Table of Contents
Electromagnetic Compatibility
NOTE:
These guidelines may not apply in all situations. Electromagnetic propagation is
affected by reflection from structures, objects, and people.
1.
2.
Recommended Separation Distances
The table below provides the recommended separation distances (in meters) between
portable and mobile RF communication equipment and the device described in this
manual.
The device is intended for use in the electromagnetic environment on 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 in the following table, according to the maximum output power of
the communications equipment.
Rated Maximum
Output Power of
Transmitter in
Watts
0.01
100
NOTE:
At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
For transmitters rated at a maximum output power not listed in the previous table,
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:
These guidelines may not apply in all situations. Electromagnetic propagation is
affected by absorption and reflection from structures, objects and people.
148
Field strengths from fixed transmitters, such as base stations for radio
(cellular/cordless) telephones and land mobile 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 equipment is used exceeds the applicable
RF compliance level above, the equipment should be observed to verify
normal operation. If abnormal performance is observed, additional measures
may be necessary, such as re-orienting or relocating the equipment.
Over the frequency range 150 KHz to 80 MHz, field strengths should be less
than 3 V/m.
Separation Distance in Meters (m) According to Frequency of Transmitter
150 kHz to 80
MHz outside ISM
bands
d=1.2
0.12
0.1
0.38
1
1.2
10
3.8
12
150 kHz to 80
MHz in ISM
80 MHz to 800
bands
d=1.2
0.12
0.38
1.2
3.8
12
MAC™ 3500
800 MHz to 2.5
GHz
MHz
d=1.2
d=2.3
0.12
0.23
0.38
0.73
1.2
2.3
3.8
7.3
12
23
2046275-019H
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