Electromagnetic Emissions and Immunity Information
Page 14
2102322-111 REV 1
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.
NOTES:
•
At 80 MHz and 800 MHz, the higher frequency range applies.
•
These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from
structures, objects, and people.
Table 4: Recommended Separation Distances
The following table details the recommended separation distances between portable and mobile RF communications equipment and
NR recorder.
This device is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. Users of this
device can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF
communication equipment (transmitters) and the device as recommended below, according to maximum output power of the
communications equipment.
Separation Distance According to Frequency of Transmitter(m)
Rated Maximum Output Power of
Transmitter
W
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
0.37
0.37
0.74
1
1.2
1.2
2.3
10
3.7
3.7
7.4
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.
NOTES:
At 80 MHz and 800 MHz, the higher frequency range applies.
These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from
structures, objects, and people.
