GNS 3301 StarterKit
The GNS 3301 Starter Kit has been designed to support developers during
design-
in of the GNS 3301 GPS/GLONASS stand alone module solution.
The examples are shown as block diagrams to explain the approaches. Reference Layouts are included
whenever needed at the GNS forum Link:
GNS 3301 StarterKit
confidential
The GNS 3301 Starter Kit has been designed to support developers during
in of the GNS 3301 GPS/GLONASS stand alone module solution.
The examples are shown as block diagrams to explain the approaches. Reference Layouts are included
whenever needed at the GNS forum Link:
www.forum.gns-
gmbh.com
GNS Global Navigation Systems GmbH
Adenauerstrasse 18
D – 52146 Würselen
Germany
www.gns-gmbh.com
info@gns-gmbh.com
manual
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information
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The GNS 3301 Starter Kit has been designed to support developers during
in of the GNS 3301 GPS/GLONASS stand alone module solution.
The examples are shown as block diagrams to explain the approaches. Reference Layouts are included
gmbh.com
.
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Introduction
This manual shows, how to connect the GNS 3301 Starter Kit to a PC in order to verify GNS 3301
module performance and test supported features. Connected to a PC, all GPS/GLONASS data
(NMEA) is routed to the miniUSB port. The specific documents and reference layout in Gerber-file
format of the GNS 3301 StarterKit are available for download.
All documents which are highlighted in bold letters, are available for download at the GNS forum:
http://www.forum.gns-gmbh.com/
For technical module specification, please refer to the GNS 3301 datasheet.
For application information and GPS antenna layout implementation the “GPS antenna
connection” Design Guide is available.
For receiver configuration programming via NMEA command interface and getting more informations
about the command parameters, please refer to GPS GLONASS NMEAcommandInterface
manual.
GNS 3301 Starter Kit Features
• On board USB2UART bridge for PC connection
• 5V DC input via mini USB
• SMA antenna connector for GPS RF In
• GPS/GLONASS active antenna, DC supply (3.0V)
• LED fix indicator
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Index
Introduction ............................................................................................................................ 2
1 Description of the GNS 3301 StarterKit Hardware ................................................................ 4
2 GNS 3301 StarterKit Board Layout ....................................................................................... 5
3 GNS 3301 StarterKit Board Block Diagram ........................................................................... 7
4 Getting started …. ................................................................................................................ 7
5 GNS 3301 configuration ....................................................................................................... 9
5.1
checksum Calculation ..................................................................................................... 9
6 GNS 3301 StarterKit Hardware ........................................................................................... 10
6.1
Assembly Drawing Top Side .......................................................................................... 10
6.2
GNS 3301 StarterKit Schematic page1/2 ........................................................................ 11
6.3
GNS 3301 StarterKit Schematic page2/2 ........................................................................ 12
6.4
PCB Layout TOP/BOTTOM Layer ..................................................................................... 13
7 ORDERING INFORMATION ................................................................................................. 13
8 ENVIRONMENTAL INFORMATION ....................................................................................... 13
9 RELATED DOCUMENTS ........................................................................................................ 14
10 DOCUMENT REVISION HISTORY ....................................................................................... 14
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1 Description of the GNS 3301 StarterKit Hardware
FEATURES
• Small evaluation board designed for verification of GNS 3301 module GPS performance
parameters
• Small evaluation board designed for easy implementation to MCU controlled applications
• DC supply via SMA connector
• GPS/GLONASS-fix LED indicator
• PC connection via USB
• USB powered
The GNS 3301 Starter Kit is equipped to provide NMEA GPS data via USB or UART to the application
software.
Package Content
• GNS 3301 Starter Kit
• USB to miniUSB cable
• Active GPS/GLONASS antenna (3V DC)
• CD with documentation & software
Mini USB Data
+5V DC
Power supply
GPS RF IN
+3.0V DC
LED status
indicator
GNS 3301 StarterKit
2 GNS 3301 StarterKit
Description of LED status indicator:
LED status indicator
blinking
off
RF In
SMA Antenna
connector
3V DC
GNS 3301
GPS/GLONASS
module
RX/TX UART
Con1, pin 7&8
pin 9&10
PPS output
(pin2)
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Board Layout
Description of LED status indicator:
Comment
GPS/GLONASS engine is in acquisition mode. Almanac
data will be received. User position will be
calculated.
User position is calculated (position fix)
Fix indicator
LED
Con1, pin 7&8
RESET
Button
Backup
battery
JP11
Power supply
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GPS/GLONASS engine is in acquisition mode. Almanac
- and Ephemeris-
calculated.
mini USB
connector
Serial to USB
chip
DC Power
Supply
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J
UMPER AND
C
ONNECTOR
D
ESCRIPTION
C
ONNECTOR
P
IN
S
IGNAL
D
ESCRIPTION
JP11
1&2
VBat
This jumper must be connected to DC supply
GNS 3301.
JP12 1&2
GND
Resets UART2USB bridge
C
ON
1
1
GND
Ground
2
1PPS
1PPS Time Mark Output
3&5
NC
Not connected
4
RXDB
Serial Data Input for DGPS RTCM data streaming
This pin receives DGPS data of RTCM protocol (TTL level), if not used
keep floating.
6
TXDB
Serial Data Output
This is the UART-B transmitter of the module. It is used for
customization by firmware. If not used, keep floating.
7
GPS_TX
UART2USB bridge transmitter
Connect pin 7&8 to route TDXA to UART2USB bridge
8
TXDA
Serial Data Output A for NMEA output (TTL)
This is the UART-A transmitter of the module. It outputs GPS
information for application.
9
GPS_RX
UART2USB bridge receiver
Connect pin 9&10 to route RDXA to UART2USB bridge
10
RXDA
Serial Data Input A for Firmware update (TTL)
This is the UART-A receiver of the module. It is used to receive
commands from system.
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3 GNS 3301 StarterKit Board Block Diagram
4 Getting started ….
1. Connect the active GPS/GLONASS antenna to the GNS 3301 Starter Kit.
2. Insert the included CD into your CD Rom Drive. Change to \Driver folder.
3. Copy the two files from the \Driver folder to a PC folder of your choice.
4. GNS 3301 Starter Kit will be connected to the PC via a virtual COM-Port with USB.
This conversion is performed by an onboard chip.
Do not connect the USB cable now!
First, please install the FTDI VCP (Virtual Com Port) driver by invoking USB-Driver-
CDM20600.exe.
A DOS window will open and close again after a few seconds when finished.
5. The VCP USB driver is now ready to use.
6. Connect the Starter Kit to your PC by using the USB- to miniUSB cable. This will power up
the Starter Kit (shown by the blinking green LED fix indicator) and establish the active state.
7. You should see a hint on the right lower corner of your PC screen, that a new hardware has
been found and is ready to use.
GNS 3301 module
miniUSB connector
Serial to USB
external RF
SMA connector
Multi-pin
connector
CON1
LDO
5V 3.3V
connectors RF1,
LDO
5V 3.0V
connectors RF1,
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8. The USB connection will create a new virtual COM Port on your system. To locate this COM
port number (to find out which COM port has been assigned automatically), please open the
device manager:
a. Press the start button
b. Type “device manager” or the appropriate name in your language (for example in
Deutsch : “Geräte-Manager”). Windows will provide a direct link to open the device
manager
c. Alternatively, you find the device manager by pressing the “Windows”-key together
with “pause”. This opens the system overview:
d. On the left side selection menu, please select device manager. (german: “Geräte-
Manager”)The list of Assign the virtual COM-Port number by executing “Windows Start
Button” and select “Control panel”.
9. Open the section ports (“Anschlüsse”).
The new COM port is listed as an USB Serial Port.
Remember the displayed COM port number.
10. Use a GPS viewer of your choice to visualize the received NMEA data. We recommend to use
VisualGPSView freeware for quick testing. Setting should be made as follows:
- UART Comport number : as indicated above in the device manager
- UART baud rate : 9600
- UART format (should be already default ) 8N1, no handshake
For deeper testing, a special tool from mediatek is available under NDA.
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5 GNS 3301 configuration
In all cases, where a UART or USB connection to a PC is available, the GNS 3301 offers a comfortable
way to reprogram the firmware options or settings using the bidirectional NMEA command interface.
Note:
Removing the power of the GPS device will effect that any modified setting will be lost
and reset to factory default settings. If the module has backup power supply through
VBACKUP or coin battery, it will be able to keep the modified setting until the backup
power is exhausted.
After selecting the preferred settings or features at the NMEA_Interface_manual_MTK_Vx
document, first the checksum has to be calculated for this command, refer to chapter 5.1 Checksum
Calculation. To execute the $PMTK commands, use a terminal program of your choice (for example
HyperTerminal, HTerm, TerraTerm,… available as part of your WindowsOS or as freeware).
Use the COMport setting as explained under 3.1.
Use the PMTK-Commands attaching the calculated checksum (see 5.1) and the Carriage Return
sequence at the end of each command line. Most terminal programs offer the option to attach Carriage-
Return (use option add CR-LF or similar).
5.1 checksum Calculation
To execute the a $PMTK command it is required to terminate the command by *<chksum>and a
<CR><LF>. The checksum calculation is simple, just XOR all the bytes between the $ and the * (not
including the delimiters themselves). Then use the hexadecimal ASCII format.
Or use the checksum tool at the \Software\Checksum tool folder, which is available on Starter Kit CD or
at the GNS forum: www.forum.gns-gmbh.com.
Example: $PMTK226,3,30*4<CR><LF>
GNS 3301 StarterKit
6 GNS 3301
StarterKit Hardware
6.1
Assembly Drawing Top Side
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Assembly Drawing Top Side
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GNS 3301 StarterKit
6.2 GNS 3301 StarterKit S
chematic
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GNS 3301 StarterKit
6.3 GNS 3301 StarterKit S
chematic
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6.4 PCB Layout TOP/BOTTOM Layer
TOP Layer BOTTOM Layer
7 ORDERING INFORMATION
O
rdering information
Type Part# Description
GNS 3301_StarterKit 4037735105195
GNS 3301 Evaluation Board
8 ENVIRONMENTAL INFORMATION
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This product is free of environmental hazardous substances and complies to
2002/95/EC. (RoHS directive).
9 RELATED DOCUMENTS
Type description Available from
GNS 3301 data sheet Data sheet for GNS 3301 module
http://www.forum.gns-gmbh.com
GPS Antenna Connection
Design Guide
Design Guide to implement an GPS
antenna to an application PCB
http://www.forum.gns-gmbh.com
NMEA_Interface_manual_MTK_
Vx
Detailed description of NMEA protocol &
commands
http://www.forum.gns-gmbh.com
10 DOCUMENT REVISION HISTORY
V1.0 03/17/2014 M.Reiff initial document
V1.1 10/16/2014 Skaliks General review
V1.2 6/12/2015 O. Diegel Corrected part#
GNS GMBH
2014,2015
THE INFORMATION IN THIS DOCUMENTATION DOES NOT FORM ANY QUOTATION OR CONTRACT
.
TECHNICAL DATA ARE DUE TO BE CHANGED WITHOUT NOTICE
.
TECHNICAL RECOMMENDATIONS ARE JUST
FOR REFERENCE
.
NO LIABILITY WILL BE ACCEPTED BY THE PUBLISHER FOR ANY CONSEQUENCE OF THIS DOCUMENT
'
S USE
.
REPRODUCTION IN WHOLE OR IN PART IS PROHIBITED WITHOUT THE PRIOR WRITTEN CONSENT OF THE COPYRIGHT OWNER
