Noraxon myoMOTION 682 User Manual page 34

Noraxon U.S.A., Inc.
NOTE 1 At 80 MHz and 800 MHz, 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.
a
Field strengths from fixed transmitters, such a base stations for radio (cellular/cordless) telephones and land mobile
radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with
accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an electromagnetic site survey
should be considered. If the measured field strength in the location in which the myoMOTION system is used
exceeds the applicable RF compliance level above, the myoMOTION system should be observed to verify normal
operation. If abnormal operation is observed, additional measures may be necessary, such as reorienting or
relocating the myoMOTION system
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Recommended separation distances between portable and mobile RF communications
The myoMOTION system is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of the myoMOTION system can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the
myoMOTION system as recommended below, according to the maximum output power of the communications
equipment.
Rated maximum output power of
transmitter
W
0,01
0,1
1
10
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.
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.
P-6828 Rev A (Oct 2014)
equipment and the myoMOTION System
Separation distance according to frequency of transmitter
150 kHz to 80 MHz

d 1 2 .
0.12
0.38
1.2
3.8
12
myoMOTION Data Logger
where P is the maximum output power
rating of the transmitter in watts (W)
according to the transmitter manufacturer
and d is the recommended separation
distance in metres (m).
Field strengths from fixed RF transmitters,
as determined by an electromagnetic site
a
survey, should be less than the
compliance level in each frequency
b
range.
Interference may occur in the vicinity of
equipment marked with the following
symbol:
m
80 MHz to 800 MHz

P d 1 2 . P
0.12
0.38
1.2
3.8
12
800 MHz to 2,5 GHz

d 2 3 . P
0.23
0.73
2.3
7.3
23
30