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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...
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.
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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 ........................
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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 ..........................
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).
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.
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.
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 ⚫...
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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...
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.
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.
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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 ⚫...
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 ⚫...
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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...
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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...
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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...
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.
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 ⚫...
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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.
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.
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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.
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.
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...
⚫ 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.
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...
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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...
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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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