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Specifications
Recommended Separation Distances from RF Equipment for the X Series
Life-Supporting Functions
Life-supporting functions of the X Series include: ECG waveform monitoring from leads or
pads, the pacing pulse output, QRS detection, defibrillation energy discharge, and shock
advisory functions.
Recommended separation distances between portable and mobile RF
communications equipment and the X Series
The life-supporting functions of the X Series are intended for use in the electromagnetic environment in which
radiated RF disturbances are controlled. The customer or user of the X Series can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the X Series as recommended below, according to the
maximum output power of the communications equipment.
Rated maximum
output power of
equipment
(in watts)
0.01
0.1
10
100
For transmitters rated at a maximum output power not listed above, the recommended separation distance
meters can be determined using the equation applicable to the frequency of the transmitter, where
maximum output power rating of the transmitter in watts 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 MHz to 40.70 MHz.
NOTE 3: An additional factor of 10/3 is used in calculating the recommended separation distances 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.
A-34
Separation distance according to frequency of transmitter
150 kHz to 80 MHz
outside ISM bands
P
d =1.2
0.12
0.38
1
1.2
3.8
12
www.zoll.com
(in meters)
150 kHz to 80 MHz
80 MHz to 800 MHz
in ISM bands
P
d =1.2
d =1.2
0.12
0.38
1.2
3.8
12
800 MHz to 2.5 GHz
P
P
d =2.3
0.12
0.23
0.38
0.73
1.2
2.3
3.8
7.3
12
23
P
is the
9650-001355-01 Rev. M
d
in
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