20
Appendix
21
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 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 device
is used exceeds the applicable RF
compliance level above, the device
should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be
necessary, such as reorienting or relocating the device.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
0.01
N/A
N/A
N/A
N/A
N/A
0.117
0.369
1.167
3.690
11.67
0.233
0.738
2.333
7.377
23.33
0.1
1
10
150 kHz to 80 MHz
d = 1.167
80 MHz to 800 MHz
d = 1.167
800 MHz to 2.5 GHz
d = 2.333
Table 6 – Recommended separation distances between portable and mobile RF
communications equipment and the ME EQUIPMENT or ME SYSTEM –
for ME EQUIPMENT and ME SYSTEMS that are not LIFE-SUPPORTING
Recommended separation distances between
portable and mobile RF communications equipment at the LS203-B
The device is intended for use in an electromagnetic environment in which radiated
RF disturbances are controlled. The customer or the user of the device can help
prevent electromagnetic interference by maintaining a minimum distance between
portable and mobile RF communications equipment (transmitters) and the device 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)
100
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.
Appendix
