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 affected by the absorption and reflection from structures, objects, and people.
15 .2 . FCC WARNING STATEMENT FOR MODEL RS-00500C:
• This device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may
cause undesired operation.
• This equipment complies with FCC radiation exposure limits set forth for an uncon-
trolled environment. End users must follow the specific operating instructions for satis-
fying RF exposure compliance. This transmitter must not be co-located or operating in
conjunction with any other antenna or transmitter.
• Changes or modifications not expressly approved by the party responsible for compli-
ance could void the user's authority to operate the equipment.
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
38/338
800 MHz to 2.5 GHz
d = 2.3 √P
0.12
0.38
3.8
12
0.23
0.73
7.3
23