Instructions for Use
Ambistik PFT-CPET
Serial no.: 2024xxxxx / 2025xxxxx
Version: 1 | Release date: 31 January 2022
Page 63
12.4.4
Recommended Safety Distances for Non-Life-Supporting
ME Systems
Recommended safety distance between portable and mobile RF communication devices
and the Ambistik PFT / Ambistik CPET
The Ambistik PFT / Ambistik CPET is determined for operation in an electromagnetic
environment in which the RF disturbances are controlled. The user / operator of the Ambistik
PFT / Ambistik CPET may help to avoid electromagnetic interference by keeping the minimum
distance between portable and mobile RF telecommunication devices (transmitters) and the
Ambistik PFT / Ambistik CPET, depending on the emitted power of the communication device
as indicated below:
Power rating
of the transmitter
[W]
Safety distance,
depending on the transmitter frequency
[m]
150 kHz to 80 MHz
𝑑𝑑
= 1.17
√𝑃𝑃
80 MHz to 800 MHz
𝑑𝑑
= 1.17
√𝑃𝑃
800 MHz to 2.7 GHz
𝑑𝑑
= 2.33
√𝑃𝑃
0.01
0.12
0.12
0.23
0.1
0.37
0.37
0.74
1
1.2
1.2
2.3
10
3.7
3.7
7.4
100
12
12
23
For transmitters whose maximum power rating is not given in the table above, the recommended
safety distance d in meters (m) can be determined using the equations given with each column,
where P is the maximum power rating of the transmitter in watts (W) as specified by the
manufacturer.
Note 1: The higher frequency range shall be used at 80 MHz and 800 MHz.
Note 2: These guidelines may not be applicable in all cases. The propagation of electromagnetic
parameters is influenced by absorptions and reflections from buildings, objects and people.
