44
ABPM with custo screen 300 and custo diagnostic | GEB 0154 – DK 1055 | Version 002 – 05.06.2013 | custo med GmbH
07
Product information
Recommended protective distances between portable
and mobile HF telecommunication devices and custo screen 300
custo screen 300 is designed for the operation in an electromagnetic environment in which the
HF transients can be controlled. The user can help avoid electromagnetic interferences by maintaining the
minimum distance between portable and mobile HF telecommunication devices (transmitters) and the
device – depending on the initial performance of the communication device, as indicated below.
For transmitters whose maximum nominal power is not indicated in the above table, the recommended
protective distance d can be determined in meters (m), using the equation affiliated with the correspond-
ing 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/U1) √P
Not applicable
Not applicable
Not applicable
Not applicable
Not applicable
80 MHz to 800 MHz
d= (3.5/E
1
) √P
0.12
0.38
1.20
3.79
12.00
800 MHz to 2.5 GHz
d= (7/E
1
) √P
0.23
0.73
2.30
7.27
23.00
Summary of Contents for custo screen 300
Page 2: ......
