12
Electromagnetic
compatibility
a
The field strength of fixed transmitters, such as radio telephone (mobile / wireless) and land mobile
radio base stations, amateur radio systems, AM/FM radio communication systems and TV systems cannot
in theory be evaluated with accuracy. To obtain an evaluation of the electro- magnetic environment due
to fixed RF transmitters, measurements must be taken of the site.
If a field strength measured in the environment in which this camera is used exceeds the applicable
compliance levels shown above, this camera must be checked for proper functioning.
If it observed to be functioning abnormally, additional measures must be taken, such as a change of
direction or repositioning of the referencing equipment.
b
Outside of the 150 kHz to 80 MHz frequency band, the field strength must be lower than 3 V/m.
Recommended separation distances between portable and mobile RF communication
systems and this camera
This camera is intended for use in an electromagnetic environment in which the RF interference
produced is controlled. The user of this camera can help avoid electromagnetic interference by
maintaining a minimum distance between the portable and mobile RF communication systems
(transmitters) and this camera, as recommended below, based on the maximum output strength of
the communication equipment.
Assigned maximum
output strength of the
transmitter in W
0.01
0.1
1
10
100
For transmitters for which the maximum output strength is not shown in the table above, the recom-
mended separation distance d, in metres (m) can be determined by using the equation applicable to the
frequency of the transmitter, where P is the maximum output strength of the transmitter in Watts (W)
assigned by the manufacturer of the transmitter.
Note 1:
At 80 MHz and 800 MHz, the separation distance given in the higher frequency band applies.
Note 2:
These recommendations may not be applicable in all situations. The propagation of electromagnetic
waves is modified by absorption and reflection due to structures, objects and people.
Separation distance depending on the frequency of the transmitter m
150 kHz to 80 MHz
d = 1,16 √ P
0.116
0.366
1.16
3.66
11.6
80 MHz to 800 MHz
d = 1,16 √ P
0.116
0.366
1.16
3.66
11.6
800 MHz to 2.5 GHz
d = 2,33 √ P
0.233
0.736
2.33
7.36
23.3
33