Download
Share
Print this page
Quectel LC26G-T User Manual
  1. Manuals
  2. Brands
  3. Quectel Manuals
  4. Control Unit
  5. LC26G-T
  6. User manual
Quectel LC26G-T User Manual

Quectel LC26G-T User Manual

Hide thumbs

Advertisement

Quick Links

Download this manual
LC26G-T (AA)
EVB User Guide
GNSS Module Series
Version: 1.0
Date: 2023-12-11
Status: Released

Advertisement

loading
Need help?

Need help?

Do you have a question about the LC26G-T and is the answer not in the manual?

Questions and answers

Related Manuals for Quectel LC26G-T

Summary of Contents for Quectel LC26G-T

  • Page 1 LC26G-T (AA) EVB User Guide GNSS Module Series Version: 1.0 Date: 2023-12-11 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-T (AA) EVB User Guide Subtitle GNSS Module Series Document Type EVB User Guide Document Status Released Revision History Version Date Description 2023-10-31 Creation of the document 2023-12-11 First official release...
  • Page 6 Power Consumption at Different Stages ................. 21 6.2. VCC Power Consumption Measurement ................21 6.3. V_BCKP Power Consumption Measurement ................. 23 EVB Framework ..........................25 Common Problems and Troubleshooting ..................26 Cautions ............................27 10 Appendix References ........................28 LC26G-T(AA)_EVB_User_Guide 5 / 30...
  • Page 7 Table 1: List of Kit Components ....................... 10 Table 2: Detailed EVB Interfaces ......................13 Table 3: J401 Pin Description ........................14 Table 4: QGNSS Interface Explanation ....................18 Table 5: Related Documents ........................28 Table 6: Terms and Abbreviations ......................28 LC26G-T(AA)_EVB_User_Guide 6 / 30...
  • Page 8 Figure 8: VCC Power Consumption Measured with Power Consumption Meter ........22 Figure 9: V_BCKP Power Consumption Measured with Ammeter ............23 Figure 10: V_BCKP Power Consumption Measured with Power Consumption Meter ......24 Figure 11: EVB Framework ........................25 LC26G-T(AA)_EVB_User_Guide 7 / 30...
  • Page 9 GNSS Module Series Introduction This document provides information on the steps needed to evaluate the Quectel LC26G-T (AA) module using the Evaluation Board (EVB). The EVB is a convenient tool that allows you to become familiar with the LC26G-T (AA) module.
  • Page 10 The EVB kit components are shown in the figure below. Check for details. Table 1: List of Kit Components Type-B USB Cables Active GNSS Antenna Bolts and Coupling Nuts Figure 1: EVB Kit Components LC26G-T(AA)_EVB_User_Guide 9 / 30...
  • Page 11  Galileo E1  BDS B1I, B1C  QZSS L1 C/A  SBAS L1  Other Bolts and Coupling Nuts 4 pairs  NOTE Contact Quectel Technical Support (support@quectel.com) for details about Quectel Active GNSS Antenna. LC26G-T(AA)_EVB_User_Guide 10 / 30...
  • Page 12 Thus, it is optional to connect PC and the “POWER SUPPLY” (J201) on the EVB via Type-B USB. For more information, see Chapter 3.2 EVB Interfaces. Make sure that the active GNSS antenna is placed with a clear line of sight to the sky. LC26G-T(AA)_EVB_User_Guide 11 / 30...
  • Page 13 J501 (USB to UART) D507 (TXD and 1PPS indication LEDs) Test point 16 Test point 15 EVB version J401 (Test points) U601 (LC26G-T (AA) module) Test point 1 Test point 30 J101 (ANT connector) S502 (RESET button) J510 (1PPS connector)
  • Page 14 Indication LEDs TXD pin. (Green) Extinct or Bright: No data are output from 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-T(AA)_EVB_User_Guide 13 / 30...
  • Page 15 GNSS Module Series The J401 test points of LC26G-T (AA) EVB is shown below: Table 3: J401 Pin Description Test Point No. Test Point Label Test Point Function Description Ground PIN1 U601: Pin 1 Reserved PIN2 U601: Pin 2 Reserved...
  • Page 16 Figure 3: EVB View. A J401 test point refers to the module’s corresponding function. For detailed descriptions, see design. For more information on the reference circuits of module pins, see document [1] hardware document [2] reference design. LC26G-T(AA)_EVB_User_Guide 15 / 30...
  • Page 17 This chapter explains how to use the QGNSS software tool for verifying the status of GNSS module. For more information about QGNSS use, see document [3] QGNSS user guide. In addition, you can upgrade firmware of LC26G-T (AA) via QGNSS tool, see for details. document [4] firmware upgrade guide 4.1. Test via QGNSS Step 1: Assemble the EVB components.
  • Page 18 Ensure that the CP210x driver is installed before using the QGNSS tool for the first time. For more information about the driver, contact the Quectel Technical Support (support@quectel.com). For more information on standard NMEA messages supported on the module, see...
  • Page 19  used. Examples:  PRN 30 C/N is 39 dB-Hz and used in solution.  PRN 1 C/N is 21 dB-Hz and not used in solution.  LC26G-T(AA)_EVB_User_Guide 18 / 30...
  • Page 20 UTC time  Total Times  Fixed Points  RTK Fixed  RTK Float  Age of differential GPS data  Last TTFF (unit: s)  2D accuracy (unit: m)  3D accuracy (unit: m)  LC26G-T(AA)_EVB_User_Guide 19 / 30...
  • Page 21 5.2. EVB Installation If dynamic testing is required, make sure the EVB is fixed to the device under test to avoid any movement or vibration with respect to the device. LC26G-T(AA)_EVB_User_Guide 20 / 30...
  • Page 22 Step 1: Switch off the power supply (S201) and pull out the VCC_MODULE jumper cap (J601). Connect the ammeter in series to the pins of J601 as shown below. Step 2: Switch on the power supply (S201) and read the ammeter. LC26G-T(AA)_EVB_User_Guide 21 / 30...
  • Page 23 Step 2: Switch on the power supply (S201) and power consumption meter in sequence. Then read the power consumption meter once the power consumption meter reading is stable. Power Consumption Meter Figure 8: VCC Power Consumption Measured with Power Consumption Meter LC26G-T(AA)_EVB_User_Guide 22 / 30...
  • Page 24 J202, and the negative pole is connected to GND. Step 2: Switch on the power consumption meter and power supply (S201) in sequence. Then read the power consumption meter once the power consumption meter reading is stable. LC26G-T(AA)_EVB_User_Guide 23 / 30...
  • Page 25 Adjust the current resolution when using the power consumption meter. Formula for calculating the power value: P = V × I Supply Test Before measuring the V_BCKP power consumption, remove the jumper cap of VCC_MODULE (J601) to cut off the power supply of VCC. LC26G-T(AA)_EVB_User_Guide 24 / 30...
  • Page 26 3.3 V 1.8 V 1.8 V Power Switch V_BCKP Type-B Antenna RF_IN Interface Interface USB to UART Module Type-B RESET_N Bridge Chip: Button Interface CP2102N Test Points Figure 11: EVB Framework LC26G-T(AA)_EVB_User_Guide 25 / 30...
  • Page 27 Check if the module is in normal operating mode.  Verify that the downloaded firmware is correct.  Confirm that the correct COM port has been selected.   NOTE For the problem(s) that cannot be solved, you can contact Quectel Technical Support (support@quectel.com). LC26G-T(AA)_EVB_User_Guide 26 / 30...
  • Page 28 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, ...
  • Page 29 GNSS Module Series Appendix References Table 5: Related Documents Document Name [1] Quectel_LC26G-T(AA)_Hardware_Design [2] Quectel_LC26G-T(AA)_Reference_Design Quectel_QGNSS_User_Guide [4] Quectel_LC26G&LC26G-T&LC76G&LC86G_Series_Firmware_Upgrade_Guide [5] Quectel_LC26G&LC26G-T&LC76G&LC86G_Series_GNSS_Protocol_Specification Table 6: Terms and Abbreviations Abbreviation Description 2 Dimension 3 Dimension BeiDou Navigation Satellite System COM Port Communication Port Carrier-to-noise Ratio...
  • Page 30 NMEA (National Marine Electronics Association) 0183 Interface Standard Personal Computer Printed Circuit Board Power Input Power Output 1PPS Pulse Per Second Pseudo Random Noise QZSS Quasi-zenith Satellite System Radio Frequency Real-time Kinematic Receive Data (Pin) SBAS Satellite-based Augmentation System LC26G-T(AA)_EVB_User_Guide 29 / 30...
  • Page 31 GNSS Module Series Abbreviation Description Serial Clock Line Serial Data Line SubMiniature Version A TTFF Time to First Fix Transmit Data (Pin) UART Universal Asynchronous Receiver/Transmitter Universal Serial Bus Coordinated Universal Time LC26G-T(AA)_EVB_User_Guide 30 / 30...

This manual is also suitable for:

Lc26g-taa