MRF89XAM9A_12 Datasheet, PDF (18/36 Pages) Microchip Technology – 915 MHz Ultra Low-Power Sub-GHz Transceiver Module

MRF89XAM9A
3.1.1.2 OOK Modulation
The following settings configure the MRF89XAM9A for
narrowband operation that conform to the requirements
of the part 15.249. The part 15.249 requires a much
lower power setting than it is allowed in the part 15.247.
These settings are good for applications that require
lower transmit power current consumption and shorter
transmit distances:
• Transmit Power Maximum Setting: 1 dBm
• Bit Rate Maximum Setting: 28 kbps
• Frequency Deviation Setting: 200 kHz
• Lower Frequency Setting: 902.330 MHz
• Upper Frequency Setting: 927.500 MHz
3.1.2 RF EXPOSURE
All transmitters regulated by the Federal
Communications Commission (FCC) must comply with
RF exposure requirements. OET Bulletin 65
“Evaluating Compliance with FCC Guidelines for
Human Exposure to Radio Frequency Electromagnetic
Fields” provides assistance in determining whether
proposed or existing transmitting facilities, operations
or devices comply with limits for human exposure to RF
fields adopted by the FCC. The bulletin offers
guidelines and suggestions for evaluating compliance.
If appropriate, compliance with exposure guidelines for
mobile and unlicensed devices can be accomplished
by using warning labels and by providing informations
concerning minimum separation distances from
transmitting structures and proper installation of
antennas.
The following statement must be included as a Caution
statement in manuals and OEM products to alert users
of the FCC RF Exposure compliance:
To satisfy FCC RF Exposure requirements for mobile
and base station transmission devices, a separation
distance of 20 cm or more should be maintained
between the antenna of this device and persons
during operation. To ensure compliance, operation at
closer than this distance is not recommended.
The antenna(s) used for this transmitter must not be
co-located or operating in conjunction with any other
antenna or transmitter.
If the MRF89XAM9A module is used in a portable
application (antenna is less than 20 cm from persons
during operation), the integrator is responsible for
performing the Specific Absorption Rate (SAR) testing
in accordance with FCC rules 2.1091.
3.1.3 HELPFUL WEB SITES
Federal Communications Commission (FCC)
http://www.fcc.gov
DS75017B-page 18
Preliminary
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