SECTION 8: Specifications and Safety
2025653-048 Revision B Responder
™
2000 Page 113
RF Communications Table
Recommended separation distances between portable and mobile RF communications equipment and the
Responder 2000
The RESPONDER 2000 is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of the RESPONDER 2000 can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the
RESPONDER 2000 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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