AED HeartPlus NT-180 - Page 59

Section IV – Appendix
55
HeartPlus™ can help prevent electromagnetic interference by maintaining a
minimum distance between portable and mobile RF communications equipment
(transmitters) and the HeartPlus™ 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)
80MHz ~ 800MHz
d=0.6√P
80MHz ~ 2.5GHz
d=1.15√P
0.01
0.06
0.115
0.1
0.19
0.36
1
0.6
1.15
10
1.9
3.64
100
6.0
11.5
For transmitters rated at a maximum output power not listed above, the
recommended separation distance d in metres (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 80MHz and 800MHz, the separation distance for the higher frequency range
applies.
NOTE 2: The ISM (industrial, scientific and medical) bands between 150kHz and 80MHz are
6.765 MHz to 6.795 MHz; 13.553 MHz to 13.567MHz; 26.957MHz to 27.283 MHz; and
40.66MHz to 40.70MHz.
NOTE 3: An additional factor of 10/3 is used in calculating the recommended separation
distance for transmitters in the ISM frequency bands between 150kHz and 80MHz and in the
frequency range 80MHz to 2.5GHz to decrease the likelihood that mobile/portable
communications equipment could cause interference if it is inadvertently brought into patient
area.
NOTE 4: These guidelines may not apply in all situations. Electromagnetic propagation is
affected by absorption and reflection from structures, objects and people.