NavCom SF-2040 User Manual Rev.C

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NavCom Technology, Inc.

20780 Madrona Avenue
Torrance, California 90503 USA

Tel: [phone]
Fax: [phone]

[e-mail]
www.navcomtech.com

P/N:

-

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LAND-PAK™ User Guide – Rev. C

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LAND-PAK™ User Guide – Rev. C

Table of Contents

List of Figures.........................................................iv

List of Tables ........................................................viii

Notices ..........................................................ix

Copyright...................................................................ix

Trademarks ...............................................................ix

FCC Notice.................................................................x

User Notice.................................................................x

Limited Warranty .......................................................xi

StarFire™ Licensing.................................................xii

USG FAR.................................................................. xii

Global Positioning System ....................................... xii

Revision History....................................................xiv

Use of this Document............................................xv

Related Documents......................................................xv

StarUtil User Guide...................................................xv

Technical Reference Manual...................................xvi

RINEXUtil User Guide............................................. xvi

Integrators Toolkit.................................................... xvi

NavCom Release Notes..........................................xvi

Related Standards...................................................... xvii

ICD-GPS-200 ......................................................... xvii

RTCM-SC-104........................................................ xvii

CMR, CMR+........................................................... xvii

NMEA-0183............................................................ xvii

Publicly-Operated SBAS Signals ........................... xvii

RTCA/DO-229D................................................. xvii

WAAS (Wide Area Augmentation System)........xviii

EGNOS (European Geostationary Navigation

Overlay Service).................................................xviii

MSAS (MTSAT Satellite-based Augmentation

System)..............................................................xviii

GAGAN (GPS Aided Geo Augmented

Navigation).........................................................xviii

Chapter 1 Introduction ....................................19

Unique Features.......................................................... 19

Typical Applications..................................................... 21

System Description...................................................... 21

NavCom SF-2040 GPS Sensors..............................21

Base Station and Rover Radio Modems..................23

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LAND-PAK™ User Guide – Rev. C

Explorer 600+ Data Collector...................................25

SurvCE Software......................................................27

TruBlu™ Module ......................................................29

Office Software.........................................................30

The LAND-PAK Interfacing.......................................... 31

The LAND-PAK Configurations................................... 31

The LAND-PAK LM..................................................31

The LAND-PAK 869.................................................32

Chapter 2 Inventory Check.............................35

Base Station Inventory.............................................36

Rover Inventory........................................................39

Office Supplies Inventory .........................................42

Chapter 3 Battery Charging............................45

SF-2040 GPS Sensor Battery Packs........................... 45

3ASd Epic Radio Modem Bag Battery......................... 49

3ASd and 3ASd 869 Radio Modem Battery................ 51

Carlson Explorer 600+ Battery Pack........................... 54

Chapter 4 Function Test Setup ...................... 59

Radio Modem Configuration........................................ 60

Soft Keys..................................................................61

Operating Modes......................................................62

Configuration............................................................63

RF Frequency Configuration....................................64

RF Power Output......................................................66

Signal Threshold ......................................................68

Addressing Settings .................................................69

Serial Port Settings...................................................69

Handshaking ............................................................71

Additional..................................................................71

Base Station Test Setup.............................................. 74

Rover Test Setup......................................................... 83

Chapter 5 SurvCE Software Operation..........89

Overview...................................................................... 89

File Types.................................................................89

File Management......................................................90

SurvCE Window Icons..............................................90

Getting Started............................................................. 91

Create A New Job....................................................91

Job Settings..............................................................93

GPS Base Setup......................................................99

Assign a Base Position...........................................105

Verify GPS Base Setup..........................................107

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LAND-PAK™ User Guide – Rev. C

Static Data Collection.............................................107

GPS Rover Setup...................................................108

Verify GPS Rover Setup.........................................113

GPS Utilities ...........................................................114

Monitor/Skyplot.......................................................116

Configure................................................................119

Tolerances..............................................................122

Survey Menu (Measuring Point Positions).............123

Store Points............................................................125

Additional SurvCE Options........................................126

Localization.............................................................126

Stake Points ...........................................................129

Points......................................................................132

Feature Code List...................................................133

COGO Menu...........................................................133

Chapter 6 Data Transfer ................................135

Installation.................................................................. 135

Introduction................................................................ 136

Exercises................................................................... 137

Menus & Commands.................................................144

Add Menu...............................................................144

Process (Compute Points) Menu ...........................146

Chapter 7 Equipment Maintenance..............151

Transport................................................................151

Maintenance...........................................................151

Battery Disposal .....................................................151

Safety First .............................................................152

A The LAND-PAK 869 Inventory Check ............153

Base Station Inventory...........................................154

Rover Inventory......................................................157

Office Supplies Inventory .......................................160

B Additional Base Position Options..................163

From New Position Tab............................................. 163

From Known Position Tab ......................................... 165

C TruBlu Configuration ......................................167

D Static Data Collection......................................171

Collect Static Data..................................................... 171

Download Static Data File ......................................... 173

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LAND-PAK™ User Guide – Rev. C

List of Figures

Figure 1: SF-2040, Viewed From Bottom................ 22

Figure 2: Radio Modem LED Indicators .................. 23

Figure 3: Carlson Explorer 600+ User Interface......26

Figure 4: The LAND-PAK Interfacing ...................... 31

Figure 5a: Base Transit Case Supplied Equipment.36
Figure 5b: Base Transit Case Supplied Equipment.37

Figure 6: Base Bag Supplied Equipment.................38

Figure 7a: Rover Transit Case Supplied Equipment39
Figure 7b: Rover Transit Case Supplied Equipment40

Figure 8: Rover Bag Supplied Equipment...............41

Figure 9: Office Supplies Transit Case....................42

Figure 10: Battery Locking Clips.............................. 47

Figure 11: NavCom Base Cable..............................50

Figure 12: AC/DC Adapter Input Plug ..................... 55

Figure 13: Battery Charger/Charging Cable............ 55

Figure 14: Explorer 600+ Charger Connection........ 56

Figure 15: CHG LED ............................................... 56

Figure 16: Radio Modem Soft Keys......................... 61

Figure 17: LCD Display – Data Transfer Mode ....... 62

Figure 18: LCD Display – Programming Mode........62

Figure 19: Data Transfer Mode ............................... 64

Figure 20: Active Channel.......................................65

Figure 21: Next Digit................................................65

Figure 22: Set Frequency........................................ 66

Figure 23: Main Menu – Radio Settings..................67

Figure 24: TX level option........................................67

Figure 25: RF Power Output Settings...................... 67

Figure 26: Main Menu – Radio Settings..................68

Figure 27: Sig. Threshold option ............................. 68

Figure 28: Main Menu – Port 1 Setting....................69

Figure 29: Baud Rate Setting..................................70

Figure 30: Baud Rate Setting Change..................... 70

Figure 31: Main Menu – Additional Setting.............. 72

Figure 32: Error Correction and Error Checking......72

Figure 33: SL-Commands and Priority....................73

Figure 34: Save Changes........................................73

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LAND-PAK™ User Guide – Rev. C

Figure 35: Base Station Tripod – Leg Adjustments .75

Figure 36: Base Station Tripod................................75

Figure 37: Mounting Tribrach & Tribrach Adapter....76

Figure 38: Mounting the Radio Antenna Bracket.....77

Figure 39: Mounting the Antenna and Cable...........78

Figure 40: Avoiding Radiation Hazard.....................79

Figure 41: Mounting the Radio and Bag Battery......80

Figure 42: Mounting Cable to the Radio Modem.....81

Figure 43: Mounting Base SF-2040.........................81

Figure 44: NavCom Base Cable Connections.........82

Figure 45: Mounting the Rover Pole to the Bipod....84

Figure 46: Rover Pole and Bipod.............................84

Figure 47: Mounting the Carlson Explorer 600+......85

Figure 48: Mounting Radio Modem..........................86

Figure 49: NavCom Rover Cable Connections........87

Figure 50: Rover Pole Knob and Locking Pin..........88

Figure 51: Coiled Serial Cable.................................91

Figure 52: Desktop with SurvCE Icon......................91

Figure 53: SurvCE Job Selection Box......................92

Figure 54: Coordinate Files Window........................92

Figure 55: File Menu – Job Settings........................93

Figure 56: Job Settings Submenu – New Job Tab ..94

Figure 57: Job Settings Submenu – System Tab ....94

Figure 58: Coordinate Projection Window ...............95

Figure 59: Job Settings Submenu – Format Tab.....96

Figure 60: Job Settings Submenu – Options Tab....97

Figure 61: Job Settings Submenu – Stake Tab.......98

Figure 62: Equip Menu – GPS Base........................99

Figure 63: GPS Base Submenu – Current Tab .....100

Figure 64: GPS Base Submenu – Comms Tab.....100

Figure 65: GPS Base Submenu – Receiver Tab ...101

Figure 66: USER Antenna Type ............................102

Figure 67: GPS Base Submenu – RTK Tab ..........103

Figure 68: Configure Satel Radio Window............. 104

Figure 69: From New Position Options..................105

Figure 70: Average GPS Window..........................105

Figure 71: Base Configuration Window .................106

Figure 72: Equip Menu – GPS Rover ....................108

Figure 73: GPS Rover Submenu – Current Tab....109

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LAND-PAK™ User Guide – Rev. C

Figure 74: GPS Rover Submenu – Comms Tab...109
Figure 75: GPS Rover Submenu – Receiver Tab . 110

Figure 76: GPS Rover Submenu – RTK Tab ........ 112

Figure 77: Configure Satel Radio Window ............ 113

Figure 78: Equip Menu – GPS Utilities.................. 114

Figure 79: GPS Utilities Submenu Options ........... 114

Figure 80: Equip Menu – Monitor/Skyplot ............. 116

Figure 81: Monitor/Skyplot Submenu – Quality..... 116

Figure 82: Monitor/Skyplot Submenu – Position ... 118
Figure 83: Monitor/Skyplot Submenu – SATView . 118
Figure 84: Monitor/Skyplot Submenu – SATInfo...119

Figure 85: Equip Menu – Configure....................... 119

Figure 86: Configure Submenu – General Tab ..... 120

Figure 87: Configure Submenu – View Pt Tab...... 121

Figure 88: Equip Menu – Tolerances .................... 122

Figure 89: Tolerances Submenu Options..............122

Figure 90: Store Points Interface........................... 123

Figure 91: Survey Menu – Store Points................. 125

Figure 92: Equip Menu – Localization...................126

Figure 93: Localization Submenu Options.............127

Figure 94: Localization Submenu – System Tab...127

Figure 95: Localization Submenu – GPS Tab.......128

Figure 96: Localization Submenu – Points Tab.....128

Figure 97: Localization Submenu – By Helmert....128

Figure 98: Survey Menu – Stake Points................ 129

Figure 99: Stake Points Window ........................... 130

Figure 100: File Menu – Points..............................132

Figure 101: Points Submenu................................. 132

Figure 102: File Menu – Feature Code List........... 133

Figure 103: X-Port Data Editors ............................ 136

Figure 104: Import Point Data Window.................. 138

Figure 105: SurvCE Data Transfer Window..........139

Figure 106: Set Geoid Area Window..................... 141

Figure 107: Print Coordinates Window..................143

Figure 108: Process Options Window...................147

Figure 109a: Base Transit Case Supplied Equip... 154
Figure 109b: Base Transit Case Supplied Equip... 155

Figure 110: Base Bag Supplied Equipment........... 156

Figure 111a: Rover Transit Case Supplied Equip.157

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LAND-PAK™ User Guide – Rev. C

Figure 111b: Rover Transit Case Supplied Equip..158

Figure 112: Rover Bag Supplied Equipment..........159

Figure 113: Office Supplies Transit Case..............160

Figure 114: Base Configuration Window ...............163

Figure 115: Enter Lat/Lon Window ........................164

Figure 116: Grid Coordinate Window.....................164

Figure 117: From Known Position Tab ..................165

Figure 118: Surveyed Point Window......................165

Figure 119: Local Point Window............................166

Figure 120: Base Station File Window...................166

Figure 121: TruBlu Baud Rate Setting...................168

Figure 122: Bluetooth Devices Window.................169

Figure 123: Verification of TruBlu Connection.......170

Figure 124: Survey Menu – Log Raw GPS............171

Figure 125: NavCom Setup Window......................172

Figure 126: Files on Receiver Window..................173

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LAND-PAK™ User Guide – Rev. C

List of Tables

Table 1: Radio Modem LED Indications.................. 24

Table 2: Base Transit Case Parts List..................... 36

Table 3: Base Bag Parts List................................... 38

Table 4: Rover Transit Case Parts List....................39

Table 5: Rover Bag Parts List..................................41

Table 6: Office Supplies Transit Case Parts List..... 42

Table 7: Sensor Battery Charger LEDs................... 46

Table 8: Bag Battery Charger LEDs........................ 49

Table 9: Rover Radio Modem Battery LED.............51

Table 10: Radio Modem Soft Key Functions........... 61

Table 11: FEC Signal Thresholds............................71

Table 12: SurvCE Window Icons.............................90

Table 13: Store Points Interface Icons .................. 124

Table 14: Base Transit Case Parts List................. 154

Table 15: Base Bag Parts List............................... 156

Table 16: Rover Transit Case Parts List................157

Table 17: Rover Bag Parts List..............................159

Table 18: Office Supplies Transit Case Parts List. 160

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LAND-PAK™ User Guide – Rev. C

Notices

LAND-PAK™
All-in-One RTK Land Survey Solution User Guide
P/N 96-310030-3001
Revision C
February 2008

Serial Number:

Date Delivered:

Purchased From:

Copyright

© 2008 by NavCom Technology, Inc.
All rights reserved. No part of this work or the

computer program(s) described herein may be
reproduced, stored, or transmitted by any means,
without the expressed written consent of the copyright
holders. Translation in any language is prohibited
without the expressed written consent of the copyright
holders.

Trademarks

‘find your way’, ‘NavCom Globe’ and ‘NAVCOM
TECHNOLOGY’ logos are trademarks of NavCom
Technology, Inc. StarFire™ is a registered trademark
of Deere & Company. All other product and brand
names are trademarks or registered trademarks of
their respective holders.

ix

LAND-PAK™ User Guide – Rev. C

FCC Notice

The NavCom manufactured products comply 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.

The NavCom manufactured products have been
tested in accordance with FCC regulations for
electromagnetic interference. This does not
guarantee non-interference with other equipment.
Additionally, the products may be adversely affected
by nearby sources of electromagnetic radiation.

The Global Positioning System is under the control of
the United States Air Force. Operation of the GPS
satellites may be changed at any time and without
warning.

The FCC compliance of other components within this
system can be found inside the respective user
guides or by contacting the manufacturer directly.

User Notice

NavCom Technology, Inc. shall not be responsible for
any inaccuracies, errors, or omissions in information
contained herein, including, but not limited to,
information obtained from third party sources, such as
publications of other companies, the press, or
competitive data organizations.

This publication is made available on an “as is” basis
and NavCom Technology, Inc. specifically disclaims
all associated warranties, whether express or implied.
In no event will NavCom Technology, Inc. be liable for

x

LAND-PAK™ User Guide – Rev. C

direct, indirect, special, incidental, or consequential
damages in connection with the use of or reliance on
the material contained in this publication, even if
advised of the possibility of such damages. NavCom
Technology, Inc. reserves the right to make
improvements or changes to this publication and the
products and services herein described at any time,
without notice or obligation.

Limited Warranty

NavCom Technology, Inc., warrants that its products
will be free from defects in workmanship at the time of
delivery. Under this limited warranty, parts found to
be defective or defects in workmanship will be
repaired or replaced at the discretion of NavCom
Technology, Inc., at no cost to the Buyer, provided
that the Buyer returns the defective product to
NavCom Technology, Inc. in the original supplied
packaging and pays all transportation charges,
duties, and taxes associated with the return of the
product. Parts replaced during the warranty period
do not extend the period of the basic limited warranty.

This provision does not extend to any NavCom
Technology, Inc. products, which have been
subjected to misuse, accident or improper installation,
maintenance or application, nor does it extend to
products repaired or altered outside the NavCom
Technology, Inc. production facility unless authorized
in writing by NavCom Technology, Inc.

This provision is expressly accepted by the buyer in
lieu of any or all other agreements, statements or
representations, expressed or implied, in fact or in
law, including the implied warranties of
merchantability and fitness for a particular purpose
and of all duties or liabilities of NavCom Technology,
Inc. To the buyer arising out of the use of the goods,
and no agreement or understanding varying or

xi

LAND-PAK™ User Guide – Rev. C

extending the same will be binding upon NavCom
Technology, Inc. unless in writing, signed by a duly­authorized officer of NavCom Technology, Inc.

This limited warranty period is one (1) year from date
of purchase.

StarFire™ Licensing

The StarFire™ signal requires a subscription that
must be purchased in order to access the service.
Licenses are non-transferable, and are subject to the
terms of the StarFire™ Signal License agreement.
For further details on the StarFire™ Signal Network,
its capabilities, terms and conditions visit

www.navcomtech.com
[e-mail]

or send an email inquiry to

USG FAR

Technical Data Declaration (Jan 1997)
The Contractor, NavCom Technology, Inc., hereby

declares that, to the best of its knowledge and belief,
the technical data delivered herewith under
Government contract (and subcontracts, if
appropriate) are complete, accurate, and comply with
the requirements of the contract concerning such
technical data

Global Positioning System

Selective availability (S/A code) was disabled on 02
May 2000 at 04:05 UTC. The United States
government has stated that present GPS users use
the available signals at their own risk. The US
Government may at any time end or change
operation of these satellites without warning.

The U.S. Department of Commerce Limits
Requirements state that all exportable GPS products

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LAND-PAK™ User Guide – Rev. C

contain performance limitations so that they cannot
be used to threaten the security of the United States.

Access to satellite measurements and navigation
results will be limited from display and recordable
output when predetermined values of velocity and
altitude are exceeded. These threshold values are far
in excess of the normal and expected operational
parameters of the SF-2040 GPS Sensor.

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LAND-PAK™ User Guide – Rev. C

Revision History

Rev A (Sep. 2007) Initial release

Update Satel radio configuration

settings
Added Signal Threshold

Rev B (Dec. 2007)

Rev C (Feb. 2008)

Added Address Settings
Added Handshaking

Updated FEC modes
Added SL-Commands

New Carlson Explorer Universal
Battery Charger

Updated P/N for Charger Kit
Revised Battery Charging

Instructions
Added updated photo of

LM & 869 Office Supplies
which shows new charger

Added the option of a 220V
Battery Charger for the Satel
3ASd Radio Modem Battery
(LM & 869)

Added MSAS & GAGAN to
Related Standards

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LAND-PAK™ User Guide – Rev. C

Use of this Document

This User Guide is intended to be used by someone
familiar with the concepts of GPS and satellite
surveying equipment.

 Note indicates additional information

to make better use of the product.

This symbol means Reader Be

Careful. Indicates a caution, care,
and/or safety situation. The user might
do something that could result in
equipment damage or loss of data.

This symbol means Danger. The user

is in a situation that could cause bodily
injury. Before working on any
equipment, be aware of the hazards
involved with electrical and RF circuitry
and be familiar with standard practices
for preventing accidents.

Revisions to this User Guide can be obtained in a
digital format from

http://www.navcomtech.com/Support/

Related Documents

StarUtil User Guide P/N 96-310008-3001

Describes the operation and use of NavCom’s
Windows based control program (included on CD)

xv

LAND-PAK™ User Guide – Rev. C

Technical Reference Manual P/N 96-3120001-3001

Describes the control and output data message
formats utilized by this instrument (for customer
programming purposes; included on CD)

RINEXUtil User Guide P/N 96-310021-2101

Describes the conversion program used for NavCom
proprietary output data message formats to RINEX
ver 2.10 observation and navigation files (for
customer programming purposes; included on CD)

Integrators Toolkit P/N 97-310020-3001

Provides additional instruction and tools for
developing control programs for this instrument (not
included in the packaging material; contact

http://www.navcomtech.com/Support/

for a copy)

NavCom Release Notes

Describes software updates for NavCom products.
Current and archived Release Notes are available on
the NavCom web site:

http://www.navcomtech.com/Support/DownloadCente
r.cfm?category=releasenotes.

NavCom Customer Support provides software
updates described in the Release Notes. Submit a
request for software updates via the Request Support
web page.

xvi

LAND-PAK™ User Guide – Rev. C

Related Standards

ICD-GPS-200

NAVSTAR GPS Space Segment / Navigation User
Interfaces Standard. ARINC Research Corporation;
2250 E. Imperial Highway; El Segundo, California
90245

RTCM-SC-104

Recommended Standards For Differential GNSS
Service. Radio Technical Commission For Maritime
Services; 1800 N. Kent St, Suite 1060; Arlington,
Virginia 22209

CMR, CMR+

Compact Measurement Record; Trimble Navigation
Limited; 935 Stewart Drive; Sunnyvale, CA 94085

NMEA-0183

National Marine Electronics Association Standard For
Interfacing Marine Electronic Devices. NMEA
National Office; 7 Riggs Avenue; Severna Park,
Maryland 21146

Publicly-Operated SBAS Signals

RTCA/DO-229D

The Radio Technical Commission for Aeronautics
(RTCA) develops consensus-based
recommendations regarding communications,
navigation, surveillance, and air traffic management
(CNS/ATM) system issues.

RTCA. 1828 L Street, NW, Suite 805, Washington,
DC 20036.

xvii

LAND-PAK™ User Guide – Rev. C

These organizations implement the RTCA/DO-229D
standard set by RTCA:

WAAS (Wide Area Augmentation System)

U.S. Department of Transportation. Federal Aviation
Administration. 800 Independence Ave, SW,
Washington, DC 20591

EGNOS (European Geostationary Navigation Overlay Service)

European Space Agency. 8, 10 rue Mario-Nikis,
F-75738 Paris Cedex 15, France.

MSAS (MTSAT Satellite-based Augmentation System)

Japan Civil Aviation Bureau. Ministry of Transport.
Kasumigaseki 2-1-3, Chiyoda-ku, Tokyo 100, Japan.

GAGAN (GPS Aided Geo Augmented Navigation)

Indian Space Research Organization. Antariksh
Bhavan, New Bel Road, Bangalore - 560 094, India.

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LAND-PAK™ User Guide – Rev. C

Chapter 1 ..............................Introduction

The LAND-PAK™ is a complete NavCom-qualified
end-user system designed for land survey
applications. The LAND-PAK pairs NavCom products
with complimentary technologies and solutions,
providing land surveyors a complete turn-key system
that does everything from field data collection to office
processing.

Unique Features

The LAND-PAK has many unique features:

 A Solution that Works

The LAND-PAK’s controller solution from Carlson
provides cutting edge hardware with the most popular
and easy to use software on the market, SurvCE.
Satel’s powerful radio modems give the LAND-PAK a
wider coverage area, allowing longer distances
between stations.

 Higher accuracy and reliability

With Satel’s radio modems and the RTK option on the
SF-2040 receivers, the LAND-PAK is capable of
performing centimeter accurate RTK surveys. The
RTK algorithm developed by NavCom provides fast
initialization and the NCT ultra compact binary data
format for RTK ensures robust data throughput. The
sensor can utilize NCT, RTCM, CMR and CMR+ data
streams from other base stations to minimize base
rover separation and allow for flexibility with pre­existing GPS survey systems.

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LAND-PAK™ User Guide – Rev. C

1

 GPS Performance

The NavCom SF-2040 receivers use the NavCom
NCT-2100D GPS Engine including the fourth
generation Touchstone™ ASIC family, of which more
than 40,000 are in use worldwide. Incorporated are
NavCom patented interference suppression and
multi-path mitigation, a 5Hz raw data rate (up to 50Hz
optional), and 5Hz geodetic-quality positioning (up to
25Hz optional).

 RTK Extend™

1

RTK Extend™ enables continuous RTK-level
positioning accuracy during radio communication
outages by utilizing NavCom’s global StarFire™
corrections.

Traditionally, when an RTK rover loses
communication with the base station, it is unable to
continue to provide position updates for more than a
few seconds, resulting in user down-time and
reduced productivity. With RTK Extend™, a NavCom
StarFire™ receiver operating in RTK mode, can
transition to RTK Extend™ mode and maintain
centimeter level positioning during communication
loss for up to 15 minutes. RTK Extend™ allows more
efficient and uninterrupted work, enabling focused
concentration on the work rather than the tools.

 A complete portable system

The LAND-PAK is a highly integrated solution
designed for productivity with minimal setup time and
maximum portability. Covering the entire land survey
process, it contains a complete base and rover
system for field data collection. Optional software for
data analysis and processing is also available.

Separate Software Option Required

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LAND-PAK™ User Guide – Rev. C

Typical Applications

9 Cadastral (Boundary) Surveys
9 Geodetic Surveys (Control) Surveys
9 Topographic Surveys
9 Stake-Out Surveys
9 As-Built Surveys

System Description

NavCom SF-2040 GPS Sensors

The LAND-PAK includes
the NavCom SF-2040
Sensor for both the base
station and rover. The SF-2040 is a 24-channel dual
frequency precision GPS sensor with two additional
channels for receiving Satellite Based Augmentation
System (SBAS) signals and an L-Band demodulator
for reception of NavCom’s StarFire™ Network
correction service, for autonomous decimeter-level
position accuracy, anywhere in the world, anytime.
The sensor can output proprietary raw data as fast as
50Hz (optional) and Position Velocity Time (PVT)
data as fast as 25Hz (optional) through two 115kbps
serial ports with less than 20ms latency.

The SF-2040 has a built-in L-Band demodulator for
reception of NavCom’s StarFire™ Network correction
service. The sensor simultaneously accepts
additional DGPS corrections (WAAS/EGNOS)
assuring seamless position output.

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LAND-PAK™ User Guide – Rev. C

 Integrated GPS and L-Band Antenna

The all-in-one housing incorporates our compact GPS
antenna with excellent tracking performance and a
stable phase center for GPS L1 and L2. The robust
assembly features a standard 5/8” BSW thread for
mounting directly to a surveyor’s pole, tripod, or mast.

 Communications

The SF-2040 provides two 7-pin female LEMO
connector communication ports, labeled COM1 and
COM2, located at the bottom front of the sensor (as
shown in Figure 1). Each conforms to the EIA RS232
standard with data rates from 1.2 to 115.2kbps.

COM1 is the control port, and COM2 is the data port
(see Figure 4 for a schematic of the LAND-PAK
interfacing).

2-22

Figure 1: SF-2040, Viewed From Bottom

LAND-PAK™ User Guide – Rev. C

 Refer to the supplied SF-2040 GPS

Product User Guide for further

information about the SF-2040.

Base Station and Rover Radio Modems

The LAND-PAK includes a
base station and a rover radio
modem.

 Refer to The LAND-

PAK Configurations

section below for the
specific radio modems used in the
current LAND-PAK configurations.

Set the radio modems only to a

licensed frequency. It must comply

with local regulatory authorities.

 User Interface

The LAND-PAK radio modems are configurable via
SurvCE software on the Explorer 600+ controller.

Additionally, the radio modems are configurable
without any external device via the integrated LCD
display and four soft keys. The soft keys access on­screen menus.

During operation, the LCD display shows RF
frequency, battery status, data port speed, and signal
strength (in dBm).

 LED Indicators

Figure 2: Radio Modem LED Indicators

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LAND-PAK™ User Guide – Rev. C

The LED indicators provide a quick status view of
both the radio channel and the serial interface with
the GPS.

The CTS LED illuminates when the radio modems
are powered on. Refer to Table 1 for LED indications.

Table 1: Radio Modem LED Indications

LED

RTS
CTS

TD

RD

CD

Description

Request To Send
Clear To Send

Transmit Data
(Input of the data
to be transmitted
from the DTE to
the radio modem.)

Receive Data
(Output of the

data received
from the radio
modem to the
DTE.)

Carrier Detect
(radio status)

Active Status

Red
Red

Red = data transmit
Green = test Tx active

Red

Red = transmission
Orange = noise
Green = reception

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LAND-PAK™ User Guide – Rev. C

Explorer 600+ Data Collector

The Carlson Explorer 600+ high-speed (624 MHz),
hand-held data collector features a liquid crystal 320
x 240 QVGA-TFT color, sunlight-readable display
with a touch screen and LED backlight. It is equipped
with 128MB of SDRAM and 512MB of internal
compact flash memory.

Carlson SurvCE data collection software for land
surveying applications is installed on the Windows CE
.NET Professional operating system.

The supplied rechargeable Nickel Metal Hydride
(NiMH) battery pack can provide up to twelve hours of
operating time on a full charge (depending on power
management and use).

The Explorer 600+ provides WiFi and Bluetooth, a
USB port and a Serial port, and a Compact Flash
(CF) slot.

The weather resistant shell, rated to withstand wind­driven rain, has a keyboard designed for surveyors
and six LED Indicators, including a charge/low battery
indicator. The Explorer 600+ comes with a cradle for
attachment to the rover pole.

 Refer to the supplied Carlson Explorer

600+ user manual for further

information.

Always use the supplied stylus to

interact with the Explorer 600+ touch

screen. Never use sharp objects. Use

the supplied screen protectors to

increase the life of the touch screen.

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LAND-PAK™ User Guide – Rev. C

 User Interface

Figure 3: Carlson Explorer 600+ User Interface

The Carlson Explorer 600+ has a 53-key keypad. It
provides the functionality of a full-sized keyboard
through the use of multi-functional modifier keys. Four
LEDs located to the left and right of the power button
indicate the active state of the modifier keys.

9 2nd Key: Press to

access the
characters and
functions in the
blue bottom half of
the keys.

9 Alt Key: Press to

access the orange
letter hot keys
below the Alpha Letters A thru Z. For detailed
information about the hot keys, refer to the
supplied Carlson SurvCE manual.

 The functions of the Fn key and the 1

are not applicable to the LAND-PAK.

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st

LED