Guidance and Manufacturer’s Declaration - Electromagnetic
Immunity
The Eko Electronic Stethoscope System is intended for use in the
electromagnetic environment specified below. The user of the Eko
Electronic Stethoscope System should assure that it is used in such an
environment.
Immunity
Test
IEC 60601
Test Level
Compliance
Level
Electromagnetic
Environment-Guidance
Conducted
RF
IEC 61000-
4-6
3 Vrms
150 kHz to
80 MHz
Not
Applicable
Radiated RF
IEC 61000-
4-3
3V/m
80 MHz to
2.5 GHz
3 V/m
80 MHz to
2.5 GHz
d = 1.2 √P 80 MHz to
800 MHz
d = 2.3 √P 800 MHz to
2.5 GHz
where P is the maximum
output power rating of the
transmitter in watts (W)
according to the transmitter
manufacturer and d is the
recommended separation
distance in meters (m).
Field strengths from fixed RF
transmitters, as determined
by an electromagnetic site
survey,
a
should be less than
the compliance level in each
frequency range.
b
Interference may occur in the
vicinity of equipment marked
with the following symbol:
21
© 2018 Eko Devices, Inc.
Immunity
Test
IEC 60601
Test Level
Compliance
Level
Electromagnetic
Environment-Guidance
Power
frequency
(50/60 Hz)
magnetic
field
IEC 61000-
4-8
3 A/m 3 A/m Power frequency
magnetic fields should
be at levels characteristic
of a typical location in
a typical commercial
magnetic field or hospital
environment.
NOTE U
T
is the a.c. mains voltage prior to application of the test level
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