Cyclone 900 MHz User Manual
R 900.1
NOTICES
Federal Communications Commission (FCC) information:
This device complies with part 15 of the FCC Rules and Regulations. Operation is subject to the
following two conditions: (1) This device may not cause harmful interference, and (2) This device
must accept any interference received, including interference that may cause undesired
operation.
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses, and can
radiate radio-frequency energy and, if not installed and used
in accordance with these instructions, may cause harmful interference to radio communications.
If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment on and off, the user is encouraged to correct the
interference by one or more of the following measures:
•
Increase the separation between the affected equipment and the unit;
•
Connect the affected equipment to a power outlet on a different circuit from that which the
receiver is connected to;
•
Consult the dealer and/or experienced radio/TV technician for help.
This device must be professionally installed.
Exposure Note
The antenna of a Cyclone 900 MHz module must be installed to provide a separation distance of at least 60
cm (approx 24 inches) from all persons. When so installed, the module’s RF field is within Health Canada
limits for the general population; consult Safety Code 6, obtainable from Health Canada’s website
http://www.hc-sc.gc.ca/rpb. Per Health Canada Safety Code 6, the installer of this radio equipment must
ensure that the antenna is located or pointed such that it does not emit RF field in excess of Health Canada
limits for the general population.
Currently certified 900 MHz antennas have an antenna gain of 9 dBi, which means they are limited to a
maximum RMS power of 0.4 W (26 dBm) to remain within the regulatory limit of 4 W (36 dBm) for the 900
MHz frequency band.
The applicable power density exposure limit is 6 Watt/m
2
, according to the FCC OET Bulletin 65, the ICNIRP
guidelines, and the Health Canada Safety Code 6. The corresponding compliance distances referenced
above have been determined by assuming worst- case scenarios. The peak power density (
S
) in the far-field
of a radio-frequency source with rms transmit power
P
and antenna gain
G
at a distance d is
In the case of a 900 MHz Cyclone SM or AP with an antenna gain of 9 dBi (a factor of 9) and correctly
entered in the user interface as a 9 dBi antenna, the peak power density equals the exposure limit at a
distance of 18 cm. A power compliance margin of over 11 is artificially introduced by setting the distance to
60 cm.
The compliance distance is greatly overestimated in these cases because the far-field equation neglects the
physical dimension of the antenna, which is modeled as a point-source.
FCC ID: QSX900ISM
Technical specifications were met.
