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• Small form factor, SMT module 25mm x 19mm
• Same footprint and pin-out as ETRX357-LRS
• Side Castellations for easy soldering and inspection
• Two antenna options: Integrated chip antenna or U.FL
coaxial connector
• Based on 32-bit ARM® Cortex-M3
• Industry standard JTAG Programming and real time
network level debugging via the Ember Debug Port
• Up to 512kB of flash and 64kbytes of RAM
• Lowest Deep Sleep Current of sub 1µA with retained
RAM and GPIO and multiple sleep modes
• Ultra Wide supply voltage range (2.1 to 3.6V)
• Optional 32.768kHz watch crystal can be added
externally
• Module ships with standard Telegesis AT-style
command interface based on the ZigBee PRO feature
set
• Can act as an End Device, Router or Coordinator
• 22 general-purpose I/O lines including analogue inputs
• Firmware upgrades via serial port or over the air
(password protected)
• Hardware supported encryption (AES-128)
• CE and FCC and IC compliance, IC and FCC modular
approval
• Operating temperature range: -40°C to +85°C
• Standard version without LNA and PA available in the
same form factor
The Telegesis ETRX358x-LRS and ETRX358xHR-LRS
modules are low power 2.4GHz ZigBee modules with an added
frontend module (SiGe SE2432L) containing both PA and LNA
for highest possible link budget.
Based on the latest Ember EM358x family of single chip ZigBee
solutions the new long range modules are footprint compatible
with the entire Telegesis ETRX3 family, thus representing a
drop-in replacement for all applications where a high link
budget is required.
The module’s unique AT-style command line interface allows
designers to quickly integrate ZigBee technology without
complex software engineering. For custom application
development the ETRX358x series integrates with ease into
Ember’s InSight development environment.
• ZigBee Smart Energy applications
• Wireless Alarms and Security
• Home/Building Automation
• Wireless Sensor Networks
• M2M Industrial Controls
• Lighting and ventilation control
• Remote monitoring
• Environmental monitoring and control
• Enhancement kit available to upgrade existing
Telegesis and Ember development kits to be used with
the new ETRX358x family
•AT-style software interface command dictionary can be
modified for high volume customers.
•Custom software development available upon request.
AT+BCAST Send a Broadcast
AT+UCAST:<address> Send a Unicast
AT+EN Establish PAN network
AT+JN Join PAN
At power-up the last configuration is loaded from non volatile S-Registers, which can eliminate the need for an
additional host controller.
• Based on the Silicon Labs EM358x family of single chip
ZigBee® SoCs
• 2.4GHz ISM Band
• 250kbit/s over the air data rate – NB: actual usable data
throughput with ZigBee is about 20kbps
• 15 channels (IEEE802.15.4 Channel 11 to 25)
• SiGe SE2432L integrated PA and LNA
• +20dBm output power (adjustable down to -41dBm)
• High sensitivity of -106dBm typ. @ 1% packet error rate
This document describes the Telegesis ETRX358x-LRS and ETRX358xHR-LRS ZigBee long
range modules which have been designed to be easily integrated into another device and to
provide a fast, simple and low cost wireless mesh networking interface.
The Telegesis ETRX3 series modules are based on the Silicon Labs ZigBee compliant platform
consisting of the single chip family of EM358x SoCs combined with the ZigBee PRO compliant
EmberZNet meshing stack. Integration into a wide range of applications is made easy using a
simple AT style command interface and advanced hardware design.
The configurable functionality of the Telegesis AT Commandset often allows the ETRX3 series
ZigBee modules to be used without an additional host microcontroller saving even more integration
time and costs. In addition to the Telegesis AT Commandset, the ETRX358x-LRS and
ETRX358xHR-LRS modules can be used with custom-built firmware whilst representing an ideal
platform for custom firmware development in conjunction with the Silicon Labs ZigBee
development kits.
No RF experience or expertise is required to add this powerful wireless networking capability to
your products. The ETRX358x-LRS and ETRX358xHR-LRS offer fast integration opportunities
and the shortest possible time to market for your product.
1.1 Hardware Description
The main building blocks of the ETRX358x-LRS and ETRX358xHR-LRS are the single chip
EM358x SoC from Silicon Labs, a SiGe SE2432L frontend module combining a Power Amplifier
with a Low Noise Amplifier, a 24MHz reference crystal and RF front-end circuitry optimized for best
RF performance. The modules are available with on-board antenna or alternatively a U.FL
connector for attaching external antennae. Modules with the U.FL connector are identified by the
“HR” suffix.
The integrated antenna is an Antenova Rufa, and details of the radiation pattern and further data
are available from the Antenova website [5].
The LNA and RF power amplifier of the LRS devices improve the output power by 12dB and the
sensitivity by 5dB which will increase the range by approximately 700% relative to the standard
devices (where local regulations permit the use of the maximum output power).
The ETRX358x and ETRX358xHR are used for ZigBee (www.zigbee.org) applications. In case it is
desired to develop custom firmware instead of using the pre-loaded AT-Command interface, the
Silicon Labs toolchain, consisting of Ember Desktop together with a comprehensive integrated
development environment (IDE), is required.
The ETRX358x-LRS and ETRX358xHR-LRS have been designed to meet all national regulations
for world-wide use. In particular the following certifications have been obtained:
2.1 FCC Approvals
The Telegesis ETRX358x-LRS family with integrated Antenna as well as the ETRX358xHR-LRS
family including the antennas listed in able 2 and the power levels listed in section 10.2 have been
tested to comply with FCC CFR Part 15 (USA) The devices meet the requirements for modular
transmitter approval as detailed in the FCC public notice DA00.1407.transmitter.
FCC statement:
This device complies with Part 15 of the FCC rules. 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 module complies with the USA SAR requirements and is not intended to be operated within
20cm of the body. The following statement must be included as a CAUTION statement in manuals
for OEM products to alert users on FCC RF exposure compliance
“WARNING: To satisfy FCC RF exposure requirements for mobile transmitting devices, a
separation distance of 20cm or more should be maintained between the antenna of this
device and persons during operation. To ensure compliance, operations at closer
distances than this are not recommended.”
1
2
BT-Stubby
(straight)
BT-Stubby
(right-angle)
EAD Ltd. [6] ¼ Wave
EAD Ltd. [6] ¼ Wave
50Ω
50Ω
0dBi
0dBi
3 CJ-2400-6603 Chang Jia ½ Wave 50 Ω2.0dBi
4
Rufa (on
board)
Antenova Chip
Table 2. Approved Antennae
50Ω2.1dBi
(peak)
An end user deploying an ETRX358x-LRS or an ETRX358xHR-LRS module together with an
antenna as listed in Table 2 is not required to obtain a new authorization for the module – BUT this
does not preclude the possibility that some other form of authorization or testing may be required
for the end product depending upon local territorial regulations.
The FCC requires the user to be notified that any changes or modifications made to this device
that are not expressly approved by Telegesis (UK) Ltd. may void the user's authority to operate the
equipment.
When using the ETRX358x-LRS with approved antennae, it is required to prevent end-users from
replacing them with non-approved ones.
The antenna(s) must be installed such that a minimum separation distance of 20cm is maintained
between the radiator (antenna) and all persons at all times.
2.1.1 FCC Labelling Requirements
When integrating the ETRX358x-LRS or ETRX358xHR-LRS families into a product it must be
ensured that the FCC labelling requirements are met. This includes a clearly visible label on the
outside of the finished product specifying the Telegesis FCC identifier (FCC ID: S4GEM358L) as
well as the notice above. This exterior label can use wording such as “Contains Transmitter Module FCC ID: S4GEM358L” or “Contains FCC ID: S4GEM358L” although any similar wording
that expresses the same meaning may be used.
2.2 IC (Industry Canada) Approvals
The Telegesis ETRX358x-LRS family with integrated Antenna as well as the ETRX358xHR-LRS
family have been approved by Industry Canada to operate with the antenna types listed in Table 2
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.
IC-ID: 8735A-EM358L
• This device complies with Industry Canada license-exempt RSS standard(s). Operation is
subject to the following two conditions: (1) this device may not cause interference, and (2)
this device must accept any interference, including interference that may cause undesired
operation of the device.
• 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
permitted for successful communication.
• To comply with Industry Canada RF radiation exposure limits for general population, the
antenna(s) used for this transmitter must be installed such that a minimum separation
distance of 20cm is maintained between the radiator (antenna) and all persons at all times
and must not be co-located or operating in conjunction with any other antenna or transmitter
• This device has been designed to operate with the antennas listed in Table 2, and having a
maximum gain of 2.1 dBi. Antennas not included in this list or having a gain greater than 2.1
dBi are strictly prohibited for use with this device. The required antenna impedance is 50
ohms.
French Statements
• 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.
• Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils
radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1)
l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout
brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le
fonctionnement.
OEM Responsibilities
The ETRX358x-LRS and ETRX358x-LRS families of module have been certified for integration into
products only by OEM integrators under the following conditions:
1. The antenna(s) must be installed such that a minimum separation distance of 20cm is
maintained between the radiator (antenna) and all persons at all times.
2. The transmitter module must not be co-located or operating in conjunction with any other
antenna or transmitter.
As long as the two conditions above are met, further transmitter testing will not be required.
However, the OEM integrator is still responsible for testing their end-product for any additional
compliance requirements required with this module installed (for example, digital device emissions,
PC peripheral requirements, etc.).
IMPORTANT NOTE: In the event that these conditions can not be met (for certain configurations
or co-location with another transmitter), then Industry Canada certification is no longer considered
valid and the IC Certification Number can not be used on the final product. In these circumstances,
the OEM integrator will be responsible for re-evaluating the end product (including the transmitter)
and obtaining a separate Industry Canada authorization.
2.2.1 IC Labelling Requirements
The ETRX358x-LRS and ETRX358xHR-LRS family modules are labelled with its own IC Certification
Number. If the IC Certification Number is not visible when the module is installed inside another device,
then the outside of the device into which the module is installed must also display a label referring to the
enclosed module. In that case, the final end product must be labelled in a visible area with the following:
“Contains Transmitter Module IC: 8735A-EM358L”
or
“Contains IC: 8735A-EM358L”
The OEM of the ETRX358x-LRS and ETRX358xHR-LRS family modules must only use the approved
antenna(s) listed above, which have been certified with this module.
The OEM integrator has to be aware not to provide information to the end user regarding how to
install or remove this RF module or change RF related parameters in the user’s manual of the end
product.
The ETRX358x and ETRX358xHR families are at a maximum power level of 21.15mW e.i.r.p.
(13.2dBm) compliant to the following standards:
• Radio: EN 300 328:V1.8.1
• EMC: EN 301 489-17:V2.2.1
• Safety: EN 60950-1:2006/A12:2011
All tests have been conducted with the antennae listed in Table 2.
If the ETRX358x-LRS and ETRX358xHR-LRS families of modules are incorporated into an OEM
product, the OEM product manufacturer must ensure compliance of the final product to the
European Harmonised EMC, and low voltage/safety standards. A Declaration of Conformity must
be issued for each of these standards and kept on file as described in the R&TTE Directive. The
final product must not exceed the specified power ratings, antenna specifications and installation
requirements as specified in this user manual. If any of these specifications are exceeded in the
final product then a submission must be made to a notified body for compliance testing to all of the
required standards.
The ‘CE’ marking must be applied to a visible location on any OEM product. For more information
please refer to http://ec.europa.eu/enterprise/faq/ce-mark.htm. Customers assume full
responsibility for learning and meeting the required guidelines for each country in their distribution
market.
2.4 Declarations of Conformity
Telegesis (UK) Ltd has issued Declarations of Conformity for all ETRX3 series ZigBee RF
Modules, which cover Radio Emissions, EMC and Safety. These documents will be available from
our website or on request
2.5 IEEE 802.15.4
IEEE 802.15.4 is a standard for low data rate, wireless networks (raw bit-rate within a radio packet
of 250kbps @2.4GHz) which focuses on low cost, low duty cycle, long primary battery life
applications as well as mains-powered applications. It is the basis for the open ZigBee Protocol.
The ZigBee Protocol is a set of standards for wireless connectivity for use between any devices
over short to medium distances. The specification was originally ratified in December 2004, paving
the way for companies to start making low-power networks a reality.
ZigBee uses an IEEE 802.15.4 radio specification running on the 2.4GHz band, plus three
additional layers for networking, security and applications. What makes the specification unique is
its use of a mesh network architecture which, in bucket chain style, passes data from one node to
the next until it lands at its destination. The network is self-healing and adapts its routing as link
quality changes or nodes move. Furthermore, nodes can be defined as End Devices which do not
act as routers, but can therefore be put into a low-power sleep state.
The enhanced version of the ZigBee standard (or ZigBee 2006) was released in December 2006,
adding new features and improvements to the only global wireless communication standard
enabling the development of easily deployable low-cost, low-power, monitoring and control
products for homes, commercial buildings and industrial plant monitoring. In 2007 the ZigBee
Alliance introduced the PRO feature-set which offers advantages over earlier feature-sets,
including
• Truly self-healing mesh networking
• Messages can now travel up to 30 hops
• Source-Routing for improved point to multipoint message transmission
• Improved security including Trust-Centre link keys
• New message types and options
The Telegesis AT Command-set, which by default ships on all ETRX3 series products is based on
the ZigBee PRO feature-set. For more information on the Telegesis AT Command-set please refer
to the separate documentation at www.telegesis.com.
The table below gives details about the pin assignment for direct SMD soldering of the ETRX3
series modules to the application board. For more information on the alternate functions please
refer to [2]. Also refer to the Telegesis AT Command-set documentation to understand how the
pre-programmed firmware makes use of the individual I/Os.
All GND pads are connected within the module, but for best RF performance all of them should be
grounded externally.
{1} Pins PB0 and PC5 of the EM357 are used internally to control the front-end module. PB0 is not
available to the user.
{2} The serial UART connections TXD, RXD, CTS and RTS are PB1, PB2, PB3 and PB4 respectively
{3} When using the Telegesis AT Command-set, RTS/CTS handshaking is selectable in firmware. See
the AT Command Manual.
{4} If PA5 is driven low at power-up or reset the module will boot up in the bootloader
{5} PA6, PA7, PB6, PB7 and PC0 can drive high current (see section 8)
{6} nRESET is level-sensitive, not edge-sensitive. The module is held in the reset state while nRESET
is low. This signal has a 30kΩ Pull-Up.
{7} ETRX3588, ETRX3586, ETRX3582 and ETRX3588HR, ETRX3586HR, ETRX3582HR variants only
Alternate functions depend on the firmware, but the Telegesis R3xx AT Command-set functions
are indicated here for convenience.
Important Note: The ETRX358x series and the ETRX358x-LRS series of modules are footprint
compatible, but on the ETRX358x-LRS series pins PB0 and PC5 of the EM358x are used
internally to control the front-end module and are not available to the user. PC5 is still available on
Pad2, but it is configured as TX_ACTIVE signal and cannot be used as a general purpose GPIO.
See also the table “Module pads and functions” in the ETRX357 Development Kit Product Manual.
Refer to the Silicon Labs EM358x manual for details of the alternate functions and pin names.