetic Field
EN 61000-4-8 3 A/m 3 A/m Power frequency magnetic fields should be at levels
characteristics of a typical location in a typical
commercial or hospital environment.