File No.: QR-HC21-C-C09
Xiamen Linktop Technology Co., Ltd.
Page 15 of 17
Conducted RF
IEC 61000-4-6
3Vrms
150kHz to
80MHz
Not
applicable
(Battery
operated
device)
Portable and mobile RF communications
equipment should be used no closer to
any part of the Electronic Stethoscope,
including cables, than the recommended
separation distance calculated from the
equation application to the frequency of
the transmitter.
Recommended separation distance
Radiated RF
IEC 61000-4-3
10V/m
80MHz to
2.7GHz
10V/m
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 meter (m)
Field strengths form 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:
NOTE 1 At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic is affected by
absorption and reflection from structures, objects and people.
a
Field strengths from transmitters, such as base stations for radio (cellular/cordless)
telephones and land mobile radios, amateur radio, AM and FM radio broadcast and TV
broadcast 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 filed strength in the location in which the Electronic Stethoscope