136 20 Electromagnetic compatibility statement
fabian +nCPAP evolution | SW V5.1.x
Ref: 122003.EN / Date : 26Jan2021
Recommended safety distances between portable and mobile
HF communication devices and the device " fabian +nCPAP evolution "
For transmitters with a maximum power output not listed in the above table the recommended safety
distance d in metres (m) can be determined using the equation from the corresponding column, with P being
the transmitter’s maximum power output Watts (W) per the transmitter’s manufacturer specifications.
REMARK 1 At 80 MHz and 800 MHz the safety distance of the higher frequency applies.
REMARK 2 The ISM bands (industrial, scientific and medical) 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
40.66 MHz to 40.7 MHz
REMARK 3 An additional factor of 10/3 is used when calculating the recommended safety distance for
transmitters within the ISM frequency between 150KHz and 80 MHz and between 80MHz and
2.5GHz to reduce the probability of mobile/portable transmitters causing interference if
accidentally brought into the vicinity of the patient.
REMARK 4 These guidelines may not apply to all case. The propagation of electromagnetic quantities is
influenced by absorption and reflexion of buildings, objects and people.
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