PRS 500 B User Manual
5014-0-0002
PROTEC GmbH & Co. KG, In den Dorfwiesen 14, 71720 Oberstenfeld, Germany
32 from 42
P
d
×
=
3
.
2
800 MHz to
2.5GHz
P
d
×
=
2
.
1
Where
P
is the maximum output
rating of the transmitter in watts
(W) according to the transmitter
manufacturer and
d
is the
recommended separation distance
in meters (m).
Field strengths for fixed RF
transmitter, as determined by an
electromagnetic site survey, should
be less than the compliance level in
each frequency range
Interference may occur in the
vicinity of equipment marked with
the following symbol:
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 structure, objects and people.
a
Fields strengths from fixed transmitters, such as base stations for radio 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 outside the shielded
location in which the radiographic system is used exceeds [field strength] V/m, observe the
radiographic system to verify normal operation. If abnormal performance is observed, additional
measures may be necessary, such as relocating the radiographic system or using a shielded location
with a higher RF shielding effectiveness and filter attenuation
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
The radiographic system PRS 500 B is intended for use in an electromagnetic environment in which
radiated RF disturbances are controlled. The customer or the user of the radiographic system can help
prevent electromagnetic interference by maintaining a minimum distance between portable and mobile
RF communications equipment (transmitter) and the radiographic system as recommended below,
according to the maximum output power of the communications equipment.
Rated maximum
output power of the
transmitter
(W)
Separation distance according to frequency of transmitter
(m)
150kHz to 80MHz
P
d
×
=
2
.
1
80MHz to 800MHz
P
d
×
=
2
.
1
800MHz to 2.5GHz
P
d
×
=
3
.
2
0.01
0.12
0.12
0.23
0.1
0.38
0.38
0.73
1
1.2
1.2
2.3
10
3.8
3.8
7.3
100
12
12
23
For transmitters rated at the maximum output power not listed above, the recommended separation
distance
d
in meters (m) can be estimated 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.
