Quectel LC76F User Manual
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Quectel LC76F User Manual

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

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Summary of Contents for Quectel LC76F

  • Page 1 LC76F EVB User Guide GNSS Module Series Version: 1.0 Date: 2022-06-23 Status: Released...
  • Page 2 GNSS Module Series At Quectel, our aim is to provide timely and comprehensive services to our customers. If you require any assistance, please contact our headquarters: Quectel Wireless Solutions Co., Ltd. Building 5, Shanghai Business Park Phase III (Area B), No.1016 Tianlin Road, Minhang District, Shanghai...
  • Page 3 Except as otherwise set forth herein, nothing in this document shall be construed as conferring any rights to use any trademark, trade name or name, abbreviation, or counterfeit product thereof owned by Quectel or any third party in advertising, publicity, or other aspects.

  • Page 4: 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.

  • Page 5: About The Document

    GNSS Module Series About the Document Document Information Title LC76F EVB User Guide Subtitle GNSS Module Series Document Type EVB User Guide Document Status Released Revision History Version Date Description 2021-07-21 Creation of the document 2022-06-23 First official release LC76F_EVB_User_Guide...

  • Page 6: Table Of Contents

    GNSS Module Series Contents Safety Information ............................3 About the Document ..........................4 Contents ..............................5 Table Index ..............................6 Figure Index ..............................7 Introduction ............................8 1.1. Special Marks ..........................8 General Overview ..........................9 2.1. EVB Kit ............................9 2.2.
  • Page 7 GNSS Module Series 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......................
  • Page 8 GNSS Module Series 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 –...

  • Page 9: Introduction

    Introduction 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: ⚫...

  • Page 10: General Overview

    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.

  • Page 11: Connecting Cables And Antenna To Evb

    8 GB USB Flash Drive (including the module-related USB Flash Drive documents, tools and drivers) Active GNSS Antenna GNSS Antenna Request the Antenna Datasheet from Quectel Technical Support. Sheet providing instructions on how to connect the EVB Instruction Sheet and its components, detailed information on EVB contents, etc.
  • Page 12 GNSS Module Series ⚫ NOTE Make sure that the Active GNSS Antenna is placed with a clear line of sight to the sky. LC76F_EVB_User_Guide 11 / 26...

  • Page 13: Evb Interfaces

    GNSS Module Series EVB Interfaces 3.1. EVB Top View EVB top view is shown in the figure below. U101 J106 LC76F module Test points J101 Antenna connector D101 1PPS and TXD Indication LEDs J201 Micro-USB connector S301 UART↔USB switch S201...

  • Page 14: Evb Interfaces

    GNSS Module Series 3.2. EVB Interfaces The EVB interfaces are detailed in the table below. Table 3: Detailed EVB Interfaces Interfaces Function Description Power supply input: J201 ⚫ Power Supply DC power supply: 4.5–5.5 V, typ. 5.0 V Micro-USB ⚫ Current capability should be >...
  • Page 15 GNSS Module Series Table 5: J106 Pin Detailed Description Pin Name Description 32K/DRIN AADET_N 1 pulse per second 1PPS STANDBY Ground TIMER Resets the module RESET_N Transmits data Receives the data Ground LC76F_EVB_User_Guide 14 / 26...

  • Page 16: Communication Via Qcom Tool

    Step 4: View the USB port numbers in the Device Manager, as shown in Figure 4 below. Figure 4: USB Port Step 5: Install the QCOM tool provided by Quectel. The COM Port Setting interface of QCOM is shown in Figure 5 below. (Default baud rate: 9600 bps Figure 5: COM Port Setting Interface of QCOM UART interface default settings may vary depending on software versions.
  • Page 17 GNSS Module Series Step 6: Select the correct “COM Port” (USB Port shown in Figure 4 above). Step 7: Set the correct “Baudrate”. Step 8: Click “Open Port” to establish communication with the EVB. The NMEA messages output by the module will be displayed in the receiving bar of the QCOM tool, as shown in the figure below.

  • Page 18: Test Via Qgnss Tool

    This chapter explains how to use the QGNSS tool for verifying the status of GNSS module. For more information about QGNSS usage, see document [2]. Download the QGNSS tool from our website Download Zone or request it from Quectel Technical Support. 5.1. QGNSS Setting Step 1: Assemble the EVB components.
  • Page 19 GNSS Module Series Figure 7: QCOM Port and Baud Rate Setting Step 4: Click the “Connect or disconnect” button. The interface shown in the figure below appears once the module is connected. Figure 8: QGNSS Interface (Connected) LC76F_EVB_User_Guide 18 / 26...

  • Page 20: Qgnss Interface Explanation

    GNSS Module Series 5.1.1. QGNSS Interface Explanation You can view GNSS information, such as C/N message, time, position, speed, and precision in the QGNSS interface. See the following table to find out more about these parameters. Table 6: QGNSS Interface Explanation Icon Explanation The sky view interface shows the position of the satellites in use.
  • Page 21 GNSS Module Series Longitude (unit: degree) ⚫ ⚫ Latitude (unit: degree) ⚫ Altitude (MSL) (unit: m) Altitude (EPH) (unit: m) ⚫ ⚫ Receiver speed (unit: km/h) ⚫ Horizontal dilution of precision ⚫ Position dilution of precision ⚫ Fix Mode: 2D, 3D ⚫...

  • Page 22: Firmware Upgrade Via Qgpsflashtool

    GNSS Module Series Firmware Upgrade via QGPSFlashTool Quectel LC76F module upgrades firmware via the UART interface using QGPSFlashTool. For more information about QGPSFlashTool useage, see document [3]. Download the QGPSFlashTool from our website Download Zone or request it from Quectel Technical Support.
  • Page 23 Figure 9: Firmware Upgrade – Step 1 Step 2: In the “Options” popup window, set the number of channels to be used. In the “Tool Options” drop-down box, select “LC76F” and then click “OK” as shown in the figure below. ②...
  • Page 24 GNSS Module Series ③ Figure 11: Firmware Upgrade – Step 3 Step 4: Select the “Serial Port” and “Baudrate” of the COM Port that will be used (the selected baud rate will affect the firmware download speed) and then click “Start” button to start downloading the firmware, as shown in the figure below.
  • Page 25 GNSS Module Series Figure 13: Successful Firmware Upgrade ⚫ NOTE Make sure the module is in Continuous mode before upgrading the firmware. LC76F_EVB_User_Guide 24 / 26...

  • Page 26: Appendix References

    GNSS Module Series Appendix References Table 7: Related Documents Document Name Quectel_QCOM_User_Guide [2] Quectel_QGNSS_User_Guide [3] Quectel_QGPSFlashTool_User_Guide Table 8: Terms and Abbreviations Abbreviation Description 2 Dimension 3 Dimension BeiDou Navigation Satellite System COM Port Communication Port Carrier-to-Noise Ratio Digital Input Digital Output Electrostatic Discharge Evaluation Board Galileo...
  • Page 27 GNSS Module Series GNSS Global Navigation Satellite System Global Positioning System Input/Output Light Emitting Diode Micro-USB Micro Universal Serial Bus NMEA NMEA (National Marine Electronics Association) 0183 Interface Standard Personal Computer Power Input Power Output 1PPS One Pulse Per Second QZSS Quasi-Zenith Satellite System Receive Data (Pin)

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