Quectel LC76G Series User Manual Download

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LC76G Series

EVB User Guide

GNSS Module Series

Version: 1.0

Date: 2023-04-21

Status: Released

Summary of Contents for LC76G Series

Page 1: ...LC76G Series EVB User Guide GNSS Module Series Version 1 0 Date 2023 04 21 Status Released...

Page 2: ...employ commercially reasonable efforts to provide the best possible experience you hereby acknowledge and agree that this document and related services hereunder are provided to you on an as availabl...

Page 3: ...implement module functionality certain device data are uploaded to Quectel s or third party s servers including carriers chipset suppliers or customer designated servers Quectel strictly abiding by t...

Page 4: ...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 Keep away from explosiv...

Page 5: ...Document Revision History Document Information Title LC76G Series EVB User Guide Subtitle GNSS Module Series Document Type EVB User Guide Document Status Released Version Date Description 2022 07 19 C...

Page 6: ...ces 13 4 Test and Firmware Upgrade via QGNSS Tool 16 4 1 Test via QGNSS 16 4 2 QGNSS Interface Explanation 17 4 3 Firmware Upgrading 19 5 EVB and Antenna Installation 22 5 1 GNSS Antenna Installation...

Page 7: ...3 Table Index Table 1 Special Mark 8 Table 2 List of Kit Components 10 Table 3 Detailed EVB Interfaces 13 Table 4 J402 Pin Detailed Description 14 Table 5 QGNSS Interface Explanation 17 Table 6 Relate...

Page 8: ...20 Figure 9 Firmware Upgrading 20 Figure 10 Successful Firmware Upgrading 21 Figure 11 Power Consumption at Different Stages 23 Figure 12 Measured with Ammeter for VCC or in ALP Mode 24 Figure 13 Mea...

Page 9: ...na Chapter 6 describes how to measure power consumption for the module Chapter 7 provides the EVB framework Chapter 8 describes the common problems and troubleshooting Chapter 9 describes the cautions...

Page 10: ...B kit includes Evaluation Board EVB active GNSS antenna Type B USB cable bolts and coupling nuts The EVB kit contents are shown in the figure below Check Table 2 List of Kit Components for details EVB...

Page 11: ...e Type B USB Cable 1 GNSS Antenna Active GNSS Antenna Model YEGM020AA Antenna Size 47 mm 55 mm 16 2 mm Cable Length 3000 mm 1 The GNSS antenna supports GPS L1 C A GLONASS L1 Galileo E1 BDS B1I BIC QZS...

Page 12: ...33 2 2 Connect Cable and Antenna to EVB The connection between the EVB and its components is shown in the figure below Figure 2 EVB and Components Assembly Make sure that the active GNSS antenna is p...

Page 13: ...the figure below U103 LC76G GNSS module D520 TXD and 1PPS indication LEDs J103 Antenna connector S503 RESET button J402 Test points EVB version D514 POWER and VCC indication LEDs S201 Power switch J5...

Page 14: ...ata and firmware upgrade SMA Connectors J103 Antenna connector Used for connecting GNSS antenna U512 1PPS connector Used for testing 1PPS signal Signal Indication D514 Indication LEDs POWER Red Bright...

Page 15: ...r saving mode 8 15 U103 Pin 15 Reserved 9 17 U103 Pin 17 DI I2C_SCL I2C serial clock 10 19 U103 Pin 19 Reserved 11 21 U103 Pin 21 DO GEOFENCE Indicates geofence status 12 23 U103 Pin 23 DO 3D_FIX 3D p...

Page 16: ...26 10 GND Ground 27 8 U103 Pin 8 PI VCC Main power supply 28 6 U103 Pin 6 PI V_BCKP Backup power supply for backup domain of module 29 4 U103 Pin 4 DO 1PPS 1 pulse per second 30 PIN2 U103 Pin 2 DO TX...

Page 17: ...NSS use see document 2 QGNSS user guide 4 1 Test via QGNSS Step 1 Assemble the EVB components Step 2 Connect the EVB and the PC with a Type B USB cable then flip the power switch S201 of the module to...

Page 18: ...anation You can view GNSS information such as C N0 message time position speed and precision in the QGNSS interface See the following table to find out more about these parameters Table 5 QGNSS Interf...

Page 19: ...a of the satellites are in use PRN 1 C N0 is 21 dB Hz Column in light red means that the navigation data of the satellites are not in use Longitude unit Latitude unit Altitude MSL unit m Receiver spee...

Page 20: ...ia QGNSS for details Firmware upgrading steps Step 1 Open QGNSS tool and click Tools and select Firmware Download in the drop down box Figure 6 Tool Startup Step 2 Select the appropriate Download Baud...

Page 21: ...re Selecting Step 4 Click the Run button and then short press on the reset button after the progress bar prompts you to reset the module Figure 9 Firmware Upgrading Step 5 Upon successful firmware upg...

Page 22: ...GNSS Module Series LC76G_Series_EVB_User_Guide 21 33 Figure 10 Successful Firmware Upgrading Make sure the module is in Continuous mode before upgrading firmware NOTE...

Page 23: ...eception performance Therefore it is important to avoid obstacles and interference when installing antenna Place the ceramic patch antenna horizontally and make sure it faces toward the sky If dynamic...

Page 24: ...s over 12 5 min Entering ALP mode Entering Backup mode 12 5 min Acquisition and Tracking including almanac update Tracking almanac update is over Time Enter Backup Mode Enter ALP Mode VCC V_BCKP 0 12...

Page 25: ...LE jumper cap J102 Connect the ammeter in series to the pins of J102 as shown below Step 2 Switch on the power supply S201 of the module and read the ammeter Ammeter Figure 12 Measured with Ammeter fo...

Page 26: ...when the power consumption in the ALP mode is stable For more information see document 3 protocol specification 6 3 V_BCKP Power Consumption Measurement Before measuring the V_BCKP power consumption...

Page 27: ...207 as shown below Ammeter Figure 15 Measured with Ammeter for LC76G PB Step 2 Switch on the power supply and read the ammeter Detailed steps for measuring V_BCKP power consumption with power consumpt...

Page 28: ...arrow silkscreen of J207 and the negative pole is connected to GND Power Consumption Meter GND V_BCKP Figure 17 Measured with Power Consumption Meter for LC76G PB Step 2 Switch on the power supply S2...

Page 29: ...UART Bridge Chip CP2102N There are an antenna interface and a control button on EVB All functions of the module are available including debugging Module USB to UART Bridge Chip CP2102N Type B Interfac...

Page 30: ...supply indication LED on the EVB is illuminated Verify that the jumper cap s is are connected correctly as shown in Figure 1 EVB and Components Ensure that the module s power supply is normal 3 Modul...

Page 31: ...e 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 r...

Page 32: ...tion Satellite System C N0 Carrier to Noise Ratio CEP Circular Error Probable COM Port Communication Port DC Direct Current DI Digital Input DO Digital Output ECEF Earth Centered Earth Fixed EPH Ellip...

Page 33: ...Integrated Circuit I O Input Output NAVIC Indian Regional Navigation Satellite System LED Light Emitting Diode LLA Longitude Latitude and Altitude MSL Mean Sea Level NMEA NMEA National Marine Electro...

Page 34: ...SBAS Satellite Based Augmentation System SDA I2C Serial Data SPS Standard Positioning Service TTFF Time to First Fix TXD Transmit Data Pin UART Universal Asynchronous Receiver Transmitter USB Univers...

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