Quectel LC76F User manual

LC76F EVB User Guide
GNSS Module Series
Version: 1.0
Date: 2022-06-23
Status: Released

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Copyright © Quectel Wireless Solutions Co., Ltd. 2022. All rights reserved.

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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 LC76F 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
LC76F EVB User Guide
Subtitle
GNSS Module Series
Document Type
EVB User Guide
Document Status
Released
Version
Date
Description
-
2021-07-21
Creation of the document
1.0
2022-06-23
First official release

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Contents
Safety Information...................................................................................................................................... 3
About the Document.................................................................................................................................. 4
Contents...................................................................................................................................................... 5
Table Index.................................................................................................................................................. 6
Figure Index................................................................................................................................................ 7
1Introduction......................................................................................................................................... 8
1.1. Special Marks............................................................................................................................. 8
2General Overview................................................................................................................................ 9
2.1. EVB Kit....................................................................................................................................... 9
2.2. Connecting Cables and Antenna to EVB................................................................................. 10
3EVB Interfaces................................................................................................................................... 12
3.1. EVB Top View........................................................................................................................... 12
3.2. EVB Interfaces ......................................................................................................................... 13
4Communication via QCOM Tool...................................................................................................... 15
4.1. Communication via the Micro-USB Interface........................................................................... 15
5Test via QGNSS Tool........................................................................................................................ 17
5.1. QGNSS Setting........................................................................................................................ 17
5.1.1. QGNSS Interface Explanation ...................................................................................... 19
6Firmware Upgrade via QGPSFlashTool.......................................................................................... 21
6.1. Firmware Upgrade ................................................................................................................... 21
7Appendix References....................................................................................................................... 25

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Table Index
Table 1: Special Marks ................................................................................................................................. 8
Table 2: List of Kit Components ................................................................................................................. 10
Table 3: Detailed EVB Interfaces ...............................................................................................................13
Table 4: J106 Pin Assignment....................................................................................................................13
Table 5: J106 Pin Detailed Description ...................................................................................................... 14
Table 6: QGNSS Interface Explanation......................................................................................................19
Table 7: Related Documents......................................................................................................................25
Table 8: Terms and Abbreviations ..............................................................................................................25

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Figure Index
Figure 1: EVB and Components .................................................................................................................. 9
Figure 2: EVB and Components Assembly................................................................................................10
Figure 3: EVB Top View ............................................................................................................................. 12
Figure 4: USB Port ..................................................................................................................................... 15
Figure 5: COM Port Setting Interface of QCOM ........................................................................................15
Figure 6: NMEA Messages Output – Displayed on QCOM Tool Interface ................................................ 16
Figure 7: QCOM Port and Baud Rate Setting............................................................................................ 18
Figure 8: QGNSS Interface (Connected)...................................................................................................18
Figure 9: Firmware Upgrade –Step 1........................................................................................................22
Figure 10: Firmware Upgrade – Step 2......................................................................................................22
Figure 11: Firmware Upgrade – Step 3......................................................................................................23
Figure 12: Firmware Upgrade – Step 4......................................................................................................23
Figure 13: Successful Firmware Upgrade ................................................................................................. 24

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1Introduction
This document provides information on the steps needed to evaluate the Quectel LC76F module using the
Evaluation Board (EVB). The EVB is a convenient tool that allows you to become familiar with the LC76F
module.
Specifically, the document is divided into several sections:
⚫Chapter 2 provides the general overview of EVB Kit.
⚫Chapter 3 describes the EVB user interfaces.
⚫Chapter 4 describes how to communicate with a module via QCOM tool.
⚫Chapter 5 describes how to test the module via QGNSS tool.
⚫Chapter 6 describes how to upgrade the module firmware via QGPSFlashTool.
⚫Chapter 7 is an appendix, which summarizes the relevant documents, terms and abbreviations
appearing herein.
1.1. Special Marks
Table 1: Special Marks
⚫
For EVB schematic and PCB layout design files, contact Quectel Technical Support
([e-mail]).
Mark
Definition
*
Unless otherwise specified, when an asterisk (*) is used after a function, feature, interface,
pin name, or argument, it indicates that the function, feature, interface, pin, or argument is
under development and currently not supported; and the asterisk (*) after a model indicates
that the sample of the model is currently unavailable.
NOTE

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2General Overview
2.1. EVB Kit
The EVB Kit includes: Evaluation Board (EVB), Active GNSS Antenna, Micro-USB Cable, USB flash drive,
Bolts and Coupling Nuts. Download the software tools (QCOM, QGNSS, QGPSFlashTool) from our
website Download Zone or request them from Quectel Technical Support.
The EVB Kit components are shown in the figure below, and check Table 1 for details.
Bolts and coupling nuts
Micro-USB cable
USB Flash Drive
Active GNSS antenna
EVB
Figure 1: EVB and Components