Lantronix PNT-SG3FS-EVAL User manual

PNT-SG3FS Evaluation Kit
User Guide
Part Number PMD-00162
Revision A July 2023

PNT-SG3FS Evaluation Kit User Guide 2
0BIntellectual Property
© 2023 Lantronix, Inc. All rights reserved. No part of the contents of this publication may be
transmitted or reproduced in any form or by any means without the written permission of
Lantronix.
Lantronix is a registered trademark of Lantronix, Inc. in the United States and other countries.
Patented: https://www.lantronix.com/legal/patents/. Additional patents pending.
1BWarranty
For details on the Lantronix warranty policy, please go to our web site at
https://www.lantronix.com/support/warranty/.
2BContacts
Lantronix, Inc.
48 Discovery, Suite 250
Irvine, CA 92618, USA
Toll Free: 800-526-8766
Phone: [phone]
Fax: [phone]
Technical Support
Online: https://www.lantronix.com/technical-support/
Sales Offices
For a current list of our domestic and international sales offices, go to the Lantronix web site at
https://www.lantronix.com/about-us/contact/.
3BDisclaimer
All information contained herein is provided “AS IS”.Lantronix undertakes no obligation to
update the information in this publication. Lantronix does not make, and specifically disclaims,
all warranties of any kind (express, implied, or otherwise) regarding title, non-infringement,
fitness, quality, accuracy, completeness, usefulness, suitability, or performance of the
information provided herein. Lantronix shall have no liability whatsoever to any user for any
damages, losses and causes of action (whether in contract or in tort or otherwise) in
connection with the user’s access or usage of any of the information or content contained
herein. The information and specifications contained in this document are subject to change
without notice.

PNT-SG3FS Evaluation Kit User Guide 3
4BRevision History
Date
Rev.
Comments
5B
July 2023
6B
A
7B
Initial release.
For the latest revision of this product document, please check our online documentation at
https://www.lantronix.com/support/documentation/.

PNT-SG3FS Evaluation Kit User Guide 4
Table of Contents
1. Introduction 7
2. Features 8
3. PNT-SG3FS-EVAL Evaluation Kit Contents 9
4. Interfaces 10
Power Input _____________________________________________________________ 10
Power (On/Off) Button _____________________________________________________ 10
Reset __________________________________________________________________ 11
LED Indicators ___________________________________________________________ 11
UART Interface___________________________________________________________ 12
GNSS Input Antenna ______________________________________________________ 12
I2C and Power Connector Interface ___________________________________________ 13
5. Current Measurement Process 14
6. Teseo-Suite Connection 15
Getting Started with Teseo-Suite _____________________________________________ 15
Add/Delete Device ________________________________________________________ 15
Connect or Disconnect Control Port ___________________________________________ 17
7. Board General View 19
Internal Top View and Jumper Configuration ____________________________________ 19
Block Diagram Overview ___________________________________________________ 19
8. Reference Documents 20

PNT-SG3FS Evaluation Kit User Guide 5
List of Figures
Figure 1. Power Input _________________________________________________________ 10
Figure 2. Power (On/Off) Button _________________________________________________ 10
Figure 3. Reset Button ________________________________________________________ 11
Figure 4. Power LED Indicator __________________________________________________ 11
Figure 5. PPS LED Indicator____________________________________________________ 11
Figure 6. USB/UART Connector _________________________________________________ 12
Figure 8. GNSS SMA Connector ________________________________________________ 12
Figure 9. I2C and Power Measurement Connector___________________________________ 13
Figure 10. Current Measurement Connector Pins ___________________________________ 14
Figure 11. Configuration Session Panel ___________________________________________ 15
Figure 12. Edit Session Configuration Button _______________________________________ 15
Figure 13. Configuration Device panel ____________________________________________ 16
Figure 14. Configuration Session Panel with One Device Added________________________ 17
Figure 15. Port Connections Active ______________________________________________ 17
Figure 16. View NMEA Output Button ____________________________________________ 18
Figure 17. NMEA Output Panel _________________________________________________ 18
Figure 18. Internal Board View __________________________________________________ 19
Figure 19. Block Diagram ______________________________________________________ 19

PNT-SG3FS Evaluation Kit User Guide 6
List of Tables
Table 1. UART Configuration ___________________________________________________ 12
Table 2. Connector Pin Description ______________________________________________ 13

1. Introduction
PNT-SG3FS Evaluation Kit User Guide 7
1. Introduction
The PNT-SG3FS-EVAL evaluation kit is a complete standalone evaluation platform for the PNT-
SG3FS GNSS module.
The PNT-SG3FS module is an easy-to-use Global Navigation Satellite System (GNSS)
standalone module, with an integrated Teseo-III receiver working simultaneously on multiple
constellations (GPS/Galileo/Glonass/BeiDou/QZSS).

2. Features
PNT-SG3FS Evaluation Kit User Guide 8
2. Features
The PNT-SG3FS-EVAL has the following features:
♦ USB power supply
♦ Internal backup battery option (battery not provided)
♦ Power and Reset buttons
♦ I2C and current measurement connectors
♦ UART connector via USB
♦ PPS and Power output LEDs

3. PNT-SG3FS-EVAL Evaluation Kit Contents
PNT-SG3FS Evaluation Kit User Guide 9
3. PNT-SG3FS-EVAL Evaluation Kit Contents
The PNT-SG3FS-EVAL evaluation kit consists of the following:
♦ PNT-SG3FS-EVAL evaluation board
♦ GNSS active antenna
♦ USB cable
♦ Quick start guide

4. Interfaces
PNT-SG3FS Evaluation Kit User Guide 10
4. Interfaces
The PNT-SG3FS-EVAL offers a variety of user interfaces:
♦ Power (On/Off) button
♦ Reset button
♦ UART interface via micro-USB
♦ 5V power input (supplied via USB)
♦ GNSS antenna input
♦ LED indicators
16BPower Input
Power is supplied to the PNT-SG3FS-EVAL via the micro-USB connector highlighted in Figure 1
below.
Figure 1. Power Input
17BPower (On/Off) Button
The power button is highlighted in Figure 2 below.
Figure 2. Power (On/Off) Button
When the power button is depressed (down), the board is switched ON and the power LED (see
LED Indicators) is lit.
When the power button is raised (up), VBAT is connected to GND, the board is switched OFF,
and the power LED is unlit.

4. Interfaces
PNT-SG3FS Evaluation Kit User Guide 11
18BReset
The reset button is highlighted in Figure 3 below. Press the reset button to reset the PNT-SG3FS
module.
Figure 3. Reset Button
19BLED Indicators
The PNT-SG3FS-EVAL offers two LED indicators as shown below.
♦ The red power LED indicator (highlighted in Figure 4 below) shows whether the unit is
On (LED is lit) or Off (LED is unlit).
Figure 4. Power LED Indicator
♦ The green PPS LED indicator (highlighted in Figure 5 below) blinks once per second
when the PNT-SG3FS is up and running.
Figure 5. PPS LED Indicator

4. Interfaces
PNT-SG3FS Evaluation Kit User Guide 12
20BUART Interface
The UART interface (highlighted in Figure 6 below) is provided via the micro-USB connector.
Figure 6. USB/UART Connector
The UART interface is used to trace NMEA messages and to upload binary files.
Before using Silicon Labs’ CP2104 UART-USB bridge chip located inside the PNT-SG3FS-EVAL
unit, install the Virtual COM Port (VCP) driver. The driver can be downloaded from the Silicon
Labs (Silabs) web page:
https://www.silabs.com/documents/public/software/CP210x_Universal_Windows_Driver.zip
The VCP device drivers allow the CP2104 device on the PNT-SG3FS-EVAL to appear to the
PC's application software as a standard COM port. Application software running on the PC
accesses the CP2104 device as it would a standard hardware COM port configured as shown in
Table 1. Data transfer between the PC and the CP2104 device is performed over the USB
interface.
Table 1. UART Configuration
Baud Rate Data Bits Stop Bits Parity Handshake
9600 Baud
8 Bits
1 Bit
none
none
21BGNSS Input Antenna
GNSS input is available through an SMA female connector, highlighted in Figure 8 below.
Figure 7. GNSS SMA Connector
A passive or active antenna can be used on the PNT-SG3FS-EVAL.
The DC power supply for active antenna is 3V3 with current limitation in case of a short circuit.

4. Interfaces
PNT-SG3FS Evaluation Kit User Guide 13
Note: Please use a DC blocker for passive antenna or connection of a GNSS simulator to the
PNT-SG3FS-EVAL unit.
22BI2C and Power Connector Interface
The 10-pin CN302 connector highlighted in Figure 9 below provides I2C bus signal and pins to
measure power consumption.
Figure 8. I2C and Power Measurement Connector
Table 2. Connector Pin Description
Pin Connector Signal Description
1
VCC_IO
3V3 power supply
2
GND
Ground connection
3
Module.Pin#5
4
Module.Pin#18
5
I2C_CLK
I2C clock signal
6
I2C_SD
I2C SDA signal
7
VBAT
VBackup power supply
8
PM_VBAT
VBackup measure point
9
VCC
VCC power supply
10
PM_VCC
VCC measure point
The VCC_IO (pin #1), GND (#2), I2C_CLK (#5), and I2C_SD (#6) pins allow connection of an
external I2C-Master-device to the PNT-SG3FS.
The PNT-SG3FS always acts as slave on I2C-bus.

5. Current Measurement Process
PNT-SG3FS Evaluation Kit User Guide 14
5. Current Measurement Process
The current measurement pins identified in Table 2 of the previous section are highlighted in
Figure 10 below.
Figure 9. Current Measurement Connector Pins
To measure the current consumption of the PNT-SG3FS in different operating modes:
1. Connect a true-RMS voltmeter to:
♦ VCC (pin #9) and PM_VCC (pin #10)
♦ VBAT (pin #7) and PM_VBAT (pin #8)
2. Wait 15 minutes to download all GNSS orbital data.
3. Read the voltage (and average if necessary); the current value is determined with the
following conversions:
♦ VCC: 1 mV equals 1 mA
♦ VBAT: 100 mV equals 1 mA
Note: Perform the test with good signals and a clear sky view to ensure that the receiver can
acquire the satellite signals.
Pin #7: VBAT
Pin #9: VCC
Pin #8: PM_VBAT
Pin #10
: PM_VCC

6. Teseo-Suite Connection
PNT-SG3FS Evaluation Kit User Guide 15
6. Teseo-Suite Connection
Install and start Teseo-Suite (https://www.st.com/en/embedded-software/teseo-suite.html), and
follow the directions in the following sections.
23BGetting Started with Teseo-Suite
When the Teseo-Suite application starts, Teseo-Suite opens the Configuration Session panel as
shown in Figure 11 below.
Enter a session name to enable the “Add Device” button.
Figure 10. Configuration Session Panel
If the Configuration Session panel does not appear, either open the File menu and select "New
Session" or click the “Edit Session Configuration” button shown in Figure 12.
Figure 11. Edit Session Configuration Button
24BAdd/Delete Device
In the Configuration Session panel, you can add/delete PNT-SG3FS-EVAL devices in the work
session and monitor existing devices.
Click the "Add Device" button to bring up the Configuration Device form shown in Figure 14.
Configure the following fields as described:
Hardware type: STA8090
Control Port Protocol: NMEA
The following Control Port fields should use the same parameters of the serial connection
as defined in Table 1: Baud Rate – 9600; Data Bits – 8; Parity – None; Stop Bits – One
Click Ok to add the device.

6. Teseo-Suite Connection
PNT-SG3FS Evaluation Kit User Guide 16
Figure 12. Configuration Device panel
Note: When selecting the Port Name, Teseo-Suite lists all COM ports available, even if these
COM ports are already in use by another application.
The GNSS Device Name and Protocol cannot be changed once the device has been
added.

6. Teseo-Suite Connection
PNT-SG3FS Evaluation Kit User Guide 17
Figure 13. Configuration Session Panel with One Device Added
To delete a device from the session, click the corresponding button in the Delete Device column.
The Delete All button removes all devices from the current session.
25BConnect or Disconnect Control Port
After the Control Port has been defined, its corresponding checkbox is enabled. Clicking the
checkbox in the Connect Ctrl Port column allows or disallows the port to be connected via the
Connect button.
Click the Connect (electrical plug) button to open the selected ports; the appearance of the button
changes to show that you can disconnect the device as shown in Figure 15 below.
Figure 14. Port Connections Active

6. Teseo-Suite Connection
PNT-SG3FS Evaluation Kit User Guide 18
Open the NMEA output window to confirm proper NMEA output using the button shown in Figure
16.
Figure 15. View NMEA Output Button
The NMEA output panel displays the NMEA stream coming from the PNT-SG3FS-EVAL as
shown in Figure 17 below.
Figure 16. NMEA Output Panel

7. Board General View
PNT-SG3FS Evaluation Kit User Guide 19
7. Board General View
Internal Top View and Jumper Configuration
Figure 17. Internal Board View
Block Diagram Overview
Figure 18. Block Diagram

8. Reference Documents
PNT-SG3FS Evaluation Kit User Guide 20
8. Reference Documents
♦ Additional documentation for the PNT-SG3FS GNSS module can be found at
https://www.lantronix.com/support/documentation/.
♦ Teseo-Suite data brief: http://www.st.com/resource/en/data_brief/teseo-suite.pdf
(DB3224, DocID030398)