Quectel L76 Manuel utilisateur

L76 Series

EVB User Guide

GNSS Module Series

Version: 2.1

Date: 2021-08-05

Status: Released

GNSS Module Series

L76_Series_EVB_User_Guide 1 / 31

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contact our company headquarters:

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General Notes

Quectel offers the information as a service to its customers. The information provided is based upon

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Safety Information

The following safety precautions must be observed during all phases of operation, such as usage, service

or repair of any terminal incorporating Quectel L76-LB module. Manufacturers of the terminal should send

the following safety information to users and operating personnel, and incorporate these guidelines into all

manuals supplied with the product. Otherwise, Quectel assumes no liability for customers’ failure to comply

with these precautions.

Ensure that the product may be used in the country and the required environment,

as well as that it conforms to the local safety and environmental regulations.

Keep away from explosive and flammable materials. The use of electronic products

in extreme power supply conditions and locations with potentially explosive

atmospheres may cause fire and explosion accidents.

The product must be powered by a stable voltage source, while the wiring must

conform to security precautions and fire prevention regulations.

Proper ESD handling procedures must be followed throughout the mounting,

handling and operation of any devices and equipment that incorporate the module

to avoid ESD damages.

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About the Document

Revision History

Document Information

Title

L76 Series EVB User Guide

Subtitle

GNSS Module Series

Document Type

EVB User Guide

Document Status

Released

Version

Date

Description

1.0

2013-02-25

Initial

1.1

2013-03-26

Optimized the contents of Chapter 3.

2.0

2016-05-03

1. Changed the document name from Quectel_L76_EVB_User_Guide to

Quectel_L76_Series_EVB_User_Guide.

2. Incorporated the related information of L76-L.

2.1

2021-08-05

1. Added the applicable module L76-LB.

2. Updated the overall structure of the document, including but not limited

to the adding of Chapters 4, 5 and 6.

 
 GNSS Module Series 
L76_Series_EVB_User_Guide  5 / 31 
 
 
 
Contents 
Safety Information...................................................................................................................................... 3 
About the Document.................................................................................................................................. 4 
Contents...................................................................................................................................................... 5 
Table Index.................................................................................................................................................. 6 
Figure Index................................................................................................................................................ 7 
1Introduction......................................................................................................................................... 8 
2General Overview................................................................................................................................ 9 
2.1. EVB Kit Accessories .................................................................................................................. 9
2.2. Connecting Cables and Antenna to EVB................................................................................. 10 
3Board User Interfaces....................................................................................................................... 11 
3.1. EVB Top View............................................................................................................................11 
3.2. Board User Interfaces ...............................................................................................................11 
4Using QCOM Tool to Communicate................................................................................................ 14 
4.1. Communication via the Micro-USB Interface........................................................................... 14 
5Using QGNSS Tool to Test............................................................................................................... 16 
5.1. COM Port and Baud Rate Setting............................................................................................ 16 
5.1.1. Interface Explanation .................................................................................................... 17 
5.2. TTFF Testing ............................................................................................................................ 19 
5.3. AGNSS Setting ........................................................................................................................ 21 
5.3.1. Assistant GNSS Online................................................................................................. 21 
5.3.2. Assistant GNSS Offline................................................................................................. 23 
6Using QGPSFlashTool to Upgrade Firmware................................................................................ 27 
7Appendix References....................................................................................................................... 30 
 

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Table Index

Table 1: List of Accessories........................................................................................................................ 10

Table 2: Detailed EVB Interfaces ............................................................................................................... 12

Table 3: J106 Pin Detailed Description ......................................................................................................13

Table 4: Explanation of QGNSS Interface .................................................................................................17

Table 5: Related Documents...................................................................................................................... 30

Table 6: Terms and Abbreviations ..............................................................................................................30

 
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Figure Index 
Figure 1: EVB Kit Accessories ..................................................................................................................... 9
Figure 2: EVB and Accessories Assembly.................................................................................................10 
Figure 3: EVB Top View ..............................................................................................................................11 
Figure 4: USB Port .....................................................................................................................................14 
Figure 5: COM Port Setting Interface of QCOM ........................................................................................14 
Figure 6: NMEA Sentences Output by Module – Displayed on QCOM Tool Interface.............................. 15 
Figure 7: QGNSS Setting...........................................................................................................................16 
Figure 8: QGNSS Interface (Connected)................................................................................................... 17 
Figure 9: Static TTFF Testing via QGNSS .................................................................................................19 
Figure 10: TTFF Test Settings.................................................................................................................... 19 
Figure 11: AGNSS Setting.......................................................................................................................... 20 
Figure 12: Run or Stop Test .......................................................................................................................20 
Figure 13: Test Results...............................................................................................................................21 
Figure 14: AGNSS Setting via QGNSS – Assistant GNSS Online ............................................................21 
Figure 15: Assistant GNSS Online Setting.................................................................................................22 
Figure 16: Connect and Download – AGNSS Online ................................................................................22 
Figure 17: Download Selected File – AGNSS Online................................................................................ 23 
Figure 18: Successfully Downloaded to the Module – AGNSS Online......................................................23 
Figure 19: AGNSS Setting via QGNSS - Assistant GNSS Offline............................................................. 24 
Figure 20: Assistant GNSS Offline Setting.................................................................................................24 
Figure 21: Connect and Download – AGNSS Offline ................................................................................ 25 
Figure 22: Download Selected File – AGNSS Offline................................................................................ 25 
Figure 23: Successfully Downloaded to the Module – AGNSS Offline...................................................... 26 
Figure 24: Firmware Upgrade – Step 1......................................................................................................27 
Figure 25: Firmware Upgrade – Step 2......................................................................................................28 
Figure 26: Firmware Upgrade – Step 3......................................................................................................28 
Figure 27: Firmware Upgrade – Step 4......................................................................................................29 
Figure 28: Successful Firmware Upgrade ................................................................................................. 29 
 

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1Introduction

This document provides info on the steps needed to evaluate the Quectel L76 series modules using the

Evaluation Board (EVB). The EVB is a reference tool that allows you to become familiar with the L76 series

modules.

Specifically, the document is divided into several sections:

⚫Chapter 2 provides the general overview of EVB Kit accessories.

⚫Chapter 3 describes the EVB user interfaces.

⚫Chapter 4 describes how to communicate with a module by using the QCOM tool;

⚫Chapter 5 describes how to test the module by using the QGNSS tool;

⚫Chapter 6 describes how to upgrade firmware of the module by using the QGPSFlashTool;

⚫Chapter 7 is an appendix, which summarizes the relevant documents, terms and abbreviations

appearing herein.

In this document, Quectel L76 series includes L76, L76-L and L76-LB modules. For the EVB user guide of

L76-L (L) and L76-LB (L) modules, see document [4].

⚫

If you need EVB schematic and PCB layout design files for reference, request them from Quectel Technical

Supports (support@quectel.com).

NOTE

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2General Overview

2.1. EVB Kit Accessories

The EVB Kit includes Evaluation Board (EVB), Active GNSS Antenna, Micro-USB Cable, Bolts and

Coupling Nuts. You can download the software tools (QCOM, QGNSS, QGPSFlashTool) from our website

Download Zone or request them from Quectel Technical Supports.

The EVB Kit accessories are shown in the figure below, and check Table 1 for details.

Bolts and coupling nuts

EVB

Micro-USB cable

Active GNSS antenna

Figure 1: EVB Kit Accessories

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