15.1.3. Recommended Separation Distances between Portable and Mobile RF
Communications Equipment and the Zen-O™ Portable Oxygen Concentrator
The Zen-O™ Portable Oxygen Concentrator is intended for use in an electromagnetic en-
vironment in which radiated RF disturbances are controlled. The concentrator user can
help prevent electromagnetic interference by maintaining a minimum distance between
portable and mobile RF communications equipment (transmitters) and the concentrator
as recommended below, according to the maximum output power of the communica-
tions equipment.
EN
RATED MAX. OUT
PUT POWER OF
TRANSMITTER W
0.01
100
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.
Important: At 80 MHz and 800 MHz, the separation distance for the higher frequency
range applies.
Important: These guidelines may not apply in all situations. Electromagnetic propaga-
tion is a ected by the absorption and refl ection from structures, objects, and people.
SEPARATION DISTANCE M ACCORDING TO FREQUENCY OF
150 kHz to 80 MHz
d = 1.2 √P
0.1
10
TRANSMITTER
80 MHz to 800 MHz
d = 1.2 √P
0.12
0.38
3.8
12
40/370
800 MHz to 2.5 GHz
d = 2.3 √P
0.12
0.38
3.8
12
0.23
0.73
7.3
23