T4 EEG Amplifier User Manual
50
Recommended separation distance between portable and mobile RF communications equipment
and the T4 EEG System
EN 60601-1-2
The T4 is intended for use in the electromagnetic environment in which radiated RF disturbances
are controlled. The customer or the user of the T4 can help prevent electromagnetic interference
by maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and the T4 as recommended below, according to the maximum output power of the
communications equipment.
Rated maximum out-
put power of trans-
mitter
Separation distance according to frequency of transmitter
m
W
150 kHz to 80 MHz
d = 1.17
√
P
80 MHz to 800 MHz
d = 1.17
√
P
800 MHz to 2.5 GHz
d = 2.33
√
P
0.01
0.12
0.12
0.23
0.1
0.38
0.38
0.73
1
1.2
1.2
2.3
10
3.8
3.8
7.3
100
12
12
23
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in meters (m)
can be estimated 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. These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection
from structures, objects and people.