Page 50 of 53 Copyright © 2007, General Electric Company 2023486-201 Rev C
a
The ISM (industrial, scientific and medical) bands 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 to 40.70 MHz.
b
The compliance levels in the ISM frequency bands between 150 kHz and 80 MHz and in the frequency range 80
MHz to 2.5 GHz are intended to decrease the likelihood that mobile/portable communications equipment could
cause interference if it is inadvertently brought into patient areas. For this reason, an additional factor of 10/3 is
used in calculating the recommended separation distance for transmitters in these frequency ranges.
c
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 AED is used exceeds the
applicable RF compliance level above, the AED PRO should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as re-orienting or relocating the AED PRO.
d
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 1 V/m.
Recommended separation distances between portable and mobile RF communications equipment and the AED
PRO
The AED PRO is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled.
The customer or the user of the AED can help prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and the AED PRO as recommended below,
according to the maximum output power of the communications equipment.
Separation distance according to frequency of transmitter
m
Rated maximum
output power of
transmitter
W
150 kHz to 80 MHz
outside ISM bands
d = 1.2√P
150 kHz to 80 MHz
in ISM bands
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 0.12 0.23
0.1 0.38 0.38 0.38 0.73
1 1.2 1.2 1.2 2.3
10 3.8 3.8 3.8 7.3
100 12 12 12 23
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in meters
(m) can be determined 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 The ISM (industrial, scientific and medical) bands 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 to 40.70 MHz.
NOTE 3 An additional factor of 10/3 is used in calculating the recommended separation distance for transmitters in the
ISM frequency bands between 150 kHz and 80 MHz and in the frequency range 80 MHz to 2.5 GHz to
decrease the likelihood that mobile/portable communications equipment could cause interference if it is
inadvertently brought into patient areas.
NOTE 4 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
reflection from structures, objects and people.
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