60
a
b
TECHNICAL CHARACTERISTICS
ELECTROMAGNETIC IMMUNITY
NOTE 1:
UT is the a.c mains voltage prior to application of the test level.
NOTE 2:
At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 3:
These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption an reflection from
structures, objects and peoples.
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) 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 in the location in which
is used exceed the applicable RF compliance level above,
should be observed
to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as reorienting or
relocating
.
Over the frequency range 150 kHz to 80 MHz, field strength should be less than 3 V/m.
RECOMMENDED SEPARATION DISTANCES BETWEEN PORTABLE AND MOBILE RF COMMUNICATIONS EQUIP-
MENT AND
is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or user
of
can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF commu-
nication equipment (transmitters) and
, as recommended below, according to the maximum output power of the communica-
tions equipment.
Rates max. output power of
transmitter - (W)
Separation distance according to frequency of transmitter (m)
150 Hz to 80 MHz (d = 1,2 √P)
80 MHz to 800 MHz (d = 1,2 √P)
800 MHz to 2,5 GHz (d = 2,3 √P)
0,01
0,12
0,12
0,24
0,1
0,37
0,37
0,74
1
1,20
1,20
2,24
10
3,70
3,70
7,40
100
12
12
24
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in meters (m) can
be estimated using 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.
NOTE 1:
At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
NOTE 2:
These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from
structures, objects and people.
Summary of Contents for WE-O
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