Telit Wireless Solutions LE50-868 User Manual
  1. Manuals
  2. Brands
  3. Telit Wireless Solutions Manuals
  4. Control Unit
  5. LE50-868
  6. User manual

Telit Wireless Solutions LE50-868 User Manual

Rf module
Hide thumbs Also See for LE50-868:
Table of Contents

Advertisement

Quick Links

Download this manual
LE50-868 RF Module User Guide
1VV0300905 Rev.1 – 2011-05-18

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the LE50-868 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Telit Wireless Solutions LE50-868

Summary of Contents for Telit Wireless Solutions LE50-868

  • Page 1 LE50-868 RF Module User Guide 1VV0300905 Rev.1 – 2011-05-18...
  • Page 2 LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 APPLICABILITY TABLE PRODUCT LE50-868 Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved. Page 2 of 35...
  • Page 3 LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE Notice While reasonable efforts have been made to assure the accuracy of this document, Telit assumes no liability resulting from any inaccuracies or omissions in this document, or from use of the information obtained herein.
  • Page 4 LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 Usage and Disclosure Restrictions License Agreements The software described in this document is the property of Telit and its licensors. It is furnished by express license agreement only and may be used only in accordance with the terms of such an agreement.

  • Page 5: Table Of Contents

    LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 Contents   Introduction ......................7   1.1. Scope ..........................7     1.2.   Audience ........................7   1.3.   Contact Information, Support ..................7   1.4. Document Organization ....................8  ...
  • Page 6   Board Mounting Recommendation ................. 28     6.1.   Electrical environment ....................28   6.2. Power supply decoupling on LE50-868 module ............28     6.3. RF layout considerations ................... 29     6.4.   Antenna connections on printed circuit boards ............29  ...

  • Page 7: Introduction

    -- to use when writing Telit documents. The aim of this document is to present the features and the application of the LE50-868 radio module. After the introduction, the characteristics of the LE50-868 radio module will be described within the following distinct chapters: ...

  • Page 8: Document Organization

    LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 To register for product news and announcements or for product questions contact Telit Technical Support Center (TTSC). Our aim is to make this guide as helpful as possible. Keep us informed of your comments and suggestions for improvements.

  • Page 9: Related Documents

    LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 1.6. Related Documents  [1] EN 300 220-2 v2.3.1, ETSI Standards for SRD , February 2010  [2] ERC Rec 70-03, ERC Recommendation for SRD, June 2010  [3] 2002/95/EC, Directive of the European Parliament and of the Council, 27 January 2003 ...

  • Page 10: Requirements

    Requirements 2.1. General Requirements The LE50-868 module is a multi-band radio board, delivering up to 25 mW in the 868 MHz ISM band (unlicensed frequency band). It is dedicated to low power applications that require mesh network structure. LE50-868 is also pin-to-pin compatible with Telit ZE Family (ZigBee 2007 and PRO stack), ME Family (Wireless M-bus) and LE Family (basic point to point, broadcast stack).
  • Page 11 LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 National Restrictions for non specific SR devices Annex 1 band g1-g4: Country Restriction Reason/Remark Band G Austria Not Implemented Planned Audio, video and voice not allowed - Finland Limited Implementation Planned 2011...

  • Page 12: Functional Requirements

    No info 2.2. Functional Requirements The LE50-868 module is a complete solution from serial interface to RF interface. The LE50- 868 module has a digital part and a RF part. The radio link is a Half Duplex bi-directional link. The digital part has the following functionalities: ...

  • Page 13: Software

    Low noise reception  Power amplification  Packet handling 2.3. Software The LE50-868 module is provided pre-flashed with Telit in-house Star Network stack. Please refer to Star Network Stack User Guide [5] for detail information. 2.4. Temperature Requirements Minimum Typical Maximum...

  • Page 14: General Characteristics

    LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 General Characteristics 3.1. Mechanical Characteristics Rectangular 25.8 x 15 mm Size : 3 mm Height : 1.7 g Weight : 0.8 mm PCB thickness:  Dimensions : 21 x 14.2 x 2.2mm Cover : ...

  • Page 15: Mechanical Dimensions

    LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 3.2. Mechanical dimensions 3.3. Recommended Land pattern Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved. Page 15 of 35...

  • Page 16: Dc Characteristics

    LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 3.4. DC Characteristics Characteristics NE50 Min. Typ. Max. Power Supply +2.0V +3.3V +3.6V (VDD): Consumption 45mA 50mA Transmission @ 25mW: 26mA 30mA Reception : 3µA Stand-by (32.768 khz On) : 0.2x VDD I/O low level : 0.8x VDD...
  • Page 17 LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 Reception (1): Max - 104 dBm Sensitivity (2): Max - 101 dBm for PER < 10 (3): Max - 99 dBm < 1.10 Remaining PER Saturation Up to - 10 dBm for PER <...

  • Page 18: Digital Characteristic

    LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 3.6. Digital Characteristic Function Characteristics  32 kB + 4 kB in system programmable flash  4 kB RAM µC  2 kB E PROM  RS232 TTL Full Duplex ...
  • Page 19 LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 Equipment and Part Number SMD Version LE50-868 DIP Version LE50-868 Demo Kit D LE50 DEMO Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved. Page 19 of 35...

  • Page 20: Technical Description

    LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 Technical Description 4.1. Pin-out of the module TOP VIEW (COVER SIDE) Pin name Pin type Signal level Function RF Ground connection for external antenna Ext_Antenna RF I/O connection to external antenna...
  • Page 21 LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 Ground PROG Signal for serial µC flashing ( Active high with internal pull- down ) Ground PDI_DATA Program and Debug Interface DATA Ground Ground Ground PDI_CLK Program and Debug Interface CLOCK Digital I/O N°9 with interrupt...

  • Page 22: Pin-Out Of The Dip Module

    LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 4.2. Pin-out of the DIP Module Version 1 Version 2 Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved. Page 22 of 35...

  • Page 23: Description Of The Signals

    LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 4.3. Description of the signals Signals Description External hardware reset of the radio module. Reset Active on low state. Serial link signals, format NRZ/TTL: TXD is for outgoing data. RXD is for incoming data.

  • Page 24: Process Information

    5.1. Delivery LE50-868 modules are delivered in plastic tray packaging, each tray including 50 units. The dimensions of the tray are the following: 329 mm x 176 mm x 5.6 mm. Each unit is placed in a 26.6 mm x 16 mm location. An empty tray weights 45 g and a loaded tray weights around 130 g.

  • Page 25: Soldering Pad Pattern

    Soldering pad pattern The surface finished on the printed circuit board pads should be made of Nickel/Gold surface. The recommended soldering pad layout on the host board for the LE50-868 is shown in the diagram below: All dimensions in mm Neither via-holes nor wires are allowed on the PCB upper layer in area occupied by the module.

  • Page 26: Placement

    5.6. Soldering Profile (RoHS Process) It must be noted that LE50-868 module should not be allowed to be hanging upside down during the reflow operation. This means that the module has to be assembled on the side of the printed circuit board that is soldered last.
  • Page 27 LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 The barcode label located on the module shield is able to withstand the reflow temperature. Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved. Page 27 of 35...

  • Page 28: Board Mounting Recommendation

    6.2. Power supply decoupling on LE50-868 module The power supply of LE50-868 module must be nearby decoupled. A LC filter must be placed as close as possible to the radio module power supply pin, VDD . Power Supply...

  • Page 29: Rf Layout Considerations

    LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 6.3. RF layout considerations Basic recommendations must be followed to achieve a good RF layout :  It is recommended to fill all unused PCB area around the module with ground plane ...
  • Page 30 LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 PCB material PCB thickness H (mm) Coplanar line W (mm) Coplanar line G (mm) Table 1 : Values for double face PCB with ground plane around and under coplanar wave guide (recommended)

  • Page 31: Le50-868 Interfacing

    LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 6.5. LE50-868 Interfacing Example of a full RS-232 connection between a PC or an Automat (PLC) and LE50-868 Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved. Page 31 of 35...

  • Page 32: Annexes

    LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 Annexes 7.1. Examples of propagation attenuation 433 MHz 868 MHz 2.4 GHz Factor Attenuation Attenuation Attenuation 0 dB 0 dB 0 dB Open office < 1 dB 1 – 2 dB...

  • Page 33: Safety Recommendations

    LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 Safety Recommendations READ CAREFULLY Be sure the use of this product is allowed in the country and in the environment required. The use of this product may be dangerous and has to be avoided in the following areas: ...

  • Page 34: Glossary

    LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 Glossary Adjacent Channel Power Adaptive Frequency Agility Bits per second Bandwidth Decibel Power level in decibel milliwatt (10 log (P/1mW)) PROM Electrically Erasable Programmable Read Only Memory Effective radiated power e.r.p...

  • Page 35: Document History

    LE50-868 RF Module User Guide 1VV0300905 rev.1 – 2011-05-18 Document History Revision Date Changes 2011-05-18 First issue Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved. Page 35 of 35...

Table of Contents