PDF - Maritex
GlobalTop Technology Inc.
EV-Kit User Manual
(MT3333 series)
User Manual
Revision: A03
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without prior
permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
th
No.16 Nan-ke 9 Rd, Science-Based Industrial Park, Tainan, 741, Taiwan, R.O.C.
Tel: +886-6-5051268 / Fax: +886-6-5053381 / Email: [email protected] / Web: www.gtop-tech.com
GlobalTop Technology
EV-Kit User Manual (MT3333 series)
Document #
Ver. A03
Version History
Title:
Subtitle:
Doc Type:
Revision
A00
A01
A02
A03
EV-Kit User Manual(MT3333 series)
GNSS Module
Datasheet
Date
Author
Description
2013-03-19
Allen
Preliminary
Add Gms-g6、Gms-b6
2013-09-02
Dylan
2014-01-13
Delano
Modify web-side link for software tool of
GPS viewer
2015-07-10
Jenhsiang
Adding Gmm-3301
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
2
GlobalTop Technology
EV-Kit User Manual (MT3333 series)
Document #
Ver. A03
3
Table of Contents
Version History .......................................................................................................................... 2
Table of Contents ....................................................................................................................... 3
Caution ..................................................................................................................................... 4
Packing Contents ....................................................................................................................... 5
1. Introduction .......................................................................................................................... 6
2. Board Description .................................................................................................................. 8
2.1 Hardware overview:...................................................................................................... 8
3. Operating Instruction ............................................................................................................13
3.1 Function Testing ......................................................................................................... 13
3.2 Application for the various RF reception ............................................................. 14
4. Software Usage .....................................................................................................................15
4.1 System requirement ................................................................................................... 15
4.2 USB Driver and GPS viewer ........................................................................................ 15
From Silicon Labs Web-side (CP210x USB to UART Bridge VCP Drivers).......................... 15
4.3 Installing USB Driver and Microsoft Framework........................................................ 16
5. RTCM Usage..........................................................................................................................20
5.1 RTCM hardware setting ............................................................................................. 20
5.2 RTCM software setting................................................................................................ 21
6. Trouble-shooting ..................................................................................................................23
6.1 Problems with Setup................................................................................................... 23
6.2 About Poor GNSS Signal ............................................................................................. 24
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
GlobalTop Technology
EV-Kit User Manual (MT3333 series)
Document #
Ver. A03
Caution

Global navigation satellite system (GNSS) includes GPS+GLONASS and BeiDou GPS+
Beidou-2(COMPASS).
GPS was established by the US Ministry of National Defense.
GLONASS was established by Russian Aerospace Defense Forces and is used in
Russia.
Beidou-2 system, also known as “Compass”, has been commercially operational
since the end of 2012. It is currently a constellation of 16 satellites ultimately 35
providing worldwide positioning, navigation and timing services to the Asia-Pacific
region.
Each country is responsible for the preciseness and maintenance of the system. Any
changes they have implemented to the system in the future may enhance or
deteriorate the effectiveness and performance of the received GNSS data.

GNSS signal may be cut off or become seriously weakened if you operate EV-kit inside
any infrastructures such as buildings, tunnels, or nearby any huge objects and/or
obstruction. That signal being cut off does not does not mean the EV-kit is
malfunctioned; it will operate properly again once it receives clear GNSS signals (works
best under open sky).
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
4
GlobalTop Technology
EV-Kit User Manual (MT3333 series)
Document #
Ver. A03
Packing Contents

User Manual / Software Application Program
 CP210X USB Bridge VCP driver
 GPS Viewer tool with user manual
 EV-Kit user manual
Note: These items will be delivered by E-mail. Please contact your dealer for the items
for more information.



USB Cable
EV-Kit with Main Board、GNSS Module Board
External Antenna (module:Gmm-g3, Gmm-3301 )
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
5
GlobalTop Technology
EV-Kit User Manual (MT3333 series)
Document #
Ver. A03
1. Introduction
The main purpose of this EV-Kit is to simplify the evaluation process for GNSS modules and
to help testers operate our products with convenience and ease.
This device can communicate with computer devices via USB cable, and it must be used in
conjunction with the software “GPS Viewer”, for users to record all GNSS module data such
as satellites’ status, time-to-first-fix (TTFF), date and time.
If evaluation of RTCM function is desired, the tester can refer to GPS Viewer and see how to
connect GNSS simulator with the e EV-kit via RS232 (DB-9 Connector).
The EV-Kit has 4 series based on the various modules. Please refer to the list below:
With External Antenna (series 1): Gmm-g3 、Gmm-3301
,
Gmm-g3
Gmm-3301
Built-in Patch Antenna (series 2): Gms-g9
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
6
GlobalTop Technology
EV-Kit User Manual (MT3333 series)
Document #
Ver. A03
Built-in chip antenna (series 3): Gms-g6a
Built-in chip antenna (series 4): Gms-g6 、Gms-b6(Common board)
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
7
GlobalTop Technology
EV-Kit User Manual (MT3333 series)
Document #
Ver. A03
2. Board Description
2.1 Hardware overview:
Please refer to the figures below:
Compatible Models: (Series 1) Gmm-g3
RS232 communication port (J2)
(data transmission for RTCM)
1PPS LED Indicator (D3)
3D-Fix LED Indicator (D2)
SMA Connector
(for External Antenna)
Daughter Board
Power LED Indicator (D1)
USB communication port (USB1) (Power input &data transmission)
Power switches (SW1) Control the GNSS Module ON (Enable) /OFF (Disable)
Main Board
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
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GlobalTop Technology
EV-Kit User Manual (MT3333 series)
Document #
Ver. A03
9
Compatible Models: (Series 1) Gmm-3301
RS232 communication port (J2)
(data transmission for RTCM)
1PPS LED Indicator (D3)
I2C interface pin header
3D-Fix LED Indicator (D2).
SPI interface pin header
Not support this function
INT indicator pin header
Daughter Board
Power LED Indicator (D1)
SMA Connector
(for External Antenna)
USB communication port (USB1) (Power input &data transmission)
Power switches (SW1) Control the GNSS Module ON (Enable) /OFF (Disable)
Main Board
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
GlobalTop Technology
EV-Kit User Manual (MT3333 series)
Document #
Ver. A03
Compatible Model: (Series 2) Gms-g9
RS232 communication port (J2)
(data transmission for RTCM)
1PPS LED Indicator (D3)
3D-Fix LED Indicator (D2)
Daughter Board
Power LED Indicator (D1)
USB communication port (USB1) (Power input &data transmission)
Power switches (SW1) Control the GNSS Module ON (Enable) /OFF (Disable)
Main Board
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
10
GlobalTop Technology
EV-Kit User Manual (MT3333 series)
Document #
Ver. A03
Compatible Model: (series 3) Gms-g6a
RS232 communication port (J2)
(data transmission for RTCM)
1PPS LED Indicator (D3)
3D-Fix LED Indicator (D2)
Daughter Board
Power LED Indicator (D1)
USB communication port (USB1) (Power input &data transmission)
Power switches (SW1) Control the GNSS Module ON (Enable) /OFF (Disable)
Main Board
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
11
GlobalTop Technology
EV-Kit User Manual (MT3333 series)
Document #
Ver. A03
Compatible Model: (series 4)Gms-g6 、Gms-b6(Common board)
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
12
GlobalTop Technology
EV-Kit User Manual (MT3333 series)
Document #
Ver. A03
3. Operating Instruction
3.1 Function Testing
 Preparation for the power and data communication
Compatible Model: All series
Step 1. Connect USB cable to the EV-kit and to the PC:
 The USB cable supplies power for the EV-Kit, and transmits data between EVkit & PC
* Make sure the Power LED Indicator (D1) is lighted on.
Step 2. Toggle the switch (SW1) from right to left for power on GNSS module:
 Toggle the switch to the left for the power supplying on GNSS Module. Please
refer to the figure below.
(1.) Once the Power LED Indicator(D1) is on and switch(SW1) is on, the initial
state will be the following:
3D Fix LED Indicator (D2) blinks (blue light).
1PPS LED Indicator (D3) is off (green light).
(2.) Once the module is in the status of FIX:
3D Fix LED Indicator (D2) is off.
1PPS LED Indicator (D3) blinks.
 The status of 3D fix and 1PPS can be re-defined. Please contact GlobalTop for
this customization service.
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
13
GlobalTop Technology
EV-Kit User Manual (MT3333 series)
Document #
Ver. A03
3.2 Application for the various RF reception
a. Attaching external antenna with GNSS modules on EV-kits:
Compatible Models: (series1) Gmm-g3、Gmm-3301
SMA Connector
(for External Antenna)
b. Patch Antenna Module
Compatible Model: (Series 2) Gms-g9
Connected
External Antenna
c. Chip Antenna module
Compatible Model: (Series 3) Gms-g6a
d. Patch Antenna Module.
Compatible Models: (Series 4)_Gms-g6、Gms-b6(Common board)
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
14
GlobalTop Technology
EV-Kit User Manual (MT3333 series)
Document #
Ver. A03
4. Software Usage
4.1 System requirement
PC:IBM, Pentium or above or compatible PC。
Operation system:Windows 7/XP/2003/Vista
USB driver: CP210xVCPInstaller.zip
GPS viewer: GPS viewer.exe
4.2 USB Driver and GPS viewer
Please check whether you have the correct USB driver before you proceed to the next
step. Without correct driver installed, your EV-Kit will not be functional.

If you have purchased the EV-Kit for use with GPS Module, please make sure
you have the installation file [CP210xVCPInstaller.zip] in the package first.
Once it is confirmed, proceed to the next section: [4.3 Install the USB
Driver].
 EV-kit USB Driver Download
From Silicon Labs Web-side (CP210x USB to UART Bridge VCP Drivers)
http://www.silabs.com/products/mcu/Pages/USBtoUARTBridgeVCPDrivers.aspx
or From Gtop connect to Silicon Labs Web-side
http://www.gtop-tech.com/en/product/GNSS-EVB-Standalone-Module/GPS_Evaluation_Kit_23.html
 GPS viewer.exe Download
For standalone module evaluation kit:
http://www.gtop-tech.com/en/product/GNSS-EVB-Standalone-Module/GPS_Evaluation_Kit_23.html
For antenna module evaluation kit:
http://www.gtop-tech.com/en/product/GNSS-EVB-Patch-Module/GPS_Evaluation_Kit_22.html
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
15
GlobalTop Technology
EV-Kit User Manual (MT3333 series)
Document #
Ver. A03
4.3 Installing USB Driver and Microsoft Framework

Unzip the file [CP210xVCPInstaller.zip] and double click [CP210xVCPInstaller.exe], to
begin the process of driver installation.

Click [Install]

After the installation is complete, you may need to restart your computer. Please
follow the instructions on screen to restart your computer.
After the computer is ready, right click <My Computer>, and select <Manage>
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
16
GlobalTop Technology
EV-Kit User Manual (MT3333 series)

Document #
Ver. A03
Left click <Device Manager>, and select <Ports (COM &LPT)>. Check to see if a
device named <Silicon Labs CP210x USB to UART Bridge (COM#)> is present. If so,
EV-Kit is now setup and ready for use. Please refer to the figure show in below.
#”represents the virtual COM Port number generated for the USB connection to EV-Kit.
This generated COM Port value must match the COM Port value in the program setting for
the application to establish proper communication with EV-Kit.
After complete installation, please proceed to [4.4 GPS Viewer Software usage] .
Note: for using GPS Viewer, Microsoft Framework version 3.5 or later is needed.
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
17
GlobalTop Technology
EV-Kit User Manual (MT3333 series)
Document #
Ver. A03
4.4 Using GPS Viewer
 Open GPS viewer software (for using GPS Viewer, Microsoft Framework
version 3.5 or later is required).
 Double click < GPS Viewer.exe> to start the application.
 Select corresponding & appropriate values for <COM Port>, < Baud Rate >
and < Chip >, then click <Open>.
Please refer to figure shown below:
Step 1
Step 2
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
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GlobalTop Technology
EV-Kit User Manual (MT3333 series)
Document #
Ver. A03
 After <Open> is clicked, the following screen will show up:
Firmware Version
GPS Status
SBAS on by firmware default
View NMEA code
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
19
GlobalTop Technology
EV-Kit User Manual (MT3333 series)
Document #
Ver. A03
5. RTCM Usage
5.1 RTCM hardware setting
Compatible Models: Gmm-g3、Gms-g9、Gms-g6、Gms-b6
Note: Gmm-3301 also supports this function but that needs to be setup in firmware.
 Getting RTCM data via RS232port:
 Connect the RS232 cable to GNSS simulator and EV-Kit. The RS232 cable is
connected to EV-Kit RS232 port (J2) and to GNSS simulator or other RTCM
server as the figures shown below.
RS232 communication port (J2)
Power switch (SW1)
to ON (Enable)
GNSS Simulator Hardware set up as below:
RS232 communication port
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
20
GlobalTop Technology
EV-Kit User Manual (MT3333 series)
Document #
Ver. A03
5.2 RTCM software setting
GNSS Simulator software set up:
(If RTCM data are acquired from third party, then please contact the third party for all necessary
information).
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
21
GlobalTop Technology
EV-Kit User Manual (MT3333 series)
Document #
Ver. A03
 In GPS viewer, functions of RTCM for GNSS Module can be checked when
RTCM is enabled.
 The default setting of RTCM in GlobalTop’s GNSS modules is disabled. If
customer needs it enabled, please check firmware feasibility or contact
GlobalTop.
RTCM on by
firmware setting
 Check NMEA output sentences and see if RTCM is enabled. Please see the
example below:
$GPRMC,064951.000,A,2307.1256,N,12016.4438,E,0.03,165.48,260406,3.05,W,D*2C
$GPVTG,165.48,T,,M,0.03,N,0.06,K,D*37
D = Differential mode(DGPS)
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
22
GlobalTop Technology
EV-Kit User Manual (MT3333 series)
Document #
Ver. A03
23
6. Trouble-shooting
6.1 Problems with Setup
Problem
Possible Cause
USB was not setup properly
Cannot find GNSS
device
(1) USB was not setup properly.
(2) COM Port or Baud rate value is
incorrect
No NMEA data or
GNSS signals
Poor GNSS Signal
Reception
Trouble shooting
Check to see if EV-Kit was setup
properly, and make sure that the
device is receiving enough power
through the USB cable (Red LED
should light up continuously).
(1) Check to see if the USB connector
to PC or EV-Kit is connected
properly.
(2) Double check to see if the proper
COM Port and Baud rate value are
selected.
(1) If it is used inside a vehicle, the
anti-sunscreen film on the
windshield may interfere and
weaken the GNSS signal.
For both problems, the user may
apply the external antenna with the
EV-Kit, and then place the antenna on
top roof of the car to improve signal
reception.
(2) The vehicle might be under some
area with dense overhead canopy
such as forest, buildings,
tunnels… etc.
Note: if the options of troubleshooting do not solve the problem, please contact us or
send it back to us for inspection.
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
GlobalTop Technology
EV-Kit User Manual (MT3333 series)
Document #
Ver. A03
6.2 About Poor GNSS Signal
It is possible to have weak GNSS signal under the following situations:
Inside a tunnel, where GNSS signal is blocked.
Underneath an infrastructure (like bridge), where GNSS
signal is blocked.
Inside a building, where GNSS signal is blocked.
Next to tall buildings, where GNSS signal is weakened.
Underneath forests or any other kinds of canopy where
GNSS signal is weakened.


If the EV-Kit is used inside a car which it has anti-sunlight films on the windshield
and windows, the GPS signal will be weakened severely, and may result to no GPS
reception.
GNSS satellites are property of United States Army. Sometimes they will tunedown the accuracy for unknown reasons. In such cases, the GNSS position may not
be accurate.
This document is the exclusive property of GlobalTop Tech Inc. and should not be distributed, reproduced, into any other format without
prior permission of GlobalTop Tech Inc. Specifications subject to change without prior notice.
Copyright © 2012 GlobalTop Technology Inc. All Rights Reserved.
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