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Quectel LC26G User Manual
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Quectel LC26G User Manual

Quectel LC26G User Manual

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LC26G (AB)
EVB User Guide
GNSS Module Series
Version: 1.0
Date: 2023-03-29
Status: Released

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Summary of Contents for Quectel LC26G

  • Page 1 LC26G (AB) EVB User Guide GNSS Module Series Version: 1.0 Date: 2023-03-29 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 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 GNSS Module Series About the Document Document Information Title LC26G (AB) EVB User Guide Subtitle GNSS Module Series Document Type EVB User Guide Document Status Released Revision History Version Date Description 2022-08-12 Creation of the document 2023-03-29 First official release...
  • Page 6 Power Consumption at Different Stages.................. 24 6.1. VCC Power Consumption Measurement ................. 24 6.2. V_BCKP Power Consumption Measurement ................26 6.3. EVB Framework..........................28 Common Problems and Troubleshooting ..................29 Cautions ............................. 30 10 Appendix References ........................31 LC26G(AB)_EVB_User_Guide 5 / 33...
  • Page 7 Table 2: List of Kit Components ......................... 10 Table 3: Detailed EVB Interfaces ....................... 13 Table 4: J401 Pin Description........................14 Table 5: QGNSS Interface Explanation...................... 18 Table 6: Related Documents ........................31 Table 7: Terms and Abbreviations ......................31 LC26G(AB)_EVB_User_Guide 6 / 33...
  • Page 8 Figure 15: VCC Power Consumption Measured with Power Consumption Meter ........25 Figure 16: V_BCKP Power Consumption Measured with Ammeter ............26 Figure 17: V_BCKP Power Consumption Measured with Power Consumption Meter ......27 Figure 18: EVB Framework ........................28 LC26G(AB)_EVB_User_Guide 7 / 33...
  • Page 9 GNSS Module Series Introduction This document provides information on the steps needed to evaluate the Quectel LC26G (AB) module using the Evaluation Board (EVB). The EVB is a convenient tool that allows you to become familiar with the LC26G (AB) module.
  • Page 10 The EVB kit components are shown in the figure below. Check Table 2: List of Kit Components for details. Bolts and Coupling Nuts Type-B USB Cables Active GNSS Antenna Figure 1: EVB Kit Components LC26G(AB)_EVB_User_Guide 9 / 33...
  • Page 11 Galileo E1 Length ⚫ B1I* B1C* ⚫ QZSS L1 C/A Sheet providing instructions on how to connect the EVB and its Instructions Sheet components, detailed information on EVB components, etc. Others Bolts and Coupling Nuts 4 pairs LC26G(AB)_EVB_User_Guide 10 / 33...
  • Page 12 EVB and its components, refer to the instruction sheet inside the EVB Kit. Figure 2: EVB and Components Assembly ⚫ NOTE Make sure that the active GNSS antenna is placed with a clear line of sight to the sky. LC26G(AB)_EVB_User_Guide 11 / 33...
  • Page 13 D507 (1PPS and TXD indication LEDs) Test point 16 Test point 15 EVB version J401 (Test points) U601 (LC26G (AB) GNSS module) Test point 1 J101 (GNSS antenna connector) S502 (RESET button) J510 (1PPS connector) Figure 3: EVB Top View...
  • Page 14 TXD pin. Extinct or Bright: No data are output from (Green LED) UART TXD pin. S201 Powers the module on/off. Power switch Switches and Buttons S502 Short press on the button to reset the RESET module. LC26G(AB)_EVB_User_Guide 13 / 33...
  • Page 15 LNA and active antenna PIN15 U601: Pin 15 Reserved PIN16 U601: Pin 16 Reserved PIN17 U601: Pin 17 Reserved No label NC (Not Connected) No label No label No label No label No label No label LC26G(AB)_EVB_User_Guide 14 / 33...
  • Page 16 Test points of J401 are arranged clockwise, and their serial numbers are shown in Figure 3: EVB View. A J401 test point refers to the module’s corresponding function. For detailed descriptions, see document [1] hardware design. LC26G(AB)_EVB_User_Guide 15 / 33...
  • Page 17 Figure 4: COM 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. UART interface default settings may vary depending on software versions. LC26G(AB)_EVB_User_Guide 16 / 33...
  • Page 18 (Lon (Degree)), latitude (Lat (Degree)), and altitude (Alt (Degree)) in the LLA column, and then select “Calculate CEP50” to convert WGS84 to the X, Y, Z coordinates of ECEF, as shown the figures below. Figure 6: Converting WGS84 to ECEF (1) LC26G(AB)_EVB_User_Guide 17 / 33...
  • Page 19 This sky view interface shows the position of the satellites in use. The left column icons show the satellites in use and their numbers. ⚫ BDS: 6 ⚫ GLO (GLONASS): 3 ⚫ GPS: 12 ⚫ GAL (Galileo): 0 ⚫ QZSS: 0 ⚫ NAVIC: 0 ⚫ SBAS: 0 LC26G(AB)_EVB_User_Guide 18 / 33...
  • Page 20 Time: UTC time Total Times ⚫ ⚫ Fixed Points ⚫ RTK Fixed RTK Float ⚫ ⚫ Age of differential GPS data ⚫ Last TTFF (unit: second) 2D accuracy (unit: meter) ⚫ ⚫ 3D accuracy (unit: meter) LC26G(AB)_EVB_User_Guide 19 / 33...
  • Page 21 Step 1: Open QGNSS tool, and click “Tools” and select “Firmware Download” in the drop-down box. Figure 8: Tool Startup Step 2: Select the appropriate “Download Baudrate” in the drop-down box of “Settings”. Figure 9: Tool Setting LC26G(AB)_EVB_User_Guide 20 / 33...
  • Page 22 “Open Config File” button to select Config file, e.g., “flash_download.cfg”. Figure 10: Firmware Selecting Step 4: Click the “Run” button and then short press the reset button after the progress bar prompts you to reset the module. Figure 11: Firmware Upgrading LC26G(AB)_EVB_User_Guide 21 / 33...
  • Page 23 Step 5: Upon successful firmware upgrading, the QGNSS tool’s progress bar on the screen will indicate “100 %”. Figure 12: Successful Firmware Upgrading ⚫ NOTE Make sure the module is in Continuous mode before firmware upgrading. LC26G(AB)_EVB_User_Guide 22 / 33...
  • Page 24 5.2. EVB Installation If dynamic testing is required, make sure the EVB is fixed to the device under test. No relative movement or vibration between the antenna and device is allowed. LC26G(AB)_EVB_User_Guide 23 / 33...
  • Page 25 Step 1: Switch off the power supply (S201) and pull out the VCC_MODULE jumper cap (J601). Connect the ammeter in series to both ends of the head pins of J601 as shown below. Step 2: Switch on the power supply (S201) and read the ammeter. LC26G(AB)_EVB_User_Guide 24 / 33...
  • Page 26 J601, and the negative pole is connected to GND. Step 2: Switch on the power supply (S201) and read the power consumption meter. Power Consumption Meter Figure 15: VCC Power Consumption Measured with Power Consumption Meter LC26G(AB)_EVB_User_Guide 25 / 33...
  • Page 27 1 (with arrow silkscreen) of J202, and the negative pole is connected to GND. Step 2: Switch on the power supply (S201) and read the power consumption meter. LC26G(AB)_EVB_User_Guide 26 / 33...
  • Page 28 Figure 17: 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 LC26G(AB)_EVB_User_Guide 27 / 33...
  • Page 29 (CP2102N). There are an antenna interface and a control button on EVB. All functions of the module are available, including debugging. 3.3 V Power Switch Type-B V_BCKP Antenna Interface Interface USB to UART Type-B Module Bridge Chip: RESET_N Interface Button CP2102N Test Points Figure 18: EVB Framework LC26G(AB)_EVB_User_Guide 28 / 33...
  • Page 30 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. LC26G(AB)_EVB_User_Guide 29 / 33...
  • Page 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.
  • Page 32 BeiDou Navigation Satellite System Circular Error Probable COM Port Communication Port Direct Current Digital Input Digital Output Dead Reckoning Ellipsoidal Height Electrostatic Discharge Evaluation Board Galileo Galileo Satellite Navigation System (EU) GLONASS Global Navigation Satellite System (Russia) LC26G(AB)_EVB_User_Guide 31 / 33...
  • Page 33 Pulse Per Second Pseudo Random Noise QZSS Quasi-Zenith Satellite System Radio Frequency Root Mean Square Real Time Kinematic Receive Data (Pin) SBAS Satellite-Based Augmentation System Serial Clock Line Serial Data Line TTFF Time to First Fix LC26G(AB)_EVB_User_Guide 32 / 33...
  • Page 34 GNSS Module Series Abbreviation Description Transmit Data (Pin) UART Universal Asynchronous Receiver/Transmitter Universal Serial Bus Coordinated Universal Time LC26G(AB)_EVB_User_Guide 33 / 33...

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