Cardiocity Limited – RhythmPad
GP
– User Guide- Page 13
RhythmPadGP Manual.doc 20/05/16
Guidance and manufacturer’s declaration – Electromagnetic Immunity
The RhythmPad
GP
is intended for use in the electromagnetic environment specified below. The
customer or the user of the RhythmPad
GP
should assure that it is used in such an environment.
Immunity
test
IEC 60601
test level
Compliance
level
Electromagnetic environment - guidance
Conducted
RF
IEC61000-
4-6
Radiated RF
IEC61000-
4-3
3 Vrms
150 kHz to
80 MHz
3 V/m
80 MHz to
2.5 GHz
3 V
3 V/m
Portable and mobile RF communications equipment should
be used no closer to any part of the RhythmPad
GP
, including
cables,
than
the recommended separation distance
calculated from the equation applicable to the frequency of
the transmitter. Nevertheless, should incorrect operation
occur (in the form of interference present on waveforms), it
may be necessary to position the RhythmPad
GP
even further
away from suspected sources of electromagnetic fields.
Recommended separation distance (
d
)
d
= 1.2√P
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 metres (m). Fields 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:
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 reflection from structures,
objects and people.
a
Field strengths from fixed 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 field strength in the location in which the
RhythmPad
GP
is used exceeds the applicable RF compliance level above, the RhythmPad
GP
should be
observed to verify normal operation. If abnormal performance is observed, additional measures may be
necessary, such as re-orientating or relocating the RhythmPad
GP
.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Recommended separation distances between portable and mobile RF
communications equipment & RhythmPad
GP
The RhythmPad
GP
is intended for use in an electromagnetic environment in which radiated RF disturbances
are controlled. The customer or the user of the RhythmPad
GP
can help prevent electromagnetic interference
by maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and the RhythmPad
GP
as recommended below, according to the maximum output power of
the communications equipment.
Rated
maximum
output power
of transmitter
W
Separation distance according to frequency of transmitter (m)
150 KHz to 80 MHz
d
= 1.2√P
80 MHz to 800 MHz
d
= 1.2√P
800 MHz to 2.5
GHz
d
= 2.3√P
0.01
0.12
0.12
0.23
0.1
0.38
0.38
0.73
1
1.2
1.2
2.3
10
3.8
3.8
7.3
100
12
12
23.3
For transmitters rated at a maximum output power not listed above, the recommended separation distance
d
in metres (m) can be estimated using the equation applicable to the frequency of the transmitter, where P
is the maximum output power rating of the transmitter in watts (W) according to the transmitter
manufacturer. NOTE 1 At 80 MHz and 800 MHz, the separation distance for the higher frequency range
applies. NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected
by absorption and reflection from structures objects and people.