3101126 Rev A Vapotherm Oxygen Assist Module Instructions for Use
Page 29
Appendix A
Recommended separation distances between
portable and mobile RF communications equipment and the Oxygen Assist Module
The Oxygen Assist Module is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of the Oxygen Assist Module can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the Oxygen
Assist Module 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
50 kHz to 80 MHz
outside ISM bands
d
=1.2√P
150 kHz to 80 MHz
in ISM bands
d
=1.2√P
800 MHz to 2.5 GHz
d
=2.3√P
0.01
0.12
0.12
0.23
0.1
0.34
0.34
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.