Trimble Outdoors SPSX51 User Manual

user guide

Trimble® SPSx51

Modular GPS Receivers

USER GUIDE

Trimble® SPSx51 Modular GPS Receivers

Version 3.60
Revision A
January 2008

F

Corporate Office

Trimble Navigat ion Limited
935 Stewart Drive

Sunnyvale, CA 94085
USA

www.trimble.com

Construction Business Area

Trimble Navigat ion Limited
Construction Business Area
5475 Kellenburger Road
Dayton, Ohio 45424-1099
USA

800-538-7800 (toll free in USA)
[phone] Phone
[phone] Fax

www.trimble.com

E-mail: [e-mail]

Legal Notices

© 2006–2007, Trimble Navigation Limited. All rights reserved.
Trimble, and the Globe & Triangle logo are trademarks of Trimble

Navigation Limited, registered in the United States Patent and
Trademark Office and in other countries. AutoBase, CMR, CMR+,
HYDROpro, Maxwell, Micro-Centered, TGO, SiteNet, TRIMMARK,
TRIMTALK, TSC2, TSCe, VRS, Zephyr, and Zephyr Geodetic are
trademarks of Trimble Navigation Limited.
The Bluetooth word mark and logos are owned by the Bluetooth
SIG, Inc. and any use of such marks by Trimble Navigation Limited
is under license.
Microsoft, Windows, and Windows NT are either registered
trademarks or trademarks of Microsoft Corporation in the United
States and/or other countries.
All other trademarks are the property of their respective owners.

Release Notice

This is the January 2008 release (Revision A) of the SPSx51 Modular
GPS Receivers User Guide.

firmware.

Product Limited Warranty Information

For applicable product Limited Warranty information, please refer
to the Limited Warranty Card included with this Trimble product,
or consult your local Trimble authorized dealer.

Notices

Class B Statement – Notice to Users. This equipment has been
tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC rules and Part 90. These
limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment
generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause
harmful interference to radio communication. However, there is no
guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to
radio or television reception, which can be determined by turning
the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures:
– Reorient or relocate the receiving antenna.
– Increase the separation between the equipment and the receiver.
– Connect the equipment into an outlet on a circuit different from

that to which the receiver is connected.

– Consult the dealer or an experienced radio/TV technician for

help.
Changes and modifications not expressly approved by the
manufacturer or registrant of this equipment can void your

authority to operate this equipment under Federal
Communications Commission rules.

Canada

This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme

NMB-003 du Canada.
This apparatus complies with Canadian RSS-GEN, RSS-310,

RSS-210, and RSS-119.
Cet appareil est conforme à la norme CNR-GEN, CNR-310,
CNR-210, et CNR-119 du Canada.

It applies to version 3.60 of the receiver

Europe

This product (the SPSx51 Modular GPS receiver) is
intended to be used in all EU member countries, Norway,
and Switzerland.

This product has been tested and found to comply with the
requirements for a Class B device pursuant to European Council
Directive 89/336/EEC on EMC, thereby satisfying the requirements
for CE Marking and sale within the European Economic Area (EEA).
Contains Bluetooth radio module PBA 31308. These requirements
are designed to provide reasonable protection against harmful
interference when the equipment is operated in a residential or
commercial environment. The 450 MHZ (PMR) bands and 2.4 GHz
are non-harmonized throughout Europe.

Australia and New Zealand

This product conforms with the regulatory requirements of
the Australian Communications Authority (ACA) EMC
framework, thus satisfying the requirements for C-Tick
Marking and sale within Australia and New Zealand.

Taiwan – Battery Recycling Requirements

The product contains a removable Lithium-ion battery.
Taiwanese regulations require that waste batteries are
recycled.

廢電池請回收

Notice to Our European Union Customers

Directive 1999/5/EC

Hereby, Trimble Navigation, declares that the SPSx50 and SPSx51
GPS receivers are in compliance with the essential requirements
and other relevant provisions of Directive 1999/5/EC.

Restriction of Use of Certain Hazardous Substances
in Electrical and Electronic Equipment (RoHS)

The following statement only applies to the SPSx51 Modular GPS
receiver (no internal radio model and 450 MHz internal radio
models only)

This Trimble product complies in all material respects with
DIRECTIVE 2002/95/EC OF THE EUROPEAN PARLIAMENT AND
OF THE COUNCIL of 27 January 2003 on the restriction of the use of
certain hazardous substances in electrical and electronic
equipment (RoHS Directive) and Amendment 2005/618/EC filed
under C(2005) 3143, with exemptions for lead in solder pursuant to
Paragraph 7 of the Annex to the RoHS Directive applied.

Waste Electrical and Electronic Equipment (WEEE)

For product recycling instructions and more information, please go
to www.trimble.com/ev.shtml.

Recycling in Europe: To recycle Trimble WEEE (Waste
Electrical and Electronic Equipment, products that run on
electrical power.), Call [phone], and ask for the
"WEEE Associate". Or, mail a request for recycling
instructions to:
Tri mble Euro pe BV
c/o Menlo Worldwide Logistics
Meerheide 45
5521 DZ Eersel, NL

Declaration of Conformity

We, Trimbl e Navi gatio n Limited ,

935 Stewart Drive

PO Box 3642

Sunnyvale, CA 94088-3642

United States

[phone]

declare under sole responsibility that the products:

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.

SPSx51 Modular GPS receiver

comply with Part 15 of FCC Rules.

2 SPSx51 Modular GPS Receivers User Guide

Safety Information

Before you use your Trimble® SPS GPS receiver, make sure that you have read and
understood all safety requirements.

Regulations and safety

The receivers contain an internal radio-modem and can send signals through
Bluetooth
Regulations regarding the use of the 450 MHz radio-modems vary greatly from country
to country. In some countries, the unit can be used without obtaining an end-user
license. Other countries require end-user licensing. For licensing information, consult
your local Trimble dealer. Bluetooth and 900 MHz radio-modems operate in
license-free bands.

Before operating an SPSx51 Modular GPS receiver, determine if authorization or a
license to operate the unit is required in your country. It is the responsibility of the end
user to obtain an operator’s permit or license for the receiver for the location or
country of use.

For FCC regulations, see Notices, page 2.

Type approval

Type approval, or acceptance, covers technical parameters of the equipment related to
emissions that can cause interference. Type approval is granted to the manufacturer of
the transmission equipment, independent from the operation or licensing of the units.
Some countries have unique technical requirements for operation in particular
radio-modem frequency bands. To comply with those requirements, Trimble may have
modified your equipment to be granted Type approval. Unauthorized modification of
the units voids the Type approval, the warranty, and the operational license of the
equipment.

®

wireless technology or through an external data communications radio.

Exposure to radio frequency radiation

For 450 MHz radio

Safety. Exposure to RF energy is an important safety consideration. The FCC has
adopted a safety standard for human exposure to radio frequency electromagnetic
energy emitted by FCC regulated equipment as a result of its actions in General Docket
79-144 on March 13, 1986.

Proper use of this radio modem results in exposure below government limits. The
following precautions are recommended:

• DO NOT operate the transmitter when someone is within 20 cm (7.8 inches) of

the antenna.

• DO NOT operate the transmitter unless all RF connectors are secure and any

open connectors are properly terminated.

• DO NOT operate the equipment near electrical blasting caps or in an explosive

atmosphere.

SPSx51 Modular GPS Receivers User Guide 3

Safety Information

• All equipment must be properly grounded according to Trimble installation

instructions for safe operation.

• All equipment should be serviced only by a qualified technician.

For license-free 900 MHz radio

C

CAUTION – For your own safety, and in terms of the RF exposure requirements of the

FCC, always observe the precautions listed here.

• DO NOT operate the transmitter when someone is within 20 cm (7.8 inches) of

the antenna.

• Do not co-locate the antenna with any other transmitting device.

For Bluetooth radio

The radiated output power of the internal Bluetooth wireless radio is far below the
FCC radio frequency exposure limits. Nevertheless, the wireless radio shall be used in
such a manner that the Trimble receiver is 20 cm or further from the human body. The
internal wireless radio operates within guidelines found in radio frequency safety
standards and recommendations, which reflect the consensus of the scientific
community. Trimble therefore believes that the internal wireless radio is safe for use by
consumers. The level of energy emitted is far less than the electromagnetic energy
emitted by wireless devices such as mobile phones. However, the use of wireless radios
may be restricted in some situations or environments, such as on aircraft. If you are
unsure of restrictions, you are encouraged to ask for authorization before turning on
the wireless radio.

1

Installing antennas

C

1.

900 MHz radios are not used in Europe.

4 SPSx51 Modular GPS Receivers User Guide

CAUTION – For your own safety, and in terms of the RF exposure requirements of the

FCC, always observe these precautions:
– Always maintain a minimum separation distance of 20 cm (7.8 inches) between yourself
and the radiating antenna.
– Do not co-locate the antenna with any other transmitting device.

This device has been designed to operate with the antennas listed below. Antennas not
included in this list are strictly prohibited for use with this device. The required
antenna impedance is 50 ohms.

The antennas that can be used (country dependent) with the 450 MHz radio are 0 dBi
and 5 dBi whip antennas. The antennas that can be used (country dependent) with the
900 MHz radio are 0 dBi, 3 dBi, and 5 dBi whip antennas.

To reduce potential radio interference to other users, the antenna type and its gain
should be so chosen so that the equivalent isotropically radiated power (e.i.r.p.) is not
more than that permitted for successful communication.

Battery safety

Safety Information

C

C

C

WARNING – Do not damage the rechargeable Lithium-ion battery. A damaged battery

can cause an explosion or fire, and can result in personal injury and/or property damage.
To prevent injury or damage:
– Do not use or charge the battery if it appears to be damaged. Signs of damage include,
but are not limited to, discoloration, warping, and leaking battery fluid.
– Do not expose the battery to fire, high temperature, or direct sunlight.
– Do not immerse the battery in water.
– Do not use or store the battery inside a vehicle during hot weather.
– Do not drop or puncture the battery.
– Do not open the battery or short-circuit its contacts.

WARNING – Avoid contact with the rechargeable Lithium-ion battery if it appears to be

leaking. Battery fluid is corrosive, and contact with it can result in personal injury and/or
property damage.
To prevent injury or damage:
– If the battery leaks, avoid contact with the battery fluid.
– If battery fluid gets into your eyes, immediately rinse your eyes with clean water and
seek medical attention. Do not rub your eyes!
– If battery fluid gets onto your skin or clothing, immediately use clean water to wash off
the battery fluid.

WARNING – Charge and use the rechargeable Lithium-ion battery only in strict

accordance with the instructions. Charging or using the battery in unauthorized
equipment can cause an explosion or fire, and can result in personal injury and/or
equipment damage.
To prevent injury or damage:
– Do not charge or use the battery if it appears to be damaged or leaking.
– Charge the Lithium-ion battery only in a Trimble product that is specified to charge it.
Be sure to follow all instructions that are provided with the battery charger.
– Discontinue charging a battery that gives off extreme heat or a burning odor.
– Use the battery only in Trimble equipment that is specified to use it.
– Use the battery only for its intended use and according to the instructions in the product
documentation.

SPSx51 Modular GPS Receivers User Guide 5

Safety Information

6 SPSx51 Modular GPS Receivers User Guide

Contents

Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Regulations and safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Type approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Exposure to radio frequency radiation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

For 450 MHz radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

For license-free 900 MHz radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

For Bluetooth radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Installing antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Battery safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

About the SPSx51 receivers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

SPS551 GPS receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

SPS551H GPS receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

SPS651 Location GPS receiver with precise vertical accuracy . . . . . . . . . . . . . . . . . 13

SPS751 GPS receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

SPS851 GPS receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Related information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Technical support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Your comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2 Features and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

SPS551 features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

SPS551 Receiver optional features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

SPS551H features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

SPS651 features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

SPS651 Receiver optional features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

SPS751 features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

SPS751 standard features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

SPS751 Basic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

SPS751 Max . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

SPS851 features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Base station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Rover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Use and care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

COCOM limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Keypad and display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Rear connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3 Batteries and Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

External power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Battery safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

SPSx51 Modular GPS Receivers User Guide 7

Contents

Battery performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Charging the Lithium-ion battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Storing the Lithium-ion battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Using the Lithium-ion battery as a Universal Power Supply (UPS) . . . . . . . . . . . . . . . . . . 30

Removing the rechargeable Lithium-ion battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

4 Setup Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Base station operation guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Base station components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Base station setup guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Permanent installation antenna cabling for the SPSx51 Modular GPS receiver . . . . . . 35

Rover operation guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Rover receiver components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Rover receiver setup guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

5 Setting up the Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Connecting the receiver to external devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Trimble controller with SCS900 Site Controller software . . . . . . . . . . . . . . . . . . . . 42

External radio-modems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Common ways to set up a base station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Setting up a base station for permanent or semi-permanent installation. . . . . . . . . . 43

Setting up a base station for daily site use: T-Bar . . . . . . . . . . . . . . . . . . . . . . . . . 45

Setting up a mobile base station: Tripod and fixed height tripod . . . . . . . . . . . . . . . 46

Common ways to set up a rover receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Setting up the rover receiver on a jobsite vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 49

Setting up the rover receiver on a rod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Setting up a rover receiver on a belt or in a backpack . . . . . . . . . . . . . . . . . . . . . . 51

Setting up a pair of GPS receivers to provide heading . . . . . . . . . . . . . . . . . . . . . . . . . . 51

The Moving Baseline RTK positioning technique. . . . . . . . . . . . . . . . . . . . . . . . . 52

Mounting a pair of GPS receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Assembling the receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Installing the receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Mounting the antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Configuring the receiver pair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Interfacing using the NMEA protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Heading output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

6 Configuring the Receiver Using the Keypad and Display . . . . . . . . . . 61

Button functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Power button operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Home screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Status screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Configuring the receiver as a base receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Configuring the receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Configuring the receiver as a rover receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

8 SPSx51 Modular GPS Receivers User Guide

Contents

Configuring the receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Configuring system settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Turning off AutoBase technology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Managing application files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

7 Configuring the Receiver Settings . . . . . . . . . . . . . . . . . . . . . . . 71

Using the SCS900 Site Controller software to configure the base station, the rover, and

the radios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Configuring the receiver to log data for postprocessing . . . . . . . . . . . . . . . . . . . . . . . . . 73

Configuring the receiver to use specific settings when it is turned on . . . . . . . . . . . . . . . . 73

Configuring Ethernet settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Configuring the receiver using a web browser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Supported browsers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Connecting to the receiver using a web browser: . . . . . . . . . . . . . . . . . . . . . . . . . 77

Connecting to the receiver using a web browser and Bluetooth wireless technology . . 78

Creating a new connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Changing the settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

8 Automatically Setting up a Mobile Base Station Using AutoBase

Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

AutoBase Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100

Working with AutoBase technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Scenario One: First visit to a site with AutoBase Warning turned off . . . . . . . . . . . .100

Scenario Two: First visit to a site with AutoBase Warning turned on . . . . . . . . . . . .101

Scenario Three: Repeat visit to a site with AutoBase Warning turned off. . . . . . . . . .101

Scenario Four: Repeat visit to a site with AutoBase Warning turned on . . . . . . . . . .102

The AutoBase process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103

9 Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Default receiver settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

Resetting the receiver to factory defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

Data Logging option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

Logging data after a power loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107

10 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

General specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110

Physical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110

Performance specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111

Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112

Communication specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113

GPS satellite signal tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Integrated radio options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114

Variable configuration options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115

Upgrading the receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115

SPSx51 Modular GPS Receivers User Guide 9

Contents

A NMEA-0183 Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

NMEA-0183 message overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118

Common message elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119

Message values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119

NMEA messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119

B GSOF Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Supported message types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136

General Serial Output Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136

Reading binary values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

INTEGER data types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137

GSOF message definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .139

TIME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .140

LLH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .140

ECEF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141

ECEF DELTA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141

NEU DELTA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141

Velocity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

PDOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .143

SIGMA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

SV Brief . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

SV Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .144

UTC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145

Batt/Mem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .146

Attitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .146

BASE POSITION AND QUALITY INDICATOR . . . . . . . . . . . . . . . . . . . . . . . . . .147

Flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .148

C Adding Internal Radio Frequencies . . . . . . . . . . . . . . . . . . . . . 151

Adding receive frequencies for the 450 MHz internal radio. . . . . . . . . . . . . . . . . . . . . . .152

Setting UHF reception radio frequencies using the web interface. . . . . . . . . . . . . . . . . . .153

D Transmitting Corrections . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

Scenario 1: Outputting corrections using an HPB450 radio-modem . . . . . . . . . . . . . . . . .156

Solution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .156

Scenario 2: Outputting corrections using a TRIMMARK 3 radio. . . . . . . . . . . . . . . . . . . .157

Solution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .157

Scenario 3: Outputting corrections from a SNB900 radio to an HPB450 or

TRIMMARK 3 radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .158

Solution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .158

E Real-Time Data and Services . . . . . . . . . . . . . . . . . . . . . . . . . 159

RT17 Streamed Data service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .160

Using the keypad and display to configure RT17 outputs. . . . . . . . . . . . . . . . . . . .160

Using the web interface to configure RT17 outputs . . . . . . . . . . . . . . . . . . . . . . .160

10 SPSx51 Modular GPS Receivers User Guide

Contents

Login authentication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .160

F Upgrading the Receiver Firmware . . . . . . . . . . . . . . . . . . . . . . 161

The WinFlash utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

Installing the WinFlash utility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .162

Upgrading the receiver firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .162

Forcing the receiver into Monitor mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .163

G Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

Receiver issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

H Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

Back view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .170

Side view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Bottom view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .171

I Receiver Connector Pinout Information. . . . . . . . . . . . . . . . . . . 173

Lemo connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .174

Modem multi-function port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

1PPS and ASCII time tag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .176

ASCII time tag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .177

26-Pin D-sub connector wiring chart (P/N 60789-00) . . . . . . . . . . . . . . . . . . . . . . . . . .178

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

SPSx51 Modular GPS Receivers User Guide 11

Contents

12 SPSx51 Modular GPS Receivers User Guide

CHAPTER

1

Introduction 1

Welcome to the SPSx51 Modular GPS Receivers
User Guide. This manual describes how to set up
and use the Trimble
receivers.

About the SPSx51 receivers

The SPSx51 Modular GPS receiver family
comprises the following receivers:

• SPS551

• SPS551H

• SPS651

• SPS751 Basic base

• SPS751 Basic rover

• SPS751 Max

• SPS851

®

SPSx51 Modular GPS

correction services. The SPS551 is ideal for
mobile applications on marine vessels and site
vehicles where Real-Time Kinematic (RTK)
accuracy is not needed. The SPS551 can be used
with the SPS551H GPS receiver to provide both
position and precise heading solutions for
marine applications. The SPS551 can be
upgraded to use GLONASS signals and to use
GPS L2C signals.

SPS551H GPS receiver

The Trimble SPS551H is an add-on receiver that
can be combined with the SPS551, SPS751 Max,
or SPS851 Extreme to provide a precise heading
capability using Trimble moving base technology.

The SPS551H is also available with GLONASS to
provide a robust heading solution in a hostile
environment.

SPS651 Location GPS receiver with precise vertical accuracy

SPS551 GPS receiver

The Trimble SPS551 is a dual-frequency Location
GPS receiver, which provides up to decimeter
accuracy depending on the augmentation used.
The SPS551 provides decimeter precision when
used in Location RTK mode with RTK
corrections through the internal radio or
Internet. The SPS551 can operate as a DGPS
reference station or as a DGPS rover receiver, and
can use Satellite Based Augmentation Systems
(SBAS). The receiver can also function as a rover
receiver that uses OmniSTAR XP, HP, or VBS

The SPS651 is a Location GPS receiver with
precise vertical and decimeter horizontal
positioning. The receiver is part of the
vehicle-mounted Trimble Site Supervisor System
and used with the SCS900 Site Controller
Software Tablet Edition it is designed to provide
site supervisors with cost-effective real-time
positioning information.

The SPS651 can operate in all Location GPS
modes including SBAS, DGPS, OmniSTAR
(VBS/HP/XP services), and Location RTK mode.
It can be upgraded to use GLONASS signals and
to use GPS L2C signals.

SPSx51 Modular GPS Receivers User Guide 13

1 Introduction

SPS751 GPS receiver

The Trimble SPS751 is a dual-frequency GPS
receiver with the ability to receive OmniSTAR
corrections. The receiver is available in the
following configurations:

• SPS751 Basic base

• SPS751 Basic rover

• SPS751 Max

The SPS751 can be configured using the keypad
and display, a web browser, or the Trimble
SCS900 Site Controller software. The SPS751
makes it easy to set up a mobile base station or a
permanent base station for continuous
operation. The SPS751 is also an ideal mobile
receiver for semi-permanent mounting on
vehicles and marine vessels.

SPS851 GPS receiver

The Trimble SPS851 is a triple-frequency GPS
plus GLONASS receiver with the ability to receive
OmniSTAR corrections. The SPS851 can operate
as a base station or rover. The receiver can be
configured using the keypad and display, web
browser, or Trimble SCS900 Site Controller
software. The SPS851 makes it easy to set up a
mobile base station or a permanent base station
for continuous operation. The SPS851 is also an
ideal mobile receiver for semi-permanent
mounting on vehicles and marine vessels.

• Trimble training courses – Consider a

training course to help you use your GPS
system to its fullest potential. For more
information, go to the Trimble website at

www.trimble.com/training.html.

Technical support

If you have a problem and cannot find the
information you need in the product
documentation, contact your local dealer.
Alternatively, go to the Support area of the
Trimble website
(www.trimble.com/support.shtml). Select the
product you need information on. Product
updates, documentation, and any support issues
are available for download.

If you need to contact Trimble technical support,
complete the online inquiry form at

www.trimble.com/support_form.asp.

Your comments

Your feedback about the supporting
documentation helps us to improve it with each
revision. Email your comments to

[e-mail].

1

Related information

Sources of related information include the
following:

• Release notes – The release notes describe

new features of the product, information not
included in the manuals, and any changes to
the manuals. They are provided as a .pdf file
on the Trimble SPS GPS Receiver CD or you
can download them from the Trimble
website (www.trimble.com/support.shtml).

14 SPSx51 Modular GPS Receivers User Guide

CHAPTER

2

Features and Functions 2

In this chapter:

Q SPS551 features

Q SPS551H features

Q SPS651 features

Q SPS751 features

Q SPS851 features

Q Use and care

Q COCOM limits

Q Keypad and display

Q Rear connectors

Trimble SPSx51 Modular GPS receivers are ideal
for the following infrastructure development, site
development, and marine construction
applications:

• Mobile base station for RTK or DGPS

applications

• Permanent base station RTK or DGPS

applications (not available in the SPS551H)

• RTK rover on rod, backpack, site vehicle, or

marine vessel

• Site and marine location applications using

Location GPS augmentation including
OmniSTAR, Location RTK, SBAS, and DGPS
RTCM

You can use the receivers with the Trimble
SCS900 Site Controller software.

These receivers all feature a keypad and display
so you can configure the receiver without using a
controller or computer.

All the receivers can record GPS data to the
internal memory, and transfer the data over a
serial or Ethernet connection.

SPSx51 Modular GPS Receivers User Guide 15

2 Features and Functions

SPS551 features

The receiver provides the following features:

• Integrated GPS receiver and radio

• Location RTK capable – Location RTK precision of 10 cm horizontal and 10 cm

• Not upgradable to full RTK (SPS751 or SPS851)

• Optional 450 or 900 MHz internal radio

• 72-channel L1 C/A Code, L1/L2 Full Cycle Carrier. Upgradable to L2C and

• OmniSTAR XP/HP/VBS service capable

• 4-channel WAAS (Wide Area Augmentation System), EGNOS (European

• Long-life integrated battery, typically provides 12 hours as a rover with internal

vertical

GLONASS L1/L2 Full Cycle Carrier

Geo-Stationary Navigation System), and MSAS Satellite Based Augmentation
(SBAS) compatible

radio

• Configuration and monitoring interface through the following methods:

– Web interface

– Networked or peer-to-peer Ethernet

– Integrated display and keyboard

– Trimble SCS900 Site Controller Software Tablet Edition

• Integrated Bluetooth wireless technology for cable-free configuration and

operation with a laptop or controller

• Attached or external radio antenna for rover operation

• Small, lightweight design – 1.65 kg (3.64 lbs) receiver only, including the battery;

4 kg (8.82 lbs) complete system weight (rover including controller and rod)

• Vehicle and marine vessel mounting options for Supervisor and Dredging

applications

• Easy-to-use menu system for rapid configuration and status checking

• Rugged, weatherproof construction with an IP67 environmental rating

• –40 ×C to +65 ×C (–40 ×F to +149 ×F) operating temperature range

• 9.5 V to 28 V DC input power range, with over-voltage protection

• Capable of rover operation within a VRS (Virtual Reference Station) network

• Moving baseline and heading capability when combined with an appropriate

SPSx51, SPSx50, or SPS551H receiver

• RoHS compliant

16 SPSx51 Modular GPS Receivers User Guide

• Can be upgraded to receive GLONASS signals.

Features and Functions 2

Note – When the receiver is upgraded to GLONASS, the GA510 rover GPS antenna should
be replaced with the Zephyr

• 1 Pulse-per-second (1PPS) output

SPS551 Receiver optional features

• Internal 450 MHz (3 frequency bands) radio with transmit and receive capability

• Internal 900 MHz radio with transmit and receive capability

SPS551H features

The SPS551H receiver is an add-on receiver, which provides Precise GPS heading
capability when combined with another SPSx51 Modular GPS receiver (excluding the
SPS751 Basic base and or another SPS551H receiver). The SPS551H cannot be used
alone.

The SPS551H receiver provides the following features:

• Low-cost Precise GPS Heading add-on GPS receiver for the Trimble SPS551,

SPS751, or SPS851 receivers

• Connection to another GPS receiver through Bluetooth wireless technology or a

serial port

™

Model 2 antenna.

• 10 Hz heading update rate in NMEA 0183 and Trimble binary formats

• Configuration and heading on a two-line display

• Includes a GA510 rover or Zephyr Model 2 rover GPS antenna, mounting

bracket, and short interconnecting cable

• RoHS compliant

• Tracks up to 24 GPS satellites

• Can be upgraded to receive GLONASS signals

• 1 Pulse-per-second (1PPS) output

The receiver is ideal for projects that require the precise heading of a vessel or
structure.

SPS651 features

The receiver provides the following features:

• Integrated GPS receiver and radio

• Precise Vertical measurement when in Location RTK mode – Location RTK

precision of 10 cm horizontal and 2 cm vertical

SPSx51 Modular GPS Receivers User Guide 17

2 Features and Functions

• Not upgradable to full RTK (SPS751 or SPS851)

• Optional 450 or 900 MHz internal radio

• 72-channel L1 C/A Code, L1/L2 Full Cycle Carrier. Upgradable to L2C and

• OmniSTAR XP/HP/VBS service capable

• 4-channel WAAS (Wide Area Augmentation System), EGNOS (European

• Long-life integrated battery, typically provides 12 hours as a rover with internal

• Configuration and monitoring interface through the following methods:

GLONASS L1/L2 Full Cycle Carrier

Geo-Stationary Navigation System), and MSAS Satellite Based Augmentation
(SBAS) compatible

radio

– Web interface

– Networked or peer-to-peer Ethernet

– Integrated display and keyboard

– Trimble SCS900 Site Controller Software Tablet Edition

• Integrated Bluetooth wireless technology for cable-free configuration and

operation with a laptop or controller

• Attached or external radio antenna for rover operation

• Small, lightweight design – 1.65 kg (3.64 lbs) receiver only, including the battery;

4 kg (8.82 lbs) complete system weight (rover including controller and rod)

• Vehicle and marine vessel mounting options for Supervisor and Dredging

applications

• Easy-to-use menu system for rapid configuration and status checking

• Rugged, weatherproof construction with an IP67 environmental rating

• –40 °C to +65 °C (–40 °F to +149 °F) operating temperature range

• 9.5 V to 28 V DC input power range, with over-voltage protection

• Capable of rover operation within a VRS (Virtual Reference Station) network

• Moving baseline and heading capability when combined with an appropriate

SPSx51, SPSx50, or SPS551H receiver

• RoHS compliant

18 SPSx51 Modular GPS Receivers User Guide

SPS651 Receiver optional features

• Internal 450 MHz (3 frequency bands) radio with receive capability

• Internal 900 MHz radio with transmit and receive capability

• Can be upgraded to receive GLONASS signals

• Can be upgraded to receive L2C signals

Features and Functions 2

Note – When the receiver is upgraded to GLONASS, the GA510 rover GPS antenna should
be replaced with the Zephyr

This receiver is ideal for site supervisors on construction and roading projects or
marine dredging

SPS751 features

The SPS751 receiver provides the following standard features. For features specific to
each model, see below.

SPS751 standard features

• Integrated GPS receiver and radio

• 450 or 900 MHz radio

• L1/L2/L2C GPS receiver

• OmniSTAR XP/HP/VBS service capable

• WAAS (Wide Area Augmentation System), EGNOS (European Geo-Stationary

Navigation System), and MSAS Satellite Based Augmentation (SBAS)
compatible

™

Model 2 antenna.

• Long-life integrated battery, typically provides 10 hours operation as a base

station with internal transmit/receive radio, or 13 hours as a rover

• Configuration and monitoring interface through the following methods:

– Web interface

– Networked or peer-to-peer Ethernet

– Integrated display and keyboard

– Trimble SCS900 Site Controller software

• Integrated Bluetooth wireless technology for cable-free configuration and

operation with a controller

• Choice of external GPS antenna for base station or rover operation

• Attached or external radio antenna for rover or high-gain base station radio

operation

SPSx51 Modular GPS Receivers User Guide 19

2 Features and Functions

• Small, lightweight design – 1.65 kg (3.64 lbs) receiver only including the battery;

• Permanent/semi-permanent and mobile quick setup base station capability

• Backpack, belt, rod, truck, and marine vessel mounting options for rover

• Capable of all site measurement and stakeout operations within 2.4 km (1.5 m)

• Easy-to-use menu system for rapid configuration and status checking

• AutoBase

• Can broadcast corrections through multiple radio links from one base station,

• CAN (Controller Area Network) support

• Rugged, weatherproof construction with an IP67 environmental rating

• –40 °C to +65 °C (–40 °F to +149 °F) operating temperature range

• 9.5 V to 28 V DC input power range, with over-voltage protection

4 kg (8.82 lbs) complete system weight (rover including controller and rod)

applications

(SPS751 Basic) and typically 5 km (3.1 m) (SPS751 Max)

™

technology for rapid and automated repeated daily base station

setups

for example, through an internal 450 MHz radio and an external 900 MHz radio

• RoHS compliant

• Tracks up to 24 GPS satellites and 4 SBAS satellites

• Can receive GPS L2C signals

• 1 Pulse-per-second (1PPS) output

SPS751 Basic

• Base station only, or rover only, operation

SPS751 Basic base

• Entry-level, low-cost RTK base station

• Unrestricted operational range for rovers and grade control systems

• Integrated transmit-only radio

• Easily upgraded to the SPS751 Max (if the SPS751 Basic base receiver is already

fitted with an internal UHF radio, the upgrade includes the ability for the SPS751
Max to receive signals).

SPS751 Basic rover

• Entry-level, low cost RTK rover receiver

• 2 Hz measurement update rate

• 2.4 km (1.5 mile) operational range from the base station

20 SPSx51 Modular GPS Receivers User Guide

Features and Functions 2

• Integrated receive-only radio

• Easily upgraded to the SPS751 Max (if the SPS751 Basic rover receiver is already

fitted with an internal UHF radio, the upgrade includes the ability for the SPS751
Max to transmit signals)

This receiver is ideal for contractors new to GPS as a starter system or for operating
multiple small projects.

SPS751 Max

• RTK base station and rover operation in a single receiver

• Integrated receive/transmit radio

• 5 Hz or 10 Hz measurement update rate

• Unrestricted rover operation range from a base station

• Operates within a Trimble VRS network, for base station-free rover capability

• Moving baseline and heading capability when any SPSx51 receiver (excluding

the SPS551H or SPS751 Basic receiver) is combined with any SPSx51 or SPS551H
add-on receiver.

SPS851 features

The SPS851 receiver provides the following features:

• Integrated GPS receiver and radio

• 450 or 900 MHz radio

• 72-channel L1/L2/L2C/L5 GPS plus L1/L2 GLONASS receiver

• OmniSTAR XP/HP/VBS service capable

• 4-channel WAAS (Wide Area Augmentation System), EGNOS (European

Geo-Stationary Navigation System), and MSAS Satellite Based Augmentation
(SBAS) compatible

• Long-life integrated battery, typically provides 9 hours operation as a base

station or 12 hours as a rover with internal transmit/receive radio

• Configuration and monitoring interface through the following methods:

– Web interface

– Networked or peer-to-peer Ethernet

– Integrated display and keyboard

– Trimble SCS900 Site Controller software

• Integrated Bluetooth wireless technology for cable-free configuration and

operation with a controller

SPSx51 Modular GPS Receivers User Guide 21

2 Features and Functions

• Choice of external GPS antenna for base station or rover operation

• Attached or external radio antenna for rover or high-gain base station operation

• Small, lightweight design – 1.65 kg (3.64 lbs) receiver only, including the battery;

• Permanent/semi-permanent and mobile quick setup base station capability

• Backpack, belt, rod, truck, and marine vessel mounting options for rover

• Capable of all site measurement and stakeout operations within radio or cellular

• Easy-to-use menu system for rapid configuration and status checking

• AutoBase technology for rapid and automated repeated daily base station

• Can broadcast corrections through multiple radio links from one base station,

• Rugged, weatherproof construction with an IP67 environmental rating

4 kg (8.82 lbs) complete system weight (rover including controller and rod)

applications

coverage

setups

for example, through an internal 450 MHz radio and an external 900 MHz radio
or over the Internet.

• –40 °C to +65 °C (–40 °F to +149 °F) operating temperature range

• 9.5 V to 28 V DC input power range, with over-voltage protection

• Capable of rover operation within a VRS (Virtual Reference Station) network

• Moving baseline and heading capability when any SPSx51 receiver (excluding

the SPS551H or SPS751 Basic receiver) is combined with any SPSx51 or SPS551H
Add-on receiver.

• RoHS compliant

• 1 Pulse-per-second (1PPS) output

Note – To receive GPS L5 or GLONASS signals in the SPS851, you must purchase the
optional upgrade.

Base station

• Unrestricted operational range for rovers and grade control systems

• Base station and rover operation in a single receiver

• Integrated transmit/receive radio

Rover

• 5 Hz, 10 Hz, or 20 Hz measurement update rate (10 Hz maximum in Heading

mode)

• Base station-free rover capability within a VRS network

• Base station-free rover capability using OmniSTAR services

22 SPSx51 Modular GPS Receivers User Guide

• Operates as an SBAS rover when coverage is available

This receiver is ideal for contractors who operate mid-to-large size projects with
machine control.

Use and care

This product is designed to withstand the rough treatment and tough environment
that typically occurs in construction applications. However, the receiver is a
high-precision electronic instrument and should be treated with reasonable care.

Features and Functions 2

C

CAUTION – Operating or storing the receiver outside the specified temperature range can
damage it. For more information, see Chapter 10, Specifications.

COCOM limits

The U.S. Department of Commerce requires that all exportable GPS products contain
performance limitations so that they cannot be used in a manner that could threaten
the security of the United States. The following limitations are implemented on this
product:

• Immediate access to satellite measurements and navigation results is disabled

when the receiver velocity is computed to be greater than 1,000 knots, or its
altitude is computed to be above 18,000 meters. The receiver GPS subsystem
resets until the COCOM situation clears. As a result, all logging and stream
configurations stop until the GPS subsystem is cleared.

SPSx51 Modular GPS Receivers User Guide 23

2 Features and Functions

Keypad and display

1

22

Feature Description

1 Power LED Indicates if the receiver is turned on or off.

2 Buttons Used to turn on and configure the receiver (see Button functions, page 62).

3 Display The receiver has a Vacuum Fluorescent Display that allows you to see how the

receiver is operating and view the configuration settings.

4 Bluetooth antenna Location of the Bluetooth antenna.

Figure 2.1 Front view of the receiver

3

4

24 SPSx51 Modular GPS Receivers User Guide

Rear connectors

1
2

Features and Functions 2

3

Connector type Description

1 TNC Connect to the GPS antenna

2 • TNC (450 MHz Internal

radio)

• Reverse polarity TNC
(900 MHz internal radio)

• Not installed, system without
internal radio

3 Vent plug External venting plug for pressure equalization

4 High Density

DB26

5 Lemo (7-pin/0-shell) • 3 wire RS-232 serial communications using a 7-pin/ 0 shell

Connect to the radio antenna

• Ethernet connectivity to a 10/100 Base-T network through an
RJ45 jack on a multiport adaptor (P/N 57167)

• 'Slave' USB communications through the USB type B
connector on the multiport adaptor (P/N 57167)

• 'Host' USB communications through the USB type A
connector on the 26-pin to Hirose adaptor (P/N 56653-10) and
Hirose to USB type A cable (P/N 73841001)

• Primary power from a Trimble AC/DC power supply
(P/N 62546) using the multiport adaptor (P/N 57167)

• Power input from an SPS700 total station battery cradle
system using the adaptor (P/N 56653-10)

• Full 9-wire RS-232 serial communications using the 26-9-pin
multiport adaptor (P/N 57168) or a 26-pin serial
communications cable

• 1PPS, 2 x RS-232 input DC, USB, Ethernet cable (P/N 60789-00)

Lemo cable

• Secondary power from a Trimble battery (P/N 32364-00 or
32365-00) or a 12 V battery using the Fused Lemo Power
Cable (P/N 46125-20)

•CAN

4

5

Figure 2.2 Rear view of the receiver

SPSx51 Modular GPS Receivers User Guide 25

2 Features and Functions

26 SPSx51 Modular GPS Receivers User Guide

CHAPTER

3

Batteries and Power 3

In this chapter:

Q External power

Q Battery safety

Q Battery performance

Q Charging the Lithium-ion battery

Q Storing the Lithium-ion battery

Q Using the Lithium-ion battery as a

Universal Power Supply (UPS)

Q Removing the rechargeable

Lithium-ion battery

The GPS receiver uses an internal rechargeable
Lithium-ion battery, which can be replaced only
at an Authorized Trimble Service Center.

The receiver can also be powered by an external
power source that is connected to the Lemo or
modem port.

The operational time provided by the internal
battery depends on the type of measurement and
operating conditions. Typically, the internal
battery provides 10 hours operation as a base
station and 12 hours as a rover during
measurement operations using the internal
radio.

Note – All battery operation tests are carried out
with new, fully charged batteries at room
temperature and full receiver configuration
operational. Older batteries, at temperatures
significantly higher or lower than room
temperature, will have a reduced performance.
Receivers operating with reduced configuration will
have a higher performance.

SPSx51 Modular GPS Receivers User Guide 27

3 Batteries and Power

External power

The GPS receiver uses an external power source in preference to its internal batteries.
If the receiver is not connected to an external power source, or if the external power
supply fails, the internal batteries are used.

While carrying out static measurements for postprocessed computations using the
internal memory, if no external power is supplied and the internal battery is drained,
the receiver shuts down. No data is lost and when power is restored, the receiver
restarts in the same status as it was when power was lost.

It is possible to turn off the internal battery using the web interface. In this case, when
external power is switched off, there is a limited time (30 seconds) before the unit turns
off.

Battery safety

The receiver is powered by a rechargable internal Lithium-ion battery. Charge and use
the battery only in strict accordance with the instructions below.

C

C

WARNING – Do not damage the rechargeable Lithium-ion battery. A damaged battery

can cause an explosion or fire, and can result in personal injury and/or property damage.
To prevent injury or damage:
– Do not use or charge the battery if it appears to be damaged. Signs of damage include,
but are not limited to, discoloration, warping, and leaking battery fluid.
– Do not expose the battery to fire, high temperature, or direct sunlight.
– Do not immerse the battery in water.
– Do not use or store the battery inside a vehicle during hot weather.
– Do not drop or puncture the battery.
– Do not open the battery or short-circuit its contacts.

WARNING – Avoid contact with the rechargeable Lithium-ion battery if it appears to be

leaking. Battery fluid is corrosive, and contact with it can result in personal injury and/or
property damage.
To prevent injury or damage:
– If the battery leaks, avoid contact with the battery fluid.
– If battery fluid gets into your eyes, immediately rinse your eyes with clean water and
seek medical attention. Do not rub your eyes!
– If battery fluid gets onto your skin or clothing, immediately use clean water to wash off
the battery fluid.

Battery performance

To optimize battery performance and extend battery life:

• Fully charge all new batteries before use.

• Batteries perform best when they are not used at extreme temperatures. The

receiver is designed to operate at –40 °C to +65 °C (–40 °F to +149 °F). However,
operation at temperatures of less than 0 °C (32 °F) can cause a rapid drop in
battery life.

28 SPSx51 Modular GPS Receivers User Guide