User's Manual
Table Of Contents
- Low-Power Long Range (LoRa®) Technology Gateway Module for US (LG9271) and EU (LG8271)
- 1.0 Device Overview
- 2.0 General Specifications
- TABLE 2-1: General Specification
- TABLE 2-2: Electrical Characteristics
- TABLE 2-3: RF Receiver Characteristics
- TABLE 2-4: LoRa Technology Data Rate (bps) and Sensitivity versus Spreading Factor (SF)
- TABLE 2-5: CURRENT CONSUMPTION (3.3V)
- TABLE 2-6: Module Dimensions
- TABLE 2-7: RF OUTPUT POWER (dBm) versus TX POWER SETTING (nominal)
- 3.0 Typical Hardware Connections
- 4.0 Application Information
- 5.0 Regulatory Approval
- Appendix A: Revision History
- Worldwide Sales and Service
LG8271/LG9271
DS00000000A-page 18 Preliminary 2017 Microchip Technology Inc.
User manuals for transmitters equipped with
detachable 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.
5.3.2 RF EXPOSURE
All transmitters regulated by IC must comply with RF
exposure requirements listed in RSS-102 - Radio Fre-
quency (RF) Exposure Compliance of Radiocommuni-
cation Apparatus (All Frequency Bands). Currently this
device is approved for use for when 20 cm can be
maintained between the antenna and users.
Specific Absorption Rate (SAR) evaluation is required
if the separation distance between the user and/or
bystander and the antenna and/or radiating element of
the device is less than or equal to 20 cm. Exceptions
are listed in RSS-102. Note that integration < 20 cm will
require further certification with IC such as a Multiple
listing and Class IV Permissive Change application.
Tous les émetteurs régulés par Industrie Canada
doivent ętre conformes à la notice RSS-102 d'Industrie
Canada concernant la Conformité des appareils de
radiocommunication aux limites d'exposition humaine
aux radiofréquences (toutes bandes de fréquences).
Ce produit est ainsi approuvé pour une utilisation d'au
moins 20 cm entre l'antenne et toute personne à prox-
imité.
Une évaluation du Débit d'Absorption Spécifique (DAS)
est requise si cette distance de séparation est
inférieure ou égale à 20 cm. Des exceptions sont toute-
fois répertoriés dans la notice RSS-102. Mais il est
souligné que l'utilisation d'un dispositif à moins de 20
cm nécessite une certification supplémentaire avec
Industrie Canada, comme un complément d'informa-
tion et l'application à la notice de Changement Permis-
sif de Classe IV.
5.3.3 APPROVED EXTERNAL ANTENNA
TYPES
Transmitter Antenna (from Section 8.3 RSS-Gen, Issue
4, November 13, 2014):
The LG9271 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
measurement or on data from the antenna
manufacturer. For transmitters of output power greater
than 10 milliwatts, the total antenna gain shall be added
to the measured RF output power to demonstrate
compliance to the specified radiated power limits.
Testing of the LG9271 module was performed with the
antenna types listed in Ta ble 4-1 Teste d Ext e r n al
Antenna Types.
5.3.4 HELPFUL WEB SITES
Industry Canada: http://www.ic.gc.ca/
This radio transmitter (identify the device by certifica-
tion number, or model number if Category II) has been
approved by Industry Canada to operate with the
antenna types listed below with the maximum permis-
sible 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 Can-
ada. 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'établisse-
ment d'une communication satisfaisante.