Quectel LC86G Series User Manual
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Quectel LC86G Series User Manual

Quectel LC86G Series User Manual

Evb, gnss module
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LC86G Series
EVB User Guide
GNSS Module Series
Version: 1.0
Date: 2023-06-28
Status: Released

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Summary of Contents for Quectel LC86G Series

  • Page 1 LC86G Series EVB User Guide GNSS Module Series Version: 1.0 Date: 2023-06-28 Status: Released...

  • Page 2: Legal Notices

    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: Third-Party Rights

    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

    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.

  • Page 5: About The Document

    GNSS Module Series About the Document Document Information Title LC86G Series EVB User Guide Subtitle GNSS Module Series Document Type EVB User Guide Document Status Released Revision History Version Date Description 2022-07-29 Creation of the document 2023-06-28 First official release...

  • 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 General Overview ..........................9 EVB Kit ............................9 2.1. Connect Cables and Antenna to EVB ..................10 2.2.
  • Page 7 GNSS Module Series Table Index Table 1: List of Kit Components ........................9 Table 2: Detailed EVB Interfaces ....................... 12 Table 3: J401 Pin Assignment ........................12 Table 4: J401 Pin Detailed Description ...................... 13 Table 5: QGNSS Interface Explanation...................... 16 Table 6: Related Documents ........................
  • Page 8 GNSS Module Series Figure Index Figure 1: EVB Kit Components ........................9 Figure 2: EVB and Components Assembly ....................10 Figure 3: EVB Top View ..........................11 Figure 4: COM Port and Baud Rate Setting ....................14 Figure 5: QGNSS Interface (Connected) ....................15 Figure 6: Tool Startup ..........................

  • Page 9: Introduction

    GNSS Module Series Introduction This document provides information on the steps needed to evaluate the Quectel LC86G series module using the Evaluation Board (EVB). The EVB is a convenient tool that allows you to become familiar with the module. The Quectel LC86G series module includes three variants: LC86G (AA), LC86G (AB) and LC86G (LA).

  • Page 10: General Overview

    GNSS Module Series General Overview 2.1. EVB Kit The EVB kit includes: Evaluation Board (EVB), active GNSS antenna, Micro-USB cable, bolts and coupling nuts. The EVB kit components are shown in the figure below. Check Table 1: List of Kit Components for details.

  • Page 11: Connect Cables And Antenna To Evb

    Bolts and Coupling Nuts 4 pairs ⚫ NOTE Request Quectel Technical Support (support@quectel.com) for details about Quectel Active GNSS Antenna. 2.2. Connect Cables and Antenna to EVB The connection between the EVB and its components is shown in the figure below.

  • Page 12: Evb Interfaces

    GNSS Module Series EVB Interfaces 3.1. EVB Top View EVB top view is shown in the figure below. J403 (Antenna connector) D303 (1PPS indication LED) D304 (TXD indication LED) J401 (Test points) U404 (LC86G GNSS module) EVB Version S301 (RESET button) S101 (POWER switch) J103 (Micro-USB connector) Figure 3: EVB Top View...

  • Page 13: Evb Interfaces

    GNSS Module Series 3.2. EVB Interfaces The EVB interfaces are detailed in the table below. Table 2: Detailed EVB Interfaces Function Interfaces Description Power supply input: J103 ⚫ Power Supply DC power supply: 4.5–5.5 V, typ. 5.0 V Micro-USB connector ⚫...
  • Page 14 GNSS Module Series Table 4: J401 Pin Detailed Description Pin Name Description Ground Resets the module RESET 1PPS 1 pulse per second Transmits data Receives data NC (Not connected) 3.0V 3DFIX Ground LC86G_Series_EVB_User_Guide 13 / 31...

  • Page 15: Test And Firmware Upgrading Via Qgnss Tool

    GNSS Module Series Test and Firmware Upgrading via QGNSS Tool This chapter explains how to use the QGNSS software tool for verifying the status of GNSS module and firmware upgrade. For more information about QGNSS use, see document [2] QGNSS user guide.

  • Page 16: Qgnss Interface Explanation

    NOTE Ensure the CP210x driver has been installed when you use the QGNSS tool for the first time. For more information about the driver, please contact the Quectel Technical Support (support@quectel.com). 4.2. QGNSS Interface Explanation You can view GNSS information, such as C/N message, time, position, speed, and precision in the QGNSS interface.
  • Page 17 GNSS Module Series Table 5: QGNSS Interface Explanation Icon Explanation This sky view interface shows the position of the satellites in use. The left column icons show the number of satellites in use for each constellation. ⚫ BDS: 14 ⚫ GLO (GLONASS): 5 ⚫...

  • Page 18: Firmware Upgrading

    GNSS Module Series Icon Explanation ⚫ Longitude (unit: °) (Decimal Degrees) ⚫ Latitude (unit: °) (Decimal Degrees) ⚫ Altitude (MSL) (unit: m) ⚫ Receiver speed (unit: km/h) ⚫ Horizontal dilution of precision ⚫ Position dilution of precision ⚫ Fix Mode: 2D, 3D ⚫...
  • Page 19 GNSS Module Series Step 2: Select the “Download Baudrate” (921600 bps or 115200 bps) in the drop-down box of “Settings”. Figure 7: Tool Setting Step 3: Click the “Open Config File” button to select Config file, e.g., “flash_download.cfg”. Figure 8: Firmware Selecting LC86G_Series_EVB_User_Guide 18 / 31...
  • Page 20 GNSS Module Series “Run” button and then short press on the reset button after the progress bar prompts Step 4: Click the you to reset the module. Figure 9: Firmware Upgrading – 1 Figure 10: Firmware Upgrading – 2 LC86G_Series_EVB_User_Guide 19 / 31...
  • Page 21 GNSS Module Series Step 5: Upon successful firmware upgrading, the QGNSS tool’s progress bar on the screen will indicate “100 %”. Figure 11: Successful Firmware Upgrading LC86G_Series_EVB_User_Guide 20 / 31...

  • Page 22: Evb And Antenna Installation

    GNSS Module Series EVB and Antenna Installation 5.1. GNSS Antenna Installation The installation environment affects antenna reception performance and satellite visibility, which in turn affect the positioning performance of a GNSS receiver. In addition, antenna’s position and direction can also impact its reception performance. Therefore, it is important to avoid obstacles and interference when installing antenna.

  • Page 23: Measuring Power Consumption

    GNSS Module Series Measuring Power Consumption 6.1. Power Consumption at Different Stages Module power consumption is measured in three stages: acquisition and tracking (including almanac update), tracking (almanac update is over) and upon entering Backup mode. ⚫ Acquisition and Tracking (including almanac update): 0 s to 12.5 min ⚫...
  • Page 24 GNSS Module Series Ammeter Figure 13: VCC Power Consumption Measured with Ammeter Detailed steps for measuring VCC power consumption with a power consumption meter: Step 1: Switch off the power supply (S101) and pull out the J301 jumper cap. Make sure the positive terminal of the power consumption meter is connected to J301, and the negative terminal is connected to GND.

  • Page 25: V_Bckp Power Consumption Measurement

    GNSS Module Series 6.3. V_BCKP Power Consumption Measurement Before measuring the V_BCKP power consumption, you must connect the components to EVB to ensure Chapter 4.1 Testing via QGNSS. that the module can communicate and fix normally. See Detailed steps for measuring V_BCKP power consumption with an ammeter: Step 1: Switch off the power supply (S101) and pull out the J102 jumper cap.
  • Page 26 GNSS Module Series Power Consumption Meter V_BCKP Figure 16: V_BCKP Power Consumption Measured with Power Consumption Meter NOTE 1. Adjust the current resolution when using the power consumption meter. 2. Formula for calculating the power value: P = V × I Supply Test 3.

  • Page 27: Evb Framework

    GNSS Module Series EVB Framework The power is supplied to EVB via Micro-USB, and then to the GNSS module via a low-dropout regulator (LDO). GNSS module outputs the signals from communication interface on EVB via USB-to-UART Bridge Chip (CP2102). There are an antenna interface and a control button on EVB. All functions of the module are available, including debugging.

  • Page 28: Common Problems And Troubleshooting

    Verify whether the module is in normal operating mode. ⚫ Check that the downloaded firmware is correct. ⚫ Confirm that the correct COM port has been selected. NOTE For the problem(s) that cannot be solved, please contact Quectel Technical Support (support@quectel.com). LC86G_Series_EVB_User_Guide 27 / 31...

  • Page 29: Cautions

    ⚫ Ensure that the measurement method is correct. If there are significant differences between parameters tested via EVB and those provided by Quectel, please contact Quectel Technical Support. ⚫ Note that momentary data obtained from measurement cannot always be regarded as reference data, because it may be affected by various factors, such as satellite positions at different times, environmental conditions, temperature, humidity and altitude.

  • Page 30: Appendix References

    GNSS Module Series Appendix References Table 6: Related Documents Document Name Quectel_LC86G_Series_Hardware_Design [2] Quectel_QGNSS_User_Guide Quectel_LC26G&LC76G&LC86G_Series_GNSS_Protocol_Specification Table 7: Terms and Abbreviations Abbreviation Description 1PPS Pulse Per Second 2 Dimension 3 Dimension BeiDou Navigation Satellite System Circular Error Probable COM Port Communication Port Carrier-to-noise Ratio Direct Current DGNSS...
  • Page 31 GNSS Module Series Abbreviation Description Evaluation Board Galileo Galileo Satellite Navigation System (EU) GLONASS Global Navigation Satellite System (Russia) Ground GNSS Global Navigation Satellite System Global Positioning System Input/Output NAVIC Indian Regional Navigation Satellite System Light Emitting Diode Micro-USB Micro Universal Serial Bus Mean Sea Level NMEA NMEA (National Marine Electronics Association) 0183 Interface Standard...
  • Page 32 GNSS Module Series Abbreviation Description TTFF Time to First Fix Transmit Data (Pin) UART Universal Asynchronous Receiver/Transmitter Universal Serial Bus Coordinated Universal Time LC86G_Series_EVB_User_Guide 31 / 31...

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Lc86g aaLc86g abLc86g la

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