HoMedics BPA-060 Manual page 30

• Recommended separation distances between portable and mobile RF communication equipment
and the device.
The device is intended for use in an electromagnetic environment where radiated RF disturbances are
under control. User can help prevent electromagnetic interference by keeping the device at a minimum
distance from portable and mobile RF communications equipment (transmitters). Below table details
the maximum output power of transmitter:
Separation distance according to frequency of transmitter m
Rated maximum
output power of
150 kHz to 80 MHz
transmitter W
d = 1.2
0.01
0.1
1
10
100
For transmitters rated at a maximum output power not listed above, the recommended separation distance
d in metres (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 absorp-
tion and reflection from structures, objects and people.
• Guidance and manufacturer's declaration – electromagnetic immunity: The device is intended for
use in the electromagnetic environments listed below, and should only be used in such environments:
Immunity IEC 60601 Compliance
test test level
Conducted 3 Vrms 3 Vrms
RF 150 kHz to
IEC 61000- 80 MHz 3 V/m
4-6
3 V/m
Radiated 80 MHz to
RF 2.5 GHz
IEC 61000-
4-3
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 as 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 device is used exceeds
the applicable RF compliance level above, the device should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as reorienting or relocating the device.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
80 MHz to 800 MHz
d = 1.2
0.12 0.12
0.38 0.38
1.2 1.2
3.8 3.8
12 12
Electromagnetic environment – guidance
level
Portable and mobile RF communications equipment should
be used no closer to any part of the device, including cables,
than the recommended separation distance calculated from
the equation applicable to the frequency of the transmitter.
Recommended separation distance
d = 1.2
d = 1.2 80 MHz to 800 MHz
d = 2 .3 800 MHz to 2.5 GHz
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 survey, a should be less than the
compliance level in each frequency range.b
Interference may occur in the vicinity of equipment marked
with the following symbol:
29
800 MHz to 2.5 GHz
d = 2.3
0.23
0.73
2.3
7.3
23
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