12
13
Recommended Separation Distance Between
Portable and Mobile RF Communications Equipment
and Medline Electrical Clipper Charging Base,
DYND70800/DYND70801/DYND70802 Series
REF DYND70800/DYND70801/DYND70802 Series is intended for use in the
electromagnetic environment in which RF disturbances are controlled. The
customer or the user of REF DYND70800/DYND70801/DYND70802 Series can
help prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and
REF DYND70800/DYND70801/DYND70802 Series as recommended below,
according to the maximum output power of the communications equipment.
Rated Maximum
Output Power of
Transmitter W
Separations Distance According to
Frequency of Transmitter m
150 kHz to
80 MHz
d = 1.2 √P
80 kHz to
800 MHz
d = 1.2 √P
800 kHz to
2.5 GHz
d = 2.3 √P
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) 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.
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.
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 REF DYND70800/
DYND70801/DYND70802 Series is used exceeds the applicable RF compliance
level above, REF DYND70800/DYND70801/DYND70802 Series should be
observed to verify normal operation. If abnormal performance is observed,
additional measures may be necessary, such as reorienting or relocation REF
DYND70800/DYND70801/DYND70802 Series.
b.
Over the frequency range 150 kHz to 80 MHz, field strengths should be less
than 2 V/m.
