Telit Wireless Solutions SL869T3-I Product User Manual

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Telit Wireless Solutions SL869T3-I Product User Manual | Manualzz

SL869T3-I

Product User Guide

1VV0301546 r0

2019-01-10

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. The information in this document has been carefully checked and is believed to be reliable. However, no responsibility is assumed for inaccuracies or omissions. Telit reserves the right to make changes to any products described herein and reserves the right to revise this document and to make changes from time to time in content hereof with no obligation to notify any person of revisions or changes. Telit does not assume any liability arising out of the application or use of any product, software, or circuit described herein; neither does it convey license under its patent rights or the rights of others.

It is possible that this publication may contain references to, or information about Telit products

(machines and programs), programming, or services that are not announced in your country. Such references or information must not be construed to mean that Telit intends to announce such Telit products, programming, or services in your country.

COPYRIGHTS

This manual and the Telit products described herein may be, include or describe copyrighted Telit material, such as computer programs stored in semiconductor memories or other media. Laws in

Italy and other countries preserve for Telit and its licensors certain exclusive rights for copyrighted material, including the exclusive right to copy, reproduce in any form, distribute and make deriv ative works of the copyrighted material. Accordingly, any copyrighted material of Telit and its licensors contained herein or in the Telit products described in this manual may not be copied, reproduced, distributed, merged or modified in any manner without the express written permission of Telit.

Furthermore, the purchase of Telit products shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent applications of Telit, as arises by operation of law in the sale of a product.

COMPUTER SOFTWARE COPYRIGHTS

The Telit and 3rd Party supplied Software (SW) products described in this manual may include copyrighted Telit and other 3rd Party supplied computer programs stored in semiconductor memories or other media. Laws in Italy and other countries preserve for Telit and other 3rd Party supplied SW certain exclusive rights for copyrighted computer programs, including the exclusive right to copy or reproduce in any form the copyrighted computer program. Accordingly, any copyrighted Telit or other

3rd Party supplied SW computer programs contained in the Telit products described in this manual may not be copied (reverse engineered) or reproduced in any manner without the express written permission of Telit or the 3rd Party SW supplier. Furthermore, the purchase of Telit products shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent applications of Telit or other 3rd Party supplied SW, except for the normal non-exclusive, royalty free license to use that arises by operation of law in the sale of a product.

1VV0301546 r0 Page 2 of 57 2019-01-10

SL869T3-I Product User Guide Notices

USAGE AND DISCLOSURE RESTRICTIONS

I. 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.

II. Copyrighted Materials

Software and documentation are copyrighted materials. Making unauthorized copies is prohibited by law. No part of the software or documentation may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, without prior written permission of Telit

III. High Risk Materials

Components, units, or third-party products used in the product described herein are NOT faulttolerant and are NOT designed, manufactured, or intended for use as on-line control equipment in the following hazardous environments requiring fail-safe controls: the operation of Nuclear Facilities,

Aircraft Navigation or Aircraft Communication Systems, Air Traffic Control, Life Support, or Weapons

Systems (High Risk Activities"). Telit and its supplier(s) specifically disclaim any expressed or implied warranty of fitness for such High Risk Activities.

IV. Trademarks

TELIT and the Stylized T Logo are registered in Trademark Office. All other product or service names are the property of their respective owners.

V. Third Party Rights

The software may include Third Party Right software. In this case you agree to comply with all terms and conditions imposed on you in respect of such separate software. In addition to Third Party

Terms, the disclaimer of warranty and limitation of liability provisions in this License shall apply to the Third Party Right software.

TELIT HEREBY DISCLAIMS ANY AND ALL WARRANTIES EXPRESS OR IMPLIED FROM ANY

THIRD PARTIES REGARDING ANY SEPARATE FILES, ANY THIRD PARTY MATERIALS

INCLUDED IN THE SOFTWARE, ANY THIRD PARTY MATERIALS FROM WHICH THE

SOFTWARE IS DERIVED (COLLECTIVELY “OTHER CODE”), AND THE USE OF ANY OR ALL

THE OTHER CODE IN CONNECTION WITH THE SOFTWARE, INCLUDING (WITHOUT

LIMITATION) ANY WARRANTIES OF SATISFACTORY QUALITY OR FITNESS FOR A

PARTICULAR PURPOSE.

NO THIRD PARTY LICENSORS OF OTHER CODE SHALL HAVE ANY LIABILITY FOR ANY

DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

(INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND WHETHER

MADE UNDER CONTRACT, TORT OR OTHER LEGAL THEORY, ARISING IN ANY WAY OUT OF

THE USE OR DISTRIBUTION OF THE OTHER CODE OR THE EXERCISE OF ANY RIGHTS

GRANTED UNDER EITHER OR BOTH THIS LICENSE AND THE LEGAL TERMS APPLICABLE

TO ANY SEPARATE FILES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

1VV0301546 r0 Page 3 of 57 2019-01-10

SL869T3-I Product User Guide

PRODUCT APPLICABILITY TABLE

Product

SL869T3-I

Table 0-1 Product Applicability Table

Product Applicability Table

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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 ........................................................................................ 10

Text Conventions ........................................................................................ 11

PRODUCT DESCRIPTION ................................................................................ 12

Product Overview ........................................................................................ 12

Block Diagram ............................................................................................ 13

Module Photo ............................................................................................. 14

EVALUATION KIT (EVK).................................................................................. 15

PRODUCT FEATURES .................................................................................... 16

GPS (L1 C/A) and NavIC (L5) Navigation .......................................................... 16

Satellite Based Augmentation System (SBAS) .................................................... 16

SBAS Corrections .................................................................................... 16

Assisted GPS (AGPS) .................................................................................. 16

Locally-generated AGPS (ST-AGPS) ............................................................ 16

Serv er-generated AGPS (PGPS) ................................................................. 16

Static Navigation ......................................................................................... 17

Elev ation Mask Angle ................................................................................... 17

Internal LNA .............................................................................................. 17

1PPS ....................................................................................................... 17

Antenna Enable .......................................................................................... 17

Antenna Sense ........................................................................................... 17

Serial I/O Ports ........................................................................................... 17

UART ................................................................................................... 17

I

2

C ....................................................................................................... 18

PRODUCT PERFORMANCE ............................................................................. 19

Horizontal Position Accuracy .......................................................................... 19

Time to First Fix .......................................................................................... 19

Sensitivity.................................................................................................. 20

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SL869T3-I Product User Guide Contents

MESSAGE INTERFACE ................................................................................... 21

NMEA Output Messages ............................................................................... 21

NMEA Standard Messages ........................................................................ 21

Proprietary Messages ............................................................................... 22

NMEA Input Commands................................................................................ 22

FLASH UPGRAD ABILITY ................................................................................ 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 ..................................................................................................... 27

VBATT .................................................................................................. 27

DC Power Requirements ........................................................................... 28

DC Power Consumption ............................................................................ 28

Control and Status signals ............................................................................. 29

Startup Requirements ............................................................................... 29 nRESET ................................................................................................ 29

Boot Select ............................................................................................ 29

1PPS .................................................................................................... 29

Antenna Power and Status ............................................................................ 29

External Active Antenna Voltage .................................................................. 29

Antenna Enable....................................................................................... 29

Antenna Sense ....................................................................................... 29

I/O Port Operation ....................................................................................... 30

I

UART Port Operation ................................................................................ 30

2

C Port Operation .................................................................................... 30

RF interface ............................................................................................... 31

RF IN ................................................................................................... 31

Burnout Protection ................................................................................... 31

Frequency Plan ....................................................................................... 31

Antenna Selection ....................................................................................... 31

RF FRONT END DESIGN ................................................................................. 32

RF Signal Requirements ............................................................................... 32

GNSS Antenna Polarization ........................................................................... 33

Active versus Passive Antenna ....................................................................... 33

GNSS Antenna Gain .................................................................................... 34

System Noise Floor ..................................................................................... 34

PCB stack and Trace Impedance .................................................................... 35

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SL869T3-I Product User Guide Contents

RF Trace Losses ......................................................................................... 35

RF Interference........................................................................................... 35

Shielding ................................................................................................... 36

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 .................................................................... 41

Product Packaging ...................................................................................... 42

Moisture Sensitivity ...................................................................................... 44

ESD Sensitivity ........................................................................................... 46

Reflow ...................................................................................................... 46

Assembly Considerations .............................................................................. 46

Washing Considerations ............................................................................... 46

Safety ...................................................................................................... 47

Disposal ................................................................................................... 47

ENVIRONMENTAL REQUIREMENTS ................................................................. 48

Operating Environmental Limits ...................................................................... 48

Storage Environmental Limits ......................................................................... 48

COMPLIANCES ............................................................................................. 49

ISO 9000 Accredited .................................................................................... 49

RoHS Compliance ....................................................................................... 49

GLOSSARY AND ACRONYMS .......................................................................... 50

SAFETY RECOMMENDATIONS ........................................................................ 54

READ CAREFULLY ..................................................................................... 54

Electrical and Fire Safety ............................................................................... 55

DOCUMENT HISTORY .................................................................................... 56

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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 ..................................................................... 37

Figure 10-2 SL869T3-I Reference Design with Antenna enable & antenna sense .................... 38

Figure 11-1 SL869T3-I Mechanical Drawing .................................................................. 39

Figure 11-2 3-D Mechanical Drawing .......................................................................... 39

Figure 12-1 SL869T3-I PCB Footprint .......................................................................... 40

Figure 13-1 Product Label......................................................................................... 41

Figure 13-2 Tape and Reel Packaging ......................................................................... 42

Figure 13-3 Tape and Reel – Tape detail ...................................................................... 42

Figure 13-4 Tray Packaging ...................................................................................... 43

Figure 13-5 Moisture-Sensitive Device Label ................................................................. 45

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SL869T3-I Product User Guide Contents

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 ....................................................................................... 22

Table 8-1 SL869T3-I Pin-out Table.............................................................................. 25

Table 8-2 DC Characteristics ..................................................................................... 26

Table 8-3 Absolute Maximum Ratings .......................................................................... 26

Table 8-4 DC Supply Voltage..................................................................................... 28

Table 8-5 Power Consumption ................................................................................... 28

Table 8-6 Frequency Plan ......................................................................................... 31

Table 9-1 Inductor Loss ............................................................................................ 36

Table 13-1 Product Label Description .......................................................................... 41

Table 14-1 Operating Environmental Limits ................................................................... 48

Table 14-2 Storage Environmental Limits ...................................................................... 48

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SL869T3-I Product User Guide 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:

[email protected]

[email protected]

[email protected]

Alternatively, use: http://www.telit.com/support

For detailed information about where you can buy the Telit modules or for recommendations on accessories and components visit: http://www.telit.com

For GNSS product information visit: http://www.telit.com/gnss

Our aim is to make this guide as helpful as possible. Keep us informed of your comments and suggestions for improv ements.

Telit appreciates feedback from the users of our information.

Related Documents

SL869T3-I Data Sheet

SL869 T3-I Evaluation Kit User Guide

V33 Software User Guide

Related Documents requiring a Non-Disclosure Agreement

ST Antenna Sense App Note

V33 Software Authorized User Guide

Related Products

• SL869-V3: The SL869-V3 module is similar to the SL869T3-I but supports the four

Global systems (GNSS) instead of NavIC.

SL869-ADR: The SL869-ADR module is similar to the SL869-V3 (GNSS) module but includes embedded MEMS hardware and DR firmware

See http://www.telit.com/gnss/

1VV0301546 r0 Page 10 of 57 2019-01-10

SL869T3-I

Text Conventions

Product User Guide

• Dates are in ISO 8601 format, i.e. YYYY-MM-DD.

Symbol Description

Introduction

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. If this information is disregarded, the product or system may malfunction or fail.

Tip – This is advice or suggestion that may be useful when integrating the product.

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SL869T3-I Product User Guide 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.

Special Features

• NavIC (formerly IRNSS) (L5) constellation in addition to GPS (L1)

• AIS-140 compliant

• Antenna on (output signal)

• Antenna sense (input signal)

Product Overview

• Complete GPS and NavIC receiver module including memory, TCXO, RTC, LNA, SAW

Filters, and DC blocking capacitor

• Based on the ST Micro Teseo III engine

• Constellations supported: GPS (L1 C/A), NavIC (L5)

• SBAS (GAGAN) capable

• Assisted GPS (AGPS) support for extended ephemeris o Local: ST-AGPS o Serv er: PGPS

• NMEA-0183 command input and data output

• 3 UART ports (see I/O Ports)

1 I

2

C port (see I/O Ports)

• 1PPS output

• Supports active or passive antenna

• Antenna on (output) signal

• Antenna sense (input) signal

• Memory - o 256 Kbyte embedded SRAM o 16 Megabit built-in SQI flash

• Low power consumption

• 48 tracking channels + 2 fast acquisition channels

• Supported by evaluation kits

• -40°C to +85°C industrial temperature range

• Surface mountable by standard SMT equipment

• 24-pad 16.0 x 12.2 x 2.4 mm Industry Standard LCC castellated edge package

• AIS-140 compliant

• RoHS compliant

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SL869T3-I

Block Diagram

Product User Guide Product Description

Figure 2-1 SL869T3-I Block Diagram

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SL869T3-I

Module Photo

Product User Guide Product Description

Figure 2-2 SL869T3-I Module Photo

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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

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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.

These systems use geostationary satellites to transmit regional corrections via a GNSS-compatible signal.

SBAS Corrections

The SBAS satellites transmit a set of differential corrections to their respective regions. The use of

SBAS corrections can improve positioning accuracy.

Assisted GPS (AGPS)

A GNSS receiver requires ephemeris data to calculate the precise position in space of each satellite to be used in the navigation solution. Since the satellites move at a speed of 3874 km/s along their orbits and are subject to gravitational perturbations from all masses in the solar system, this data must be both current and accurate. Each GPS satellite transmits a complete set of its ephemeris coefficients (called the broadcast ephemeris or BE) every 30 seconds. This is therefore the minimum time required for a cold start Time to First Fix (TTFF). The BE data is usually refreshed every 2 hours.

The minimum cold start TTFF can be reduced from 30 seconds to just a few seconds by implementing AGPS, which can provide Extended Ephemeris (EE) data by two methods -

1. Locally-generated: The receiver includes software to project the future positions of the satellites. This data may be calculated out to 14 days or even longer, depending on the resources available in the receiver, e.g. computation ability and memory.

2. Server-generated: A server calculates the future position projections and makes them av ailable to a receiver, typically over the internet. This data may be good for 30 days, depending on available resources, e.g. communication links and storage.

This Extended Ephemeris (EE) data is then stored for use at the next restart, and can reduce cold start times to a few seconds.

If server-generated EE data is received and processed, locally-generated data is not used.

AGPS is enabled by default, but can be disabled by command.

Locally-generated AGPS (ST-AGPS)

Proprietary algorithms within the module perform GPS ephemeris prediction locally from stored broadcast ephemeris data (received from tracked satellites). The algorithms predict orbital parameters for up to 5 days. The module must operate in Full Power mode for at least 5 minutes to collect ephemeris data from visible satellites, or 12 hours for the full constellation.

Server-generated AGPS (PGPS)

Telit AGPS servers maintain calculated extended ephemeris data. The predicted ephemeris file is obtained from the AGPS server and is transmitted to the module over serial port 1 (RX). These predictions do not require collection of broadcast ephemeris, and are valid for up to 14 days.

1VV0301546 r0 Page 16 of 57 2019-01-10

SL869T3-I Product User Guide Product Features

Serv er-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).

The course and altitude are also frozen, and the speed is reported as “0”.

The navigation solution is updated every 40 seconds while the receiver is in the Static Navigation mode.

The navigation solution is unfrozen when the speed increases abov e a threshold or when the computed position exceeds a set distance from the frozen position (indicating that the receiver is again in motion).

This feature is useful for applications in which very low dynamics are not expected, the classic example being an automotive application.

Static Navigation is disabled by default but can be enabled by command.

Elevation Mask Angle

The default elevation mask angle is 5°. It can be changed by command.

Internal LNA

The module includes a built-in LNA to improve sensitivity.

1PPS

The module provides a 1PPS output signal whenever the receiver has a valid fix (2D or 3D).

Antenna Enable

The Antenna Enable output can be used to control an external power supply to an active antenna

(or external LNA). It will be high when the receiver is operating, or low when it is in a low-power

(standby) mode.

Antenna Sense

The Antenna Sense feature measures the current consumed by the external LNA or active antenna and reports its status as NORMAL, SHORT, or OPEN in an NMEA proprietary message.

Serial I/O Ports

The module includes three serial ports and an I

2

C port.

UART

The UART ports can be used for sending data and receiving commands.

See section

8.8.1 UART Port Operation

.

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SL869T3-I Product User Guide

I

2

C

The I

2

C port is not assigned an I/O function by default.

Product Features

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SL869T3-I Product User Guide

PRODUCT PERFORMANCE

Horizontal Position Accuracy

Constellation

GPS

NavIC

Horizontal Position Accuracy

Typical CEP (m)

1.3

3.2 (simulator)

Test Conditions: Open Sky, Full Power mode

Table 5-1 SL869T3-I Horizontal Position Accuracy

Time to First Fix

Time to First Fix

Constellations(s) Start Type

Hot

Typical TTFF (seconds)

1

GPS Warm

Cold

Hot

NavIC Warm 42

Cold

50

Test Conditions: Static scenario, -130 dBm, Full Power mode

26

34

2

Table 5-2 SL869T3-I Time To First Fix

Product Performance

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SL869T3-I Product User Guide

Sensitivity

Constellation(s) State

Minimum Signal

Level (dBm)

GPS+NavIC

NavIC

Acquisition

Tracking

Acquisition

Tracking

Test Conditions: Static Scenario, Full Power mode

Table 5-3 SL869T3-I Sensitivity

-145 (target)

-161

-140 (target)

-159

Product Performance

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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.

The V33 Software Authorized User Guide, which contains additional proprietary information, is av ailable to customers under a Non-Disclosure Agreement (NDA) with Telit.

NMEA Output Messages

The communication protocol is NMEA-0183 V3.01.

NMEA Standard Messages

Message ID Description

RMC GNSS Recommended Minimum navigation data

GGA

GSA

GNSS Position fix data

GNSS Dilution of Precision (DOP) and active satellites

GSV GNSS Satellites in view.

Note: Multiple GSA and GSV messages may be output per cycle.

Table 6-1 Default NMEA Output Messages

The following messages can be enabled by command:

Message ID Description

GNS GNSS Fix data

GST GNSS Pseudorange Error Statistics

GLL Geographic Position – Latitude & Longitude

VTG

ZDA

Course Over Ground & Ground Speed

Time, Date, & Local Time Zone

Table 6-2 Available Messages

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SL869T3-I Product User Guide Message Interface

Talker ID

GP

IR

GN

Constellation

GPS

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.

NMEA Input Commands

The receiver uses NMEA proprietary messages for commands and command responses. This interface provides configuration and control over selected firmware features and operational properties of the module.

The format of a command is:

$<command-ID>[,<parameters>]*<cr><lf>

Commands are NMEA proprietary format and begin with “$PSTM”.

Parameters, if present, are comma-delimited as specified in the NMEA protocol.

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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.

In order to update the FW, the following steps should be performed.

1. Remove all power to the module.

2. Connect a serial port cable to a PC.

3. Pull the BOOT SELECT pin high (to VCC through a 1K

Ω resistor

).

4. Apply main power.

5. Clearing the entire flash memory prior to re-programming is strongly recommended.

6. Run the software utility to re-flash the module.

7. Remove main power to the module for a minimum of 10 seconds.

8. Remove the pullup resistor to the BOOT SELECT pin.

9. Apply main power to the module.

10. Verify that the module has returned to normal operation.

Alternate re-programming method:

1. Apply main power to the module.

2. Connect a serial port cable to a PC.

3. Pull the BOOT SELECT pin high (to VCC through a 1K

Ω resistor

).

4. Assert nRESET (pull low), then release (floating). nRESET should not be held low.

5. Clearing the entire flash memory prior to re-programming is strongly recommended.

6. Run the software utility to re-flash the module.

7. Return the BOOT SELECT pin to normal (floating).

8. Verify that the module has returned to normal operation.

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SL869T3-I Product User Guide

ELECTRICAL INTERFACE

SL869T3-I Pin-out Diagram

Electrical Interface

Figure 8-1 SL869T3-I Pin-out Diagram

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SL869T3-I Product User Guide Electrical Interface

SL869T3-I Pin-out Table

Pad Name

1 Reserved

2 Reserved

Type Description

Res Reserved – Do not connect

Res Reserved – Do not connect

3 1PPS O Time Mark Pulse

4 ANT_ENABLE O Antenna Enable

5 UART1_RX I UART1 Receive

6 UART1_TX O UART1 Transmit

7 Reserved

8 nRESET

Res Reserved – Do not connect

I Reset (active low)

9 VCC

10 GND

11 RF_IN

12 GND

13 GND

GND Ground

I GNSS RF Input, 50 Ohm

GND Ground

GND Ground

O

I

UART2 Transmit

BOOT (at power up)

I UART2 Receive 15 UART2_RX

16 ANT2

17 ANT1

18 I

2

C_SDA

19 I

2

C_SCL

20 TX

21 RX

22 VBATT

23 VCC

I Antenna sense 2

I Antenna sense 1

I/O I

2

C Data

I/O I

2

C Clock

O

I

Primary UART Transmit

Primary UART Receive

PWR Battery Backup Supply

PWR Main 3.3 V Supply Voltage

24 GND GND 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

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SL869T3-I Product User Guide

R

PD

L

I

L

O

C

I

V

OH

V

IL

V

IH

R

PU

Signal Description

V

OL

DC Characteristics

Low level output voltage, I

OL

2mA

High level output voltage, I

OH

2mA

Low level input voltage

High level input voltage, I

IH

2mA

Internal pull-up resistor equiv alent

Internal pull-down resistor equivalent

Input leakage at V

I

= 1.8 V or 0 V -10

Tristate output leakage at V

O

= 1.8 V or 0 V -10

Input capacitance, digital output -

Min

-

0.75*V

DD

-0.3

0.7*V

DD

Table 8-2 DC Characteristics

Absolute Maximum Ratings

Parameter Pins Max Rating

1.5

10

RF Input Voltage

RF Input Power

ESD Voltage CDM

JESD22-C101E

ESD Voltage HDM

JEDEC JS-001-2012

All RF inputs

All RF inputs

All Pins

All Pins

3.3 V Supply Voltage VCC

I/O Pin Voltage All digital inputs

Table 8-3 Absolute Maximum Ratings

+/- 1100

+/-500

3.6

3.60

Electrical Interface

47

-

-

8

Ty p Max Units

- 0.4 V

-

47

-

-

-

0.45

3.6

V

V

V kΩ

10

10

- kΩ

µA

µA pF

Units

V dBm

V

V

V

V

1VV0301546 r0 Page 26 of 57 2019-01-10

SL869T3-I Product User Guide Electrical Interface

Power Supply

The module has two power supply pins VCC and VBATT.

VCC

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. These power supply components (including capacitors) are internal to the module.

The external DC voltage supply (including regulators, capacitors, etc.) must be designed to ensure that stable power is maintained within the specifications listed below.

The supply voltage must be within specification within 10 milliseconds of initial application.

The power-up sequence must not be interrupted during the first second or the module may fail to start up. If the module does not initialize correctly due to improper application of VCC_IN, the module can be reset by:

• removing power from both Vcc and Vbatt and then reapplying it in the proper manner or

• asserting the nRESET pin (low).

See section

8.5.3 DC Power Requirements

for power specifications.

Pin 9 is connected to pin 23 by an internal trace, and may (optionally) be connected to the external supply for pin 23.

VBATT

The Battery Backup supply voltage is used to power the RTC and BBRAM domains. It maintains critical data to enable HOT and WARM starts.

Internal diode OR’ing provides an internal source for VBATT ev en if this pin is not used.

An internal reset of the module is generated upon removal and reapplication of VBATT (not VCC_IN).

If the module does not initialize correctly due to improper application of VCC_IN, the module can be reset by:

• removing power from both Vcc and Vbatt and then reapplying it in the proper manner

• or

• asserting the nRESET pin (low).

See section

8.5.3 DC Power Requirements

for power specifications.

1VV0301546 r0 Page 27 of 57 2019-01-10

SL869T3-I Product User Guide

DC Power Requirements

Name Min Typ Max Units

VCC 3.0 3.3 3.6 V

VBATT 2.5 3.3

Table 8-4 DC Supply Voltage

DC Power Consumption

State & Constellation

Acquisition

3.6

GPS Only

NavIC only

GPS + NavIC

Navigation/Tracking

GPS Only

NavIC only

GPS + NavIC

Standby (Vbatt)

Operating temperature: 25°C.

Supply voltage: 3.3 VDC nominal

Table 8-5 Power Consumption

216

269

Typ

232

269

269

260

25

V

Max

320

286

291

232

286

291

- -

Units

mW mW mW mW mW mW uW

Electrical Interface

1VV0301546 r0 Page 28 of 57 2019-01-10

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.

The module will begin operation with a cold start after nRESET is released.

Since the BOOT SELECT pin is read when nRESET is released, it must be set to the desired input level (LOW for normal operation) before nRESET is released.

Holding nRESET low will not place the module in a low-power state.

Boot Select

Low for normal operation. This pin has an internal pulldown.

Pull high to load FW into flash memory.

1PPS

1PPS is a one pulse per second signal which is enabled after the receiver has achieved a 2D or 3D position fix. It is disabled if the position fix is lost.

The pulse is approximately 50% duty cycle.

This pin must be LOW at startup for normal operation

Antenna Power and Status

External Active Antenna Voltage

If an active antenna or external LNA is used, an external source is required to provide voltage to it.

This may be the same source that is used to supply the module or it may be a separate source.

A DC blocking capacitor is not required since it is built-in to the module.

Antenna Enable

The Antenna Enable output can be used to control an external power supply to an active antenna

(or external LNA, etc.). It will be high when the receiver is operating, or low when it is in a low-power

(standby) mode.

Antenna Sense

The Antenna Sense feature will measure the current consumed by the external LNA or active antenna using two comparators with hysteresis. With 3.3 V supplied, a 1 Ω sense resistor yields input voltages to indicate the state of the antenna. The FW reads these lines and provides an output message for antenna NORMAL, OPEN, or SHORTED.

This message can be configured to be output periodically or whenever the status changes.

The

Antenna Sense application note

is available under a Non-Disclosure Agreement.

1VV0301546 r0 Page 29 of 57 2019-01-10

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. If the RX signal is used, it is important that it be either high impedance or logic low whenever VCC has been removed from the device. Failure to follow this requirement can lead to improper receiver operation upon the next power-up.

8.8.1.1. UART0 (TX/RX): Pins 20 & 21.

The UART can operate at rates from 4800 bps to 1.2288 Mbps.

This is the primary communications port which outputs data and accepts commands in NMEA format.

TX must be LOW at startup for normal operation.

8.8.1.2. UART1 (UART1_TX & RX): Pins 6 & 5.

This port is not used by the default configuration of the firmware.

8.8.1.3. UART2 (UART2_TX &/RX): Pins 14 & 15.

Note that pin 14 is also used to select BOOT. It must be LOW at startup for normal operation.

I

2

C Port Operation

The I

2

C port on pins 18 and 19 is not used by the default configuration of the firmware.

Pull-ups are not included inside the module.

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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.

Signal level should be between -125 dBm and -165 dBm into 50

Ω

impedance.

DC voltage to the RF input is blocked by an internal capacitor.

The RF-IN pin is ESD sensitive.

The module contains an integrated LNA and SAW filters. This allows the module to work well with a passive or active GNSS antenna. If the antenna cannot be located near the module, then an active antenna (that is, an antenna with a built in low noise amplifier) should be used.

Antenna Gain:

• Passive antenna: isotropic gain of greater than -6 dBi.

• Active antenna: optimum gain is 15 dB to 20 dB (including cable losses).

• A noise figure of less than 1.0 dB will offer the best performance.

The maximum total external gain is 24 dB (including all external gain - i.e. antenna gain, external

LNA gain, and any passive losses due to cables, connectors, filters, matching networks, etc.).

Burnout Protection

The receiver accepts without risk of damage a signal of +10 dBm from 0 to 2 GHz carrier frequency, except in band 1560 to 1610 MHz where the maximum level is -10 dBm.

Frequency Plan

Signal Frequency (MHz)

TCXO Frequency 26.000

Table 8-6 Frequency Plan

Antenna Selection

The antenna must be deigned to provide GNSS signals in both bands:

• GPS (L1) at 1575.42 MHz

• NavIC (L5) at 1176.45 MHz

The signal levels are specified in section

9 RF Front End Design.

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SL869T3-I Product User Guide RF Front End Design

RF FRONT END DESIGN

RF Signal Requirements

The receiver can achiev e Cold Start acquisition with a signal level abov e the specified minimum at its input. This means that it can acquire and track visible satellites, download the necessary ephemeris data and compute the location within a 5-minute period. In the GNSS signal acquisition process, demodulating the navigation message data is the most difficult task, which is why Cold Start acquisition requires a higher signal level than nav igation or tracking. For the purposes of this discussion, autonomous operation is assumed, which makes the Cold Start acquisition level the dominant design constraint. If assistance data in the form of time or ephemeris aiding is available, lower signal levels can be used for acquisition.

The GPS signal is defined by IS-GPS-200. This document states that the signal level received by a linearly polarized antenna having 3 dBi gain will be a minimum of -130 dBm when the antenna is in the worst-case orientation and the satellite is 5 degrees or more abov e the horizon.

In actual practice, the GPS satellites transmit slightly more power than specified, and the signal level typically increases if a satellite has higher elevation angles.

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. This assumes a SEN (system equivalent noise) of the receiver of 4 dB. System Equivalent

Noise includes the Noise Figure of the receiver plus signal processing or digital noise. For an equivalent NavIC signal level the firmware will report a C/No of approximately 39 dB-Hz. This is due to the receiver’s higher losses (NF) and a higher signal processing noise for these signals.

Each GNSS satellite presents its own signal to the receiver, and best performance is obtained when the signal levels are between -130 dBm and -125 dBm. These received signal levels are determined by:

• GNSS satellite transmit power

• GNSS satellite elevation angle

• Free space path loss

• Extraneous path loss (such as rain)

• Partial or total path blockage (such as foliage or buildings)

• Multipath interference (caused by signal reflection)

• GNSS antenna characteristics

• Signal path after the GNSS antenna

The satellite transmit power is specified in each constellation’s reference documentation, readily av ailable online.

The GNSS signal is relatively immune to attenuation from rainfall.

Howev er, the GNSS signal is heavily influenced by attenuation due to foliage (such as tree canopies, etc.) as well as outright blockage caused by buildings, terrain or other items near the line of sight to the specific GNSS satellite. This variable attenuation is highly dependent upon satellite location. If enough satellites are blocked, say at a lower elevation, or all in one general direction, the geometry of the remaining satellites will result is a lower position accuracy. The receiver reports this geometry effect in the form of PDOP, HDOP and VDOP numbers.

1VV0301546 r0 Page 32 of 57 2019-01-10

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.

Again, both of these factors will affect the performance of the receiver.

Multipath interference is a phenomenon where the signal from a particular satellite is reflected and is received by the GNSS antenna in addition to or in place of the line of sight signal. The reflected signal has a path length that is longer than the line of sight path and can either attenuate the original signal, or, if received in place of the original signal, can add error in determining a solution because the distance to the particular satellite is actually shorter than measured. It is this phenomenon that makes GNSS navigation in urban canyons (narrow roads surrounded by high rise buildings) so challenging. In general, the reflection of a GNSS signal causes the polarization to reverse. The implications of this are covered in the next section.

GNSS Antenna Polarization

The GNSS broadcast signals are Right Hand Circularly Polarized (RHCP).

An RHCP antenna will have 3 dB gain compared to a linearly polarized antenna (assuming the same antenna gain specified in dBic and dBi respectively).

An RHCP antenna is better at rejecting multipath interference than a linearly polarized antenna because the reflected signal changes polarization to LHCP. This signal would be rejected by the

RHCP antenna, typically by 20 dB or greater.

In a multipath situation, the direct (line of sight) signal would show a higher signal level with an RHCP antenna than a linearly polarized antenna because the interfering signal is rejected.

Howev er, in the case where the line of sight signal is obstructed, such as in an urban canyon environment, then the number of satellites in view could drop below the minimum needed to determine a 3D position. This is a case where a bad signal may be better than no signal. The system designer needs to understand trade-offs in their application to determine the better choice.

Active versus Passive Antenna

If the GNSS antenna is placed near the receiver (within 1 or 2 meters) and the RF trace losses are not excessive (nominally 1 dB), then a passive antenna may be used. This would often be the lowest cost option and most of the time the simplest to use. Howev er, if the antenna needs to be located farther away from the receiver, then an active antenna may be required to obtain the best system performance. An active antenna includes a built- in low noise amplifier (LNA) to overcome RF trace and cable losses. Many active antennas also have a pre-select filter, a post-select filter, or both.

Important specifications for an active antenna LNA are gain and noise figure.

1VV0301546 r0 Page 33 of 57 2019-01-10

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). Most receivers automatically adjust the internal LNA gain to accommodate the incoming signal level.

For example, a 25 mm by 25 mm square patch antenna on a reference ground plane (usually 70 mm by 70 mm) may give an antenna gain at zenith of 5 dBic. A smaller 18 mm by 18 mm square patch on a reference ground plane (usually 50 mm by 50 mm) may give an antenna gain at zenith of 2 dBic.

An antenna vendor should specify a nominal antenna gain (usually at zenith, or directly overhead) and antenna pattern curves specifying gain as a function of elevation, and gain at a fixed elevation as a function of azimuth. Pay careful attention to the requirement to meet the required design, such as ground plane size and any external matching components. Failure to follow these requirements could result in very poor antenna performance.

It is important to note that GNSS antenna gain is not the same as external LNA gain. Most antenna vendors will specify these numbers separately, but some combine them into a single number. Both numbers are significant when designing the front end of a GNSS receiver.

For example, antenna X has an antenna gain of 5 dBic at azimuth and an LNA gain of

20 dB for a combined total of 25 dB. Antenna Y has an antenna gain of -5 dBic at azimuth and an

LNA gain of 30 dB for a combined total of 25 dB. Howev er, in the system, antenna X will outperform antenna Y by about 10 dB (Refer to the next section for more details on external LNA gain).

An antenna with higher gain will generally outperform an antenna with lower gain. However, once the signals are above about -130 dBm for a particular satellite, no improvement in performance would be realized. Howev er, for those satellites with a signal level below about -135 dBm, a higher gain antenna would amplify the signal and improve the performance of the GNSS receiver. In the case of very weak signals, a good antenna could mean the difference between being able to use a particular satellite signal or not.

System Noise Floor

The receiver will display a reported C/No of 40 dB-Hz for an input signal level of -130 dBm. The C/No number means the carrier (or signal) is 40 dB greater than the noise floor measured in a one Hz bandwidth. This is a standard method of measuring GNSS receiver performance.

The simplified formula is:

C/No = GNSS Signal level – Thermal Noise – System NF

Equation 9-1

Thermal noise is -174 dBm/Hz at 290K.

We can estimate a system noise figure of 4 dB for the module, consisting of the pre-select SAW filter loss, the LNA noise figure, and implementation losses within the digital signal processing unit. The

DSP noise is typically 1.0 to 1.5 dB.

Howev er, if a good quality external LNA is used, the noise figure of that LNA (typically better than

1dB) could reduce the overall system noise figure from 4 dB to approximately 2 dB.

1VV0301546 r0 Page 34 of 57 2019-01-10

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 controlled impedance board. They will give you a suggested trace width along with PCB stackup needed to create the 50 Ω impedance.

It is also important to consider the effects of component pads that are in the path of the

50

Ω

trace. If the traces are shorter than a 1/16th wavelength, transmission line effects will be minimized, but stray capacitance from large component pads can induce additional RF losses. It may be necessary to ask the PCB vendor to generate a new PCB stackup and suggested trace width that is closer to the component pads, or modify the component pads themselves.

RF Trace Losses

RF Trace losses on a PCB are difficult to estimate without having appropriate tables or RF simulation software. A good rule of thumb would be to keep the RF traces as short as possible, make sure they are 50 Ω impedance, and don’t contain any sharp bends.

Figure 9-1 RF Trace Examples

RF Interference

RF interference into the GNSS receiver tends to be the biggest problem when determining why the system performance is not meeting expectations. As mentioned earlier, the GNSS signals are at a level of -130 dBm and lower. If signals higher than this are presented to the receiver, the RF front end can be overdriven.

The most common source of interference is digital noise, often created by the fast rise and fall times and high clock speeds of modern digital circuitry. For example, a popular netbook computer uses an

Atom processor clocked at 1.6 GHz. This is only 25 MHz away from the GNSS signal, and depending upon temperature of the SAW filter, can be within its passband. Because of the nature of the address and data lines, this would be broadband digital noise at a relatively high level.

Such devices are required to adhere to a regulatory standard for emissions such as FCC Part 15

Subpart J Class B or CISPR 22. However, these regulatory emission levels are far higher than the

GNSS signal.

1VV0301546 r0 Page 35 of 57 2019-01-10

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.

There are two solutions, one is to move the antenna away from the source of interference, and the other is to shield the digital interference source to prev ent it from getting to the antenna.

Powering an External LNA (active antenna)

An external LNA requires a source of power. Many active antennas accept a 3 V or 5 V DC voltage that is impressed upon the RF signal line.

Two approaches can be used:

1.

Use an inductor to tie directly to the RF trace. This inductor should be at self-resonant at L1

(1.57542 GHz) and should have good Q for low loss. The higher the inductor Q, the lower the loss will be. The side of the inductor connecting to the antenna supply voltage should be bypassed to ground with a good quality RF capacitor, again with self-resonance at the

L1 frequency.

2.

Use a quarter wave stub in place of the inductor. The length of the stub is designed to be exactly ¼ wavelength at L1, which has the effect of making an RF short at one end of the stub to appear as an RF open at the other end. The RF short is created by a high quality

RF capacitor operating at self-resonance.

The choice between the two would be determined by:

• RF path loss introduced either by the inductor or by the quarter wave stub.

• Cost of the inductor.

• Space availability for the quarter wave stub.

Simulations done by Telit show the following:

Inductor

Murata LQG15HS27NJ02

Quarter wave stub on FR4

Coilcraft B09TJLC (used in ref. design)

Additional signal loss (dB)

0.65

0.59

0.37

Table 9-1 Inductor Loss

Since this additional loss occurs after the LNA, it is generally not significant unless the circuit is being designed to work with both active and passive antennas.

1VV0301546 r0 Page 36 of 57 2019-01-10

SL869T3-I Product User Guide

REFERENCE DESIGNS

SL869T3-I Reference Design

Reference Designs

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 prev ent falsely tripping the internal voltage supervisor within the module.

The RF input is connected to a GNSS antenna that receives both L1 and L5 bands. The reference design shows a DC power feed for an active antenna. The inductor L1 is chosen to be self-resonant at the GPS frequency, 1.57542 GHz, to minimize loading on the RF trace. Capacitor C5 is also chosen to be self-resonant at the GPS frequency such that it is close to an RF short at that frequency.

V_ANT is the supply voltage for the external active antenna.

TX and RX are typical UART digital I/O lines.

As is the case with all RX lines, the idle state is logic one.

Be careful to tri-state this line if the module is turned off to avoid back-driving.

1VV0301546 r0 Page 37 of 57 2019-01-10

SL869T3-I Product User Guide Reference Designs

SL869T3-I reference design with Antenna enable & antenna sense

The Antenna Sense pins provide the capability for the module to check the antenna current draw and report its status as NORMAL, SHORT, or OPEN. This status is reported at startup and whenever the status changes.

The two comparators (which read the Ant1 and ANT2 pins) are designed with hysteresis so the rising and falling thresholds are not identical.

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. If the status is SHORT or OPEN, antenna voltage supply is disabled

1VV0301546 r0 Page 38 of 57 2019-01-10

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 2019-01-10

SL869T3-I

PCB FOOTPRINT

Product User Guide 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 2019-01-10

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.

Figure 13-1 Product Label

Key Description

1

2

Telit logo

Product Name

4 Telit Serial Number

5

Telit Serial Number barcode (type 2D datamatrix)

11 digit (base 36 – 0 to 9 followed by A to Z)

6 CE mark

Note: Other fields are unused

Table 13-1 Product Label Description

1VV0301546 r0 Page 41 of 57 2019-01-10

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.

All packaging is ESD protective lined.

Figure 13-2 Tape and Reel Packaging

Figure 13-3 Tape and Reel – Tape detail

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SL869T3-I Product User Guide Product Packaging and Handling

Figure 13-4 Tray Packaging

1VV0301546 r0 Page 43 of 57 2019-01-10

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.

The Telit module has a moisture sensitivity level rating of 3 as defined

by IPC/JEDEC J-STD-020

.

This rating is assigned due to some of the components used within the module.

The TELIT packaging is hermetically sealed with desiccant and humidity indicator card. The TELIT parts must be placed and reflowed within 168 hours of first opening the hermetic seal provided the factory conditions are less than 30°C and less than 60% and the humidity indicator card indicates less than 10% relative humidity.

If the package has been opened or the humidity indicator card indicates above 10%, then the parts must be baked prior to reflow. The parts may be baked at +125°C ± 5°C for 48 hours. Howev er, the tape and reel cannot withstand that temperature. Lower temperature baking is feasible if the humidity level is low and time is available. Please see

IPC/JEDEC J-STD-033

for additional information.

Additional information can be found on the MSL tag affixed to the outside of the hermetically sealed bag.

JEDEC standards are available free of charge from the JEDEC website http://www.jedec.org

.

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SL869T3-I Product User Guide Product Packaging and Handling

Figure 13-5 Moisture-Sensitive Device Label

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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;

• Protect sensitive devices outside the EPA using ESD protective packaging.

All personnel handling ESDS devices have the responsibility to be aware of the ESD threat to the reliability of electronic products.

Further information can be obtained from the JEDEC standard JESD625-A Requirements for

Handling Electrostatic Discharge Sensitive (ESDS) Devices.

Reflow

The modules are compatible with lead free soldering processes as defined in

IPC/JEDEC J-STD-

020

. The reflow profile must not exceed the profile given

IPC/JEDEC J-STD-020

Table 5-2,

“Classification Reflow Profiles”. Although

IPC/JEDEC J-STD-020

allows for three reflows, the assembly process for the module uses one of those profiles, therefore the module is limited to two reflows.

When re-flowing a dual-sided SMT board, it is important to reflow the side containing the module last. This prevents heavier components within the module from becoming dislodged if the solder reaches liquidus temperature while the module is inv erted.

Note

: JEDEC standards are available free from the JEDEC website http://www.jedec.org .

Assembly Considerations

During board assembly and singulation process steps, pay careful attention to unwanted vibrations, resonances and mechanical shocks introduced by the board router.

.

Washing Considerations

The module can be washed using standard PCB cleaning procedures after assembly. The shield does not provide a water seal to the internal components of the module, so it is important that the module be thoroughly dried prior to use by blowing excess water and then baking the module to drive residual moisture out. Depending upon the board cleaning equipment, the drying cycle may not be sufficient to thoroughly dry the module, so additional steps may need to be taken. Exact process details will need to be determined by the type of washing equipment as well as other components on the board to which the module is attached. The module itself can withstand standard JEDEC baking procedures

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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.

Disposal

We recommend that this product should not be treated as household waste. For more detailed information about recycling this product, please contact your local waste management authority or the reseller from whom you purchased the product.

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SL869T3-I Product User Guide

ENVIRONMENTAL REQUIREMENTS

Operating Environmental Limits

Operating Limits

Temperature -20°C to +85°C

Environmental Requirements

Temperature

Rate of Change

±1°C / minute maximum

Humidity

Up to 95% non-condensing or a wet bulb temperature of +35°C, whichever is less

Maximum Vehicle Dynamics 2G acceleration

Table 14-1 Operating Environmental Limits

Storage Environmental Limits

Storage Limits

Temperature -40°C to +85°C

Humidity

Up to 95% non-condensing or a wet bulb temperature of +35°C, whichever is less

Shock

(in shipping container)

10 drops from 75 cm onto concrete floor

Table 14-2 Storage Environmental Limits

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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)

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SL869T3-I Product User Guide Glossary and Acronyms

GLOSSARY AND ACRONYMS

AGPS

Almanac

BeiDou (BDS)

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.

This extended ephemeris data could be either server-generated or locallygenerated.

See Local Ephemeris prediction data and Serv er-based Ephemeris prediction data

A reduced-precision set of orbital parameters for the entire GPS constellation that allows calculation of approximate satellite positions and velocities. The almanac may be used by a receiver to determine satellite visibility as an aid during acquisition of satellite signals. The almanac is updated weekly by the Master Control Station. See Ephemeris.

The Chinese GNSS, currently being expanded towards full operational capability. Formerly called COMPASS.

Cold Start

A cold start occurs when a receiver begins operation with unknown position, time, and ephemeris data, typically when it is powered up after a period on inactivity. Almanac information may be used to identify previously visible satellites and their approximate positions. See Restart.

Cold Start Acquisition

Sensitivity

The lowest signal level at which a GNSS receiver is able to reliably acquire satellite signals and calculate a navigation solution from a Cold Start. Cold start acquisition sensitivity is limited by the data decoding threshold of the satellite messages.

EGNOS

Ephemeris

(plural ephemerides)

ESD:

GAGAN

Galileo

European Geostationary Navigation Overlay Service

The European SBAS system.

A set of precise orbital parameters that is used by a GNSS receiver to calculate satellite position and velocity. The satellite position is then used to calculate the navigation solution. Ephemeris data is updated frequently

(normally every 2 hours for GPS) to maintain the accuracy of the position calculation. See Almanac.

Electro-Static Discharge

Large, momentary, unwanted electrical currents that can cause damage to electronic equipment.

The Indian SBAS system.

The European GNSS currently being built by the European Union (EU) and European Space Agency (ESA).

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SL869T3-I

GDOP

GLONASS

GNSS

GPS

Hot Start

LCC

LNA

Local Ephemeris prediction data

MSAS

MSD

Product User Guide Glossary and Acronyms

Geometric Dilution of Precision

A factor used to describe the effect of satellite geometry on the accuracy 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.

ГЛОбальная НАвигационная Спутниковая Система

GLObal'naya NAvigatsionnay a Sputnikovaya Sistema

(Global Navigation Satellite System)

The Russian GNSS, which is operated by the Russian Aerospace Defense

Forces

Global Navigation Satellite System

Generic term for a satellite-based navigation system with global coverage.

The current systems are: GPS (US), GLONASS (Russia), BeiDou (China), and Galileo (Europe). Contrast with RNSS.

Global Positioning System

The U.S. GNSS, a satellite-based positioning system that provides accurate position, velocity, and time data. GPS is operated by the US

Department of Defense.

A hot start occurs when a receiver begins operation with known time, position, and ephemeris data, typically after being sent a restart command.

See Restart.

Leadless Chip Carrier

A module design without pins. In place of the pins are pads of bare goldplated copper that are soldered to the printed circuit board.

Low Noise Amplifier

An electronic amplifier used for very weak signals which is especially designed to add very little noise to the amplified signal.

Extended Ephemeris (i.e. predicted) data, calculated by the receiver from broadcast data received from satellites, which is stored in memory. It is usually useful for up to three days. See AGPS. Contrast with Server-based prediction data.

MTSAT Satellite Augmentation System

The Japanese SBAS system.

Moisture sensitive device.

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SL869T3-I

MTSAT

NavIC

Product User Guide Glossary and Acronyms

Multifunctional Transport Satellites

The Japanese system of geosynchronous satellites used for weather and av iation control.

Navigation with Indian Constellation.

The Indian regional system. Formerly called IRNSS.

NMEA

QZSS

Reacquisition

Restart

Reset

RNSS

RoHS

RTC

SAW

1VV0301546 r0

National Marine Electronics Association

Quasi-Zenith Satellite System

The Japanese SBAS system (part of MSAS).

A receiver, while in normal operation, loses RF signal (perhaps due to the antenna cable being disconnected or a vehicle entering a tunnel), and reestablishes a valid fix after the signal is restored. Contrast with Reset and

Restart.

A receiver beginning operation after being sent a restart command, generally used for testing rather than normal operation. A restart can also result from a power-up. See Cold Start, Warm Start, and Hot Start.

Contrast with Reset and Reacquisition.

A receiver beginning operation after a (hardware) reset signal on an input pin, generally used for testing rather than normal operation. Contrast with

Restart and Reacquisition.

Regional Navigation Satellite System.

Current examples are QXSS (Japan) and NavIC (India).

Contrast with GNSS.

The Restriction of Hazardous Substances

Directive on the restriction of the use of certain hazardous substances in electrical and electronic equipment, was adopted in February 2003 by the

European Union.

Real Time Clock

An electronic device (chip) that maintains time continuously while powered up.

Surface Acoustic Wave filter

Electromechanical device used in radio frequency applications. SAW filters are useful at frequencies up to 3 GHz.

Page 52 of 57 2019-01-10

SL869T3-I Product User Guide Glossary and Acronyms

SBAS

Satellite Based Augmentation System

A system that uses a network of ground stations and geostationary satellites to provide differential corrections to GNSS receivers. These corrections are transmitted on the same frequency as navigation signals, so the receiver can use the same front-end design to process them.

Current examples are WAAS, EGNOS, MSAS, and GAGAN.

Serv er-based

Ephemeris prediction data

Extended Ephemeris (i.e. predicted) data, calculated by a server and provided to the receiver over a network. It is usually useful for up to 14 days. See AGPS. Contrast with Local ephemeris prediction data.

TCXO

Tracking Sensitivity

TTFF

UART

WAAS

Warm Start

Temperature-Compensated Crystal Oscillator

The lowest signal level at which a GNSS receiver is able to maintain tracking of a satellite signal after acquisition is complete.

Time to First Fix

The elapsed time required by a receiver to achieve a valid position solution from a specified starting condition. This value will vary with the operating state of the receiver, the length of time since the last position fix, the location of the last fix, and the specific receiver design.

A standard reference level of -130 dBm is used for testing.

Universal Asynchronous Receiver/Transmitter

An integrated circuit (or part thereof) which provides a serial communication port for a computer or peripheral dev ice.

Wide Area Augmentation System

The North American SBAS system developed by the US FAA (Federal

Aviation Administration).

A warm start occurs when a receiver begins operation with known (at least approximately) time and position, but unknown ephemeris data, typically after being sent a restart command. See Restart.

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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, airports, aircraft, etc.

• Where there is risk of explosion such as gasoline stations, oil refineries, etc. It is the responsibility of the user to enforce the country regulations and specific environmental regulations.

Do not disassemble the product. Evidence of tampering will invalidate the warranty.

Telit recommends following the instructions in product user guides for correct installation of the product. The product must be supplied with a stabilized voltage source and all wiring must conform to security and fire prevention regulations. The product must be handled with care, avoiding any contact with the pins because electrostatic discharges may damage the product itself.

The system integrator is responsible for the functioning of the final product; therefore, care must be taken with components external to the module, as well as for any project or installation issue. Should there be any doubt, please refer to the technical documentation and the regulations in force. Nonantenna modules must be equipped with a proper antenna with specific characteristics.

The European Community provides directives for electronic equipment introduced in the market.

Relevant information is available on the European Community website: http://ec.europa.eu/enterprise/sectors/rtte/documents/

The text of the Directive 99/05 regarding telecommunication equipment is available, while the applicable Directives (Low Voltage and EMC) are av ailable at: http://ec.europa.eu/enterprise/sectors/electrical/

The power supply used shall comply the clause 2.5 (Limited power sources) of the standard

EN 60950-1 and shall be mounted on a PCB which complies with V-0 flammability class.

Since the module must be built-in to a system, it is intended only for installation in a RESTRICTED

ACCESS LOCATION. Therefore, the system integrator must provide an enclosure which protects against fire, electrical shock, and mechanical shock in accordance with relev ant standards. http://ec.europa.eu/enterprise/sectors/electrical/

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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.

The device must be supplied with a limited power source that meets clause 2.5 of the EN 60950-1 standard. These requirements are:

• For power supplies without overcurrent protection device:

Short circuit current < 8 A. Apparent power < 100 VA

• For power supplies with overcurrent protection device (rated current of overcurrent device shall be < 5 A):

Short circuit current < 333 A. Apparent power < 250 VA.

• Furthermore, the device must be installed within an enclosure that meets HB class or pass the 550º glowing fire test of EN 60695-2-11 and mounted on a V1 flammability class material or better.

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0

0

0

0

SL869T3-I Product User Guide

DOCUMENT HISTORY

Revision

0

0

Date Changes

2018-08-21

2018-10-19

Draft

Removed references to GLONASS

Added preliminary performance data

Added section: Antenna Selection

Draft

Updated for NavIC-specific features

Added reference diagrams

0

Document History

2018-10-23 Updated performance numbers with AIS-140 specifications

0

0

2018-10-23b Updated preliminary power consumption values

2018-11-01 Updated preliminary performance and power values

2018-11-21 Deleted “pre-select” from SAW filter description

2019-01-02 Changed lower temperature limit from -40 C to -20 C

1VV0301546 r0 Page 56 of 57 2019-01-10

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