User Manual

MRF24J40MC
DS00000A-page 22 Preliminary © 2011 Microchip Technology Inc.
3.3.1 MRF24J40MC SETTINGS
To meet ETSI requirements, the following settings must
be observed by the integrator:
• The MRF24J40MC transmit power setting shall
not exceed 10.7 dBm (RFCON3 0x203<7:3> =
00111). Refer to Section 1.3.4, Transmit Power
Settings. This is to meet the requirements of ETSI
EN 300 328 v1.7.1 (2006-10), Maximum e.i.r.p.
spectral density limit, Section 4.3.2.2, “For
wideband modulations other then FHSS (DSSS,
OFDM, etc.), the maximum e.i.r.p. spectral
density is limited to 10 mW per MHz”.
• Only channels 11 through 25 may be selected
(RFCON0 0x200).
3.3.2 APPROVED EXTERNAL ANTENNA
TYPES
The MRF24J40MC module was tested with the
antenna types listed in Table 3-4. In order to use the
emissions testing listed in Table 3-3, the same antenna
type, antenna gain (equal to or less than), and
MRF24J40MC power setting as listed in Table 3-4
should be used. Additional emissions testing will be
required by the integrator for any antenna types not
tested with the module and listed in Table 3-4.
3.3.3 HELPFUL WEB SITES
A helpful document that can be used as a starting point
in understanding the use of Short Range Devices
(SRD) in Europe is the European Radio
Communications Committee (ERC) Recommendation
70-03 E, downloadable from the European Radio
Communications Office (ERO): http://www.ero.dk/.
Radio and Telecommunications Terminal Equipment
(R&TTE):
http://ec.europa.eu/enterprise/rtte/index_en.htm
European Conference of Postal and Telecommunications
Administrations (CEPT): http://www.cept.org
European Telecommunications Standards Institute
(ETSI): http://www.etsi.org
European Radio Communications Office (ERO):
http://www.ero.dk
/
Note 1: Typical output power at antenna connector J1, Channel 11, 50Ω impedance.
TABLE 3-4: APPROVED EXTERNAL ANTENNA TYPES
Type Manufacture Part Number Gain Output Power
(1)
Whip, Dipole Aristotle Enterprises Inc. RFA-02-5-F7H1-70B-150 5 dBi 10.7 dBm