Rf Communication Equipment - Brainlab Buzz 2.0 System And Technical User Manual

COMPLIANCES AND SPECIFICATIONS
4.4.3

RF Communication Equipment

Electromagetic Environment
Portable and mobile RF communications equipment can affect the systems.
Buzz is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled.
Buzz users can help prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and Buzz as
recommended below, according to the maximum output power of the communications equipment.
Separation Distances
Recommended separation distances between portable and mobile RF communications equipment
and Buzz:
Rated Maximum Out-
put Power of Trans-
mitter (W)
0.01
0.1
1
10
100
For transmitters rated at a maximum output power not listed above, the recommended separa-
tion 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: At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
NOTE: These guidelines may not apply in all situations. Electromagnetic propagation is affected
by absorption and reflection from structures, objects and people.
WLAN
Frequency or frequency band of transmission: 2.4 GHz and 5 GHz with a bandwidth of 20 MHz in
802.11 b/g Standard and 40 MHz in 802.11n.
System and Technical User Guide Rev. 1.2 Buzz Ver. 2.0
Separation Distance According to Frequency of Transmitter (m)
150 kHz to 80 MHz 80 MHz to 800 MHz
,
d = 1 2 P
d = 0.12 d = 0.12
d = 0.38 d = 0.38
d = 1.20 d = 1.20
d = 3.79 d = 3.79
d = 12.00 d = 12.00
800 MHz to 2.5 GHz
,
d = 1 2 P d
d = 0.23
d = 0.73
d = 2.30
d = 7.27
d = 23.00
,
= 2 3 P
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