User's Manual Part 3

10-33
3880 System
Table 205—Recommended separation distances between portable and mobile RF communications equipment and the EQUIPMENT or SYSTEM—
for LIFE-SUPPORTING EQUIPMENT and SYSTEMS
Recommended separation distances between portable and mobile RF communications equipment and the
3880 System
The 3880 System is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of the 3880 System can help prev
ent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and
the 3880 System 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
150 kHz to 80 MHz
outside ISM bands
d = 1.17 √ 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 = 2.33 √ P
0.01
0.12
0.12
0.12
0.23
0.1 0.38 0.38 0.38 0.77
1
1.17
1.2
1.17
2.33
10
3.8
3.8
3.8
7.67
100 11.67 12 11.67 23.33
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 MHz 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.
Recommended separation distances between the 3880 System components and local radio frequency devices, such as WiFi AP devices, for wireless
coexistence: Maintain a 2 meter ( 6’) separation.