Hemisphere GPS V102 G User manual

V102 GPS Compass
User Guide
Part No. 875-0276-000 Rev C1

This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause
undesired operation.
Copyright Notice
Hemisphere GPS Precision GPS Applications
Copyright © Hemisphere GPS (2011). All rights reserved.
No part of this manual may be reproduced, transmitted, transcribed, stored in a retrieval system or
translated into any language or computer language, in any form or by any means, electronic,
mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission
of Hemisphere GPS.
Trademarks
Hemisphere GPS®, the Hemisphere GPS logo, A100TM, A20TM, A21TM, A220TM, A221TM, A30TM,
A42TM, A52TM, AerialACETM, AirStarTM, AirTracTM, AutoMateTM, BantamTM, BaseLineHDTM,
BaseLineXTM, BEELINE®, COASTTM, Contour LockTM, Crescent®, Earthworks®, EclipseTM, e-Dif®,
eDrive®, eDriveTCTM, eDriveVSiTM, eDriveXTM, FliteTracTM, G100TM, GateMateTM, GPSteerTM, H102TM,
HQTM, IntelliFlow®, IntelliGateTM, IntelliStarTM, IntelliTracTM, Just Let GoTM, L-DifTM, LiteStar IITM,
LV 101 TM, LX-1TM, LX-2TM, M3TM, MapStar®, MBX-4TM, miniEclipseTM, OutbackTM, Outback 360TM,
Outback Guidance CenterTM, Outback Guidance®, Outback HitchTM, Outback STM, Outback S2TM,
Outback S3TM, Outback S-LiteTM, Outback StsTM, Outback Steering GuideTM, PocketMAX PCTM,
PocketMAXTM, PocketMax3TM, R100TM, R131TM, R220TM, R320TM, Satloc®, the Satloc logo, SBX-4TM,
V101TM, V102TM, V 111 TM, VS101TM, V S 111 TM, VectorTM, X200TM, X300TM, XF100TM, XF101TM, and
XF102TM are proprietary trademarks of Hemisphere GPS. Other trademarks are the properties of their
respective owners.
Patents
The Outback STM and S-LiteTM automated navigation and steering guide system is covered by U.S.
Patents No. 6,539,303 and No. 6,711,501. The Outback HitchTM automated hitch control system is
covered by U.S. Patent No. 6,631,916. The Outback eDriveTCTM GPS assisted steering system is
covered by U.S. Patent No. 7,142,956. Hemisphere GPS products may be covered by one or more of
the following U.S. Patents:
Other U.S. and foreign patents pending.
6,111,549 6,397,147 6,469,663 6,501,346 6,539,303
6,549,091 6,631,916 6,711,501 6,744,404 6,865,465
6,876,920 7,142,956 7,162,348 7,277,792 7,292,185
7,292,186 7,373,231 7,400,956 7,400,294 7,388,539
7,429,952 7,437,230 7,460,942

Notice to Customers
Contact your local dealer for technical assistance. To find the authorized dealer near you:
Hemisphere GPS
4110 9th Street S.E.
Calgary, Alberta, Canada T2G 3C4
Phone: [phone]
Fax: [phone]
[e-mail]
www.hemispheregps.com
Technical Support
If you need to contact Hemisphere GPS Technical Support:
8444 N 90th St, Suite 130
Scottsdale, AZ 85258 USA
Phone: [phone]
Fax: [phone]
[e-mail]
Documentation Feedback
Hemisphere GPS is committed to the quality and continuous improvement of our products and
services. We urge you to provide Hemisphere GPS with any feedback regarding this guide by writing
to the following email address: [e-mail].

V102 GPS Compass User Guide
iii
Contents
Chapter 1 Introduction
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Chapter 2 Installation
Mounting Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
GPS Reception. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
V102 Environmental Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
VHF Interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Mounting Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
V102 Alignment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Mounting Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
V102 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Power/Data Cable Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Flush Mount. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Pole Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Powering the V102. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Power Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Connecting to a Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Electrical Isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Connecting the V102 to External Devices . . . . . . . . . . . . . . . . . . . . . . . . 22
Power/Data Cable Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Power/Data Cable Pinout Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 23

iv
Contents
Serial Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Default Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Chapter 3 Operation
GPS Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
GPS Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Differential Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
V102 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Fixed Baseline Moving Base Station RTK. . . . . . . . . . . . . . . . . . . . . . . . 30
Supplemental Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Time Constants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Common Commands and Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Appendix A Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Appendix B Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
End User License Agreement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Warranty Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Chapter 1: Introduction
Overview
Parts List

2
Chapter 1: Introduction
Overview
The V102™ GPS Compass is based upon Hemisphere GPS’ exclusive
Crescent®and Crescent Vector™ II technology.
The V102 is a complete GPS compass and positioning system in a single
enclosure that requires only one power/data cable connection. With its CAN
support and ease of installation, the V102 is the perfect solution for both
marine and land-based applications such as mine construction, earthworks
and machine guidance.
The V102 is an integrated system that houses the following:
• Crescent and Crescent Vector II technology
• Dual integrated GPS antennas
• Power supply
• Single axis gyro
• Tilt sensor on each axis (X and Y axes)
The gyro and tilt sensors are present to improve system performance and to
provide backup heading information in the event that a GPS heading is not
available due to signal blockage.
Crescent Vector II technology supports multiple RF front ends - enabling
tighter coupling of measurements from separate antennas for use in
heading-based products. Users will achieve excellent accuracy and stability
due to Crescent’s more accurate code phase measurements, improved
multipath mitigation, and fewer components.
The V102’s GPS antennas are separated by 27.5 cm between their phase
centers, resulting in better than 0.75° rms heading performance. The V102
provides heading and positioning updates of up to 20 Hz and delivers
positioning accuracy of better than 1.0 m 95% of the time when using
differential GPS corrections from Space Based Augmentation Systems
(SBAS).
The V102 also features Hemisphere GPS’ exclusive COAST™ technology that
enables Hemisphere GPS receivers to utilize old differential GPS correction
data for 40 minutes or more without significantly affecting the positioning

V102 GPS Compass User Guide
3
quality. The V102 is less likely to be affected by differential signal outages
due to signal blockages, weak signals, or interference when using COAST.
If you are new to GPS and SBAS, refer to the GPS Technical Reference for
further information on these services and technologies before proceeding.
The GPS Technical Reference is available from the Hemisphere GPS website
at www.hemispheregps.com.
Parts List
Note: The V102’s parts comply with IEC 60945 Section 4.4: “exposed to the
weather.”
The V102 GPS Compass and the power/data cable (accessory item) are the
only two required components.
This User Guide is available for download from the Hemisphere GPS
website at www.hemispheregps.com.
Table 1-1: Parts list
Part Name Qty Part Number
V102 GPS Compass 1 804-0075-000#
(Accessory item)
Kit containing the following:
• Power/data cable, 15 m
•Clamp
•Screw
•Washer
1
1
1
1
880-1036-000
Quick Reference Guide 1 875-0277-000

Chapter 2: Installation
Mounting Location
Mounting Orientation
Mounting Options
Powering the V102
Connecting the V102 to External Devices