CSI Wireless GBX User manual

GBX
Reference Manual
Part Number 875-0018-003
Date: May 2001

GBX Reference Manual ii
CSI Wireless Inc.
1200 -58 Avenue SE
Calgary, Alberta, Canada T2H 2C9
Telephone number: [phone]
Fax number: [phone]
E-mail address: [e-mail]
Web Site: www.csi-wireless.com

GBX Reference Manual iii
Copyright Notice
Copyright 1998 by CSI Wireless, Inc. All rights reserved.
No part of this manual may be stored in a retrieval system, transmitted,
or reproduced by any means, including, but not limited to photocopy,
photograph, digitizing, or otherwise, without the prior written permission
from CSI Wireless, Inc.
FCC Notice
The GBX combination GPS/Beacon receiver complies with the Part 15,
Subpart J Emission Requirement for Class A digital devices for use in
commercial, business, and industrial environments.
The GBX combination GPS/Beacon receiver complies with relevant
sections of the following European harmonized documents:
•EN 60945 Marine Navigation Requirements
•EN 50081-1 Emissions for Residential, Commercial and Light Industry
•EN 50082-1 IMMUNITY FOR RESIDENTIAL, COMMERCIAL AND LIGHT INDUSTRY

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iv
CSI Wireless Limited Warranty
CSI Wireless, Inc. (hereinafter referred to as "CSI Wireless") products
are warranted, subject to the conditions set forth herein below, against
defects in material and workmanship for a period of 12 months.
Warranty services will be provided through your CSI Wireless
distribution center, please contact them for shipping information. You
must retain your proof of purchasefor warranty purposes.
Limitation of Liability
The Limited Warranty contained herein replaces all other warranties,
express or implied, including warranties of merchantability or fitness for
a particular purpose. CSI Wireless hereby disclaims and excludes all
other warranties. In no event shall CSI Wireless be liable for direct,
indirect, incidental, collateral or consequential damages of any kind,
including but not limited to damages resulting from installation or use,
quality, performance, or accuracy of CSI Wireless products. This
warranty provides you with your exclusive remedies for any breach in
warranty.
Purchaser’s Exclusive Remedy
The purchaser’s exclusive remedy under this warranty shall be limited
to the repair or replacement, at the option of CSI Wireless, of any
defective part(s) of CSI Wireless receivers or accessories. Repairs
shall be made through a CSI Wireless approved service center only.
Unauthorized repairs to CSI Wireless products shall render this
warranty null and void.

GBX Reference Manual
v
Governing Legislation
This warranty shall be governed by the laws of the Province of Alberta,
Canada. This warranty gives you specific legal rights which may vary
with Province/State and Country, and accordingly, some limitations
may not apply to you.
Conditions
CSI Wireless does not warrant damage due to misuse, abuse,
improper installation, neglect, lightning (or other electrical discharge) or
fresh/salt water immersion of CSI Wireless products. Repair,
modification or service of CSI Wireless products by unauthorized
person(s) or party(s) shall render this warranty null and void.
CSI Wireless does not warrant or guarantee the precision or accuracy
of positions obtained when using CSI Wireless products. Product
accuracy as stated in CSI Wireless literature and/or product
specifications serves to provide only an estimate of achievable
accuracy based on:
•Specifications provided by the US Department of Defense (US
DoD) for GPS Positioning,
•GPS OEM Receiver specifications of the appropriate manufacturer
(if applicable),
•Radiobeacon network performance specifications of the appropriate
agency
CSI Wireless reserves the right to modify CSI Wireless products
without any obligation to notify, supply or install any improvements or
alterations to existing products.

GBX Reference Manual vi

GBX Reference Manual vii
TABLE OF CONTENTS
List of Figures...........................................................................................................................xiii
List of Tables.............................................................................................................................xv
Preface xvii
Organization..................................................................................................................xvii
Customer Service..........................................................................................................xix
World Wide Web Site.................................................................................................xix
Document Conventions................................................................................................xx
Notes, Cautions, and Warnings..................................................................................xx
1. Introduction.......................................................................................................................1
1.1 GPS...........................................................................................................................1
1.1.1 How it Works...........................................................................................1
1.1.2 GPS Services.............................................................................................2
1.2 Differential GPS......................................................................................................2
1.2.1 How it Works...........................................................................................2
1.2.2Real-Time DGPS......................................................................................3
1.3 DGPS Format..........................................................................................................3
1.4 Radiobeacon DGPS Service.................................................................................4
1.4.1 Radiobeacon Range.................................................................................4
1.4.2 Radiobeacon Reception..........................................................................5
1.4.3 Radiobeacon DGPS.................................................................................5
1.4.4 Radiobeacon Coverage...........................................................................6
1.5 Factors Affecting Positioning Accuracy.............................................................7
1.6 GBX Receiver Information.................................................................................10

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1.7 MGL-3 Antenna Information..............................................................................10
1.8 Antenna Signal Combiner..................................................................................11
2. Installation........................................................................................................................13
2.1 System Parts List...................................................................................................13
2.2 Receiver Layout and Connections....................................................................13
2.3 Installing the GBX Receiver...............................................................................14
2.3.1 Receiver Placement................................................................................14
2.3.2 Environmental Considerations............................................................15
2.3.3 Power Considerations...........................................................................15
2.3.4 Grounding the GBX..............................................................................16
2.3.5 Connecting the GBX To External Devices.......................................16
2.4 GBX-PRO Secondary Serial Port......................................................................18
2.5 Installing the MGL-3 Antenna............................................................................19
2.5.1 Antenna Placement To Optimize Reception....................................19
2.5.2 Antenna Installation...............................................................................20
2.5.3 Routing and Securing the Antenna Cable.........................................21
2.5.4 Connecting the MGL-3 Antenna.........................................................21
2.6 Optional Accessories..........................................................................................22
2.6.1 Magnetic Mount......................................................................................22
2.6.2 Permanent Mount..................................................................................22
2.6.3 Survey Adapter.......................................................................................22
2.6.4 ‘Y’ Data Cable........................................................................................22
3. Configuration and Operation......................................................................................25
3.1 Front Display and Keypad.................................................................................25
3.2 GBX Operating Modes.......................................................................................26
3.2.1 GBx –GPS / Beacon Receiver Mode.................................................26
3.2.2 Gx-E –GPS / External Correction Receiver Mode..........................26

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3.2.3 Bx –Beacon Receiver Mode................................................................27
3.2.4 Bx-E –Beacon Receiver Mode, External GPS Display...................27
3.3 Receiver Lock Indication.....................................................................................28
3.3.1 Position Fix Status..................................................................................28
3.3.2 Beacon Lock Status................................................................................29
3.4 Factory Default Parameters................................................................................30
3.5 Beacon Receiver Tune Modes...........................................................................31
3.5.1 Automatic Beacon Search (ABS) Mode..............................................31
3.5.2 Manual Mode..........................................................................................32
3.6 Beacon Receiver Performance -SNR Reading...............................................33
3.7 GBX Menu System...............................................................................................34
3.7.1 Start-Up Sequence.................................................................................34
3.7.2 Position Status Menu –GBx, Gx-E, and Bx-E Mode......................36
3.7.3 Satellites Menu –GBx, Gx-E, and Bx-E Mode.................................38
3.7.4 Beacon Status Menu –GBx, Bx, and Bx-E Mode............................39
3.7.5 Setup Menu –All Modes......................................................................40
3.7.6 Options Menu –All Modes..................................................................42
3.8 Configuring the Receiver....................................................................................45
3.8.1 Change Baud Rate.................................................................................45
3.8.2 Change Frequency and MSK Rate......................................................45
3.8.3Select a Beacon By Name.....................................................................45
3.8.4 Set to Automatic Beacon Search Mode.............................................46
3.8.5 Change Operating Mode......................................................................46
3.9 User Defined Beacon Table...............................................................................46
3.10 Firmware Updates................................................................................................47
4. GPS NMEA 0183 Messages..........................................................................................48
4.1 Description of NMEA 0183...............................................................................48

GBX Reference Manual x
4.2 NMEA Message Elements...................................................................................48
4.2.1 CSI Wireless GPS Command Center.................................................49
4.3 GBX-8M Message Activation.............................................................................49
4.4 GBX-8A Message Activation..............................................................................50
4.5 GBX-12C Message Activation...........................................................................50
4.6 GBX-12R Message Activation............................................................................51
4.7 GBX-PRO Message Activation..........................................................................52
4.8 GPS Receiver NMEA Data Messages...............................................................53
4.8.1 GGA Data Message...............................................................................53
4.8.2 GLL Data Message (All Except GBX-12R)........................................54
4.8.3 GSA Data Message................................................................................54
4.8.4 GSV Data Message.................................................................................55
4.8.5 RMC Data Message................................................................................56
4.8.6 SAT Data Message (GBX-8A and GBX-PRO only).......................56
4.8.7 VTG Data Message................................................................................57
4.8.8 ZDA Data Message (All except GBX-12R).......................................58
5. GBX NMEA 0183 Messages.........................................................................................60
5.1 GBX Supported Messages..................................................................................60
5.2 GBX Beacon Response Message.......................................................................60
5.3 GBX Beacon Commands....................................................................................61
5.3.1 Standard Commands.............................................................................61
5.3.2 Proprietary Commands.........................................................................64
5.4 GBX Beacon Queries..........................................................................................67
5.4.1 Standard Queries...................................................................................67
5.4.2 Proprietary Queries...............................................................................68
6. Troubleshooting.............................................................................................................70

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Appendix A -Specifications...................................................................................................72
Appendix B –GBX Connectivity..........................................................................................76
Appendix C -Beacon Information........................................................................................82
Further Reading........................................................................................................................84
Index.. 86

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GBX Reference Manual xiii
LIST OF FIGURES
Figure 1-1 Wold DGPS Radiobeacon Coverage.................................................................7
Figure 2-1 GBX Cable Connectivity.....................................................................................14
Figure 2-2 Figure 2-2 GBX Socket Connector Pin Numbering......................................17
Figure 2-3 GBX Interface, RS-232C Interface Level..........................................................18
Figure 3-1 GBX Display and Keypad...................................................................................25
Figure 3-2 GBX GPS Position Fix Indicator........................................................................28
Figure 3-3 GBX Beacon Lock Indicator...............................................................................29
Figure 3-4 Gx-E RTCM Source Indicator............................................................................30
Figure 3-5 GBX Menu System...............................................................................................35
Figure A-1 External Signal Combiner..................................................................................75
Figure B-1 GBx Mode Interface.............................................................................................77
Figure B-2 Gx-E Mode Interface............................................................................................78
Figure B-3 Bx Mode Interface................................................................................................79
Figure B-4 Bx-E Mode Interface.............................................................................................80

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LIST OF TABLES
Table 2-1 Power Requirements of the GBX.......................................................................15
Table 2-2 GBX Data Port Pin-out, RS-232C Interface Level...........................................17
Table 2-3 ‘Y’ Data Cable Pin-out (PN 051-0009-000)....................................................23
Table 3-1 Preset GBX Operating Settings..........................................................................30
Table 3-2 Preset GBX Port Settings.....................................................................................30
Table 3-3 Preset GBX GPS NMEA Message Output........................................................31
Table 3-3 Receiver Performance -SNR Reading...............................................................33
Table 3-1 Beacon Health Status Values...............................................................................40
Table 4-1 NMEA Message Elements.....................................................................................49
Table 4-2 GGA Data Message Defined...............................................................................53
Table 4-3 GLL Data Message Defined.................................................................................54
Table 4-4 GSA Data Message Defined................................................................................55
Table 4-5 GSV Data Message Defined.................................................................................55
Table 4-6 RMC Data Message Defined................................................................................56
Table 4-7 SAT Data Message Defined.................................................................................57
Table 4-8 VTG Data Message Defined................................................................................57
Table 4-9 ZDA Data Message Defined................................................................................58
Table 5-1 GBX Supported NMEA Messages......................................................................60
Table 5-2 GBX Baud Rates....................................................................................................65
Table 5-3 GBX Factory Pre-Configured Baud Rates.........................................................66
Table 5-4 GBX Operating Modes.........................................................................................67
Table 6-1 Troubleshooting....................................................................................................70
Table A-1 GBX Combination GPS/Beacon Receiver Specifications...............................72
Table A-2 MGL-3 Combined Loop / GPS Antenna Specifications.................................74

GBX Reference Manual xvi
Table A-3 External Signal Combiner Specifications..........................................................74

GBX Reference Manual xvii
PREFACE
Welcome to the GBX Reference Manual and congratulations on
purchasing this high performance differential GPS product. The
purpose of this manual is to familiarize you with the proper installation,
configuration, and operation of your new receiver.
The GBX is a fully integrated DGPS sensor, possessing both an
internal GPS and beacon differential receiver. The GPS engine housed
within the GBX is a leading L1 OEM receiver, employing proven
hardware and software features for real-time positioning and navigation
applications. The beacon engine contained within the GBX is CSI
Wireless's state-of-the-art, fully automatic, dual channel SBX-2. This
integrated DGPS product is designed to function in a wide array of
applications and environments. Compact, lightweight, yet rugged, the
GBX will provide you with years of reliable operation.
The GBX Series of receivers are very similar, differing only due to the
type of GPS receiver installed. As such, this document refers to both
receivers collectively as the GBX, noting any differences between the
different models where appropriate.
Organization
This manual contains the following chapters:
Chapter 1: Introduction -provides an introduction to GPS and DGPS
technology, the GBX combination GPS/Beacon receiver, and CSI
Wireless's combination GPS/Beacon antenna, the MGL-3.
Chapter 2: Installation -describes how to install the GBX receiver and
MGL-3 antenna, and provides a foundation for interfacing the GBX with
an external data logging or monitoring device.
Chapter 3: Configuration and Operation -provides details and
instructions to configure and operate the GBX receiver.

GBX Reference Manual xviii
Chapter 4: GPS NMEA 0183 Interface -describes the subset of NMEA
0183 commands and queries used to communicate with the GPS
features of the GBX receiver.
Chapter 5: Beacon NMEA 0183 Interface -describes the subset of
NMEA 0183 commands and queries used to communicate with the
beacon features of the GBX receiver.
Chapter 6: Troubleshooting -provides you with diagnostic information to
aid in determining a source of difficulty for a particular installation.
Appendix A: Specifications -details the technical characteristics of the
GBX receiver, and MGL-3 antenna.
Appendix B: GBX Operating Mode Interface-Provides instruction to
interface the GBX with external devices in its four distinct operating
modes {GBx, Gx-E, Bx, and Bx-E}.
Appendix C: Beacon Information -Provides a reference for DGPS
beacon transmitter sites and general information.
The Further Reading section provides a listing of GPS/DGPS sources
for further information.
The Index provides a listing of the locations of subject matter within this
manual.

GBX Reference Manual xix
Customer Service
If you encounter problems during the installation or operation of this
product, or cannot find the information you need, please contact your
dealer, or CSI Wireless Customer Service. The contact numbers and
e-mail address for CSI Wireless Customer Service are:
Telephone number: [phone]
Fax number: [phone]
E-mail address: [e-mail]
Technical Support is available from 8:00 AM to 5:00 PM Mountain Time,
Monday to Friday.
To expedite the support process, please have the product model and
serial number available when contacting CSI Wireless Customer
Service.
In the event that your equipment requires service, we recommend that
you contact your dealer directly. However, if this is not possible, you
must contact CSI Wireless Customer Service to obtain a Return
Merchandise Authorization (RMA) number before returning any product
to CSI Wireless. If you are returning a product for repair, you must also
provide a fault description before CSI Wireless will issue an RMA
number.
When providing the RMA number, CSI Wireless will provide you with
shipping instructions to assist you in returning the equipment.
World Wide Web Site
CSI Wireless maintains a World Wide Web home page at the following
address:
www.csi-wireless.com

GBX Reference Manual xx
A corporate profile, product information, application news, GPS and
DGPS literature, beacon coverage information, and software are
available at this site.
Document Conventions
Arial Bold is used to emphasize certain points.
America Bold indicates information presented on the display of the
receiver.
This icon indicates that you should press the up arrow button of the
receiver keypad.
This icon indicates that you should press the Enter button of the
receiver keypad.
This icon indicates that you should press the down arrow button of
the receiver keypad.
Notes, Cautions, and Warnings
Notes, Cautions, and Warnings stress important information regarding
the installation, configuration, and operation of the GBX combination
GPS/L-band/Beacon receiver.
Note -Notes outline important information of a general nature.
Cautions -Cautions inform of possible sources of difficulty or
situations that may cause damage to the product.
Warning -Warnings inform of situations that may cause harm to
yourself.