Quectel GNSS Module Series User manual

L26-T EVB User Guide
GNSS Module Series
Rev. L26-T_EVB_User_Guide_V1.0
Date: 2019-11-21
Status: Released
www.quectel.com

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Copyright © Quectel Wireless Solutions Co., Ltd. 2019. All rights reserved.

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About the document
History
Revision Date Author Description
1.0 2019-11-21 Brooke WANG Initial

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Contents
About the document ...................................................................................................................................2
Contents .......................................................................................................................................................3
Table Index................................................................................................................................................... 4
Figure Index .................................................................................................................................................5
1Introduction ..........................................................................................................................................6
1.1. Safety Information.......................................................................................................................6
2General Overview.................................................................................................................................7
2.1. Top view of L26-T EVB................................................................................................................7
2.2. L26-T EVB & Kit Accessories......................................................................................................8
2.3. EVB and Accessories Assembly .................................................................................................9
3Interface Applications .......................................................................................................................10
3.1. Micro-USB Interface..................................................................................................................10
3.2. Antenna Interface...................................................................................................................... 10
3.3. Switches and Buttons ............................................................................................................... 11
3.4. Operation Status Indication LEDs.............................................................................................12
3.5. Test Points.................................................................................................................................12
4EVB Operation Procedures...............................................................................................................14
4.1. Communication via Micro-USB Interface..................................................................................14
4.2. Firmware Download ..................................................................................................................15
4.2.1. Firmware Download in Normal Working Mode .............................................................. 15
4.2.2. Firmware Download in Boot Download Mode ............................................................... 16
5Usage of Teseo-Suite Pro .................................................................................................................17
5.1. View the GNSS Receiver Status...............................................................................................17
5.1.1. COM Port and Baud Rate Setting.................................................................................. 17
5.1.2. Explanations of Views and Windows .............................................................................19
5.2. Send PSTM Commands ...........................................................................................................20
6Appendix A Reference.......................................................................................................................21

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Table Index
TABLE 1: INTERFACES OF L26-T EVB ............................................................................................................. 7
TABLE 2: LIST OF ACCESSORIES .................................................................................................................... 9
TABLE 3: SWITCHES AND BUTTONS..............................................................................................................11
TABLE 4: OPERATION STATUS INDICATION LEDS....................................................................................... 12
TABLE 5: PIN DESCRIPTION........................................................................................................................... 13
TABLE 6: RELATED DOCUMENTS .................................................................................................................. 21
TABLE 7: TERMS AND ABBREVIATIONS........................................................................................................ 21

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Figure Index
FIGURE 1: TOP VIEW OF L26-T EVB ................................................................................................................ 7
FIGURE 2: L26-T EVB & KIT ACCESSORIES.................................................................................................... 8
FIGURE 3: L26-T EVB AND ACCESSORIES ASSEMBLY ................................................................................. 9
FIGURE 4: MICRO-USB CONNECTOR ........................................................................................................... 10
FIGURE 5: ANTENNA CONNECTOR ............................................................................................................... 10
FIGURE 6: SWITCHES AND BUTTONS ...........................................................................................................11
FIGURE 7: OPERATION STATUS INDICATION LEDS .................................................................................... 12
FIGURE 8: TEST POINTS - J104...................................................................................................................... 12
FIGURE 9: USB PORTS ................................................................................................................................... 14
FIGURE 10: COM PORT SETTING OF QCOM................................................................................................ 14
FIGURE 11: STA808X/9X FIRMWARE UPGRADE TOOL CONFIGURATIONS .............................................. 15
FIGURE 12: TESEOIII XLOADER TOOL CONFIGURATIONS FOR FIRMWARE UPGRADE ........................ 16
FIGURE 13: TESEO-SUITE PRO TOOL INTERFACE ..................................................................................... 17
FIGURE 14: MANUAL CONFIGURATION THE COM PORT ........................................................................... 18
FIGURE 15: SIGNAL LEVEL............................................................................................................................. 19
FIGURE 16: SKY VIEW..................................................................................................................................... 19
FIGURE 17: MODULE POSITIONING FORM .................................................................................................. 20
FIGURE 18: COMMAND SENDING VIA TESEO-SUITE PRO ......................................................................... 20

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1Introduction
This user guide describes detailed information about the usage of Quectel L26-T EVB (Evaluation
Board), the auxiliary for engineers to develop and test Quectel L26-T module.
1.1. Safety Information
The following safety precautions must be observed during all phases of operation, such as usage, service
or repair of any terminal incorporating Quectel L26-T module. Manufacturers of the terminal should notify
users and operating personnel of the following safety information by incorporating these guidelines into all
manuals supplied with the product. If not so, Quectel assumes no liability for any failure to comply with
these precautions.
Be assure the use of the product conforms to the national safety and
environmental regulations, and is allowed in the country and in the environment
required.
Keep away from explosive and flammable materials. The use of electronic
products in extreme power supply conditions and locations with potentially
explosive atmospheres may cause fire and explosion hazards.
The product has to be powered by a stabilized voltage source, and the wiring
shall conform to security and fire prevention regulations.
Proper ESD handling procedures must be applied throughout the mounting,
handling and operation of any application that incorporates the module to avoid
ESD damages.

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2General Overview
2.1. Top view of L26-T EVB
The following figure illustrates the top view of L26-T EVB.
A
B
C
D
E
F
G
H
Figure 1: Top View of L26-T EVB
Table 1: Interfaces of L26-T EVB
SN. Designator Description
A D102 Indication LEDs

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2.2. L26-T EVB & Kit Accessories
USB Cable
Bolts and
Coupling Nuts
GNSS
Antenna
EVB
USB Flash Drive
Figure 2: L26-T EVB & Kit Accessories
B J303 Micro-USB connector
C S201 Power switch
D S102 Boot button
E S101 Reset button
F J103 Antenna connector
G U102 L26-T module
H J104 Tes t points

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Table 2: List of Accessories
2.3. EVB and Accessories Assembly
The following figure shows the assembly of L26-T EVB and its accessories.
Figure 3: L26-T EVB and Accessories Assembly
Items Description Quantity
USB Cable USB cable 1
EVB Evaluation board 1
Antenna GNSS antenna (active) 1
USB Flash Drive USB flash drive (including L26-T related documents,
tools, drivers, etc.) 1
Instruction Sheet A sheet of paper giving instructions for EVB
connection, details of EVB accessories, etc. 1
Others Bolts and coupling nuts 4 pairs

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3Interface Applications
3.1. Micro-USB Interface
Micro-USB connector is used for EVB power supply as well as data transmission.
Micro-USB
connector
Figure 4: Micro-USB Connector
3.2. Antenna Interface
The antenna connector is used to connect an external passive or active GNSS antenna.
Antenna
connector
Figure 5: Antenna Connector

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3.3. Switches and Buttons
The following figure illustrates the switches and buttons of the EVB.
S101
S102
S201
Figure 6: Switches and Buttons
Table 3: Switches and Buttons
Part No. Name I/O Description
S101 RESET DI The module will be reset through pressing and then
releasing the button.
S102 BOOT DI Please refer to Chapter 4.2.2 for details.
S201 POWER PI Power switch

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3.4. Operation Status Indication LEDs
L1
L2
Figure 7: Operation Status Indication LEDs
Table 4: Operation Status Indication LEDs
3.5. Test Points
The following figure illustrates the test points of the EVB.
1 2
3 4
5 6
7 8
9 10
Figure 8: Test Points - J104
Part Name I/O Description
L1 1PPS DO Flash: 1PPS signal indicator. The frequency is 1Hz (configurable).
L2 PWR DO Power indicator

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Table 5: Pin Description
Pin No. Signal I/O Description
1 WI / /
2 UART_RX DI Receive data
3 TIMEPULSE DO One pulse per second
4 UART_TX DO Transmit data
5 PIN5 PI Reserved
6 ANT1 AI Antenna detection 1
7 BOOT DI Force the module to enter boot download
8 ANT2 AI Antenna detection 2
9 3.3V PO 3.3V output
10 GND / Ground

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4EVB Operation Procedures
This chapter mainly illustrates the operation procedures of L26-T EVB.
4.1. Communication via Micro-USB Interface
Step 1: Connect the EVB and the PC with a Micro-USB cable through Micro-USB interface, and then
switch POWER to ON state to power on the EVB.
Step 2: Run the USB flash drive on PC to install the USB driver. The USB port numbers can be viewed
in Device Manager of the PC after the USB driver is installed, as shown below.
Figure 9: USB Ports
Step 3: Install and then use the tool QCOM provided by Quectel to realize the communication between
L26-T module and the PC.
The following figure shows the COM Port Setting of QCOM: select the correct “COM Port” (USB
Port shown in the above figure) and set the correct “Baudrate” (the default value: 9600bps). For
more details about the usage of QCOM, please refer to document [4].
Figure 10: COM Port Setting of QCOM

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4.2. Firmware Download
L26-T module supports the firmware download in both normal working mode and boot download mode,
respectively using the tools STA808x/9x Firmware Upgrade and TeseoIII XLoader.
4.2.1. Firmware Download in Normal Working Mode
Firmware upgrade in normal working mode should be performed as the following steps:
Step 1: Connect the EVB to a PC through the USB cable.
Step 2: Switch POWER to ON state to power on the EVB.
Step 3: Run the tool STA808x/9x Firmware Upgrade and configure the tool as shown below.
Figure 11: STA808x/9x Firmware Upgrade Tool Configurations
Step 4: Click button and then reset the module to upgrade the firmware.

Please make sure the module is in full on mode before downloading firmware by this method.
NOTE

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4.2.2. Firmware Download in Boot Download Mode
Firmware download in boot download mode should be performed as the following steps:
Step 1: Connect the EVB to a PC through the USB cable.
Step 2: Press and hold the BOOT button, and switch POWER to ON state to power on the EVB. Once
the high voltage level of BOOT pin has been detected during power-up, the module will enter into
boot download mode.
Step 3: Release BOOT button to make BOOT pin of L26-T return to normal floating.
Step 4: Run the tool TeseoIII XLoader and configure the tool as shown below.
Figure 12: TeseoIII XLoader Tool Configurations for Firmware Upgrade
Step 5: Click button to upgrade the firmware.

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5Usage of Teseo-Suite Pro
After the EVB accessories are assembled, please turn on the module and start the tool Teseo-Suite Pro.
The tool helps users to view the status of GNSS receiver. The following chapter only briefly describes the
use of Teseo-Suite Pro, for more details about the tool, please click “Help” and select “User Manual” in
the tool.
5.1. View the GNSS Receiver Status
5.1.1. COM Port and Baud Rate Setting
After the tool is opened, the following interface will be shown:
Figure 13: Teseo-Suite Pro Tool Interface

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UART port can be automatically identified by Teseo-Suite Pro when it is opened. If not, the steps from “a”
to “d” illustrated in the following figure should be performed.
Please click the corresponding buttons. After button is clicked, the “Rover Configuration”
box will be popped up, then please check the “Add Control Port” box.
a
bc
d
Figure 14: Manual Configuration the COM Port

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5.1.2. Explanations of Views and Windows
The following interface will be shown by clicking button. The digit shown above each flag is the CN
value. Below are displayed information such as the PRN, the frequency band used by the satellite
(“BAND”), the azimuth (“AZI”) and the elevation of the satellite (“ELE”). The clear flag indicates that the
navigation data of this satellite is in use, while the faded flag indicates not used.
Figure 15: Signal Level
By clicking button, "Sky View" will be opened, which shows the current azimuth and elevation of
satellites used for the fix.
Figure 16: Sky View