30
31
Table 3: Guidance & Declaration - electromagnetic
immunity concerning Conducted RF & Radiated RF
Guidance & Declaration - Electromagnetic immunity
The models WL1 and WL3 are intended for use in the
electromagnetic environment specified below. The customer or
the user should assure that it is used in such an environment.
Immunity
test
IEC
60601
test
level
Comp-
liance
level
Electromagnetic environment -
guidance
Portable and mobile RF
communications equipment
should be used no closer to
any part of the model WL1 and
WL3, including cables, than the
recommended separation distance
calculated from the equation
applicable to the frequency of the
transmitter.
Recommended separation
distance
Conducted
RF lEC
61000-4-6
3
Vrms
150
kHz
to 80
MHz
3V
3V
Radiated
RF lEC
61000-4-3
3 V/m
80
MHz
to 2.5
GHz
3 V/m
d=1.2×P
1/2
80 MHz to 800 MHz
d=2.3×P
1/2
800 MHz to 2.5 GHz
where P is the maximum output
power rating of the transmitter
In watts (W) according to the
transmitter manufacturer and d
Is the recommended separation
distance in meters (m).
Field strengths from fixed RF
transmitters, as determined
by an electromagnetic site
survey,
a
should be less than
the compliance level in each
frequency range.
b
Interference may occur In the
vicinity of equipment marked with
the following symbol:
NOTE I At 80 MHz end 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 structures, objects and people.
a
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 the models
WL1 and WL3 are used exceeds the applicable RF compliance
level above, the models WL1 and WL3 should be observed to
verify normal operation. If abnormal performance is observed,
additional measures may be necessary, such as reorienting or
relocating the models WL1 and WL3.
b
Over the frequency range 150 kHz to 80 MHz, field strengths
should be less than 3V/m.
Table 4: Recommended separation distances
between portable and mobile RF communications
equipment and the models WL1 and WL3
Recommended separation distances between
portable and mobile RF communications equipment and the
models WL1 and WL3
The models WL1 and WL3 are intended for use in
electromagnetic environment in which radiated RF disturbances
is controlled. The customer or the user of the models WL1
and WL3 can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile
RF communications equipment (transmitters) and the models
WL1 and WL3 as recommended below, according to the
maximum output power of the communications equipment.
Rated maximum
output power
of transmitter
W
Separation distance according to frequency
of transmitter
m
150kHz to
80MHz
d=1.2×P
1/2
80MHz to
800MHz
d=1.2×P
1/2
800MHz to
2,5GHz
d=2.3×P
1/2
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 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) accordable to the transmitter
manufacturer.
NOTE I 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 637-005
Page 46: ...46 ...
