BIOTRONIK CRM Reocor D Manuel Technique page 93

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Rated power of Safe distance d [m] corresponding to transmission frequency
the transmitter
150 kHz to
P [W]
80 MHz outside
the ISM bands
d = 0.35
0.01
0.10
1.00
10.00
100.00
For transmitters whose rated power is not specified in the table above, the safe dis-
tance can be calculated using the specified formula for the corresponding frequency.
Here P is the rated power of the transmitter in watts [W] and d is the safe distance
in meters [m].
COMMENT 1: The ISM bands (for industrial, scientific and medical applications)
between 150 kHz and 80 MHz are 6.765 MHz to 6.795 MHz; 13.553 MHz to
13.567 MHz; 26.957 MHz to 27.283 MHz and 40.66 MHz to 40.70 MHz.
COMMENT 2: The compliance level in the ISM frequency bands between 150 kHz and
80 MHz and in the frequency range 80 MHz to 2.5 GHz is designed to reduce the like-
lihood that mobile communication devices cause interference if they are uninten-
tionally brought into the patient area. For this reason a greater safety distance is
recommended in these frequency ranges (factor 1.2 instead of 0.35).
COMMENT 3: These guidelines do not necessarily apply in all situations. The spread
of electromagnetic waves is influenced by absorption and reflection from buildings,
objects, and humans.

Conformity According to IEC 60601-1-2
Recommended safe distances to portable and mobile
RF communications equipment
(IEC 60601-1-2: Table 5)
The device is intended for use in an electromagnetic
environment, in which the RF interference is control-
lable. The user of the device can help to prevent elec-
tromagnetic interference by maintaining the safe
distance to mobile RF communication equipment
(transmitters) – depending on the power output of 
the communication equipment.
150 kHz to
80 MHz inside
the ISM bands
P d = 1.2
0.04 0.12
0.11 0.38
0.35 1.20
1.11 3.79
3.50 12.00
80 MHz to
800 MHz
P d = 1.2 P
0.12
0.38
1.20
3.79
12.00
800 MHz to
2.5 GHz
d = 2.3 P
0.23
0.73
2.30
7.27
23.00