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AUREL XTR-8LR10 User Manual

Half duplex transceiver
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XTR-8LR10
is an half duplex transceiver for long range radio communication based on a patented
, providing
modulation technique
+14dBm power.
Compared to standard modulation techniques
long distances by using low power in transmission and low consumption, inexpensive power supply circuits and low
cost batteries.
Transceiver works in
869,70÷870,00MHz (25mW, ver. 8LR10)
XTR-8LR10
is a radio-modem with UART input interface
handle addressing schemes for point-to-multipoint star networks. Main radio parameters might be set up smoothly via
command mode procedure
in the field.
Operating voltage is 3,3V, current consumption is 17 mA in reception and 30 mA in transmission (14 dBm ERP).
Module is available in SMD version, for surface and vertical assembling, 18 pin whose size is
Tape & reel package for automatic assembling for
Main features
Direct transmission or radiomodem mode
RS-232 interface with store and foreward mode
No encoding or preamble requested
AT command mode for set up of parameters
HyperTerminal* compatible
Channels: 3 max
Small form factor (33.5x15.4x2.4 mm)
UART data rate: 9600, 19200, 115200 bps
Emitted power: max 20 mW
Sensitivity from -118 to-144 dBm
Operating voltage: 3,3V
Standard distance: 8000 m
Le caratteristiche tecniche possono subire variazioni senza preavviso. AUR°EL S.p.A. non si assume la responsabilità di danni causati dall'uso improprio del dispositivo.
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AUR° EL S.p.A. Via Foro dei Tigli, 4 - 47015 Modigliana (FC) – ITALY
Tel.: +39.0546.941124 Fax: +39.0546.941660
http://www.aurelwireless.com
high interference immunity
, XTR-8LR10
868÷868,6MHz (25mW ver. 8LR10), 869,4÷869,65MHz (25mW, ver. 8LR10),
European band with possibility to set the channel width.
, offering the user flexibility and multiple solutions to the many problems involved
- email:
rfcomm@aurel.it
,
high sensitivity and very low power consumption with
improves up to 20 dB the receiver sensitivity
,
working on data packages (max. size 255 bytes). It can
pick and place
.
Applications
XTR-8LR10
33.5 X 15.4 X 2.4 mm.
Agriculture Systems
Irrigation control
Photovoltaic monitor
Industrial sensors
SCADA
Tele-Alarms
Instruments Monitoring
AMR
Rev 1.0 09/07/2015
User manual
"LoRa SSM"
,
allowing
Pag 1 di 21

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Summary of Contents for AUREL XTR-8LR10

  • Page 1 +14dBm power. , XTR-8LR10 Compared to standard modulation techniques improves up to 20 dB the receiver sensitivity allowing long distances by using low power in transmission and low consumption, inexpensive power supply circuits and low cost batteries.

  • Page 2: Absolute Maximum Ratings

    XTR-8LR10 --------------------------------------------------------------------------------------------------------------------------------------------------- User manual Absolute maximum ratings -20 °C ÷ +70 °C Operating temperature -40 °C ÷ +100 °C Storage temperature Supply voltage +3,6V -1.0 ÷ Vcc + 0.3V Input voltage -1.0 ÷ Vcc + 0.3V Output voltage Technical Characteristics Min.

  • Page 3: Pin Out Description

    XTR-8LR10 --------------------------------------------------------------------------------------------------------------------------------------------------- User manual PWRDN → RX_NORMAL RX_NORMAL → PWRDN TX_NORMAL → RX_NORMAL See : EQ1, EQ2 , EQ3, Fig4 RX NORMAL → TX_NORMAL See : EQ1, EQ2 , EQ3, Fig4 Default value Channel (CN2) 869,5 Emitted power (tx) UART data rate...

  • Page 4: Lora Modulation

    XTR-8LR10 --------------------------------------------------------------------------------------------------------------------------------------------------- User manual N° Pin Name Description 50 ohm impedance for antenna ANTENNA Ground connection or negative supply voltage pin. Not present Ground connection or negative supply voltage pin. Regulated supply voltage 3,3V-100mA Connect a capacitor 10-100uF very close to the pin and GND.
  • Page 5 XTR-8LR10 --------------------------------------------------------------------------------------------------------------------------------------------------- User manual Bandwidth 125KHz Spreading Factor Sensibilità (dBm) Tempo di volo (ms) -118 -123 -126 -129 -132 -134 -137 Bandwidth 250KHz Spreading Factor Sensibilità (dBm) Tempo di volo (ms) -115 -120 -123 -126 -129 -131 -134 As you can see sensitivity increases as far as SF value increases and data rate decreases as far as SF increases and Bandwidth decreases.
  • Page 6 It is downloadable an Excel sheet that automatically calculates the radio flight time according to the parameters chosen. Data packet frame: XTR-8LR10 is a radiomodem working in packet mode and handling addresses for point-to-multipoint networks. Packet has a 255 bytes max length, where 247 bytes are the payload and 8 the addresses.

  • Page 7: Operation Modes

    XTR-8LR10 --------------------------------------------------------------------------------------------------------------------------------------------------- User manual Picture 2: Data radio packet frame in NORMAL mode In NORMAL mode no network (register S10=0), NETWORK ID, SOURCE ID and DESTINATION ADDRESS are not in radio protocol and are available 255 bytes of payload. radio...
  • Page 8 XTR-8LR10 --------------------------------------------------------------------------------------------------------------------------------------------------- User manual To enter command mode, possible only from sleep mode, send to RX_UART a sequence of 4 ‘+’ ASCII characters in a row (++++). In order to execute it, it's recommended to use the RS232 or USB port of PC (pay attention to convert phisical levels to 0-3V), connect TX and RX while RTS and CTs are not handled in command mode.
  • Page 9 XTR-8LR10 --------------------------------------------------------------------------------------------------------------------------------------------------- User manual CHANNEL Operating radio channel Bw 125 KHz Bw 250 KHz 0= 868,30MHz 0= 868,30MHz (nota 2) 1= 869,525MHz 2= 869,85MHz 2= 869,85MHz POWER RF power level in output from the Min = 0 dBm device (select at steps of 1 dB)
  • Page 10 XTR-8LR10 --------------------------------------------------------------------------------------------------------------------------------------------------- User manual (note 1) NI means not implemented yet. Command execution doesn't have any effect. (note 2) To apply with limits imposed by EN300 220 normative, for the others (BW 125 KHz and 250 KHz) setting of channel is useless and module will work only on default channel.
  • Page 11 XTR-8LR10 --------------------------------------------------------------------------------------------------------------------------------------------------- User manual All values stored in the registers will be lost when the module is turned off, unless the changes are saved in microcontroller EEPROM memory by means of the specific command ATWR: in this case the saved values will be active even if the module is turned off and then on.
  • Page 12 13 (TX UART) of unit B, is strictly depending on Bytes number of the packet and of the serial speeds used into reception and transmission. CTS at high logic level inhibits the module XTR-8LR10 to the transmission of the data on pin 13 (TX_UART).
  • Page 13 SOURCE ADDRESS identifier of the device from which the message leaves and DESTINATION ADDRESS the device destination of the message. From this condition, XTR-8LR10 module in reception filters the radio packets and forwards to UART only those ones with the same network address (NETWORK ID) and the same destination address...
  • Page 14 XTR-8LR10 --------------------------------------------------------------------------------------------------------------------------------------------------- User manual The module 1 has been set up into NORMAL mode with addressing, network address (NETWORK ID = A) and source address (SOURCE ADDRESS = 1). The command ATWR memorizes the new settings up on eeprom and the device returns into SLEEP mode.
  • Page 15 XTR-8LR10 --------------------------------------------------------------------------------------------------------------------------------------------------- User manual Application Scheme: The connection of the mode for the working in NORMAL is extremely simple. The transmission signals, reception and radio module settings up, are obtained through communication asynchronous serial interface input output. The module always works in reception mode, the commutation from reception to transmission starts up automatically when the first data packet has entered into port 12 (RX_UART).
  • Page 16 Power Supply: 1. XTR-8LR10 must be supplied from very low voltage safety source protected against the short circuits. Maximum voltage variations allowed: 2.4 ÷ 3.6 V. However it is preferable to maintain a stable voltage to a predetermined value in the range of voltage as specified above, using a voltage regulator "Fast...
  • Page 17 XTR-8LR10 --------------------------------------------------------------------------------------------------------------------------------------------------- User manual Antenna: Connect pin 1 (antenna) to the coaxial connector or antenna, with 50 ohm constant impedance microstrip, width 3.2 mm for PCB with thickness 1.6 mm and 1.6 mm for PCB with thickness 1mm (see Figure 8).
  • Page 18 XTR-8LR10 --------------------------------------------------------------------------------------------------------------------------------------------------- User manual Soldering Layout and SMD assembling Picture 9: Soldering layout suggested for host board. In order to ensure the right assembly of the module, it is necessary to apply a production process by observing carefully the following instructions: •...
  • Page 19 * Tolerance for peak profile temperature (T ) is defined as a supplier minimum and a user maximum. Table 3: Detailed time / temperatures profile for soldering XTR-8LR10 Picture 10: Soldering profile for XTR-8LR10 Le caratteristiche tecniche possono subire variazioni senza preavviso. AUR°EL S.p.A. non si assume la responsabilità di danni causati dall’uso improprio del dispositivo.
  • Page 20 Specifications Packaging Tape and Reel: XTR-8LR10 is packed in Tape and Reel composed by an embossed carrier tape and antistatic cover tape. In this way the modules are ESD protected and can be handled by machines for the automatic assembly of SMD components.
  • Page 21 User manual Reference Rules XTR-8LR10 transceiver is compliant with the European set of rules EN 300 220 V2.4.1 (2012-05), and EN 301 489-3 V1.5.1 (2012-07). Tests has been performed through transmissions of Pseudo Code Random at 500bps. The occupancy of bandwidth has been performed through transmissions of Pseudo Code Random at 500bps.