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11 Appendix B: Electromagnetic Compatibility (EMC)
The Atlas monitor has been tested and found in compliance with the requirements of IEC 60601-1-
2:1993.
This Welch Allyn Atlas Monitor is suitable for use in the specified electromagnetic environment. The
buyer or user of this product should assure that it is used in an electromagnetic environment as
specified below:
Emissions Category EMC Environment
CISPR 11
(Radiated and
Conducted)
Group 1, Class B
Harmonics IEC1000-3-2
Voltage
Fluctuations/Flicker
IEC 1000-3-3
This product is suitable for use in domestic
establishments and in establishments directly
connected to the low voltage power supply network
that supplies buildings used for domestic purposes.
Immunity Severity Level EMC Environment
ESD 3 Floors are wood, concrete, ceramic or are covered
with synthetic material. Relative humidity must be
greater than 15%.
Radiated RF 2
Conducted RF 2
Portable communication devices may interfere with
the proper operation of this device. Warnings should
be posted to prevent these devices from coming near
the monitor during operation. If the monitor is placed
near a stationary RF transmitter and the performance
of the monitor is questioned, either remove the
transmitter or monitor then document the change in
performance from the monitor. A site survey may be
required to determine if excessive RF energy could
pose a problem for monitor operation.
EFT 2 Mains power quality is that of a typical commercial
and hospital environment.
Surge 3 Mains power quality is that of a typical commercial
and hospital environment.
Voltage
Dips/Interrupts
3 Mains power quality is that of a typical commercial
and hospital environment. If CLINICAL UTILITY is
required during power interruptions, it is
recommended that the unit be operated from an
uninterruptible power supply.
Magnetic Field 2 Magnetic fields are at levels typical in a commercial
and hospital environment.