Telit Wireless Solutions SL869T3-I Product User Manual
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Telit Wireless Solutions SL869T3-I Product User Manual

Telit Wireless Solutions SL869T3-I Product User Manual

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SL869T3-I
Product User Guide
1VV0301546
r0
2018-11-09

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Summary of Contents for Telit Wireless Solutions SL869T3-I

  • Page 1 SL869T3-I Product User Guide 1VV0301546 2018-11-09...

  • Page 2: Notices

    SL869T3-I Product User Guide Notices SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE NOTICES 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 3 SL869T3-I Product User Guide Notices 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 4: Product Applicability Table

    SL869T3-I Product User Guide Product Applicability Table PRODUCT APPLICABILITY TABLE Product SL869T3-I Table 0-1 Product Applicability Table 1VV0301546 r0 Page 4 of 57 2018-11-09...

  • Page 5: Table Of Contents

    SL869T3-I Product User Guide Contents CONTENTS NOTICES ............................2 PRODUCT APPLICABILITY TABLE ....................4 CONTENTS ............................ 5 INTRODUCTION ......................... 10 Purpose ........................... 10 Contact and Support Information ..................10 Related Documents ......................10 Related Documents requiring a Non-Disclosure Agreement ........10 Related Products ......................
  • Page 6 NMEA Standard Messages ..................21 Proprietary Messages ....................22 NMEA Input Commands ....................22 FLASH UPGRADABILITY ....................23 ELECTRICAL INTERFACE ....................24 SL869T3-I Pin-out Diagram ..................... 24 SL869T3-I Pin-out Table ....................25 DC Characteristics......................26 Absolute Maximum Ratings ..................... 26 Power Supply ........................27 VCC ..........................
  • Page 7 Powering an External LNA (active antenna) ..............36 REFERENCE DESIGNS ...................... 37 SL869T3-I Reference Design ..................37 SL869T3-I reference design with Antenna enable & antenna sense ........ 38 MECHANICAL DRAWING ....................39 PCB FOOTPRINT ........................ 40 PRODUCT PACKAGING AND HANDLING ................ 41 Product Marking and Serialization ...................
  • Page 8 SL869T3-I Product User Guide Contents FIGURES Figure 2-1 SL869T3-I Block Diagram .................... 13 Figure 2-2 SL869T3-I Module Photo....................14 Figure 3-1 Evaluation Board (EVB) contents ................. 15 Figure 8-1 SL869T3-I Pin-out Diagram ..................24 Figure 9-1 RF Trace Examples...................... 35 Figure 10-1 SL869T3-I Reference Design ..................
  • Page 9 TABLES Table 0-1 Product Applicability Table ....................4 Table 5-1 SL869T3-I Horizontal Position Accuracy ................ 19 Table 5-2 SL869T3-I Time To First Fix ..................19 Table 5-3 SL869T3-I Sensitivity ..................... 20 Table 6-1 Default NMEA Output Messages ................... 21 Table 6-2 Available Messages....................... 21 Table 6-3 NMEA Talker IDs ......................

  • Page 10: Introduction

    Introduction INTRODUCTION Purpose The purpose of this document is to provide product information for the SL869T3-I module. See Table 0-1 Product Applicability Table. Contact and Support Information For general contact, technical support services, technical questions and report documentation errors contact Telit Technical Support at: •...

  • Page 11: Text Conventions

    SL869T3-I Product User Guide Introduction Text Conventions • Dates are in ISO 8601 format, i.e. YYYY-MM-DD. Symbol Description Danger – This information MUST be followed or catastrophic equipment failure and/or bodily injury may occur. Caution or Warning – This is an important point about integrating the product into a system.

  • Page 12: Product Description

    Product Description PRODUCT DESCRIPTION The SL869T3-I is a 12.2mm x 16.0 mm x 2.55 mm fully integrated GNSS module which receives GPS (L1) and NavIC (L5) signals. It is based on the ST Micro Teseo III GNSS engine with an ARM-9 core processor, flash memory, TCXO, RTC crystal, LNA and SAW filter.

  • Page 13: Block Diagram

    SL869T3-I Product User Guide Product Description Block Diagram Figure 2-1 SL869T3-I Block Diagram 1VV0301546 r0 Page 13 of 57 2018-11-09...

  • Page 14: Module Photo

    SL869T3-I Product User Guide Product Description Module Photo Figure 2-2 SL869T3-I Module Photo 1VV0301546 r0 Page 14 of 57 2018-11-09...

  • Page 15: Evaluation Kit (Evk)

    SL869T3-I Product User Guide Evaluation Kit (EVK) EVALUATION KIT (EVK) The Evaluation Kit (EVK) contains the necessary items to assist the customer in evaluating the module for inclusion in a design. Figure 3-1 Evaluation Board (EVB) contents 1VV0301546 r0 Page 15 of 57...

  • Page 16: Product Features

    SL869T3-I Product User Guide Product Features PRODUCT FEATURES GPS (L1 C/A) and NavIC (L5) Navigation GPS and NavIC (formerly IRNSS) constellations are enabled by default. Satellite Based Augmentation System (SBAS) The receiver is capable of using SBAS (GAGAN) satellites as a source of differential corrections.

  • Page 17: Static Navigation

    SL869T3-I Product User Guide Product Features Server-based AGPS is supported as a standard feature. An Application Note and example source code are available under NDA. Contact TELIT for support regarding this service. Static Navigation Static Navigation is an operating mode in which the receiver will freeze the position fix when the speed falls below a set threshold (indicating that the receiver is stationary).
  • Page 18 SL869T3-I Product User Guide Product Features The I C port is not assigned an I/O function by default. 1VV0301546 r0 Page 18 of 57 2018-11-09...

  • Page 19: Product Performance

    Time to First Fix Time to First Fix Constellations(s) Start Type Typical TTFF (seconds) Warm Cold NavIC Warm Cold Test Conditions: Static scenario, -130 dBm, Full Power mode Table 5-2 SL869T3-I Time To First Fix 1VV0301546 r0 Page 19 of 57 2018-11-09...

  • Page 20: Sensitivity

    Product User Guide Product Performance Sensitivity Minimum Signal Constellation(s) State Level (dBm) Acquisition -145 (target) GPS+NavIC Tracking -161 Acquisition -140 (target) NavIC Tracking -159 Test Conditions: Static Scenario, Full Power mode Table 5-3 SL869T3-I Sensitivity 1VV0301546 r0 Page 20 of 57 2018-11-09...

  • Page 21: Message Interface

    SL869T3-I Product User Guide Message Interface MESSAGE INTERFACE The primary UART port (TX/RX) supports full duplex communication between the receiver and the user. Its default function is NMEA output data and input commands. The default UART configuration is: 9600 bps, 8 data bits, no parity, and 1 stop bit.

  • Page 22: Proprietary Messages

    SL869T3-I Product User Guide Message Interface Talker ID Constellation NavIC (was IRNSS) Solutions using multiple constellations Table 6-3 NMEA Talker IDs Proprietary Messages The receiver can issue several proprietary NMEA output messages ($PSTM) which report additional receiver data and status information.

  • Page 23: Flash Upgradability

    SL869T3-I Product User Guide FLASH UPGRADABILITY FLASH UPGRADABILITY The firmware stored in the internal flash memory of the module may be upgraded via the main serial port (TX/RX). During normal operation, the BOOT pin should be left floating. This will ensure that the module executes code from its internal flash memory.

  • Page 24: Electrical Interface

    SL869T3-I Product User Guide Electrical Interface ELECTRICAL INTERFACE SL869T3-I Pin-out Diagram Figure 8-1 SL869T3-I Pin-out Diagram 1VV0301546 r0 Page 24 of 57 2018-11-09...

  • Page 25: Sl869T3-I Pin-Out Table

    Main 3.3 V Supply Voltage Ground Note: All GND pins must be connected to ground Pins 3, 14, and 20 must be LOW when power is applied (for normal operation) Table 8-1 SL869T3-I Pin-out Table 1VV0301546 r0 Page 25 of 57 2018-11-09...

  • Page 26: Dc Characteristics

    SL869T3-I Product User Guide Electrical Interface DC Characteristics Signal Description Units Low level output voltage, I High level output voltage, I 0.75*V Low level input voltage -0.3 0.45 High level input voltage, I 0.7*V kΩ Internal pull-up resistor equivalent kΩ...

  • Page 27: Power Supply

    SL869T3-I Product User Guide Electrical Interface Power Supply The module has two power supply pins VCC and VBATT. This is the primary 3.3V power supply for the module. The module includes a switching voltage regulator that supplies the required voltage to the GNSS device and other internal items.

  • Page 28: Dc Power Requirements

    SL869T3-I Product User Guide Electrical Interface DC Power Requirements Name Units VBATT Table 8-4 DC Supply Voltage DC Power Consumption State & Constellation Units Acquisition GPS Only GPS + NavIC Navigation/Tracking GPS Only GPS + NavIC Standby (Vbatt) Operating temperature: 25°C.

  • Page 29: Control And Status Signals

    SL869T3-I Product User Guide Electrical Interface Control and Status signals Startup Requirements For normal startup, pins 3, 14, and 20 must be LOW. They have internal pulldowns. nRESET Asserting nRESET (pull low for 5 ms or more, then release) will clear the contents of SRAM and RTC.

  • Page 30: I/O Port Operation

    SL869T3-I Product User Guide Electrical Interface I/O Port Operation UART Port Operation The module provides three full-duplex UART ports which implement a standard asynchronous 8-bit interface with configurable data rates. The signal input and output levels are LVTTL compatible. Care must be used to prevent backdriving the RX line(s) when the module is powered down or in a low-power state.

  • Page 31: Rf Interface

    SL869T3-I Product User Guide Electrical Interface RF interface RF IN The RF input (RF-IN) pin accepts GNSS L1 band signals from the GPS and GAGAN constellations and NavIC L5 band signals. Ω Signal level should be between -125 dBm and -165 dBm into 50 impedance.

  • Page 32: Rf Front End Design

    The NavIC signal is defined by ISRO-IRNSS-ICD-SPS-1.1 dated August 2017. This document describes the NavIC constellation and its signal structure. The SL869T3-I receives and processes the NavIC L5 signal. The receiver will display a reported C/No of 40 dB-Hz for a GPS signal level of -130 dBm at the RF input.

  • Page 33: Gnss Antenna Polarization

    SL869T3-I Product User Guide RF Front End Design For example, in a vehicular application, the GNSS antenna may be placed on the dashboard or rear package tray of an automobile. The metal roof of the vehicle will cause significant blockage, plus any thermal coating applied to the vehicle glass can attenuate the GNSS signal by as much as 15 dB.

  • Page 34: Gnss Antenna Gain

    SL869T3-I Product User Guide RF Front End Design GNSS Antenna Gain Antenna gain is defined as the amplified signal power from the antenna compared to a theoretical isotropic antenna (equally sensitive in all directions). Optimum performance is realized when the firmware build and hardware configuration match the type of antenna used (active or passive).

  • Page 35: Pcb Stack And Trace Impedance

    SL869T3-I Product User Guide RF Front End Design PCB stack and Trace Impedance It is important to maintain a 50 Ω impedance on the RF path trace. Design software for calculating trace impedance can be found from multiple sources on the internet. The best method is to contact your PCB supplier and request a stackup for a 50 Ω...

  • Page 36: Shielding

    SL869T3-I Product User Guide RF Front End Design Shielding Shielding the RF circuitry generally is ineffective because the interference is received by the GNSS antenna itself (which is the most sensitive portion of the RF path). The antenna cannot be shielded because it could not then receive the GNSS signals.

  • Page 37: Reference Designs

    Reference Designs REFERENCE DESIGNS SL869T3-I Reference Design Figure 10-1 SL869T3-I Reference Design Along with power and ground, the minimum signals required to operate the module properly are described below. The power supply must have tight voltage regulation under varying line and load conditions to prevent falsely tripping the internal voltage supervisor within the module.

  • Page 38: Sl869T3-I Reference Design With Antenna Enable & Antenna Sense

    This circuit assumes an antenna supply voltage of 3.3 V and a fixed current draw. Figure 10-2 SL869T3-I Reference Design with Antenna enable & antenna sense The above schematic uses the Antenna Sense circuit to control the supply voltage to the antenna. If its status is NORMAL, the supply is enabled.

  • Page 39: Mechanical Drawing

    SL869T3-I Product User Guide Mechanical Drawing MECHANICAL DRAWING Figure 11-1 SL869T3-I Mechanical Drawing Figure 11-2 3-D Mechanical Drawing 1VV0301546 r0 Page 39 of 57 2018-11-09...

  • Page 40: Pcb Footprint

    SL869T3-I Product User Guide PCB Footprint PCB FOOTPRINT Figure 12-1 SL869T3-I PCB Footprint The module uses advanced packaging with a base metal of copper and an Electroless Nickel Immersion Gold (ENIG) finish. 1VV0301546 r0 Page 40 of 57 2018-11-09...

  • Page 41: Product Packaging And Handling

    SL869T3-I Product User Guide Product Packaging and Handling PRODUCT PACKAGING AND HANDLING Product Marking and Serialization The module label has a 2D Barcode identifying the module and its serial number. Contact a Telit representative for information on specific module serial numbers.

  • Page 42: Product Packaging

    SL869T3-I Product User Guide Product Packaging and Handling Product Packaging Modules are shipped in Tape and Reel form on 24 mm reels with 1000 units per reel or Trays with 72 units. Each reel or tray is ‘dry’ packaged and vacuum sealed in a Moisture Barrier Bag (MBB) with two silica gel packs and a humidity indicator card, which is then placed in a carton.

  • Page 43: Figure 13-4 Tray Packaging

    SL869T3-I Product User Guide Product Packaging and Handling Figure 13-4 Tray Packaging 1VV0301546 r0 Page 43 of 57 2018-11-09...

  • Page 44: Moisture Sensitivity

    SL869T3-I Product User Guide Product Packaging and Handling Moisture Sensitivity Precautionary measures are required in handling, storing and using these devices to avoid damage from moisture absorption. If localized heating is required to rework or repair the device, precautionary methods are required to avoid exposure to solder reflow temperatures that can result in performance degradation.

  • Page 45: Figure 13-5 Moisture-Sensitive Device Label

    SL869T3-I Product User Guide Product Packaging and Handling Figure 13-5 Moisture-Sensitive Device Label 1VV0301546 r0 Page 45 of 57 2018-11-09...

  • Page 46: Esd Sensitivity

    SL869T3-I Product User Guide Product Packaging and Handling ESD Sensitivity The module contains class 1 devices and is classified as Electro-Static Discharge Sensitive (ESDS). Telit recommends the two basic principles of protecting ESD devices from damage: • Handle sensitive components only in an ESD Protected Area (EPA) under protected and controlled conditions;...

  • Page 47: Safety

    SL869T3-I Product User Guide Product Packaging and Handling Safety Improper handling and use of this module can cause permanent damage to it. There is also the possible risk of personal injury from mechanical trauma or choking hazard. See Section 17 Safety Recommendations for safety information.

  • Page 48: Environmental Requirements

    SL869T3-I Product User Guide Environmental Requirements ENVIRONMENTAL REQUIREMENTS Operating Environmental Limits Operating Limits Temperature -40°C to +85°C Temperature ±1°C / minute maximum Rate of Change Up to 95% non-condensing or a wet bulb temperature of +35°C, Humidity whichever is less...

  • Page 49: Compliances

    SL869T3-I Product User Guide Compliances COMPLIANCES ISO 9000 Accredited Manufactured in an ISO 9000: 2008 accredited facility RoHS Compliance Manufactured in compliance with Directive 2011/65/EU art. 16 on the restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS)

  • Page 50: Glossary And Acronyms

    SL869T3-I Product User Guide Glossary and Acronyms GLOSSARY AND ACRONYMS Assisted (or Aided) GPS AGPS provides ephemeris data to the receiver to allow faster cold start times than would be possible using only broadcast data. AGPS This extended ephemeris data could be either server-generated or locally- generated.
  • Page 51 SL869T3-I Product User Guide Glossary and Acronyms Geometric Dilution of Precision A factor used to describe the effect of satellite geometry on the accuracy GDOP of the time and position solution of a GNSS receiver. A lower value of GDOP indicates a smaller error in the solution. Related factors include PDOP, HDOP, VDOP and TDOP.
  • Page 52 SL869T3-I Product User Guide Glossary and Acronyms Multifunctional Transport Satellites MTSAT The Japanese system of geosynchronous satellites used for weather and aviation control. Navigation with Indian Constellation. NavIC The Indian regional system. Formerly called IRNSS. The lowest signal level at which a GNSS receiver is able to reliably Navigation Sensitivity maintain navigation after the satellite signals have been acquired.
  • Page 53 SL869T3-I Product User Guide Glossary and Acronyms Satellite Based Augmentation System A system that uses a network of ground stations and geostationary satellites to provide differential corrections to GNSS receivers. These SBAS corrections are transmitted on the same frequency as navigation signals, so the receiver can use the same front-end design to process them.

  • Page 54: Safety Recommendations

    SL869T3-I Product User Guide Safety Recommendations SAFETY RECOMMENDATIONS READ CAREFULLY Be sure that the use of this product is allowed in the country and in the environment required. The use of this product may be dangerous and must be avoided in the following areas: Where it can interfere with other electronic devices in environments such as hospitals, •...

  • Page 55: Electrical And Fire Safety

    SL869T3-I Product User Guide Safety Recommendations Electrical and Fire Safety This device is intended for built-in designs and must be installed by users that have taken adequate precautions and have sufficient knowledge to avoid electrical, mechanical and fire hazards. The module shall be mounted on a PCB which complies with V-0 flammability class.

  • Page 56: Document History

    SL869T3-I Product User Guide Document History DOCUMENT HISTORY Revision Date Changes Draft Removed references to GLONASS 2018-08-21 Added preliminary performance data Added section: Antenna Selection Draft 2018-10-19 Updated for NavIC-specific features Added reference diagrams 2018-10-23 Updated performance numbers with AIS-140 specifications...

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