Trimble 6248192 900 MHz FHSS Transceiver User Manual SPSx80 Smart GPS Antenna User Guide

Trimble Navigation Ltd 900 MHz FHSS Transceiver SPSx80 Smart GPS Antenna User Guide

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6248192 User Manual

User Manual

Version 2.28 (SPS780 Smart GPS Antennas)Version 3.20 (SPS880 Smart GPS Antennas)Revision AAugust 2006 USER GUIDETrimble® SPSx80 Smart GPS Antenna

SPSx80 Smart GPS Antenna User Guide vSafety InformationBefore you use your Trimble® SPS GPS receiver, make sure that you have read and understood all safety requirements.Regulations and safetyThe receivers contain an internal radio-modem and can send signals through Bluetooth® wireless technology (SPSx50 Modular GPS receiver and the SPSx80 Smart GPS antenna only) or through an external data communications radio. Regulations regarding the use of the 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.Before operating an SPSx50 Modular GPS receiver or SPSx80 Smart GPS antenna, 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 iii.Type approvalType 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.Exposure to radio frequency radiationFor 450 MHz radioSafety. 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 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.

Safety Informationvi SPSx80 Smart GPS Antenna User Guide•DO NOT operate the equipment near electrical blasting caps or in an explosive atmosphere.•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 radio1CCAUTION – For your own safety, and in terms of the RF Exposure requirements of the FCC, always observe the precautions listed here.•Always maintain a minimum separation distance of 20 cm (7.8 inches) between yourself and the radiating antenna on the SPSx50 radio-modem.•Do not co-locate the antenna with any other transmitting device.For Bluetooth radioThe 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 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.Installing antennasCCAUTION – 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, and having a maximum gain of 5 dBi. Antennas not included in this list, or having a gain greater than 5 dBi, are strictly prohibited for use with this device. The required antenna impedance is 50 ohms.The antennas to be used with the 450 MHz radio are 0 dBi and 5 dBi whip antennas. The antennas to be used with the 900MHz radio are 0dBi, 3dBi, and 5dBi whip antennas.1. 900 Mhz radios are not used in Europe.

SPSx80 Smart GPS Antenna User Guide viiSafety InformationTo reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that permitted for successful communication.Battery safetyCWARNING – 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.CWARNING – 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.CWARNING – 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.

Safety Informationviii SPSx80 Smart GPS Antenna User Guide

SPSx80 Smart GPS Antenna User Guide ixContentsSafety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vRegulations and safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vType approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vExposure to radio frequency radiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vFor 450 MHz radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vFor license-free 900 MHz radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viFor Bluetooth radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viInstalling antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viBattery safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13About the SPSx80 Smart GPS antenna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13SPS780 Basic Smart GPS antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13SPS780 Max Smart GPS antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13SPS880 Extreme Smart GPS antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Related Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Technical Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Your Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142 Features and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16SPS780 Smart GPS antenna standard features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16SPS780 Basic features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16SPS780 Max features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17SPS880 Extreme Smart GPS antenna standard features . . . . . . . . . . . . . . . . . . . . . . . . . 17 Use and care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18COCOM limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Parts of the receiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Front panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Lower housing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Button functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21LED behavior. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21LED flash patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223 Batteries and Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23External power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Battery safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Battery performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Charging the Lithium-ion batteries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Storing the Lithium-ion battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Disposing of the rechargeable Lithium-ion battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Operating the receiver with a Trimble controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Contentsx SPSx80 Smart GPS Antenna User Guide4 Setup Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Base station operation guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Base station components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Base station setup guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Permanent installation antenna cabling for the SPSx50 Modular GPS receiver andSPS770 GPS receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Rover operation guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Rover receiver components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Rover receiver setup guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Cellular modem and external radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 365 Setting up the Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Connecting the receiver to external devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38Trimble controller with SCS900 Site Controller software . . . . . . . . . . . . . . . . . . . . 38External radio-modems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Common ways to set up a base station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40Setting up a base station for permanent or semi-permanent installation. . . . . . . . . . 40Setting up a base station for daily site use: T-Bar . . . . . . . . . . . . . . . . . . . . . . . . . 41Setting up a mobile base station: Tripod and fixed height tripod . . . . . . . . . . . . . . . 42Common ways to set up a rover receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Setting up the rover receiver on a jobsite vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 45Setting up the rover receiver on a rod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47Setting up a rover receiver on a belt or in a backpack . . . . . . . . . . . . . . . . . . . . . . 486 Configuring the Receiver Settings . . . . . . . . . . . . . . . . . . . . . . . 51Using the SCS900 Site Controller software to configure the base station, the rover, andthe radios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52Configuring the receiver to log data for postprocessing . . . . . . . . . . . . . . . . . . . . . . . . . 53Configuring the receiver in real time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53Configuring the receiver using application files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53Special application files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54Applying application files. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55Storing application files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55Naming application files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56Creating and editing the configuration files that control the receiver . . . . . . . . . . . . . . . . 56Installing the Configuration Toolbox software. . . . . . . . . . . . . . . . . . . . . . . . . . . 56Configuring the receiver using the Configuration Toolbox software . . . . . . . . . . . . . 57Transmitting the application file to the receiver . . . . . . . . . . . . . . . . . . . . . . . . . 587 AutoBase Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59Setting Up a Base Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60Best practice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60Antenna type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

SPSx80 Smart GPS Antenna User Guide xiContentsScenarios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61Scenario One: Base station setup on first visit to a site . . . . . . . . . . . . . . . . . . . . . 61Scenario Two: Base station setup on a repeat visit to that site . . . . . . . . . . . . . . . . 61Scenario Three: The stored base station position seems to be missing . . . . . . . . . . . 62Flowchart showing the AutoBase process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 638 Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65Default receiver settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66Resetting the receiver to factory defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66Default behavior. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67Power up settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67Logging data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67Logging data after a power loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 679 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69General specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70Physical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71Communication specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72A NMEA-0183 Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73NMEA-0183 message overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74Common message elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75Message values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75NMEA messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75B GSOF Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91Supported message types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92GSOF message definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92TIME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92LLH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93ECEF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93ECEF DELTA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94NEU DELTA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94Velocity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95PDOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95SIGMA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95SV Brief . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96SV Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97UTC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98Batt/Mem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98Attitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99Flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100Data collector report structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102

Contentsxii SPSx80 Smart GPS Antenna User GuideC Adding Internal Radio Frequencies . . . . . . . . . . . . . . . . . . . . . 103Adding receive frequencies for the 450 MHz internal radio. . . . . . . . . . . . . . . . . . . . . . .104D Upgrading the Receiver Firmware . . . . . . . . . . . . . . . . . . . . . . 105The WinFlash utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106Installing the WinFlash utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106Upgrading the receiver firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106E Data Logging and Postprocessed Measurement Operations . . . . . . . 109Connecting to the office computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110Transferring files directly from a CompactFlash card . . . . . . . . . . . . . . . . . . . . . . . . . .110Deleting files in the receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111Supported file types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111F Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113LED conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114Receiver issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .114Base station setup and static measurement problems . . . . . . . . . . . . . . . . . . . . . . . . . .116Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

CHAPTER1SPSx80 Smart GPS Antenna User Guide 13Introduction 1Welcome to the SPSx80 Smart GPS Antenna User Guide. This manual describes how to set up and use the Trimble® SPSx80 Smart GPS antennas. The SPS GPS receivers is a family of receivers that comprise the SPSx50 Modular GPS receivers, SPS770 GPS receivers, and the SPSx80 Smart GPS antennas. Where necessary, this manual contains references to specific receivers in the product family. When information is specific to a particular model, then the specific model name is used. Even if you have used other Global Positioning System (GPS) products before, Trimble recommends that you spend some time reading this manual to learn about the special features of this product. If you are not familiar with GPS, visit the Trimble website (www.trimble.com) for an interactive look at Trimble and GPS.About the SPSx80 Smart GPS antennaThe SPSx80 Smart GPS antenna family comprises the following Smart GPS antennas:•SPS780 Basic•SPS780 Max•SPS880 ExtremeThe Smart GPS antennas are designed for all on-the-rod rover operation and rapid daily base station setup operation.SPS780 Basic Smart GPS antennaThe SPS780 Basic Smart GPS antenna is the entry level receiver in the SPSx80 Smart GPS antenna family. The SPS780 Basic is available as a base station only or rover only configuration. The receiver is optimized for use on small-to-midsize construction projects. SPS780 Max Smart GPS antennaThe SPS780 Max Smart GPS antenna is available from new or as an upgrade to the SPS780 Basic Smart GPS antenna. The SPS780 Max configuration provides you with base and rover operation capability plus the ability to work at longer ranges from the base station, and to operate as a rover in a Trimble Virtual Reference Station (VRS™) network.SPS880 Extreme Smart GPS antennaThe SPS880 Extreme Smart GPS antenna can track the existing GPS L1 and L2 satellite signals plus the future L2C and L5 signals as they become available. The new signals provide the ability to initialize faster, work in harsher GPS environments, and work at longer ranges from the base station. The SPS880 Extreme can also utilize signals from the Russian GLONASS satellites, providing increased satellite availability and fewer/shorter GPS outages.

1 Introduction14 SPSx80 Smart GPS Antenna User GuideRelated InformationSources of related information include the following:•Help – The SCS900 Site Controller software has built-in, context-sensitive help that lets you quickly find the information you need. Access it from the Help menu. Alternatively, click the ? button in a dialog, or press [F1]. On a Microsoft® Windows® CE device, select Start / Help.•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. •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 SupportIf 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 CommentsYour feedback about the supporting documentation helps us to improve it with each revision. E-mail your comments to ReaderFeedback@trimble.com.

CHAPTER2SPSx80 Smart GPS Antenna User Guide 15Features and Functions 2In this chapter:QSPS780 Smart GPS antenna standard featuresQSPS880 Extreme Smart GPS antenna standard featuresQUse and careQCOCOM limitsQParts of the receiverQButton functionsQLED behaviorThe SPSx80 Smart GPS antennas are designed to be used for the following infrastructure and site development applications:•Layout of structure foundations, caissons and piles•Earthworks, fine grading and finishing stakeout operations•Initial site measurements to verify design levels and regular subsequent measurements to determine progress volumes•Measurements and grade/thickness checks on laid materialsThe SPSx80 incorporates a GPS antenna, receiver, internal radio, and battery in a rugged light-weight unit that is ideally suited as an all-on-the-pole RTK rover or quick setup/rapid mobilization base station. LEDs enable you to monitor satellite tracking, radio reception, data logging status, and power. Bluetooth® wireless technology provides cable-free communications between the receiver and controller. You can use the SPSx80 as part of an RTK GPS system with the Trimble SCS900 Site Controller software.All the receivers can optionally record GPS data to the receiver’s optional internal memory and download to a computer using the serial connection.

2 Features and Functions16 SPSx80 Smart GPS Antenna User GuideOverviewThe SPS780 and SPS880 Extreme Smart GPS antennas (see Figure 2.1) are very similar in setup, operational use, and controls. The SPS880 has a taller antenna dome to accommodate the larger GPS antenna and the circuitry required to track additional GPS signals and GLONASS satellites. Figure 2.1 SPS780 Smart GPS antenna (left), and the SPS880 Extreme Smart GPS antenna (right)SPS780 Smart GPS antenna standard featuresThe SPS780 Smart GPS antenna provides the following features: •Small, lightweight design - 1.31 kg (2.89 lb) (integrated radio, GPS receiver, GPS antenna and battery) 3.7 kg (8.16 lb) complete system weight (rover including TSC2 controller and rod)•The quick setup, high mobility base and rover receiver system is ideal for small to mid-size jobsites and for working on multiple jobsites on a daily or weekly basis•24-channel L1/L2 GPS receiver (SPS780 Basic and SPS780 Max)•Internal, removable, smart Lithium-ion battery provides up to 6.6 hrs GPS rover operation per battery•Bluetooth® wireless technology for cable free, no hassle base or rover operation•Simple keypad with on/off key and LED indicators for power, radio, and satellite tracking•Allows measurement from a moving platform, for example, mounted on a vehicle or marine vessel for increased efficiency on large jobsitesSPS780 Basic features•Rover or base configurations, not interchangeable•2 Hz measurement rover receiver update rate•Rover operational range limited to 1.5 mile (2.4 km) from base station

SPSx80 Smart GPS Antenna User Guide 17Features and Functions 2•Base station operational range limited only by normal restrictions common to UHF radio transmissions•Integrated transmit radio (450 MHz Base configuration only)•Entry level price point for lower cost of base station or rover•Can be upgraded to the SPS780 MaxSPS780 Max features•Base/Rover receiver interchangeability for ultimate GPS fleet flexibility•Rover option offers 10 Hz measurement update rate•Range limited only by normal restrictions common to UHF radio transmissions•Operates as a rover within a Virtual Reference Station (VRS) network for operation without a conventional base station •Integrated transmit/receive radio provides base station and rover operation capability (900 MHz variant contains receive only radio and utilizes the SNB900 radio at the base station for transmit capability) SPS880 Extreme Smart GPS antenna standard features•Small, lightweight design – 1.35 kg (2.97 lb) (integrated radio, GPS receiver, GPS antenna and battery) 3.71 kg (8.18 lb) complete system weight (rover including TSC2 controller and rod)•The quick setup, high mobility base or rover receiver, is ideal for any size jobsite as a rover and for working on multiple jobsites on a daily or weekly basis•72-channel L1/L2/L2C/L5 GPS and L1/L2 GLONASS receiver•Performs all site measurement and stakeout operations within the operating range of the radio•Internal, removable, smart Lithium-ion battery provides up to 5.5 hrs GPS rover operation per battery •Bluetooth wireless technology for cable free, no hassle base or rover operation•Simple keypad with on/off key and LED indicators for power, radio and satellite tracking•20 Hz update rate•Full base/rover interchangeability•Operates within a VRS network for conventional base station-free rover capability•Integrated transmit radio (450MHz version only)•Receives L2C code and L5 carrier signal for future GPS modernization capability•Tracks GLONASS L1/L2 signals for increased satellite availability and operation in harsh GPS environments

2 Features and Functions18 SPSx80 Smart GPS Antenna User Guide Use and careThis 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.CCAUTION – Operating or storing the receiver outside the specified temperature range can damage it. For more information, see Chapter 10, Specifications.COCOM limitsThe 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 1000 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. Parts of the receiverAll operating controls on the SPSx80 Smart GPS antenna are located on the front panel. Serial ports and connectors are located on the bottom of the unit.

SPSx80 Smart GPS Antenna User Guide 19Features and Functions 2Front panelFigure 2.2 shows a front view of the SPSx80 Smart GPS antenna. The front panel contains the three indicator LEDs, and the power button.Figure 2.2 Front panel of the SPSx80 Smart GPS antennaThe power button controls the receiver’s power on or off functions.The indicator LEDs show the status of power, satellite tracking, and radio reception. For more information, see LED behavior, page 21.Satellite LEDRadio LED Power LEDPower button

2 Features and Functions20 SPSx80 Smart GPS Antenna User GuideLower housingFigure 2.3 shows the lower housing of the SPS780 Smart GPS antenna. The lower housing is the same for the SPS880, except for the identifying label. The housing contains the two serial ports, one TNC radio antenna connector, the removable battery compartment and the 5/8-11 threaded insert.Figure 2.3 SPSx80 Smart GPS antenna lower housingEach port or connector on the Smart GPS antenna is marked with an icon to indicate its main function, as shown in Table 2.1.Port 1 is a 7-pin 0-shell Lemo connector that supports RS-232 communications and external power input. Port 1 has no power outputs.Table 2.1 Receiver portsIcon Name ConnectionsPort 1 Device, computer, external radio, power inPort 2 Device, computer, external radioRADIO Radio communications antenna Port 1Port 2TNC radioconnectionReceiver identifying labelantenna 5/8-11" threadedinsert

SPSx80 Smart GPS Antenna User Guide 21Features and Functions 2Port 2 is a DB-9 male connector that allows for full 9-pin RS-232 communications. Port 2 does not support power in or out. For more information on default port settings, see Default receiver settings, page 66. For more information on connector pinouts, see Communication specifications, page 72.The TNC port connector is for connecting a radio antenna to the receiver internal radio. A whip “rubber duck” antenna is supplied with the system for units with internal UHF or 900 MHz radios. This connector is not used if you are using an external radio receiver. For longer range operation (to provide higher gain and to raise the antenna higher above the ground), you can use a cable to connect an external radio antenna to the TNC port. For more information on connecting the SPSx80 Smart GPS antenna, see the Chapter 5, Setting up the Receiver.Button functionsThe receiver has only one button, the Power button, represented in this manual by E . Press E to switch the receiver on or off, and to perform other functions, as described as follows: Note – The term “press” means to press the button and release it immediately. The term “hold” means to press the button and hold it down for the given time.LED behaviorThe three LEDs on the front panel of the receiver indicate various operating conditions. Generally, a lit or slowly flashing LED indicates normal operation, a LED that is flashing quickly indicates a condition that may require attention, and an unlit LED indicates that no operation is occurring. The following table defines each possible LED state:Action Power buttonTurn on the receiver PressTurn off the receiver Hold for 2 secondsDelete the ephemeris file Hold for 15 secondsReset the receiver to factory defaults Hold for 15 secondsDelete application files Hold for 30 secondsThe term … means that the LED …Slow flash alternates on/off for 500 milliseconds.Fast flash alternates rapidly on/off for 100 millisecondsOn is lit steadyOff is unlit

2 Features and Functions22 SPSx80 Smart GPS Antenna User GuideLED flash patternsThe following table details the possible flash patterns to indicate various states of receiver operation. Note – If a column shows “N/A”, that specific LED may or may not be on, but it is not relevant to that particular mode.Receiver mode Power LEDGreenRadio LEDGreenSatellite LEDAmberReceiver OFF OFF OFF OFFReceiver ONHealthy power ON N/A N/ALow power Fast flash N/A N/ATracking <4 SVs ON N/A Fast flashTracking >4 SVs ON N/A Slow flashLogging data internally Flashes off every 3 secondsN/A N/AReceiving valid data packets ON Slow flash N/ANo data packets ON OFF N/AMonitor mode ON Slow flash ON

CHAPTER3SPSx80 Smart GPS Antenna User Guide 23Batteries and Power 3In this chapter:QExternal powerQBattery safetyQBattery performanceQCharging the Lithium-ion batteriesQStoring the Lithium-ion batteryQDisposing of the rechargeable Lithium-ion batteryQOperating the receiver with a Trimble controllerThe GPS receiver is powered by an internal Lithium-ion battery, which can be detached from the receiver for charging. The receiver can also be connected to an external power source through Port 1.During measurement operations, each internal battery typically provides about 6.6 hours of power if using the internal RX (receive) radio and about 4.5 hours operating as a base station using the internal 450 MHz TX (transmit) radio. These times vary according to the type of measurement and the operating conditions.

3 Batteries and Power24 SPSx80 Smart GPS Antenna User GuideExternal powerThe 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.Battery safetyThe receiver is powered by one rechargable Lithium-ion battery. Charge and use the battery only in strict accordance with the instructions in this chapter.CWARNING – 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.CWARNING – 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 performanceTo 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. •Do not allow a battery that is in storage to discharge to below 5 V.

SPSx80 Smart GPS Antenna User Guide 25Batteries and Power 3Charging the Lithium-ion batteriesCWARNING – 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.The rechargeable Lithium-ion batteries are supplied partially charged. Note – Charge the battery completely before using it for the first time. If the battery has been stored for longer than three months, charge it before use.To charge the battery, first remove the battery from the receiver, and then place it in one of the following battery chargers, which is connected to mains power:•The dual-slot GPS battery charger (P/N 41114-00) and power supply (P/N 48800-00): •The five slot multi charger (P/N 49499-00) and power supply (P/N 51694):

3 Batteries and Power26 SPSx80 Smart GPS Antenna User GuideStoring the Lithium-ion batteryIf you must store a Lithium-ion battery for long periods, make sure that it is fully charged before it is stored, and that you charge it at least once every three months while it is stored. Do not allow a battery that is in storage to discharge to below 5 V. A battery that reaches deep discharge level (5 V or less) cannot be recharged and must be replaced. (To protect a battery that is in use from deep discharge, the receiver switches power sources or stops drawing power when the battery pack discharges to 5.9 V.)All batteries discharge over time when not in use, and they discharge faster in colder temperatures. Do not store the receiver at temperatures outside the range –40 °C to +70 °C (–40 °F to +158 °F). Do not store the batteries in the receiver or in the external charger unless power is applied. Keep all batteries on continuous charge when not in use. You can keep batteries on charge indefinitely without damage to the batteries. Disposing of the rechargeable Lithium-ion batteryDischarge a Lithium-ion battery before disposing of it. Dispose of batteries in an environmentally sensitive manner, and adhere to any local and national regulations concerning battery disposal or recycling.Operating the receiver with a Trimble controllerYou can operate an SPS GPS receiver with any Trimble controller, for example, a TSC2 or TCU controller, that is running the SCS900 software. Typically, the receiver and the controller operate from their own individual power sources. The receiver and controller can communicate through Bluetooth wireless technology and can be connected without a cable. However, if a cable is required, the following information indicates which cable to use with which controller:Controller Cable Controller connector Receiver connectorTSC2 P/N 18532 DSub9 DSub9TCU P/N 5302007 6H (Marked “Com” on the controller GPS holder)DSub9TCU (alternative connection)P/N 53004007 6H (Marked “Com” on the controller GPS holder)7OS

CHAPTER4SPSx80 Smart GPS Antenna User Guide 27Setup Guidelines 4In this chapter:QBase station operation guidelinesQRover operation guidelinesGPS Real-Time Kinematic (RTK) operation provides centimeter-level accuracy by eliminating errors that are present in the GPS system. For all RTK operations, you require both a base station and a rover receiver.This chapter introduces the concepts of base station and rover operation, provides information to help you identify good setup locations, describes best practices for setting up the equipment, and outlines the precautions that you need to take to protect the equipment.Note – This chapter provides setup information for all the receivers in the SPS GPS receiver family.

4 Setup Guidelines28 SPSx80 Smart GPS Antenna User GuideBase station operation guidelinesA base station consists of a receiver that is placed at a known (and fixed) position. The receiver tracks the same satellites that are being tracked by the rover receiver, at the same time that the rover is tracking them. Errors in the GPS system are monitored at the fixed (and known) base station, and a series of position corrections are computed. The corrections are sent through a radio link to the rover receiver, where they are used to correct the real time positions of the rover.Base station componentsThe base station has the following components:•GPS receiver•GPS antenna•Base station radio•Power supplyGPS receiver and GPS antennaThe base station GPS receiver can be one of following types:•A Smart GPS antenna, such as the SPSx80, which incorporates a GPS receiver, GPS antenna, power supply, and base station radio into a single compact unit. A Smart GPS antenna can be rapidly set up on a tripod, fixed height tripod, or T-Bar anywhere that is convenient on the jobsite.•A Modular GPS receiver, such as the SPSx50, which incorporates a GPS receiver, power supply, and base station radio in a single unit. The GPS antenna (and, optionally, the base station radio antenna) is separate from the receiver. Because the GPS antenna is separate, you can use the following optimized components: – a geodetic antenna with large ground plane, to eliminate multipath (the major source of GPS errors) at the base station– a high gain or directional radio antenna, to increase broadcast range and to provide maximum coverageYou can also place a modular GPS receiver in an easily accessible and secure location, safe from theft and the weather, while the antennas are placed high on a tower or building, clear of obstructions and able to deliver maximum performance.You can use either type of receiver in a permanent, semi-permanent, or daily quick setup configuration. If semi-permanent or permanent operation is required, however, the modular receiver delivers significant advantages.

SPSx80 Smart GPS Antenna User Guide 29Setup Guidelines 4Base station setup guidelinesFor good performance, observe the following base station setup guidelines:•Place the GPS receiver in a location on the jobsite where equal range in all directions provides full coverage of the site. This is more important on larger jobsites, where the broadcast range of the base station radio may limit the operations of the GPS system.•Place the GPS antenna in a location that has a clear line of sight to the sky in all directions. Do not place the GPS antenna near vertical obstructions such as buildings, deep cuttings, site vehicles, towers, or tree canopy.•Place the GPS and radio antennas as high as practical. This minimizes multipath from the surrounding area, and enables the radio to broadcast to the maximum distance. Note – The GPS antenna must have a clear line of sight to the sky at all times during operation. •Choose the most appropriate radio antenna for the size and footprint of the site. The higher the gain on the antenna, the longer the range. If there is more focus on the transmission signal, there is a reduced coverage area. A 3 db or 5 db gain antenna provides a mix of good range and reasonable directional coverage.•Make sure that the GPS receiver does not lose power. The GPS receiver has an integrated battery, which has to be charged. To operate for the full day without loss of power at the base station, provide external power. Sources of external power include:–AC power– 12 V car or truck battery– Trimble custom external battery pack– Generator power–Solar panelWhen you use an external power supply, the integrated battery provides a backup power supply, enabling you to maintain continuous operation through a mains power failure. When the GPS receiver is connected to a power source greater than 15 V, the integrated battery is continuously charged from the connected power source. This helps to ensure that the battery stays charged (SPS770 and SPSx50 only).•Do not locate a GPS receiver, GPS antenna, or radio antenna within 400 meters (about 1312 feet) of: – a powerful radar, television, or cellular communications tower–another transmitter– another GPS antenna

4 Setup Guidelines30 SPSx80 Smart GPS Antenna User GuideCellular phone towers can interfere with the base station radio broadcast and can stop corrections from reaching the rover receiver. High-power signals from a nearby radio or radar transmitter can overwhelm the receiver circuits. This does not harm the receiver, but can prevent the receiver electronics from functioning correctly.Low-power transmitters, such as those in cellular phones and two-way radios, do not interfere with receiver operations. •Do not set up the base station directly beneath or close to overhead power lines or electrical generation facilities. The electromagnetic fields associated with these utilities can interfere with GPS receiver operation. Other sources of electromagnetic interference include:– Gasoline engines (spark plugs)– Televisions and computer monitors– Alternators and generators– Electric motors–Equipment with DC-to-AC converters– Fluorescent lights–Switching power supplies•Place the GPS receivers in a protected and secure location. If the base station is in the center of a jobsite where heavy machinery is operating, place flags around the base station to warn operators of its existence.•If you place the SPSx50 Modular GPS receiver or SPS770 GPS receiver in a lock box on the jobsite to protect the receiver from theft or from the weather, shield the lock box from direct sunlight and provide ventilation for the receiver through an inlet and extractor fan. A receiver that has a broadcast radio generates significant heat. Do not allow the temperature in the box to exceed 65 ºC (149 ºF). If working in a cold climate, you may need to provide heat to the receiver. Do not operate the receiver below –40 ºC (–40 ºF).•Trimble recommends that, wherever possible, you keep GPS receiver equipment dry. The receivers are designed to withstand wet weather, but keeping them dry prolongs their life and reduces the effects of corrosion on ports and connectors. If the equipment gets wet, use a clean dry cloth to dry the equipment, and then leave the equipment open to the air to dry. Do not lock wet equipment in a transport case for prolonged periods. Avoid exposing the GPS receiver to corrosive liquids and salt water wherever possible.

SPSx80 Smart GPS Antenna User Guide 31Setup Guidelines 4•Trimble recommends that you install lightning protection equipment at permanent base station locations. Equipment should include a gas capsule lightning protector in the GPS and radio antenna feed line and appropriate safety grounding. A static dissipater near the antennas can reduce the likelihood of a direct lightning strike. Also protect any communications and power lines at building entry points. For more information, contact your local Trimble dealer, or go to the Huber and Suhner website (www.hubersuhnerinc.com).•Trimble recommends that you use surge protection equipment on all permanently installed equipment.Permanent installation antenna cabling for the SPSx50 Modular GPS receiver and SPS770 GPS receiverMany permanent base station installations have unique cabling requirements. Depending on the available infrastructure, you may need to mount the antenna a considerable distance from the receiver.The SPSx50 and SPS770 can withstand a loss of 12 dB between the GPS antenna and the receiver. The degree of loss in a coaxial cable depends on the frequency of the signal passing through it. Table 4.1 lists some common cable types and the maximum length you can use before an inline amplifier for GPS frequencies is required.Rover operation guidelinesThe second part of the RTK GPS system is the rover receiver.The rover receiver is mounted on a pole, vehicle, marine vessel, or in a backpack, and is moved between the points that require measurement or stakeout. The rover receiver is connected to a base station or to a source of RTK corrections such as a Virtual Reference Station (VRS) system. The connection is provided by an integrated radio, a Table 4.1 Maximum cable lengthsCable type Maximum length (for use without an inline amplifier)RG-214 30 m (100 ft)LMR-400 70 m (230 ft)LMR-500 85 m (280 ft)LMR-600 106 m (350 ft)Heliax LDF4/50 165 m (540 ft)Heliax LDF4.5/40 225 m (740 ft)

4 Setup Guidelines32 SPSx80 Smart GPS Antenna User Guidecellular modem in the controller, or through an external cellular phone that is connected to the receiver either by Bluetooth wireless technology or by means of a cable.The correction stream for some other positioning solutions, such as SBAS (WAAS/EGNOS, and MSAS) and the OmniSTAR XP or HP service1, is broadcast through geostationary satellites, and detected by the GPS antenna itself. No integrated radio or base station is required.Rover receiver componentsThe rover receiver has the following components:•GPS receiver•GPS antenna•Optional integrated radio receiver and antenna for RTK operations•Optional items for the different mounting options (see below)In most rover applications, the receiver operates entirely from its own integrated battery unit. On a vehicle or on a marine vessel, however, an external power supply can be used. Use an external power supply if one is provided. The internal battery then acts as a uninterruptible power supply, covering any external power failures.Choose a rover receiver according to the needs of the job:•A Smart GPS antenna, such as the SPSx80, incorporates the GPS receiver, GPS antenna, power supply, and receive radio into a single compact unit. A Smart GPS antenna can be rapidly set up on a pole, vehicle, or backpack. This makes it easy to carry when you are measuring around the jobsite. •A Modular GPS receiver, such as the SPSx50, incorporates the GPS receiver, receive radio, and power supply into a single unit. The GPS antenna and, optionally, the receive radio antenna, is separate from the receiver. When you use a modular GPS receiver as a rover, you can use optimized components placed in the best locations for your application. For example:– A small, lightweight rover antenna can be mounted on a pole or backpack; placed in a high, inaccessible location on a marine vessel mast or cabin; or placed on a site vehicle roof or truck bed.– A rubber duck radio antenna, or an external radio antenna, can be mounted on a vehicle or vessel roof to provide maximum coverage.A Modular GPS receiver can be placed in a location that is both easily accessible and safe from theft and the weather. The antennas can be placed high on a vehicle or vessel roof, clear of obstructions and able to deliver maximum performance.1. OmniSTAR is only available with the SPSx50 Modular GPS receiver.

SPSx80 Smart GPS Antenna User Guide 33Setup Guidelines 4Rover receiver setup guidelinesFor good rover operation, observe the following setup guidelines:•Place the GPS antenna in a location that has a clear line of sight to the sky in all directions. Do not place the antenna near vertical obstructions such as buildings, deep cuttings, site vehicles, towers, or tree canopy. GPS rovers and the base station receive the same satellite signals from the same satellites: if you obscure the signals at times, the system will be unable to provide RTK Fixed positions.•Place the GPS and radio antennas as high as possible to minimize multipath from the surrounding area. The receiver must have a clear line of sight to the sky at all times during operation.•GPS satellites are constantly moving. Because you cannot measure at a specific location now does not mean that you will not be able to measure there later, when satellite coverage or location improves. Use GPS planning software to identify the daily best and worst satellite coverage times for your location, and then choose measurement times that coincide with optimal GPS performance. This is especially important when operating in the worst GPS locations.•The SPS770 Extreme, the SPS850 Extreme, and SPS880 Extreme can track the GPS L2C modernization signal. Additionally, the SPS850 Extreme and SPS880 Extreme can track the GPS L5 modernization signal and the GLONASS satellite constellation. These signals help you to get positions at the worst times of the day and in the worst GPS locations, but do not guarantee that you will.•To get a fixed position solution with centimeter accuracy, initialize the rover receiver. For initialization to take place, the receiver must track at least five satellites that the base station is also tracking. In a dual-satellite constellation operation, for example, GPS and GLONASS, the receiver must track at least six satellites.•To maintain a fixed position solution, the rover must continuously track at least four satellites that the base station is also tracking. In a dual-satellite constellation operation, for example, GPS and GLONASS, the receiver must track at least five satellites.The radio link between the base and rover receivers must also be maintained.•Loss of the satellite signals or loss of the radio link results in a loss of centimeter position accuracy. From Fixed, the receiver changes to Float or Autonomous mode:– In Float mode, the rover has connection to the base station through a radio, but has not yet initialized. – In Autonomous mode, the rover has lost radio contact with the base station receiver, and is working by itself with the available GPS signals.

4 Setup Guidelines34 SPSx80 Smart GPS Antenna User Guide•On a vehicle or marine vessel, place the GPS antenna in a location as free from shock and vibration as possible. For the modular receivers, a single magnetic mount is normally sufficient to hold the antenna in a suitable location, whereas for the larger smart antenna, a triple magnetic mount is normally recommended. Good alternatives include a 5/8" thread bolt in a suitable location on the roof bars, or a door-mounted pole bracket.CCAUTION – The SPS880 Extreme is not suited to on-vehicle operation where it will be subject to heavy vibration, that is, operation in rough ungraded terrain. Use in these conditions can damage the SPS880 Extreme.•To mount the modular receiver on a pole, use two pole mounting brackets and a second tripod clip (P/N 571 204 300). See Figure 4.1. Figure 4.1 Rod mount for modular receiverTo mount the modular receiver on a marine vessel, use the receiver bracket (P/N 56830-00). For marine moving base and heading applications, use the receiver bracket to mount two receivers together.

SPSx80 Smart GPS Antenna User Guide 35Setup Guidelines 4•Make sure that the rover receiver does not lose power. An SPSx50 is typically powered by its internal battery. You cannot change the battery, but the charge typically lasts for longer than a working day. The batteries in the SPSx80 can be changed when flat. (See Chapter 3, Batteries and Power). If you do not use the rover receiver very often, ensure that it is charged at least every three months. For vehicle operation or marine vessel operation, Trimble recommends that you use an external power source so that the internal battery can be saved for times when the receiver is being used off the vehicle or vessel. •Do not locate the receiver or antenna within 400 meters (1312 ft) of powerful radar, television, cellular communications tower, or other transmitters or GPS antennas. Low-power transmitters, such as those in cellular phones and two-way radios, normally do not interfere with receiver operations. Cellular towers can interfere with the radio and can interfere with GPS signals entering the receiver. High-power signals from a nearby radio or radar transmitter can overwhelm the receiver circuits. This does not harm the receiver, but it can prevent the receiver electronics from functioning correctly.•Do not use the rover receiver directly beneath or close to overhead power lines or electrical generation facilities. The electromagnetic fields associated with these utilities can interfere with GPS receiver operation. Other sources of electromagnetic interference include:– gasoline engines (spark plugs)– televisions and computer monitors– alternators and generators– electric motors–equipment with DC-to-AC converters– fluorescent lights– switching power supplies•Trimble recommends that, wherever possible, all GPS receiver equipment is protected from rain or water. Although, the receivers are designed to withstand all wet weather conditions, keeping the receivers dry prolongs the life of the equipment and reduces the effects of corrosion on ports and connectors. If the equipment gets wet, use a clean dry cloth to dry the equipment, and then leave the equipment open to the air to dry. Do not lock wet equipment in a transport case for prolonged periods. Wherever possible, avoid exposing the GPS receiver to corrosive liquids and salt water.•If you are using the rover receiver in open spaces, Trimble recommends that you stop work during electrical storms where the risk of lightning strike is high.•Where cables are involved, Trimble recommends that you use cable ties to secure the cables to the rod or other equipment to avoid inadvertent snagging while moving about the jobsite. Be careful not to kink, twist, or unnecessarily extend cables, and avoid trapping them in vehicle doors or windows. Damage to cables can reduce the performance of GPS equipment.

4 Setup Guidelines36 SPSx80 Smart GPS Antenna User GuideInternal radio setup for rover operationsThe internal radio of the SPS GPS receiver is delivered with the transmit (Tx) radio frequencies preprogrammed into the receiver. To add receive (Rx) radio frequencies to 450 MHz radios, use the WinFlash utility (see Appendix C, Adding Internal Radio Frequencies). Radio frequences cannot be added to the 900 MHz radios.Once the radio frequencies are configured, use the controller or receiver to select channel frequencies during base station or rover setup operations.Cellular modem and external radioInstead of the internal radio, you can use a cellular modem or an external radio as your data communications link. To connect a cellular modem to an SPSx80 Smart GPS antenna, you need the following:•SPSx80 Smart GPS antenna.•One of the following:– TSC2 controller with CompactFlash card cellular modem, for example, a Audiovox modem card– Cellular modem or a cellular phone that can transmit data•Serial (cellphone to DB9) cable (supplied with the cellular modem or phone).•Port 2 of the SPSx80 supports full RS-232 protocol, and should function properly with most cellular phone cables. Some cellular units may require custom cabling.Alternatively, the receiver also supports a cable-free Bluetooth connection with Bluetooth-enabled cell phones. For more information on using a cellular modem as a data link, refer to the SCS900 Site Controller Software Getting Started Guide and SCS900 Site Controller Software Office Guide.

CHAPTER5SPSx80 Smart GPS Antenna User Guide 37Setting up the Receiver 5In this chapter:QConnecting the receiver to external devicesQCommon ways to set up a base stationQCommon ways to set up a rover receiverIn this chapter, recommendations for setting up the receiver as a base station or for rover operations are provided. The recommendations cover a variety of common use scenarios. Note – This chapter provides setup information for all the receivers in the SPS GPS receiver family.

5 Setting up the Receiver38 SPSx80 Smart GPS Antenna User GuideConnecting the receiver to external devicesYou can connect an SPSx80 to the following devices:•a Trimble controller running Trimble SCS900 Site Controller software•an external radio-modemTrimble controller with SCS900 Site Controller softwareTo connect a Trimble controller that is running the SCS900 Site Controller software to an SPS GPS receiver, use Bluetooth wireless technology ( for all except the SPS770 GPS receiver) or a serial cable. Table 5.1 shows how to connect the cables for each combination of SPS GPS receiver and Trimble controller.Table 5.1 Connecting to a Trimble controller running the SCS900 Site Controller softwareUse this cable connector …and connect the cable to …Cable part numberTo connect a SPSx50 Modular GPS receiver to a …TSC2 DB9 TSC2 32960Lemo SPSx50TCU 6-pin Hirose TCU 53004007Lemo SPSx50TSCe™ Lemo TSCe 31288-xxLemo SPSx50 This cable is available in different lengths. The -xx indicates the length of the cable, in meters.ACU 4-pin Hirose ACU 44147Lemo SPSx50To connect a SPS770 Modular GPS receiver to a …TSC2 DB9 TSC2 32960Lemo (Port 1) SPS770TCU 6-pin Hirose TCU 53004007Lemo (Port 1) SPS770TSCe Lemo TSCe 31288-xxLemo (Port 1) SPS770 This cable is available in different lengths. The -xx indicates the length of the cable, in meters. ACU 4-pin Hirose ACU 44147Lemo SPS770To connect a SPSx80 Smart GPS antenna to a …TSC2 DB9 TSC2 32960Lemo (Port 1) SPSx80TCU 6-pin Hirose TCU 53004007Lemo (Port 1) SPSx80TSCe Lemo TSCe 31288-xxLemo (Port 1) SPSx80 This cable is available in different lengths. The -xx indicates the length of the cable, in meters.

SPSx80 Smart GPS Antenna User Guide 39Setting up the Receiver 5External radio-modemsThe most common data link for Real-Time Kinematic (RTK) operation is a radio. The SPSx80 is available with the following internal radios:•410 – 430 MHz (Tx/Rx, Rx only, or Tx only)•430 – 450 MHz (Tx/Rx, Rx only, or Tx only)•450 – 470 MHz (Tx/Rx, Rx only, or Tx only)•900 MHz (Rx only)Note – “Tx” indicates that the radio transmits corrections. “Rx” indicates that the receiver receives corrections. “Tx/Rx” indicates that the radio both transmits and receives corrections.If the SPSx80 does not have an internal transmit radio, or you want to connect to a higher powered external transmit radio or cellular modem, use the DB9 port, the Lemo port, or Bluetooth wireless technology. The SPS780 supports the following Trimble base radios:•TRIMMARK 3•Trimble SNB900•Trimble PDL450•Trimble HPB450The receiver also supports third-party transparent radios and third-party cellular modems.To use an external radio with the SPSx80, you need an external power source for the radio—except for the SNB900 radio, which contains an internal battery. To configure the radio modem separately, use the external radio’s configuration program, or display and keypad.ACU 4-pin Hirose ACU 44147Lemo SPSx80Table 5.1 Connecting to a Trimble controller running the SCS900 Site Controller software (cont)Use this cable connector …and connect the cable to …Cable part number

5 Setting up the Receiver40 SPSx80 Smart GPS Antenna User GuideCommon ways to set up a base stationYou can set up a base station in different ways depending on the application, coverage area, degree of permanence versus mobility, and available infrastructure. Before you set up a base station, please read Chapter 4, Setup Guidelines.Setting up a base station for permanent or semi-permanent installationFor construction applications, where machine and site positioning operations using GPS will be carried out over a long time (weeks, months, or years), ensure that you choose the base station location carefully. A semi-permanent or permanent base station helps to eliminate the types of error that can result from repeated daily setups, and ensures that you always use the GPS antenna at the exact original location. The requirement for a permanent base station setup increases as more receivers that use the base station as a source of corrections, increases the cost of any base station downtime. On the largest jobsites, and on those that remain operational for the longest time, a permanent or semi-permanent installation is a popular solution. An SPSx50 or SPS770 GPS receiver is typically used as the base station, located in a site office or trailer where it is easy to access (to check or configure), and where it is secure from theft and the weather. The GPS and radio antennas are normally mounted on a permanent structure on the roof of the building, where they are high and clear from obstructions and where the radio antenna can provide the maximum range of operation. The GPS antenna most commonly used is the Trimble Zephyr Geodetic™ Model 2. This antenna has a large ground plane that eliminates multipath, providing the best GPS performance at the base location. The antennas are connected to the receiver by high quality RF cables.The receiver is connected to a permanent power supply (mains or generator power). The internal battery of the receiver is always being charged, and acts as an uninterruptible power supply if there is a power failure. In some cases, the receiver may also be connected by an Ethernet cable to the Internet, so that it can be monitored and configured from a remote location, and can warn an administrator by e-mail or text message if there is a change to the configuration. In these situations, the receiver can transmit GPS RTK corrections to a remote radio or receiver over the Internet, for rebroadcast requirements, without using repeaters.

SPSx80 Smart GPS Antenna User Guide 41Setting up the Receiver 5 Figure 5.1 SPSx50 receiver permanent installationSetting up a base station for daily site use: T-BarFor construction applications where a daily setup and takedown of equipment is required for security reasons, Trimble recommends that you use a T-Bar setup. The T-Bar consists of a post mounted in concrete (so it cannot move), which has a solid metal T-Bar mounted to it to provide lateral separation between the GPS antenna and radio antenna. The T piece of the T-Bar has a vertical rod at each end. Each end terminates in a 5/8"×11 thread to which the antennas can be mounted. Trimble recommends that one end is clearly marked GPS and the other end is clearly marked Radio so that at each daily setup, the GPS and radio antennas are mounted at the same location. Switching antennas by mistake introduces a position error in all resulting measurements. You can buy the parts you need to make a T-Bar from any reputable hardware store. Make certain that the T-Bar cannot rotate after construction. Rotation of the T-Bar can introduce a position error into all subsequent measurements.On the upright post, mount either a bracket (to which the GPS receiver can be mounted), or a well-ventilated lockbox (in which the GPS receiver itself can be secured).

5 Setting up the Receiver42 SPSx80 Smart GPS Antenna User GuideEach day, mount the GPS antenna on the GPS end of the T-Bar and the radio antenna on the Radio end of the T-Bar. Connect the antennas to the receiver using the appropriate cables.The receiver uses its own integrated battery, or an external 12 V battery through the 12 V crocodile clips cable that are provided with the receiver. If you choose to use AC power, remember that the heat generated by the charging process and the radio transmitter increases the need for good ventilation around the receiver.In such scenarios, an SPSx80 Smart GPS antenna is also often used. Simply mount the SPSx80 on the T-Bar, and optionally connect to an external battery or radio unit.AdvantagesUse of a T-Bar setup ensures that the base station is set up with exactly the same position and height every day. This helps eliminate the errors typically associated with daily tripod setup. For example, wrong antenna height, base not set up over the point, base set up in the wrong location.Figure 5.2 System set up on a T-bar showing an external radio antenna to gain longer rangeSetting up a mobile base station: Tripod and fixed height tripodIf you are repeatedly moving between jobsites, or if you are visiting a jobsite for the first time before a T-Bar or similar setup can be established, Trimble recommends that you use either a tripod and tribrach setup, or a fixed height tripod.The fixed height tripod is quicker and easier to set up over a control point. Take great care to ensure that the GPS antenna is set up accurately over the control point, and that the GPS antenna height is measured accurately, in the right way (vertical or slope GPSRadio

SPSx80 Smart GPS Antenna User Guide 43Setting up the Receiver 5height) to the right location on the antenna (base of antenna or to a specified location on the antenna). When you start the rover receiver, it is extremely important to check in, at one or more known locations, to check for possible position or height errors. Checking in at a known location is good practice and can avoid costly errors caused by a bad setup.Typically, the tripod and fixed height tripod methods do not give significant height clearance above the ground, and can reduce the range of operation caused by radio limitations.Tripod and tribrach setupIn the tripod setup, the tripod is located over the control point, and the tribrach and tribrach adaptor is mounted on the tripod and centered over the point. 1. Mount the GPS antenna on the tribrach adaptor. – If you are using a SPSx80 Smart GPS antenna, use the 25 cm spacer rod provided with the SPSx80 base station accessory kit. This allows the radio antenna in the receiver to clear the head of the tripod. 2. Clip the GPS receiver to the tripod (SPSx50 and SPS770 only).3. Connect the GPS antenna to the receiver using the appropriate cable (SPSx50 and SPS770 only). 4. If necessary, connect the GPS receiver to an external 12 V power supply. Use the crocodile clip cable or the Trimble custom power pack.Figure 5.3 Tripod and tribrach setup for the SPSx50 and the SPSx80SPSx80 with an internal 450 MHz TX radioSPSx50 with an external high-gain antennaSPSx50 with a low-gain “rubber duck” antenna

5 Setting up the Receiver44 SPSx80 Smart GPS Antenna User GuideFixed height tripod setupA fixed height tripod setup is similar to a tripod setup, but is simplified by the central leg of the tripod, that is placed directly on the control point. If the central leg is leveled accurately, the fixed height tripod is quick and easy to set up, and provides an accurate way to measure the true antenna height.1. Set up the tripod over the control point.2. Attach the GPS antenna to the head of the tripod.3. If using an external high-gain radio antenna, mount the radio antenna to the radio antenna bracket that is attached to the head of the tripod (beneath the GPS antenna). See Figure 5.4.4. If using the SPSx50 Modular GPS receiver, hook the receiver to the center leg of the tripod, using the tripod clip. 5. If using the SPSx80 Smart GPS antenna, you can mount the antenna using the 25 cm spacer rod (supplied with the SPSx80 Base Station Accessory kit) so that the radio antenna clears the head of the tripod. Figure 5.4 Fixed height tripod setup for the SPSx50 and SPSx80SPSx80 with an internal 450 MHz TX radio on a fixed height tripodSPSx50 with an external high-gain radio antennaSPSx50 with a low-gain “rubber duck” antennaRadio antenna bracket

SPSx80 Smart GPS Antenna User Guide 45Setting up the Receiver 5Common ways to set up a rover receiverYou can set up a rover receiver in different ways depending on the application. The components that make up a rover receiver are:•GPS receiver•GPS antenna•controller/computer•rod mounting equipment, including a rod, receiver bracket, and controller bracket•vehicle mounting equipment, including a suction cup and ball joint, extension arm, controller bracket, magnetic antenna mount, and necessary cables.•backpack equipment, including backpack and antenna-mounting rod•marine vessel mounting equipment, including receiver bracket, cables, antenna, and radio antenna brackets.Setting up the rover receiver on a jobsite vehicleCCAUTION – This following rover setup is suited only to offroad (jobsite) vehicle use. Do not use this method on a vehicle that is driven at speed or in traffic.1. Do one of the following, depending on your receiver:– SPSx50 or SPS770: Mount the GPS antenna for the receiver on the roof of the vehicle. Use a single magnetic mount or a 5/8"×11 thread bolt attached to the roof bars. Run the GPS antenna cable for the receiver into the vehicle either through a rubber grommet in the roof, or through the passenger door window, which needs to be left slightly open during operation.– SPSx80: Mount the receiver on the roof of the vehicle. Use a triple magnetic mount or a 5/8"×11 thread bolt attached to the roof bars.2. Place and secure the GPS receiver in a convenient location in the vehicle.The GPS receiver can be controlled through the controller connected using Bluetooth wireless technology (SPSx50 or SPSx80) or a cable connected to a port on the receiver (SPS770).The receiver needs to be accessed only to turn it on at the start of each measurement session. It may be more convenient if the SPSx50 is placed in a location where the vehicle operator can see the keypad and display, to monitor receiver status and to configure settings as required. Most receiver capability can be controlled using the SCS900 Site Controller software.3. Attach the suction cup to the front windscreen, dashboard, or other convenient location in the vehicle, making sure that it does not obstruct the driver’s view.

5 Setting up the Receiver46 SPSx80 Smart GPS Antenna User Guide4. Attach the RAM extension arm to the suction cup, and the controller bracket to the RAM extension arm. 5. Lock the controller into the controller bracket and then adjust the bracket until the controller is in the most convenient location. Make sure that the controller does not restrict visibility through the front windscreen during vehicle use.6. Lock the brackets so that the controller is held securely. If required, connect either the GPS receiver or the controller to an in-vehicle power supply as needed.Figure 5.5 Configuring SPSx50 from the cab. A Zephyr Model 2 antenna is mounted on the roof

SPSx80 Smart GPS Antenna User Guide 47Setting up the Receiver 5Setting up the rover receiver on a rodFor rod-based operation, mount the SPSx50 Modular GPS receiver as follows: 1. Mount the two rod brackets on the rod.2. Tighten the top bracket, making sure that it is at a convenient height for the receiver.3. Place the receiver in the slot in the rod bracket, and secure with the tripod clip.4. Move the lower rod bracket down until it is over the second tripod clip on the receiver, and then tighten the rod bracket onto the rod. The receiver is held in place between the two brackets.5. Insert the controller into the controller bracket as shown opposite.6. Use the 5/8" thread to attach the GPS antenna to the top of the rod. 7. Use the GPS antenna cable to connect GPS antenna to the receiver.For rod-based operation, mount the SPSx80 Smart GPS antenna as follows:1. Mount the receiver on the top of the rod using the 5/8"×11 thread in the base of the SPSx80.2. Insert the controller into the controller bracket.3. The SPSx80 and controller communicates through Bluetooth wireless technology. However, if a cable is required, connect the cable between the controller and receiver (see Figure 5.6 through Figure 5.7).

5 Setting up the Receiver48 SPSx80 Smart GPS Antenna User GuideFigure 5.6 Connections for a rover SPSx80 setup, a TSC2 or TCU controller, and a 450 Mhz base stationFigure 5.7 Cabled connections for an SPSx80 setup, a TSC2 or TCU controller, and a 900 Mhz base station (with external power)Setting up a rover receiver on a belt or in a backpackIf you prefer to work free of the weight of a pole, you can mount the rover receiver on a belt (SPS770 or SPSx50 only) or carry it in/on a backpack (all receivers). When you wear the receiver on a belt, ensure that the display is always visible so that you can easily check the status of the receiver. If you carry the receiver in a backpack, use an external radio antenna mount to allow for optimal radio signal reception. If you use a low gain antenna mounted directly on the receiver in a backpack, it may affect the radio signal reception and reduce the likelihood of obtaining an RTK Fixed solution.Cabled connections Bluetooth connectionsP/N 53002007P/N 32960<<diagram being updated>>P/N 53002007P/N 32960P/N 312888-02P/N 46125-00

SPSx80 Smart GPS Antenna User Guide 49Setting up the Receiver 5

5 Setting up the Receiver50 SPSx80 Smart GPS Antenna User Guide

CHAPTER6SPSx80 Smart GPS Antenna User Guide 51Configuring the Receiver Settings 6In this chapter:QUsing the SCS900 Site Controller software to configure the base station, the rover, and the radiosQConfiguring the receiver to log data for postprocessingQConfiguring the receiver in real timeQConfiguring the receiver using application filesQCreating and editing the configuration files that control the receiverYou can configure the SPS GPS receiver family in a variety of ways. This chapter describes the different configuration methods, and explains when and why each method is used.The SPS770 and SPSx80 receivers have no controls for changing settings. To configure these receivers:•In real time, use external software such as the HYDROpro™ software, or the GPS Configurator or WinFlash utility. •In an application file, use the Configuration Toolbox utility.The SCS900 Site Controller software is likely to be your main tool to set up and operate the receiver on a daily basis. All necessary field configurations are handled through the SCS900 software running on a TSC2 or TCU controller. For more information, refer to the Trimble SCS900 Site Controller Software Getting Started Guide or the Trimble SCS900 Site Controller Software Office Guide.The external software detailed in this chapter is primarily used to update the receiver firmware and to configure upgrades or radio channels.

6 Configuring the Receiver Settings52 SPSx80 Smart GPS Antenna User GuideUsing the SCS900 Site Controller software to configure the base station, the rover, and the radiosAs part of a total system solution for construction applications, the SPS GPS receivers are operated by a TSCe, ACU, TCU, or TSC2 controller running the SCS900 Site Controller software. The SCS900 Site Controller software provides the tools to configure and start the GPS receiver in the modes used by the SCS900 system: Base Station, RTK Rover, DGPS Rover, OmniSTAR rover, SBAS Rover (using WAAS/EGNOS and MSAS). Wizards help you through the process and, where possible, assign suitable default operational parameters to the system. This eliminates the need for an operator to know how to configure the receiver with the right settings.The SCS900 Site Controller software manages:•the radio, whether internal or external•all cellular communications components, such as modems and cellphones•the use of the Bluetooth wireless technologyThe software also scans communication ports on the receiver to identify connected devices. If the software cannot automatically identify the connected component, for example, a GPS antenna, it offers options (often with graphics) to help you manually select the correct component.The SCS900 Site Controller software allows you to set operational tolerances and settings (such as those shown below), which must be achieved before measurements can be accepted. When outside of these tolerances, the SCS900 Site Controller software warns you through on-screen messages or indications, and the non-automatic acceptance of recorded positions. To set operational tolerances, go to the the Settings menu in the SCS900 Site Controller software.Example 2: Use the Sky Plot screen toExample 1: From the Sky Plot screen, press Ctrl+M to open this screen and change the anglebelow which the receiver will not track satellitesset if the receiver will track GLONASS satellites

SPSx80 Smart GPS Antenna User Guide 53Configuring the Receiver Settings 6Configuring the receiver to log data for postprocessing The SPS GPS receivers do not come equipped with the Data Logging option. The receivers can have this added either at the time of purchase, or at a later date as an option. With the Data Logging option enabled, the receiver has available memory that facilitates the collection of GPS observations over a period of time, and that can be used with GPS postprocessing software such as the Trimble Geomatics Office™ for the computation of control networks and baselines.Note – The SCS900 system does not support postprocessed applications. Trimble recommends that you use either the front panel keypad and display, the Web User Interface, or (SPS770, SPSx80 only) the GPS Configurator software to configure the receiver for postprocessed measurement sessions. Configuring the receiver in real timeThe SPS770 and SPSx80 receivers can be configured in real time by the GPS Configurator software. When you configure the receiver in real time, you use the software to specify which settings you want to change. When you apply the changes, the receiver settings change immediately.Any changes that you apply to the receiver are reflected in the current application file, which is always present in the receiver. The current application file always records the most recent configuration, so if you apply further changes (either in real time or using an application file) the current file is updated and there is no record of the changes that you applied originally.Configuring the receiver using application files An application file contains information for configuring a receiver. To configure a receiver using an application file, you need to create the application file, transfer it to the receiver and then apply the file’s settings. The GPS Configurator software does this automatically when you work with configuration files.OverviewAn application file is organized into records. Each record stores configuration information for a particular area of receiver operation. Application files can include the following records:•File Storage•General Controls•Serial Port Baud Rate/Format•Reference Position

6 Configuring the Receiver Settings54 SPSx80 Smart GPS Antenna User Guide•Logging Rate•SV Enable/Disable•Output Message•Antenna•Device Control•Static/Kinematic•Input MessageAn application file does not have to contain all of these records. When you apply an application file, any option that is not included in the records in the file remains at its current setting. For example, if you apply an application file that only specifies the elevation mask to use, all other settings remain as they were before the application file was applied.You can store up to twenty different application files in the receiver. You can apply an application file’s settings at the time it is transferred to the receiver, or at any time afterwards.Special application filesThe receiver has three special application files, which control important aspects of the receiver’s configuration.Default application fileThe default application file (Default.cfg) contains the original receiver configuration, and cannot be changed. This file configures the receiver after it is reset. You can reset the receiver by pressing E for at least 15 seconds, or by using the reset option in the GPS Configurator software.For more information, see Chapter 8, Default Settings.Although you cannot change or delete the default application file, you can use a power up application file to override any or all of the default settings.Current application fileThe current application file (Current.cfg) reflects the current receiver configuration. Whenever you change the receiver’s configuration, either in real time or by applying an application file, the current file changes to match the new configuration.You cannot delete the current file or change it directly, but every change to the receiver’s current configuration is applied to the current file as well.When you switch off the receiver then turn it on again, all the settings from the current application file are applied, so you do not lose any changes that you have made. The only exceptions are the following logging parameters:•Logging rate

SPSx80 Smart GPS Antenna User Guide 55Configuring the Receiver Settings 6•Position rate•Elevation maskThese parameters are always reset to the factory default values whenever the receiver is switched off.Power Up application fileThe power up application file (Power_up.cfg) is used to set the receiver to a specific configuration any time the unit is powered up. In this file, you can specify that the receiver is reset to defaults before the power up settings are applied. This ensures that restarting the receiver always resets it to factory defaults prior to applying the power up application file.Alternatively, you can specify that the power up settings are applied immediately after the current application file’s settings have been applied. Restarting the receiver results in a configuration that uses your default settings for the options you define in the power up file, but the current settings for all other options.By default, there is no power_up application file on the receiver. To use a power up application file, you must create and save a power_up application file in the GPS Configurator software. If you save this file to disk, the file is called power_up.cfg. The extension .cfg is used, by convention, to identify application files on the office computer. When you transfer this file to the receiver, the file is saved on the receiver as power_up, and becomes the new power up file.The power up file is the only special application file that you can overwrite or delete from the receiver.Applying application filesAn application file’s settings do not affect the receiver’s configuration until you apply the application file. You can do this at the same time that you save the file. Alternatively, you can save the file on the computer or in the receiver, then open it later and apply its settings.Storing application filesYou can store application files that you create in the GPS Configurator software on the receiver and on the computer. For example, each file can represent a different user sharing the same receiver, or a particular mode of operation. Saving application files on your computer as well as in your receiver is optional, but it is useful because:•it gives you a permanent copy of the settings you have sent to a receiver, for audit or your own reference.•you can use the same file to configure multiple receivers identically.•you can use an existing application file as a template to create other application files with similar settings.

6 Configuring the Receiver Settings56 SPSx80 Smart GPS Antenna User GuideNaming application filesThe application filename in the office computer and in the receiver are always the same. This makes it easier to recognize and keep track of your application files. When you change the name of the application file in the receiver, this changes the application filename on your computer. When you transfer an application file from the receiver and save it to the computer, the system renames the file to match the internal receiver file. However, if you use Windows Explorer, for example, to change the .cfg filename on the computer, this does not change the internal receiver filename. This means that the GPS receiver does not recognize the change to the filename on the computer. Creating and editing the configuration files that control the receiverThe Configuration Toolbox software enables you to create and edit GPS receiver configuration files. The settings in these files control the operation of the GPS receiver. The GPS receiver configuration file can then be copied and sent to the receiver.You can also create a file, called an application file or appfile, (*.cfg), which contains all the receiver settings necessary for a particular job or application. Application files can be stored on both the receiver and computer. Multiple files can be maintained to represent multiple users sharing a device and/or multiple modes of operation. You can also save files to audit the operating settings of a receiver.For applications requiring real-time positions in any coordinate system other than WGS-84, you need the Configuration Toolbox software to define and transfer the necessary coordinate system and transformation parameters.A maximum of ten files can be stored in the receiver. This includes the files default.cfg and current.cfg, which always reside in the receiver.Note – If you use the SCS900 Site Controller software in the field, you do not need to use the Configuration Toolbox software to set up the transformation parameters. This is done through the Site Calibration process in the SCS900 software.Installing the Configuration Toolbox softwareYou can install the Configuration Toolbox software from the Trimble SPS GPS Receiver CD that is shipped with your receiver, or download it from the Trimble website.The Configuration Toolbox software requires one serial port dedicated to receiver communications. Installing new versions of the Configuration Toolbox software updates the Coordinate System Library. If you have calibrated sites stored on your computer, save them as receiver configuration files. This ensures that the coordinate system information for particular sites are not overwritten.

$SPSx80 Smart GPS Antenna User Guide 57Configuring the Receiver Settings 6Installing new versions of the Configuration Toolbox software into a directory containing a previous version overwrites the older program and data files. By default, application files located in the root installation folder, C:\TOOLBOX, are moved to the APPFILE\ subfolder.The installation program creates the subfolders shown in Table 6.1 within the installation folder.Configuring the receiver using the Configuration Toolbox software1. Select Start /Programs /Trimble /Configuration Toolbox.2. Select File /New /SPSx80 or SPS770.3. Make the appropriate selections for your receiver settings. For more information, see the Help and the Configuration Toolbox User Guide.4. To save the application file, select File / Save As.Make sure that you specify the same 8-character file name when you save the file both in the computer and on the receiver, as shown in the Configuration File dialog:Table 6.1 Subfolders within the installation folderSubfolder Descriptionbin\ Contains the Configuration Toolbox executable file (ctoolbox.exe) and dynamic link libraries (*.dll).appfiles\ This is the preferred directory for storing application files. Existing application files from earlier versions of Configuration Toolbox are moved here during the installation.cseditor\ Contains the Coordinate System Editor executable file (cseditor.exe), dynamic link libraries (*.dll), and help files.geolib\ Contains the geodetic database files used by the Configuration Toolbox software and the Coordinate System Editor software.$

6 Configuring the Receiver Settings58 SPSx80 Smart GPS Antenna User GuideTransmitting the application file to the receiver1. Connect the data/power cable (part number 32345) to the receiver and the computer.2. Connect the O-shell Lemo connector to the receiver port.3. Connect the female DB9 connector to the computer.4. Connect the power leads of the data/power cable to the power supply.5. To open the application file you require, select File / Open.6. With the file open and the Configuration File dialog open, select Communications / Transmit File.A message appears when the application file is successfully transmitted. If an error occurs, select Communications / Transmit File again. This overrides any incompatibility in baud rates and enables successful communication.To check the successful transmission, close the Configuration File dialog and then select Communications / Get File. A list of all application files in the receiver appears. If you clicked Apply Immediately in the application file, the new file will be the current file.To change files, select the required file from the list and then select Communications / Activate File.

CHAPTER7SPSx80 Smart GPS Antenna User Guide 59AutoBase Feature 7In this chapter:QSetting Up a Base StationQBest practiceQAntenna typeQScenariosQScenario One: Base station setup on first visit to a siteQScenario Two: Base station setup on a repeat visit to that siteQScenario Three: The stored base station position seems to be missingQFlowchart showing the AutoBase processThe Trimble SPS880 Extreme Smart GPS antenna features AutoBase™ technology, which provides the following advantages: •Reduced risk of a setup that uses incorrect base station coordinates. •Reduced daily setup times for a mobile base station. When you use an SPS880 Extreme Smart GPS antenna as a base station receiver, you do not need to reconfigure the receiver at the start of each day. The AutoBase feature is a function of the version 3.x receiver firmware, which supports both GPS modernization (L2C and L5 signals) and GLONASS signals. You cannot turn off the AutoBase warning feature in the SPS880 Extreme Smart GPS antenna. Note – With the SPS880 Extreme Smart GPS antenna, always start a base station setup by using the SCS900 Site Controller software to initialize the SPS880 Extreme Smart GPS antenna on a new point. See page 60.Please read this chapter even if you have used the AutoBase feature in other Trimble receivers. New functions now provide even greater benefits.

7 AutoBase Feature60 SPSx80 Smart GPS Antenna User GuideSetting Up a Base StationThe AutoBase feature influences how you set up an SPS880 Extreme Smart GPS antenna as a base station. Before the receiver can transmit RTK corrections (that is, operate as an RTK base station), the current position of the receiver must correspond to a previous base station position. The base station position—latitude, longitude, and height—must be part of the GPS site calibration. Note – There is no need to configure the base station receiver settings manually.1. To perform the first base station setup at a new location, always use the SCS900 Site Controller software to initialize the SPS880 Extreme Smart GPS antenna on a new point. You generally do this only once, the first time that you occupy the point, but see the Caution below. When the base station setup is complete, the receiver generates and stores an application file that contains the parameters for that location. CCAUTION – When you perform a future base station setup at the same location, the receiver assumes that there has been no change to either the antenna height or the antenna height measurement method used previously. It is therefore essential that you keep the antenna height constant between setups. If there is any risk that the antenna height might have changed, you must use the SCS900 Site Controller software to start (and so reset) the SPS880 Extreme Smart GPS antenna. From the SCS900 Site Controller software, select Start Base Station.2. To perform a future base station setup at the same location, simply press the Power key on the receiver. The receiver turns on, determines its location, finds the appropriate application file, initializes the settings, and starts to broadcast RTK CMR+ corrections through the internal radio or through the external radio (whichever radio was used the previous time).If the receiver uses an external radio, such as an SNB900 radio, the AutoBase feature raises the Bluetooth® wireless connection to the radio. If a Bluetooth connection is not used, the AutoBase feature searches the receiver communications ports for the external radio. When the receiver finds the external radio, the receiver transmits RTK CMR+ corrections to the radio. Best practiceAfter each new base station setup, and at the start of every measurement session, Trimble recommends that you measure one known point to verify that the position and height errors are within tolerance. The measurement takes only a few seconds, but can eliminate the gross errors typically associated with daily base station setup.Antenna typeThe selected antenna type determines which options are available for determining the antenna height. The AutoBase feature uses an antenna type of “R8 Model 2 /SPS880 Internal.”

SPSx80 Smart GPS Antenna User Guide 61AutoBase Feature 7ScenariosThese scenarios describe what you may experience when using AutoBase technology.Note – The AutoBase Warning feature is always turned on in an SPS880 Extreme Smart GPS antenna.Scenario One: Base station setup on first visit to a site•You set up the base station receiver on a point that you have not previously used as a base station with that receiver.1. The receiver is powered on.2. The receiver begins tracking satellites.3. The receiver determines the current position.4. The receiver reviews the base positions stored in the receiver.5. The receiver does not find any base station that corresponds to the current position.6. The receiver will not begin transmitting RTK corrections and the radio LED will not flash.No RTK corrections will be streamed until the base station is set up using the SCS900 Site Controller software.Scenario Two: Base station setup on a repeat visit to that site •You set up the base station receiver on a point that you have previously used as a base station with that receiver.1. The receiver is powered on.2. The receiver begins tracking satellites.3. The receiver determines the current position.4. The receiver reviews the base station positions stored in the receiver.5. The receiver finds a base station position that corresponds to the current position. A base station position is found, so the AutoBase warning is not displayed.6. The receiver loads the previous base information.7. The antenna type, antenna height, and measurement method used in the previous setup of this base station are applied.

7 AutoBase Feature62 SPSx80 Smart GPS Antenna User GuideCCAUTION – When you perform a future setup at the same location, the receiver assumes that there has been no change to either the antenna height or the antenna height measurement method used previously. It is therefore essential that you keep the antenna height constant between setups. If there is any risk that the antenna height might have changed, you must use the SCS900 Site Controller software to start (and so reset) the SPS880 Extreme Smart GPS antenna. From the SCS900 Site Controller software, select Start Base Station.8. The receiver begins generating RTK CMR+ corrections.9. The RTK corrections begin streaming on the radio or port defined in the previous setup of this base station.Scenario Three: The stored base station position seems to be missing•You set up the base station receiver on a point that you have previously used as a base station, as in Scenario Two. But for some reason, the stored base station position is not found in the receiver. Someone has inadvertently deleted the data, or perhaps a different receiver ( for example, the other receiver in a pair) was used on the previous occasion.1. The base station receiver is set up on a point that you have previously used as a base station.2. The receiver is powered on.3. The receiver begins tracking satellites.4. The receiver determines the current position.5. The receiver reviews the base station positions stored in the receiver.6. The receiver does not find any base station that corresponds to the current position.7. The receiver will not begin transmitting RTK corrections and the radio LED will not flash.No RTK corrections will be streamed until you do one of the following things:•Use the SCS900 Site Controller software to set up the base station.•Change to the receiver that was previously used as the base station at this location.

SPSx80 Smart GPS Antenna User Guide 63AutoBase Feature 7Flowchart showing the AutoBase processFigure 7.1 AutoBase featureUse SCS900 to reset and restart the receiverNoAutoBase warning is displayedChange to the receiver that was previously used as the base station at this locationPower on receiverReceiver looks for application filesDo application files exist?NoYe sAnyapplication file that corresponds with the current position?NoYe sYe sMake most recent created application activeMakecorresponding applicationfile activeIs there more than one acceptable application file?or

7 AutoBase Feature64 SPSx80 Smart GPS Antenna User Guide

CHAPTER8SPSx80 Smart GPS Antenna User Guide 65Default Settings 8In this chapter:QDefault receiver settingsQResetting the receiver to factory defaultsQDefault behaviorQPower up settingsQLogging dataAll SPSx80 Smart GPS antenna settings are stored in application files. The default application file, Default.cfg, is stored permanently in the receiver, and contains the factory default settings for the SPSx80 Smart GPS antenna. Whenever the receiver is reset to its factory defaults, the current settings (stored in the current application file, Current.cfg) are reset to the values in the default application file.You cannot modify the default application file. However, you can create a power-up application file so that the settings in this file can be applied immediately after the default application file, overriding the factory defaults. For more information, see Configuring the receiver using application files, page 53.

8 Default Settings66 SPSx80 Smart GPS Antenna User GuideDefault receiver settingsThese settings are defined in the default application file. Resetting the receiver to factory defaultsTo reset the receiver to its factory defaults, do one of the following:•On the receiver, press E for 15 seconds.•In the GPS Configurator software, select Connect to Receiver and then click Reset receiver in the General tab.•In the Configuration Toolbox software, select the General tab and then click Reset Receiver.Note – For more information on the GPS Configurator and Configuration Toolbox software which are supplied on the Trimble SPS GPS Receiver CD , see Chapter 6, Configuring the Receiver Settings.Function Factory defaultSV Enable All SVs enabledGeneral Controls: Elevation mask 13°PDOP mask 7RTK positioning mode Low LatencyMotion KinematicSerial Port 1: Baud rate 115,200Format 8-None-1Flow control NoneSerial Port 2: Baud rate 115,200Format 8-None-1Flow control NoneInput Setup: Station AnyNMEA/ASCII (all supported messages) All ports OffStreamed output All Types OffOffset = 00RT17/Binary All ports OffReference position: Latitude 0°Longitude 0°Altitude 0.00 m HAEAntenna: Type Trimble SPS780, SPS880, InternalHeight (true vertical) 0.00 mGroup AllMeasurement method Bottom of mount

SPSx80 Smart GPS Antenna User Guide 67Default Settings 8Default behaviorThe factory defaults specified on page 66 are applied whenever you start the receiver. If a power up application file is present in the receiver, its settings are applied immediately after the default settings, so you can use a power up file to define your own set of defaults. The factory defaults are also applied when you perform a full reset of the receiver because resetting the receiver deletes the power up files.When starting any of the SPS GPS receivers as a base station or rover receiver using the Trimble SCS900 site controller software or the HYDROpro™ software, the settings as required for those operations are automatically set and configured in that software. To change the receiver settings for special applications or for use with third-party software, use the GPS Configurator software or the Configuration Toolbox software.Power up settingsWhen you turn off the receiver, any changes that you have made to logging settings are lost and these settings are returned to the factory defaults. Other settings remain as defined in the current file. The next time you turn on the receiver, the receiver checks for a power up file and, if one is present, applies the settings in this file.Logging dataLogging data with the SPS GPS receivers is available as an option. By default, the data logging option is turned off. For information on how to enable the data logging option, and the necessary postprocessing software options, please contact your Trimble dealer.Data logging using GPS receivers requires you to have access to suitable GPS postprocessing software such as Trimble Geomatics Office™ or Trimble Total Control™. Data logging involves the collection of GPS measurement data over a period of time at a static point or points, and subsequent postprocessing of the information to accurately compute baseline information. Postprocessed GPS data is typically used for control network measurement applications and precise monitoring. The following information only applies if you have the Data Logging options enabled in the receiver, and that you intend to carry out GPS postprocessed measurement operations.Logging data after a power lossIf the receiver loses power unexpectedly, when power is restored the receiver tries to return to the state it was in immediately before the power loss. The receiver does not reset itself to default settings. If the receiver was logging data when power was lost unexpectedly, it resumes logging data when power is restored.

8 Default Settings68 SPSx80 Smart GPS Antenna User Guide

CHAPTER9SPSx80 Smart GPS Antenna User Guide 69Specifications 9In this chapter:QGeneral specificationsQPhysical specificationsQElectrical specificationsQCommunication specificationsThis chapter details the specifications for the SPSx80 Smart GPS antenna.Specifications are subject to change without notice.

9 Specifications70 SPSx80 Smart GPS Antenna User GuideGeneral specificationsPhysical specificationsFeature SpecificationKeyboard and display On/Off key for one button startup using AutoBase technologyLED indicators For satellite tracking, radio link reception, and power monitoringReceiver type Fully integrated “Smart” GPS antennaFeature SpecificationDimensions (LxWxH) 19 cm (7.5 in) x 10 cm (3.9 in) including connectorsWeight 1.28 kg (2.88 lb) receiver only, with internal battery3.70 kg (8.16 lbs) complete system weight, including controller and pole (when used as a rover)Temperature1OperatingStorage–40 °C to +65 °C (–40 °F to +149 °F)–40 °C to +75 °C (–40 °F to +167 °F)Humidity 100%, condensingWaterproof IP67 for submersion to depth of 1 m (3.28 ft)Shock and vibrationShock, non operatingShock, operatingVibrationTested and meets the following environmental standards:Designed to survive a 2 m (6.6 ft) pole drop onto concreteMIL-STD-810F, Fig.514.5C-17To 40 G, 10 msec, saw-toothMIL-STD-810F, FIG.514.5C-1Measurements • Advanced Trimble Maxwell™ Custom GPS chip• High-precision multiple correlator for L1 and L2 pseudo-range measurements• Unfiltered, unsmoothed pseudo range measurements data for low noise, low multipath error, low time domain correlation and high dynamic response• Very low noise L1 and L22 carrier phase measurements with <1 mm precision in a 1 Hz bandwidth• Proven Trimble low elevation tracking technology• 24 Channels (SPS780 only)• L1/L2 full cycle carrier (SPS780 only)• L1 and L2 Signal-to-Noise ratios reported in dB-Hz• 72 Channels L1/L2/L2C/L5 GPS and L1/L2 GLONASS (SPS880 Extreme only)• WAAS / EGNOS support Code differential GPS positioning3Horizontal accuracyVertical accuracy±(0.25 m + 1 ppm) RMS, ± (9.84 in + 1 ppm) RMS±(0.50 m + 1 ppm) RMS, ± (19.68 in + 1 ppm) RMS

SPSx80 Smart GPS Antenna User Guide 71Specifications 9Electrical specificationsWAAS differential positioning accuracy4Typically <5 m (16.40 ft) 3D RMSReal Time Kinematic (RTK) positioning3HorizontalVerticalInitialization timeRegular RTK operation with base stationRTK operation with Scalable GPS infrastructureInitialization reliability5±(10 mm + 1 ppm) RMS, ± (0.38 in +1 ppm) RMS±(20 mm + 1 ppm) RMS, ± (0.78 in +1 ppm) RMSSingle/Multi-base minimum 10 sec + 0.5 times baseline length in km, <30 km<30 seconds typical anywhere within coverage area (SPS780 Max and SPS880 Extreme only).Typically >99.9%1 Receiver will operate normally to –40 °C. Bluetooth module and internal batteries are rated to –20 °C.2 The availability of the L2C code GPS signal is dependent on the US government.3 Accuracy and reliability may be subject to anomalies such as multipath, obstructions, satellite geometry, and atmospheric conditions. Always follow recommended practices.4 Depends on WAAS/EGNOS system performance.5 May be affected by atmospheric conditions, signal multipath, and satellite geometry. Initialization reliability is continuously monitored to ensure highest qualityFeature SpecificationPower, internal 11 to 28 V DC external power input with over-voltage protection on Port 1 (7-pin Lemo)Battery Rechargeable, removable 7.4 V, 2.4 Ah Lithium-ion battery in internal battery compartmentPower consumption <2.5 W, in RTK rover mode with internal radioRover operation time on internal battery 450 MHz 900 MHz5.5 hours; varies with temperature (Rx only)5.5 hours; varies with temperature (Rx only)Base station operation times on internal battery450 MHz900 MHz4.2 hours; varies with temperature (Tx/Rx)5.5 hours; varies with temperature (External Tx radio)Certification Class B Part 15, 22, 24FCC certificationCanada FCCCE mark approvalC-tick approvalWEEEFeature Specification

9 Specifications72 SPSx80 Smart GPS Antenna User GuideCommunication specificationsFeature SpecificationCommunicationsPort 1 (7-pin 0S Lemo)Port 2 (DSub 9-pin)Bluetooth3-wire RS-232Full RS-232Fully integrated, fully sealed 2.4 GHz Bluetooth11 Bluetooth type approvals are country specific. Contact your local Trimble office or representative for more information.Integrated radios Fully integrated, fully sealed internal 450 MHz, TX, RX, or Tx/Rx2Fully integrated, fully sealed internal 900 MHz, Rx32 Tx only or Rx only with SPS780 Basic; Tx/Rx with SPS780 Max.3900 MHz is Rx only with SPS780, external transmit radio must be used when configured as a base.450 MHz transmitter radio power output 0.5 WExternal GSM/GPRS, cellular phone support Supported for direct dial and Internet-based VRS correction streamsCellular phone or GSM/GPRS modem inside TSC2 controllerReceiver position update rateSPS780 BasicSPS780 MaxSPS880 Extreme1 Hz and 2 Hz positioning1 Hz, 2 Hz, 5 Hz, and 10 Hz positioning1 Hz, 2 Hz, 5 Hz, 10 Hz, and 20 Hz positioningData Input and Output CMR, CMR+, RTCM 2.1, RTCM 2.2, RTCM 2.3, RTCM 3.0 Outputs NMEA, GSOF, and RT17Carrier Supports BINEX and smoothed carrier (SPS880 Extreme only)

APPENDIXASPSx80 Smart GPS Antenna User Guide 73NMEA-0183 Output AIn this appendix:QNMEA-0183 message overviewQCommon message elementsQNMEA messagesThis appendix describes the formats of the subset of NMEA-0183 messages that are available for output by the receivers. For a copy of the NMEA-0183 Standard, go to the National Marine Electronics Association website at www.nmea.org.

A NMEA-0183 Output74 SPSx80 Smart GPS Antenna User GuideNMEA-0183 message overviewWhen NMEA-0183 output is enabled, a subset of NMEA-0183 messages can be output to external instruments and equipment connected to the receiver serial ports. These NMEA-0183 messages let external devices use selected data collected or computed by the GPS receiver.All messages conform to the NMEA-0183 version 3.01 format. All begin with $ and end with a carriage return and a line feed. Data fields follow comma (,) delimiters and are variable in length. Null fields still follow comma (,) delimiters but contain no information.An asterisk (*) delimiter and checksum value follow the last field of data contained in an NMEA-0183 message. The checksum is the 8-bit exclusive of all characters in the message, including the commas between fields, but not including the $ and asterisk delimiters. The hexadecimal result is converted to two ASCII characters (0–9, A–F). The most significant character appears first.The following table summarizes the set of NMEA messages supported by the receiver, and shows the page that contains detailed information about each message. To enable or disable the output of individual NMEA messages, do one of the following:•Create an application file in the GPS Configurator software that contains NMEA output settings and then send the file to the receiver.•Add NMEA outputs in the Serial outputs tab of the GPS Configurator software and then apply the settings. (You cannot use the GPS Configuration software to load application files to the SPSx50 Modular GPS receivers.)•For SPSx50 Modular GPS receivers, set up the NMEA output using the keypad and display or a web browser.Message Function PageADV Position and Satellite information for RTK network operations 76GGA Time, position, and fix related data 77GSA GPS DOP and active satellites 78GST Position error statistics 79GSV Number of SVs in view, PRN, elevation, azimuth, and SNR 80HDT Heading from True North 81PTNL,AVR Time, yaw, tilt, range, mode, PDOP, and number of SVs for Moving Baseline RTK82PTNL,GGK Time, position, position type and DOP values 83PTNL,PJK Local coordinate position output 84PTNL,VGK Time, locator vector, type and DOP values 85PTNL,VHD Heading Information 86RMC Position, Velocity, and Time 87ROT Rate of turn 88VTG Actual track made good and speed over ground 89ZDA UTC day, month, and year, and local time zone offset 90

$SPSx80 Smart GPS Antenna User Guide 75NMEA-0183 Output ACommon message elementsEach message contains:•a message ID consisting of $GP followed by the message type. For example, the message ID of the GGA message is $GPGGA.•a comma•a number of fields, depending on the message type, separated by commas•an asterisk•a checksum valueBelow is an example of a simple message with a message ID ($GPGGA), followed by 13 fields and a checksum value:$GPGGA,172814.0,3723.46587704,N,12202.26957864,W,2,6,1.2,18.893,M,-25.669,M,2.0,0031*4FMessage valuesNMEA messages that the receiver generates contains the following values.Latitude and longitudeLatitude is represented as ddmm.mmmm and longitude is represented as dddmm.mmmm, where:•dd or ddd is degrees•mm.mmmm is minutes and decimal fractions of minutesDirectionDirection (north, south, east, or west) is represented by a single character: N, S, E, or W.TimeTime values are presented in Universal Time Coordinated (UTC) and are represented as hhmmss.cc, where:•hh is hours, from 00 through 23•mm is minutes•ss is seconds•cc is hundredths of secondsNMEA messagesWhen NMEA-0183 output is enabled, the following messages can be generated.$