swiss made Syramed µSP6000 Handbuch Seite 38

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
The ISM (industrial, scientific and medical) bands between 150 kHz and 80 MHz are 6.765 MHz to 6.795 MHz; 13.553 MHz to
13.567 MHz; 26.957 MHz to 27.283 MHz; and 40.66 MHz to 40.7 MHz.
b
The compliance levels in the ISM frequency bands between 150 kHz and 80 MHz and in the frequency range 80 MHz to 2.5 GHz
are intended to decrease the likelihood that mobile/portable communications equipment could cause interference if it is inadvertently
brought into patient areas. For this reason, an additional factor of 10/3 is used in calculating the recommended separation distance
for transmitters in these frequency ranges.
c
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 Syramed µSP6000 Series is used exceeds the applicable RF compliance level above, the
Syramed µSP6000 Series should be observed to verify normal operation. If abnormal performance is observed, additional measures
may be necessary, such as reorienting or relocating the Syramed µSP6000 Series.
d
Over the frequency range 150 kHz to 80 MHz, field strength should be less than 10 V/m.
portable and mobile RF communications equipment and the Syramed µSP6000 Series
The Syramed µSP6000 Series is intended for use in the electromagnetic environment in which radiated RF disturbances are controlled.
The customer or the user of the Syramed µSP6000 Series can help prevent electromagnetic interference by maintaining a miminum
distance between portable and mobile RF communications equipment (transmitters) and the Syramed µSP6000 Series as recommended
below, according to the maximum output power of the communication 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 metres (m) can be
determined 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 The ISM (industrial, scientific and medical) bands between 150 kHz and 80 MHz are 6.765 MHz to 6.795 MHz; 13.553 MHz to
13.567 MHz; 26.957 MHz to 27.283 MHz; and 40.66 MHz to 40.7 MHz.
NOTE 3 An additional factor of 10/3 is used in calculating the recommended separation distance for transmitters in the ISM frequency
bands between 150 kHz and 80 MHz and in the frequency range 80 MHz to 2.5 GHz to decrease the likelihood that mobile/portable
communications equipment could cause interference if it is inadvertently brought into patient areas.
NOTE 4 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from
structures, objects and people.
Recommended separation distances between
Separation distance according to frequency of transmitter
150 kHz to 80 MHz 150 kHz to 80 MHz
outside ISM bands
d = 0.35√P
0.04
0.13
0.40
1.3
4.0
Interference may occur in the vicinity of equipment marked with the
following symbol:
80 MHz to 800 MHz
in ISM bands
d = 1.2√P
0.12
0.38
1.2
3.8
12
800 MHz to 2.5 GHz
d = 1.2√P d = 2.3√P
0.12
0.38
1.2
3.8
12
0.23
0.73
2.3
7.3
23
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