Eko CORE Gebrauchsanweisung Seite 26

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
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
NOTE 1: At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2: These guidelines may not apply in all situations. Electromagnetic propagation
is affected by absorption and is affected by absorption and reflection from structures,
objects and people.
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless)
a
telephones and land mobile radios, amateur radio, AM and FM radio broadcast and TV
broadcast cannot be predicted theoretically with accuracy. To address the electromagnetic
environment due to fixed RF transmitters, an electromagnetic site survey should be
considered. If the measured field strength in the location in which the Eko Electronic
Stethoscope System is used exceeds the applicable RF compliance level above, the Eko
Electronic Stethoscope System should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as re-orienting or
relocating the Eko Electronic Stethoscope System.
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
b
26
Guidance and Manufacturer's
IEC 60601 Compliance
Test Level Level
3 Vrms Not Applicable
150 kHz to 80
MHz
10 V/m 10 V/m
80 MHz to 80 MHz to
2.7 GHz 2.7 GHz
Electromagnetic Environment-
Guidance
d = 1.2 √P 80 MHz to 800 MHz
d = 2.3 √P 800 MHz to 2.7 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: