DN:KD-927-SMSY01 V2.0 Operation Guide
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fixed RF transmitters, an electromagnetic site survey should be considered. If the measured field
strength in the location in which the KD-927 is used exceeds the applicable RF compliance level
above, the KD-927 should be observed to verify normal operation. If abnormal performance is
observed, additional measures may be necessary, such as re-orienting or relocating the KD-927.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3V/m.
Table 4
For ME EQUIPMENT and ME SYSTEMS that are not LIFE-SUPPORTING
Recommended separation distances between
portable and mobile RF communications equipment and the KD-927
The KD-927 is intended for use in an electromagnetic environment in which radiated RF
disturbances are controlled. The customer or the user of the KD-927 can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the KD-927 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
150 kHz to 80 MHz
80 MHz to 800 MHz
800 MHz to 2,5 GHz
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 determined 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.
P
d
2
.
1
=
P
d
2
.
1
=
P
d
3
.
2
=