MHW 0002 – DK 1693 | Version 001 – 14/09/2017 | custo med GmbH
2
[2] Resting and Stress ECG hardware, custo cardio 200 |
page 20
Resting and Stress ECG
Hardware, description of device for custo cardio 200
Recommended protective distances between portable
and mobile HF telecommunication devices and custo cardio 200
custo cardio 200 is designed for use in an electromagnetic environment in which the HF transients can be con-
trolled. The user can help avoid electromagnetic interference by maintaining the minimum distance between
portable and mobile HF telecommunication devices (transmitters) and the device – depending on the power
output of the communication device, as indicated below.
For transmitters whose maximum nominal power is not indicated in the above table, the recommended protec-
tive distance d can be determined in meters (m), using the equation affiliated with the corresponding column.
P is the maximum nominal power of the transmitter in watt (W) according to the indications of the manufacturer
of the transmitter.
COMMENT 1:
With 80 MHz and 800 MHz the higher frequency range is valid.
COMMENT 2:
These guidelines may not apply in every case. The propagation of electromagnetic variables is influenced by
absorptions and reflections of buildings, objects and people.
Protective distance depending on the transmitting frequency in m
Nominal power of the transmitter
W
0.01
0.1
1
10
100
150 kHz to 80 MHz
d= (3.5/U
1
) √P
0.12
0.38
1.2
3.8
12
80 MHz to 800 MHz
d= (3.5/E
1
) √P
0.12
0.38
1.2
3.8
12
800 MHz to 2.5 GHz
d= (7/E
1
) √P
0.23
0.73
2.3
7.3
23
