11
Guidance and Manufacturer’s Declaration – Electromagnetic Immunity
The CORE 500™ Digital Stethoscope is intended for use in the electromagnetic environment specified below. The user of the CORE 500™ Digital Stethoscope should ensure
that it is used in such an environment.
Immunity Test IEC 60601-1-2 Test
Level
Compliance
Level
Electromagnetic Environment – Guidance
Radiated RF IEC 61000-4-3:2010 80 MHz – 2.7 GHz
80 % AM at 1 kHz
10 V/m Portable and mobile RF communications equipment should be used no closer to any part of
the product, including cables, than the recommended separation distance calculated from the
equation applicable to the frequency of the transmitter.
Recommended separation distance
d = [3.5/E1]√P 80MHz to 800MHz
d = [7/E1]√P 800MHz to 2.7GHz
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.
Interference may occur in the vicinity of equipment marked with the following symbol.
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 aected by absorption and reflection from structures, objects and people.
a. Field strength from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios, amateur radios, AM and FM radio broadcasts and
TV broadcasts cannot be predicted theoretically with accuracy. To assess 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 product is used exceeds the applicable RF compliance level above, the product should be observed to
verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as re-orienting or relocating the product.
NOTE 3: If there is any lost or degraded essential performance of the device due to electromagnetic (EM) disturbances, performance of the device can be recovered by switching
OFF the device and switching it back ON.
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