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MRF24J40MD Datasheet(PDF) 21 Page - Microchip Technology |
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MRF24J40MD Datasheet(HTML) 21 Page - Microchip Technology |
21 / 34 page 2014 Microchip Technology Inc. Advance Information DS70005173A-page 21 MRF24J40MD/ME Transmitter Antenna (from Section 7.1.2 RSS-Gen, Issue 3, December 2010): User manuals for transmit- ters shall display the following notice in a conspicuous location: The above notice may be affixed to the device instead of displayed in the user manual. User manuals for transmitters equipped with detach- able antennas shall also contain the following notice in a conspicuous location. Immediately following the above notice, the manufacturer shall provide a list of all antenna types approved for use with the transmitter, indicating the maximum permissible antenna gain (in dBi) and required impedance for each. 3.2.2 APPROVED EXTERNAL ANTENNA TYPES Transmitter Antenna (from Section 7.1.2 RSS-Gen, Issue 3, December 2010): The MRF24J40MD/ME module can only be sold or operated with antennas with which it was approved. Transmitter may be approved with multiple antenna types. An antenna type comprises antennas having similar in-band and out-of-band radiation patterns. Testing shall be performed using the highest gain antenna of each combination of transmitter and antenna type for which approval is being sought, with the transmitter output power set at the maximum level. Any antenna of the same type having equal or lesser gain as an antenna that had been successfully tested with the transmitter, will also be considered approved with the transmitter, and may be used and marketed with the transmitter. When a measurement at the antenna connector is used to determine RF output power, the effective gain of the device's antenna shall be stated, based on mea- surement or on data from the antenna manufacturer. For transmitters of output power greater than 10 milli- watts, the total antenna gain shall be added to the mea- sured RF output power to demonstrate compliance to the specified radiated power limits. Testing of the MRF24J40MD/ME module was per- formed with the antenna types listed in Table 2-1 Tested External Antenna Types 3.2.3 HELPFUL WEB SITES Industry Canada: http://www.ic.gc.ca/ Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication. Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante. This radio transmitter (identify the device by certifi- cation number, or model number if Category II) has been approved by Industry Canada to operate with the antenna types listed below with the maximum permissible gain and required antenna impedance for each antenna type indicated. Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited for use with this device. Conformément à la réglementation d'Industrie Can- ada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouil- lage radioélectrique à l'intention des autres utilisa- teurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope rayonnée équiva- lente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfais- ante. |
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