Home
Trimble NetR8 user guide
Contents
1. 78 Physical Specifications 44444444 obruta e a Pe rad as e aas dau 78 Electrical specificatioNS oo e errar 79 Communication specifications 79 A NMEA 0183 OUIDUE aiu ars SHEE es sonde sectes ds 81 NMEA 0183 message overview 82 Common message elements 83 Messase Values vs eH a Lea oh PER Ede dansent 83 NMEA messages Lu Le tegunt se OR e DO we open e le X wag e ione u es 83 B Upgrading the Receiver Firmware 99 The WinFlash utility 5saeshe ca mx GR GANAS EERE EN RR E RE EE TE E ea 100 Installing the WinFlash utility 100 10 NetR8 GNSS Reference Receiver User Guide Contents Upgrading the receiver firmware 100 Forcing the receiver into Monitor mode 101 Troubleshooting 103 REC IV TISSURS PC m 104 A NON ns Se Tt 7777227 77217727 oe ww BE 107 NetR8 GNSS Reference Receiver User Guide 11 Contents 12 NetR8 GNSS Reference Receiver User Guide Introduction B About the NetR8 GNSS Reference receiver B Related information W Technical support m Your comments CHAPTER Welcome to the NetR8 GNSS Reference Receiver User Guide This manual describes how to set up and use the Trimble Ne
2. Bluetooth Info Infineon UniStone HAN v2 3 FAN v8 5 8 1 21 1 2 20 NetR8 480507252 Trimble Bluetooth MAC Address 00 80 37 2e 91 77 Discoverable True PinCods 0000 64 NetR8 GNSS Reference Receiver User Guide Configuring the Receiver Settings 6 OmniSTAR menu Use the OmniSTAR menu to configure OmniSTAR settings This figure shows an example of the screen that appears when you select OmniSTAR Summary OmniSTAR Summary SV name Auto Frequency MHz 0 0000 Bit Rate Hz 0 Setting Off Mode Off SNR Eb No 0 00 Total messages 0 Bad messages Total unique word bits Total Viterbi symbols 0 0 Bad unique word bits 0 0 Corrected Viterbi symbols 0 Network Configuration menu Use the Network Configuration menu to configure Ethernet settings email alerts PPP connection HTTP port FTP port and VFD Virtual Front Display port settings of the receiver The VED port allows you to use the NetR8 Remote Control application to view and navigate the receiver through a mock display and keypad interface To allow the NetR8 Remote Control to connect to the receiver select Network Configuration VFD to enable the VFD port A viewing utility is available on the Trimble Survey and Reference Receivers CD under NetR8 utilities The receiver can notify a system administrator by sending alerts about general status changes in the receiver as well as warning messages in case of problems to a
3. 1 Fromthe Home screen press The Operation Mode screen appears 2 As reference station setup is the default press repeatedly to move through the menu choices until Logging is displayed The Logging screen allows you to edit the settings for the Default logging session 3 Do one of the following Press to edit the default M logging rate Press Dor to select the desired rate and then press Press SZ to move to the logging rate field Press Sto edit the logging rate Press y to select a rate To store the new settings press 4 Press to move to the next screen Enabling logging sessions The Logging Session screen appears 1 Press C7 to change the session to be enabled Press W or W to move among the session names With the desired session name displayed press amp to enable editing Note If you have not set up an additional session using the web interface you will only be able to select the Default session 2 Press W to move to the On Off field 3 Press to edit the settting 4 Press to change the setting to the required state When finished press 5 Press to move to the next screen 42 NetR8 GNSS Reference Receiver User Guide CHAPTER Configuring the Receiver Settings In this chapter You can configure the NetR8 receiver to perform a wide variety of functions This chapter describes the configuration methods other than m Configuring the NetR8 receiver the front panel disp
4. Receiver Configuration Reference Station Use the Receiver Configuration Reference Station screen to configure settings such as the station coordinates and the broadcast station identifiers You must enter accurate information in these fields as this data can significantly affect the accuracy of logged data files and broadcast RTK correctors Reference Station Reference Latitude 39 p 53 1528839 SNOS Reference Longitude 105 le 145 40964 OEOW Reference Height 1669 804 m CMRID 9 RTCM 2xID 168 RTCM3xID t68 Station Name STATION 168 Station Code 1688 Load Current Position NetR8 GNSS Reference Receiver User Guide 61 6 Configuring the Receiver Settings Receiver Configuration Tracking Use the Receiver Configuration Tracking screen to determine whether Everest technology and clock steering are used This screen also allows you to select which signals relating to particular satellites are to be stored Tracking Everest Enable v Clock Steering Enable v Type Signal Enable Options GPS L2 Legacy M 2 CS with y fallback GPS L2 cs amp CM CL M GPS L5 M I Q w spas Li ca m SBAS L5 GLONASS L1 C A m GLONASS L1 P a GLONASS L2 C A M m GLoNAss L2 P m D CAM eP v Receiver Configuration Pos
5. 6 The Data Logging Summary screen displays the files that are currently being stored It shows their schedules their names whether they are using memory pooling and in which directory they are being stored Internal Data Logging 3 75 GB 2 2 GB 59 DEFAULT Continuous 1440 Min Logging IInternal _168266a T01 Pool Usage 495 8 MB 50Hz_1HR Continuous 60 Min Logging IInternal 50Hz_1HR 2008 09 22 _168266tA T01 Pool Usage 992 7 MB 1hz_1HR Continuous 60 Min Logging IInternal 2008 09 22 1hz_1HRI _168266tD T01 Pool Usage 78 4 MB 15Sec1HR Continuous 60 Min Logging IInternal f amp 5Sec1HR 2008 09 22 4805K07252200809221900C T01 Pool Usage 0 1 MB 1Sec24HR Continuous 1440 Min Logging IInternal 1 Sec24HR 2008109 221 4805K07252200809220000G T01 Pool Usage 0 MB NetR8 GNSS Reference Receiver User Guide 55 6 Configuring the Receiver Settings To edit a logging session double click the session name To create a new session click the New Session button The Data Logging Configuration screen appears Session Name Enable Schedule Duration Measurement Interval Smooth Pseudorange Smooth Phase Position Interval File System Path Style Name Style Pool FTP Push Data Logging Configuration DEFAULT v Continuous M 1440 i Minutes 30Sec O HO 0 1 Sec Y Interna
6. e Mount stability that is not influenced by thermal expansion wind loading or soil expansion contraction NetR8 GNSS Reference Receiver User Guide 31 4 Setting up the Receiver For additional information on this topic research the reference antenna installation guidelines published by e the US National Geodetic Survey http www ngs noaa gov PUBS LIB CORS guidelines pdf e the International GNSS Service http igscb jpl nasa gov network eguidelines guidelines html Connecting the receiver to external devices You can connect a NetR8 receiver to the following devices e GNSS antenna Dial up modems e Radio modems e Meteorological and tilt sensors GNSS antenna The NetR8 receiver provides a TNC type female connector for connecting to an antenna The receiver is intended for use with a Zephyr Geodetic Model 2 antenna pr a Trimble GNSS Choke Ring antenna Antenna cabling Many permanent GPS installations have unique cabling requirements Depending on the available infrastructure you may need to mount the antenna a substantial distance from the receiver The NetR8 receiver can withstand a loss of 12 dB between the antenna and the receiver The degree of loss in a coaxial cable depends on the frequency of the signal passing through it The following table lists some common types of cable and the maximum length you can use before you need an inline amplifier Cable type Maximum length for use without an inline amp
7. Azimuth AAzimuth ATime Vertical Angle AVertical ATime Range ARange ATime o NI aJ a A wj N j o GPS Quality indicator 0 Fix not available or invalid 1 Autonomous GPS fix 2 Differential floating carrier phase integer based solution RTK float 3 Differential fixed carrier phase integer based solution RTK fixed 4 Differential code phase only solution DGPS Also OmniSTAR XP HP converging SBAS solution WAAS EGNOS RTK Float 3D in a VRS Network Also OmniSTAR XP HP converged RTK Fixed 3D in a VRS Network RTK Float 2D in a VRS Network 90 I Oum 10 Number of satellites used in solution 11 PDOP 12 The checksum data always begins with 94 NetR8 GNSS Reference Receiver User Guide NMEA 0183 Output A RMC Position Velocity and Time The RMC string is shown below and Table A 13 describes the message fields GPRMC 123519 A 4807 038 N 01131 000 E 022 4 084 4 230394 003 1 W 6A Table A 13 GPRMC message fields Field Meaning 0 message ID GPRMC 1 UTC of position fix 2 Status A active or V void 3 Latitude 4 Longitude 5 Speed over the ground in knots 6 Track angle in degrees True 7 Date 8 Magnetic variation in degrees 9 The checksum data always begins with NetR8 GNSS Reference Receiver User Guide 95 A NMEA 0183 Output ROT Rate and Direction of Turn The ROT string is shown below and Table A 14 describes t
8. Safety Information Before you use your Trimble NetR8 GNSS Reference receiver make sure that you have read and understood all safety requirements Regulations and safety The receiver contains an internal radio modem for communicating signals through Bluetooth wireless technology 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 a NetR8 GNSS Reference receiver determine if authorization or a license to operate the unit is required in your country It is the responsibility of the end user to obtain an operators permit or license for the receiver for the location or country of use For FCC regulations see Notices at the front of this manual Type approval Type approval or acceptance covers technical parameters of the equipment related to emissions that can cause interference Type approval is granted to the manufacturer of the transmission equipment independent from the operation or licensing of the units Some countries have unique technical requirements for operation in particular radio modem frequency bands To comply with those requirements Trimble may have modified your equipment to be granted Type approval Unauthorized modification of the u
9. 2008 09 19 Monitor Version 0 91 Hardware Version 0 0 9 Copyright 2006 2008 Trimble Navigation Limited All rights reserved Trimble and the Globe amp Triangle logo are trademarks of Trimble Navigation Limited registered in the United atent and Trademark Office and other countries EVEREST Maxwell Zephyr and Zeph trademarks of Trimble Navigation Limited All other trademarks are the property of their respect 50 NetR8 GNSS Reference Receiver User Guide Configuring the Receiver Settings Receiver Status Activity The Receiver Status Activity screens lists several important items to help you 6 understand how the receiver is being used and its current operating condition Items include the identities of currently tracked satellites files being logged data streams being input and output the receiver s internal temperature how long the receiver has been operational power source voltages and the state of the internal battery With this information it is easy to tell exactly what functions the receiver is performing Receiver Status Activity Satellites Tracked 16 GPS 11 Ia 13 16 19 20823 25 27 GLONASS 5 7 9 10 17 19 Data Logging Internal 168266a T01 Internal 50Hz 1HR 2008 09 22 NSTR266qA T01 Internal 2008 09 22 1hz 1HR NSTR266qD TO1 IInternal 15Sec1HR 2008 09 22 4805K07252200809221600C TO1 Internal 1 Sec24HR 2008 09 22 4805K072522008092200006
10. attached to the receiver through the network Different streamed services may be configured on different ports for example with differing data rates or smoothing configurations To obtain a service the client has only to connect to a specific port In this way most users do not need to control the receiver Changing global settings such as masks will affect all users of all services However the comprehensive set of controls that has been provided for streamed service and data logging configuration avoids global changes for the majority of applications 16 NetR8 GNSS Reference Receiver User Guide Receiver Overview 2 The NetR8 receiver provides the following standard configuration and data logging services Use to perform HTTP all manual and automated configuration operations manual operations to manage the logged data file space FTP remote manual and or automated operations to manage the logged data file space NetR8 services The NetR8 receiver can provide one or more streaming or query services over a RS 232 serial port or a TCP IP port e Streaming service Anyone with authorized access can obtain streamed information such as GNSS measurements or RTCM corrections without having to control or issue commands to the receiver The client simply connects to the port that is streaming the required information Normally the port should be set to Output only mode so multiple users can connect to receive correction
11. software products information data systems interfaces or devices not made supplied or specified by Trimble ii the operation of the Product under any specification other than or in addition to Trimble s standard specifications for its products iii the unauthorized installation modification or use of the Product iv damage caused by accident lightning or other electrical discharge fresh or salt water immersion or spray or exposure to environmental conditions for which the Product is not intended or v normal wear and tear on consumable parts e g batteries Trimble does not warrant or guarantee the results obtained through the use ofthe Product NOTICE REGARDING PRODUCTS EQUIPPED WITH TECHNOLOGY CAPABLE OF TRACKING SATELLITE SIGNALS FROM SATELLITE BASED AUGMENTATION SYSTEMS SBAS WAAS EGNOS AND MSAS OMNISTAR GPS MODERNIZED GPS OR GLONASS SATELLITES OR FROM IALA BEACON SOURCES TRIMBLE IS NOT RESPONSIBLE FOR THE OPERATION OR FAILURE OF OPERATION OF ANY SATELLITE BASED POSITIONING SYSTEM OR THE AVAILABILITY OF ANY SATELLITE BASED POSITIONING SIGNALS THE FOREGOING LIMITED WARRANTY TERMS STATE TRIMBLE ENTIRE LIABILITY AND YOUR EXCLUSIVE REMEDIES RELATING TO PERFORMANCE OF THE TRIMBLE PRODUCT EXCEPT AS OTHERWISE EXPRESSLY PROVIDED HEREIN THE PRODUCT AND ACCOMPANYING DOCUMENTATION AND MATERIALS ARE PROVIDED AS IS AND WITHOUT EXPRESS OR IMPLIED WARRANTY OF ANY KIND BY EITHER TRIMBLE OR ANYONE WHO HAS BEEN
12. 23 External POWEL 144 xm ost gu oed me hx e dde esce PRE AUR Hodie eed eS 24 Battery Sales enu Aad re e PRU Bae M CR e RR ect oe e CE ee Bee i 25 Battery performance comas d Od one Ar ant wd ae menant 25 Charging the Lithium ion battery 26 Storing the Lithium ion battery 26 Removing the rechargeable Lithium ion battery 27 4 Setting up the Receiver 29 Setup guidelines usce trm ald a eal a ae Sa al Ae a S C as 30 Environmental conditions 30 Sources of electrical interference 30 Uninterruptible power supply 30 Lightning and surge protection 31 Placing the antenna sus Roe ses Must e on due dd ss ee ewe ees 31 NetR8 GNSS Reference Receiver User Guide 9 Contents Connecting the receiver to external devices 32 GNSS antenna oe sn 4 pauses dos nes 32 Dial up modems 4 sosa orma A ae eae dus e he Hu Md a ec TR ete 33 Radio Modems bicis pes eae dss 64 Oo HG Site dac E RE RUN 33 Meteorological and tilt sensors 33 Otherexternal devices 4 2 ie e best ee menant ane 34 Installing the tripod clip 34 5 Configuring the Receiver Usin
13. 5 757 646 6 175 848 6 252 863 Release Notice This is the November 2008 release Revision A of the NetR8 GNSS Reference Receiver User Guide It applies to version 3 80 of the NetR8 GNSS Reference receiver firmware Limited Warranty Terms and Conditions Product Limited Warranty Subject to the terms and conditions set forth herein Trimble Navigation Limited Trimble warrants that for a period of 1 year from date of purchase this Trimble product the Product will substantially conform to Trimble s publicly available specifications for the Product and that the hardware and any storage media components of the Product will be substantially free from defects in materials and workmanship Product Software Product software whether built into hardware circuitry as firmware provided as a standalone computer software product embedded in flash memory or stored on magnetic or other media is licensed and not sold If accompanied by a separate end user license agreement use of any such software will be subject to the terms of such end user license agreement including any differing limited warranty terms exclusions and limitations which shall control over the terms and conditions set forth in this limited warranty Software Updates During the limited warranty period you will be entitled to receive such Fix Updates and Minor Updates to the Product software that Trimble releases and makes commercially available and fo
14. 5 Hz 10 Hz and 20 Hz positioning CMR CMR RTCM 2 3 RTCM 3 1 NMEA GSOF RT17 RT27 BINEX Bluetooth type approvals are country specific Contact your local Trimble office or representative for more information 80 NetR8 GNSS Reference Receiver User Guide APPENDIX NMEA 0183 Output In this appendix This appendix describes the formats of the subset of NMEA 0183 messages that are available m NMEA 0183 message overview for output by the receivers For a copy ofthe m Common message elements NMEA 0183 Standard go to the National Marine Electronics Association website at m NMEA messages www nimea org NetR8 GNSS Reference Receiver User Guide 81 A NMEA 0183 Output NMEA 0183 message overview When 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 GNSS 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 comm
15. 9 y Enter username and password For Trimble at Xx XXX XXX XX User Name admin Password Aldo The default login values for the receiver are User Name admin Password password If you cannot connect to the receiver the password for the root account may have been changed or a different account may be being used Contact your receiver administrator for the appropriate login information 48 NetR8 GNSS Reference Receiver User Guide Configuring the Receiver Settings Once you are logged in the welcome web page see Figure 6 1 appears 6 Trimble Available languages Satellites Serial number of receiver Model name of receiver Reference station name STATION 168 NetR8 SN 4805K07252 Trimble GNSS Infrastructure Receiver Menus Data Logging Receiver Configuration Configuration Bluetooth OmniSTAR Copyright 2006 2008 Trimble Navigation Limited All rights reserved Trimble and the Globe amp Triangle logo are tradema s of Trimble Navigation Limited registered in the United States Patent and Tradema Office and other countries EVEREST Maxwell Zephyr and Zephyr Geodetic are trademads of Trimble Navigation Limited All other trademates are the property of their resp Network Configuration Security Firmware L Heip Figure 6 1 NetR8 receiver Home webpage Changing the settings Use the webpage to configure the receiver settings The web interface shows t
16. Changing the name and description of the base station The Base Name screen appears l Press to edit the name ofthe base station The name can be up to 16 characters 2 Press orto select the character to edit and then press or to change it When finished press V to accept the change 3 Press to move to the next screen The Base Code screen appears Press Y to edit the code description of the base station 4 5 Press or E to select the character to edit and press Dor to change it When finished press 6 Press to move to the next screen 38 NetR8 GNSS Reference Receiver User Guide Configuring the Receiver Using the Keypad and Display 5 Setting the reference latitude longitude and height of the base station The Base Latitude screen appears l 2 Press to edit the reference latitude of the base station Press or to select the character to edit and then press Dor to change it When finished press Press to move to the next screen The Base Longitude screen appears Press to edit the reference longitude of the base station Press Gior Gio select the character to edit and then press or to change When finished press E Press to move to the next screen The Point Height screen appears Press XZ to edit the ellipsoidal height of the base station Press or to select the character to edit and then press Dor to change When finished press E Press to move to the next screen Measu
17. Low power transmitters such as those in cell phones and two way radios normally do not interfere with receiver operations COCOM limits The U S Department of Commerce requires that all exportable GNNS 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 e 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 GNSS subsystem resets until the COCOM situation clears As a result all logging and stream configurations stop until the GNSS subsystem is cleared NetR8 GNSS Reference Receiver User Guide 19 2 Receiver Overview Keypad and display Feature Description Power LED Indicates if the receiver is turned on or off Buttons Used to turn on and configure the receiver see Button functions page 36 Display The receiver has a Vacuum Fluorescent Display This display allows you to see how the receiver is operating and view the configuration settings Bluetooth antenna Location of the Bluetooth antenna Figure 2 1 Front view of the NetR8 receiver 20 NetR8 GNSS Reference Receiver User Guide Rear connectors Receiver Overview 2 1 3 5 2 7 6 Connector type Descripti
18. THE ABOVE TRIMBLE LIMITED WARRANTY PROVISIONS WILL NOT APPLY TO PRODUCTS PURCHASED IN THOSE JURISDICTIONS SUCH AS COUNTRIES OF THE EUROPEAN ECONOMIC COMMUNITY IN WHICH PRODUCT WARRANTIES ARE OBTAINED FROM THE LOCAL DISTRIBUTOR IN SUCH CASE PLEASE CONTACT YOUR TRIMBLE DEALER FOR APPLICABLE WARRANTY INFORMATION Registration To receive information regarding updates and new products please contact your local dealer or visit the Trimble website at www trimble com register Upon registration you may select the newsletter upgrade or new product information you desire Notices Class B Statement Notice to Users This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 ofthe FCC rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communication However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more ofthe following measures Reorient or relocate the receiving antenna Increase
19. 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 4F Message values NMEA messages that the receiver generates contain the following values Latitude and longitude Latitude is represented as ddmm mmmm and longitude is represented as dddmm mmmm where e ddor dddis degrees e mmmmmm is minutes and decimal fractions of minutes Direction Direction north south east or west is represented by a single character N S E or W Time Time values are presented in Universal Time Coordinated UTC and are represented as hhmmss cc where e hhis hours from 00 through 23 mm is minutes e ss is seconds ccis hundredths of seconds NMEA messages When NMEA 0183 output is enabled the following messages can be generated NetR8 GNSS Reference Receiver User Guide 83 A NMEA 0183 Output ADV Position and Satellite information for RTK network operations An example of the ADV message string is shown below Table A 1 and Table A 2 describe the message fields The messages alternate between subtype 110 and 120 Table A 1 PGPPADV 110 39 88113582 105 07838455 1614 125 1M ADV subtype 110 message fields Field Meaning message ID PPGPADV Message sub type 110 Latitude Longitude Ellipsoid height Elevation of second satellite in degrees 90 max
20. are based on the WGS 84 datum surface Withdrawal of all electrical energy to the end point voltage before the cell or battery is recharged See real time differential GPS Differential correction is the process of correcting GPS data collected on a rover with data collected simultaneously at a base station Because the base station is on a known location any errors in data collected at the base station can be measured and the necessary corrections applied to the rover data Differential correction can be done in real time or after the data has been collected by postprocessing See real time differential GPS Dilution of Precision A measure ofthe quality of GPS positions based on the geometry of the satellites used to compute the positions When satellites are widely spaced relative to each other the DOP value is lower and position accuracy is greater When satellites are close together in the sky the DOP is higher and GPS positions may contain a greater level of error PDOP Position DOP indicates the three dimensional geometry of the satellites Other DOP values include HDOP Horizontal DOP and VDOP Vertical DOP which indicate the accuracy of horizontal measurements latitude and longitude and vertical measurements respectively PDOP is related to HDOP and VDOP as follows PDOP HDOP VDOP A type of receiver that uses both L1 and L2 signals from GPS satellites A dual frequency receiver can compute more precise posit
21. between the TNC connector marked RADIO and the radio antenna 104 NetR8 GNSS Reference Receiver User Guide Troubleshooting C Issue Possible cause Solution The receiver isnot The GNSS antenna cable Make sure that the GNSS antenna cable is tightly seated in the receiving satellite is loose antenna connection on the GNSS antenna signals The cable is damaged Check the cable for any signs of damage A damaged cable can inhibit signal detection from the antenna at the receiver The GNSS antenna is not Make sure that the GNSS antenna is located with a clear view in clear line of sight to of the sky the sky e Restart the receiver as a last resort turn off and then turn it on again NetR8 GNSS Reference Receiver User Guide 105 C Troubleshooting 106 NetR8 GNSS Reference Receiver User Guide Glossary almanac base station BINEX broadcast server carrier carrier frequency carrier phase cellular modems CMR CMR covanance A file that contains orbit information on all the satellites clock corrections and atmospheric delay parameters The almanac is transmitted by a GPS satellite to a GPS receiver where it facilitates rapid acquisition of GPS signals when you start collecting data or when you have lost track of satellites and are trying to regain GPS signals The orbit information is a subset ofthe emphemeris ephemerides data Also called reference station A base station in constructio
22. conditions Typically the internal battery provides up to 12 hours operation Note All battery operational tests are carried out with new fully charged batteries at room temperature tracking both GPS and GLONASS satellites while storing and streaming data at 1 Hz Older batteries at temperatures significantly higher or lower than room temperature will have a reduced performance Power consumption increases with an increasing number of actively tracked satellites and well as increasing observation and storage rates NetR8 GNSS Reference Receiver User Guide 23 3 Batteries and Power External power The receiver uses an external power source in preference to its internal battery If the receiver is not connected to an external power source or if the external power supply fails the internal battery is used The applied external power must offer between 9 5 V and 28 V DC and must be able to supply at least 5 W of power The receivers internal battery will only charge when the external voltage is above 15 V DC Trimble recommends that external supply voltage be above 15 V DC for long term installations This will ensure that the internal battery is charged and ready to compensate for power supply disruptions 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 re
23. data e Query service This allows bi directional communications between the receiver and another application All ports act as query ports unless Output only mode is selected When Output only mode is selected it also means the receiver is more secure especially if it is on the Internet Multiple users can connect simultaneously to a single port as long as itis set to Output only mode NetR8 GNSS Reference Receiver User Guide 17 2 Receiver Overview NetR8 receiver features The receiver provides the following features 76 channel L1 L2 L2C L5 GPS plus L1 L2 GLONASS receiver WAAS EGNOS MSAS and L band OmniSTAR Satellite Based Augmentation SBAS compatibility 4 GB on board memory Integrated battery providing up to 12 hours operation Integrated display and keypad for system configuration without a controller Integrated Bluetooth wireless technology for cable free configuration and operation Permanent semi permanent and mobile quick setup base station capability Easy to use Web interface menu system for rapid configuration and status checking Ability to operate as a Rover Integrity receiver with Trimble Infrastructure software to allow monitoring of Trimble VRS network performance Two line 16 character VFD Vacuum Fluorescent Display Rugged weatherproof construction with an IP67 environmental rating 40 C to 65 C 40 F to 149 F operating temperature range 9 5 V to 28 V DC input power range with ove
24. from 00 through 12 8 HDOP 9 Orthometric height MSL reference 10 M unit of measure for orthometric height is meters 11 Geoid separation 12 M geoid separation is measured in meters 13 Age of differential GPS data record Type 1 or Type 9 Null field when DGPS is not used 14 Reference station ID ranging from 0000 through 1023 A null field when any reference station ID is selected and no corrections are received 15 The checksum data always begins with NetR8 GNSS Reference Receiver User Guide 85 A NMEA 0183 Output GSA GPS DOP and active satellites An example of the GSA message string is shown below Table A 4 describes the message fields Table A 4 GPGSA lt 1 gt lt 2 gt lt 3 gt lt 3 gt lt 3 gt lt 3 gt lt 3 gt lt 4 gt lt 5 gt lt 6 gt lt 7 gt lt CR gt lt LF gt GSA message fields Field Meaning 0 message ID GPGSA 1 Mode 1 M manual A automatic Mode 2 Fix type 1 not available 2 2D 3 3D PRN number 01 through 32 of satellite used in solution up to 12 transmitted PDOP Position dilution of precision 0 5 through 99 9 HDOP Horizontal dilution of precision 0 5 through 99 9 VDOP Vertical dilution of precision 0 5 through 99 9 o ui A W N The checksum data always begins with 86 NetR8 GNSS Reference Receiver User Guide GST NMEA 0183 Output A Position Error Statistics An example of the GST message string
25. is shown below Table A 5 describes the message fields GPGST 172814 0 0 006 0 023 0 020 273 6 0 023 0 020 0 031 6A Table A 5 GST message fields Field Meaning 0 message ID GPGST 1 UTC of position fix 2 RMS value of the pseudorange residuals includes carrier phase residuals during periods of RTK float and RTK fixed processing Error ellipse semi major axis 1 sigma error in meters Error ellipse semi minor axis 1 sigma error in meters Error ellipse orientation degrees from true north Latitude 1 sigma error in meters Longitude 1 sigma error in meters Height 1 sigma error in meters WO CO NI md wo AJ uu The checksum data always begins with NetR8 GNSS Reference Receiver User Guide 87 A NMEA 0183 Output GSV Satellite Information The GSV message string identifies the number of SVs in view the PRN numbers elevations azimuths and SNR values An example ofthe GSV message string is shown below Table A 6 describes the message fields GPGSVA 1 13 02 02 213 03 3 000 11 00 121 14 13 172 05 67 Table A 6 GSV message fields Field Meaning 0 message ID GPGSV 1 Total number of messages of this type in this cycle 2 Message number 3 Total number of SVs visible 4 SV PRN number 5 Elevation in degrees 90 maximum 6 Azimuth degrees from True North 000 through 359 7 SNR 00 99 dB null when not tracking 8 11 I
26. of satellites used in solution 12 The checksum data always begins with 90 NetR8 GNSS Reference Receiver User Guide NMEA 0183 Output A PTNL GGK Time Position Position Type DOP An example of the PTNL GGK message string is shown below Table A 9 describes the message fields PTNL GGK 172814 00 071296 3723 46587704 N 12202 26957864 W 3 06 1 7 EHT 6 777 M 48 Table A 9 PTNL GGK message fields Field Meaning 0 message ID PTNL GGA UTC of position fix Date 1 2 3 Latitude 4 Direction of latitude N North S South Longitude 6 Direction of Longitude E East W West 7 GPS Quality indicator 0 Fix not available or invalid 1 Autonomous GPS fix 2 Differential floating carrier phase integer based solution RTK float 3 Differential fixed carrier phase integer based solution RTK fixed 4 Differential code phase only solution DGPS Also OmniSTAR XP HP converging 5 SBAS solution WAAS EGNOS 6 RTK Float 3D in a VRS Network Also OmniSTAR XP HP converged 7 RTK Fixed 3D in a VRS Network 8 RTK Float 2D in a VRS Network 8 Number of satellites in fix 9 DOP of fix 10 Ellipsoidal height of fix 11 M ellipsoidal height is measured in meters 12 The checksum data always begins with Note The PTNL GGK message is longer than the NMEA 0183 standard of 80 characters NetR8 GNSS Reference Receiver User Guide 91 A 92 NMEA 0183 Output PTNL PJ
27. one minute For example if data is measured every 15 seconds loading data using 30 second epochs means loading every alternate measurement A feature is a physical object or event that has a location in the real world which you want to collect position and or descriptive information attributes about Features can be classified as surface or non surface features and again as points lines breaklines or boundaries areas The program inside the receiver that controls receiver operations and hardware Global Orbiting Navigation Satellite System GLONASS is a Soviet space based navigation system comparable to the American GPS system The operational system consists of 21 operational and 3 non operational satellites in 3 orbit planes Global Navigation Satellite System General Serial Output Format A Trimble proprietary message format Horizontal Dilution of Precision HDOP is a DOP value that indicates the accuracy of horizontal measurements Other DOP values include VDOP vertical DOP and PDOP Position DOP Using a maximum HDOP is ideal for situations where vertical precision is not particularly important and your position yield would be decreased by the vertical component of the PDOP for example if you are collecting data under canopy The primary L band carrier used by GPS satellites to transmit satellite data The secondary L band carrier used by GPS satellites to transmit satellite data The third L band carrier used by GPS
28. required file names before double clicking to start the download To select all files click the Select All button To delete files select the checkbox to the right of all files to be deleted and then click the Delete Selected Files button NetR8 GNSS Reference Receiver User Guide 57 6 Configuring the Receiver Settings The following six file naming options are available in the NetR8 receiver Name style Description HHHHIIIX THHHHHHHHHEY Y Y YMMDDhhmm SITEJJJh SITEJJJhmm YYMMDDhh YYMMDDhhmm Last four digits of receiver serial number 3 digit Julian calendar day alphabetic session identifier Receiver serial number 4 digit year 2 digit month 2 digit day 2 digit hour 2 digit minute of file start 4 character site identifier 3 digit Julian calendar day single letter hour of day identifier 4 character site identifier 3 digit Julian calendar day single letter hour of day identifier 2 digit minute of the hour of file start 2 digit year 2 digit month 2 digit day 2 digit hour of file start 2 digit year 2 digit month 2 digit day 2 digit hour 2 digit minute of file start Data Logging File Protection Use the Data Logging File Protection screen to configure the protection of stored data files when an event signal is received This feature allows important data to be protected from the standard memory pool automatic deletion function The idea is that an event input from an external sensor
29. satellites to transmit satellite data L5 will provide a higher power level than the other carriers As a result acquiring and tracking weak signals will be easier MTSAT Satellite Based Augmentation System A satellite based augmentation system SBAS that provides a free to air differential correction service for GPS MSAS is the Japanese equivalent of WAAS which is available in the United States A type of receiver that uses multiple carrier phase measurements L1 L2 and L5 from different satellite frequencies Interference similar to ghosts on a television screen that occurs when GPS signals arrive at an antenna having traversed different paths The signal traversing the longer path yields a larger pseudorange estimate and increases the error Multiple paths can arise from reflections off the ground or off structures near the antenna National Marine Electronics Association NMEA 0183 defines the standard for interfacing marine electronic navigational devices This standard defines a number of strings referred to as NMEA strings that contain navigational details such as positions Most Trimble GPS receivers can output positions as NMEA strings The OmniSTAR HP XP service allows the use of new generation dual frequency receivers with the OmniSTAR service The HP XP service does not rely on local reference stations for its signal but utilizes a global satellite monitoring network Additionally while most current dual frequency GPS sy
30. such as a seismic detector will protect data from automatic deletion for a time period before and after the event This ensures that this data is available for later study You must manually delete protected data to remove it from system memory File Protection Enable v Protect Before Events 60 Minutes Protect After Events 60 Minutes 58 NetR8 GNSS Reference Receiver User Guide Configuring the Receiver Settings 6 Data Logging FTP Push Use the Data Logging FTP Push screen to configure the receiver to push stored files to the FTP server of your choice Only files that are configured to use FTP push are transmitted FTP Push Server Address Username anonymous Password Verify Password Remote Directory Path Style Flat v Rename No v Data Logging FTP Push Log The Data Logging FTP Push Log screen shows the status of all FTP Push operations Receiver Configuration menu Use the Receiver Configuration menu to configure settings such as elevation mask and PDOP mask the antenna type and height the reference station position and the reference station name and code Receiver Configuration Reference Station Application Files Default Language NetR8 GNSS Reference Receiver User Guide 59 6 Configuring the Receiver Settings Receiver Configuration Summary The Receiver Configuration Summa
31. the receiver at temperatures outside the range 40 C to 70 C 40 F to 158 F The receiver has an internal Lithium ion battery The internal battery will only charge from an external power source that delivers more than 15 volts for example an AC power adaptor The receiver is supplied with a mains power supply unit that recharges the battery inside the receiver when it is connected through the adaptor to either of the Lemo ports When you use the receiver in a long term deployment Trimble recommends that you use this power supply or another that provides at least 15 V DC at all times to keep the internal battery charged This will ensure that the internal battery provides an uninterrupted power supply that will keep the receiver operational for up to 12 hours after a power failure Keep all batteries on continuous charge when not in use You can keep batteries on charge indefinitely without damage to the receiver or to the batteries 26 NetR8 GNSS Reference Receiver User Guide Batteries and Power 3 Removing the rechargeable Lithium ion battery The internal Lithium ion battery should be removed only at an authorized Trimble Service Center Ifthe battery is removed at an unauthorized service center the remaining warranty on the product will be void NetR8 GNSS Reference Receiver User Guide 27 3 Batteries and Power 28 NetR8 GNSS Reference Receiver User Guide CHAPTER Setting up the Receiver In this chapter Set
32. the separation between the equipment and the receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Changes and modifications not expressly approved by the manufacturer or registrant of this equipment can void your authority to operate this equipment under Federal Communications Commission rules Canada This Class B digital apparatus complies with Canadian ICES 003 Cet appareil num rique de la classe B est conforme la norme NMB 003 du Canada This apparatus complies with Canadian RSS 310 and RSS 210 Cet appareil est conforme la norme CNR 310 et CNR 210 du Canada Europe This product is intended to be used in all EU member countries This product has been tested and found to comply with the requirements for a Class B device pursuant to European Council Directive 89 336 EEC on EMC thereby satisfying the requirements for CE Marking and sale within the European Economic Area EEA Contains Infineon radio module PBA 31307 These requirements are designed to provide reasonable protection against harmful interference when the equipment is operated in a residential or commercial environment Australia and New Zealand This product conforms with the regulatory requirements of the Australian Communications Authority ACA EMC framework thus satisfying the requirements for C Tick Marking and sale w
33. to select the number to edit and then press Dor to change When finished press E Note Editing starts from the right 10 11 12 Press o move to the next screen The subnet mask is shown Press to edit the subnet mask address Press rG to select the number to edit and then press Dor to change When finished press E Note Editing starts from the right 13 14 15 Press to move to the next screen The gateway is shown Press XZ to edit the default gateway address Press orto select the number to edit and press Dor to change When finished press E Note Editing starts from the right 16 Press to move to the next screen The Home screen appears Ethernet setup is now complete Note Ifyou change the IP address restart the receiver for the changes to take effect NetR8 GNSS Reference Receiver User Guide 41 5 Configuring the Receiver Using the Keypad and Display You can also use the keypad to configure the system setup or to view the satellite SV status using the same process as outlined in this chapter Setting up the receiver to log data The NetR8 receiver can be set up to log data using the front panel The receiver supports up to five independent sessions Only the Default session parameters can be configured using the front panel The remaining four sessions can be activated from the front panel but their configuration must be performed beforehand using the web interface
34. 1498 GPS Seconds 145429 Offset 0 00000 msec Drift 0 00001 ppm Multi System Clock Offsets Master Clock System GPS Velocity East 0 01 m s North 0 03 m s Up 0 02 m s 1 Sigma Estimates Horizontal 3 426 m East 1 698 m North 2 976 m Up 4 653 m Dilutions of Precision PDOP 1 8 HDOP 1 1 VDOP 1 5 MBs pt Receiver Status Vector The Receiver Status Vector screen provides information on the vector between the NetR8 receiver and its RTK reference station Receiver Status Google Earth The Receiver Status Google Earth menu allows the user to request a Google Earth position marker file for the reference receiver position This kmz file can be easily imported into Google Earth to allow that software to display the receivers location on a map or aerial view NetR8 GNSS Reference Receiver User Guide Configuring the Receiver Settings 6 Satellites menu Use the Satellites menu to view satellite tracking details and Satellites enable disable GPS GLONASS and SBAS WAAS EGNOS General Tracking Table and MSAS satellites Tracking Graph These menus include tabular and graphical displays to IA provide all needed information on satellite tracking status GLN Enable Disable Within this menu it is possible to SBAS Enable Disable Satellite Almanacs Predicted Elevation Predicted Constellation Current Constellation Ground Track e Manually disable the tracking of satel
35. Flash listed below Select a device and PC serial portto use and press Next to continue Device Configuratior Device type 5800 Receiver NetRS Receiver Trimble R Receiver Trimble R8 Receiver EC serial port com v us cms wo c Click Next NetR8 GNSS Reference Receiver User Guide 45 6 Configuring the Receiver Settings 6 Fromthe Operation Selection screen select Configure ethernet settings and then click Next NeiR5 v3 10 b7 Supervisor Trimble Operation Selection The operations supported by the Trimble NetR5 Receiver are listed below Select an operation to perform and press Next to continue Operations Change system name Configure ethemet settings Load GPS software Make password to clear serial number Make password to set options Pronram receiver confianration Description Configure the ethernet settings 7 From the Settings Review screen click Finish WinFlash Settings Review WinFlash 2 Trimble Connect the NetRB to COM1 of the PC usng the DBS cable Review the settings below and press Finish to start the Corfigure ethernet settings r Current Settings Devce configuration Trimble NetR5 Receiver connected to COM1 Operation to perform Configure ethernet settings Cancel Help Lotes Once the WinFlash utility connects to the receiver the Ethernet Configu
36. INVOLVED INITS CREATION PRODUCTION INSTALLATION OR DISTRIBUTION INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TITLE AND NONINFRINGEMENT THE STATED EXPRESS WARRANTIES ARE IN LIEU OF ALL OBLIGATIONS OR LIABILITIES ON THE PART OF TRIMBLE ARISING OUT OF ORIN CONNECTION WITH ANY PRODUCT SOME STATES AND JURISDICTIONS DO NOT ALLOW LIMITATIONS ON DURATION OR THE EXCLUSION OF AN IMPLIED WARRANTY SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU Limitation of Liability TRIMBLE S ENTIRE LIABILITY UNDER ANY PROVISION HEREIN SHALL BE LIMITED TO THE AMOUNT PAID BY YOU FOR THE PRODUCT TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW IN NO EVENT SHALL TRIMBLE ORITS SUPPLIERS BE LIABLE FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGE WHATSOEVER UNDER ANY CIRCUMSTANCE OR LEGAL THEORY RELATING IN ANYWAY TO THE PRODUCTS SOFTWARE AND ACCOMPANYING DOCUMENTATION AND MATERIALS INCLUDING WITHOUT LIMITATION DAMAGES FOR LOSS OF BUSINESS PROFITS BUSINESS INTERRUPTION LOSS OF DATA OR ANY OTHER PECUNIARY LOSS REGARDLESS OF WHETHER TRIMBLE HAS BEEN ADVISED OF THE POSSIBILITY OF ANY SUCH LOSS AND REGARDLESS OF THE COURSE OF DEALING WHICH DEVELOPS OR HAS DEVELOPED BETWEEN YOU AND TRIMBLE BECAUSE SOME STATES AND JURISDICTIONS DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES THE ABOVE LIMITATION MAY NOT APPLY TO YOU PLEASE NOTE
37. K Local Coordinate Position Output An example of the PTNL PJK message string is shown below Table A 10 describes the message fields Table A 10 PTNL PJK 010717 00 081796 732646 511 N 1731051 091 E 1 05 2 7 EHT 28 345 M 7C PTNL PJK message fields Field Meaning message ID PTNL PJK UTC of position fix Date Northing in meters Direction of Northing will always be N North Easting in meters Direction of Easting will always be E East N N wy B WI NI O GPS Quality indicator 0 Fix not available or invalid 1 Autonomous GPS fix 2 Differential floating carrier phase integer based solution RTK float 3 Differential fixed carrier phase integer based solution RTK fixed 4 Differential code phase only solution DGPS Also OmniSTAR XP HP converging SBAS solution WAAS EGNOS RTK Float 3D in a VRS Network Also OmniSTAR XP HP converged RTK Fixed 3D in a VRS Network RTK Float 2D in a VRS Network 90 ev unt 8 Number of satellites in fix 9 DOP of fix 10 Ellipsoidal height of fix 11 M ellipsoidal height is measured in meters 12 The checksum data always begins with Note The PTNL PJK message is longer than the NMEA 0183 standard of 80 characters NetR8 GNSS Reference Receiver User Guide NMEA 0183 Output A PTNL VGK Vector Information An example of the PTNL VGK message string is shown below Table A 11 describe
38. Reference Receiver User Guide CHAPTER Configuring the Receiver Using the Keypad and Display In this chapter Button functions Power button operations Home screen Status screens Setting up the receiver as a base station Setting up the receiver as part of an Ethernet configuration Setting up the receiver to log data The NetR8 receiver features a front panel user interface with a keypad and as two line alphanumeric display see page 20 This interface allows you to configure many ofthe receivers features without using an external controller or computer NetR8 GNSS Reference Receiver User Guide 35 5 Configuring the Receiver Using the Keypad and Display Button functions The NetR8 has seven buttons on the front panel to control the receiver Use the buttons to turn the receiver on and off and to check or change the receiver settings Button Name Function Power Turn the receiver on off To turn the receiver off hold the power button for two seconds Escape Return to the previous screen or cancel changes being made on a screen Enter Advance to the next screen or accept changes made on a screen Up Move the cursor between multiple fields on a screen or make changes Down Move the cursor between multiple fields on a screen or make changes Left Move the cursor between characters in an editable field Right Move the cursor between characters in an editable field This button a
39. T01 Input Output Output TCP IP 5017 RT27 1Hz Output TCP IP 5019 CMR Temperature 35 34 C Runtime 00 49 03 Power Source Port 2 Disk 2324168KB 3932160KB Port 2 100 17 84V Port 3 0 O 00V Ethernet 0 0 004 Battery 1 10096 8 24V 2008 09 22T 16 21 43Z UTC NetR8 GNSS Reference Receiver User Guide 51 6 Configuring the Receiver Settings 52 Receiver Status Position The Receiver Status Position screen provides all relevant information pertaining to the receivers position solution If the NetR8 receiver is operating as a reference station this information may be of minimal concern however if the receiver is acting as a Rover Integrity Monitor this menu provides all ofthe information needed to assess the quality of the receivers RTK position and therefore the quality of network correctors Position Lat 39 53 52 80519 N Lon 105 6 45 48629 W Hat 1664 514 m Type Autonomous Datum WGS 84 Position Solution Detail Position Dimension 3D Position Type Autonomous Motion Info N A Augmentation GPS RTK Solution NA RTK Init N A RTK Mode NA RTK Network Mode NA Age of Corrections NA Height Mode Normal 2008 09 22T16 23 35Z UTC Receiver Status Position Satellites Used 10 GPS 10 3 6 7 8 13 16 19 23 25 27 Satellites Tracked 15 GPS 10 316 7 8 13 16 192325 27 GLONASS 5 7 9 10 17 19 Receiver Clock GPS Week
40. True vertical Resetting the receiver to factory defaults To reset the receiver to its factory defaults press VZ for 35 seconds Using application files to duplicate receiver settings The NetR8 receiver allows the extensive use of application files in order to retain a unique receiver configuration With the NetR8 you can create an application file that includes most of the receiver s unique configuration settings That application file can then be copied and placed on another NetR8 receiver to quickly configure it to match the first receiver For settings that are not stored in an application file there are also clone files Clone files allow you to capture all ofthe settings not included in the application file Both the clone file and the application file can be loaded onto other NetR8 receivers to give 70 NetR8 GNSS Reference Receiver User Guide Default Settings and Application Files 7 them the exact configuration as the first receiver This is called receiver configuration cloning or cloning Receiver cloning greatly reduces the time required to prepare a large group of receivers for field operations The Application Files submenu select Receiver Configuration Application Files provides the required tools to use these features There are two variable fields e Filename allows you to enter a unique name for a stored configuration file e Operation allows you to select a particular operation from a drop down l
41. USER GUIDE Trimble NetR8 GNSS Reference Receiver Trimble USER GUIDE Trimble NetR8 GNSS Reference Receiver Version 3 80 Revision A November 2008 Trimble Corporate Office Trimble Navigation Limited 935 Stewart Drive Sunnyvale CA 94085 USA www trimble com Survey Business Area Trimble Navigation Limited Survey Business Area 5475 Kellenburger Road Dayton Ohio 45424 1099 USA 800 538 7800 toll free in USA 1 937 245 5600 Phone 1 937 233 9004 Fax www trimble com E mail trimble_support trimble com Legal Notices 2008 Trimble Navigation Limited All rights reserved Trimble and the Globe amp Triangle logo are trademarks of Trimble Navigation Limited registered in the United States and in other countries CMR CMR GPSNet Maxwell TRIMCOMM TRIMMARK TRIMTALK TSC2 VRS Zephyr and Zephyr Geodetic are trademarks of Trimble Navigation Limited The Bluetooth word mark and logos are owned by the Bluetooth SIG Inc and any use of such marks by Trimble Navigation Limited is under license Microsoft Windows and Windows NT are either registered trademarks or trademarks of Microsoft Corporation in the United States and or other countries All other trademarks are the property of their respective owners This product and its contained technologies are protected by the following US patents 5 148 179 5 187 450 5 202 694 5 311 149 5 402 450 5 493 588 5 515 057 5 519 620 5 602 741
42. a PoE connection the DC voltage must be limited to 57 VDC 0 under both normal and single fault conditions This product may present an electrical hazard if the recommended input voltage is exceeded NetR8 GNSS Reference Receiver User Guide 7 Safety Information DC power supply safety A WARNING When DC voltage is applied to this product through connectors 2 or 3 Lemo connectors the DC voltage must be limited to 28 V DC 0 under both normal and single fault conditions This product may present an electrical hazard if the recommended input voltage is exceeded Wet location safety A WARNING This product is not intended to be used in a wet location or a location that may become wet when it is powered by the PoE interface or by the an external DC power supply The product should only be used in a wet location when operating on it own internal battery A WARNING The external power adapter and its associated power cord and plug are not intended to be installed outdoors nor in a wet location WARNING Do not power the receiver through external power when operating in a wet environment or an environment that may become wet The power input connections must be sheltered gt 8 NetR8 GNSS Reference Receiver User Guide Contents Safety Information 5 Regulations and safety uuu se Deu uy oy cea A pn UR e Te S 5 Typedapptoval ebanista oe SCR e Erde mise ds Rag dc c Up em nine til 5 Exposure
43. as 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 Message Function Page ADV Position and Satellite information for RTK network operations 84 GGA Time position and fix related data 85 GSA GPS DOP and active satellites 86 GST Position error statistics 87 GSV Number of SVs in view PRN elevation azimuth and SNR 88 HDT Heading from True North 89 PTNL AVR Time yaw tilt range mode PDOP and number of SVs for 90 Moving Baseline RTK PTNL GGK Time position position type and DOP values 91 PTNL PJK Local coordinate position output 92 PTNL VGK Time locator vector type and DOP values 93 PTNL VHD Heading Information 94 RMC Position Velocity and Time 95 ROT Rate of turn 96 VTG Actual track made good and speed over ground 97 ZDA UTC day month and year and local time zone offset 98 82 NetR8 GNSS Reference Receiver User Guide NMEA 0183 Output A Common message elements Each message contains e a message ID consisting of GP followed by the message type For example the message ID of the GGA message is GPGGA e acomma e anumber of fields depending on the message type separated by commas e anasterisk e achecksum value Below is
44. ble Lithium ion battery is supplied partially charged 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 The internal battery charges fully in 24 hours when connected to a suitable power source A WARNING Charge and use the rechargeable Lithium ion battery only in strict accordance with the instructions Charging or using the battery in unauthorized equipment can cause an explosion or fire and can result in personal injury and or equipment damage To prevent injury or damage Do not charge or use the battery if it appears to be damaged or leaking Charge the Lithium ion battery only within the NetR8 receiver The battery can only be removed by an authorized Trimble Service Center Storing the Lithium ion battery If 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
45. caused by electrical surges occurs in many permanent installations even though surge protection is in place Commonly this is because the grounding system used was designed to protect against AC electrical hazards rather than to dissipate the sudden high current surges caused by lightning Please consult with a lightning protection expert or research the topic when planning permanent installations For more information contact your local Trimble Infrastructure dealer or go to the websites of surge protection and grounding system manufacturers Trimble customers have reported good results when using products from the following manufacturers e Polyphaser www polyphaser com e Huber and Suhner www hubersuhner com e Harger www harger com e Hyperlink Technologies www hyperlinktech com Placing the antenna The antenna location will have a significant effect on the quality of your NetR8 receivers performance In temporary devlopments it may not always be possible to set up on an ideal location with an excellent sky view However when installing a permanent station be sure to plan the antenna location and mounting system carefully The general requirements for the antenna location and mount are e Clear sky from the zenith to the horizon to a 100 m 328 feet radius in all directions 360 degrees e Mounted 1 5 m 5 feet above any nearby signal reflectors e Separation of at least 300 m 984 feet from radio signal transmitters
46. content of the signal relative to the signal s noise The typical SNR of a satellite at 30 elevation is between 47 and 50 dBHz The quality of a GPS position is degraded if the SNR of one or more satellites in the constellation falls below 39 The satellite skyplot confirms reception of a differentially corrected GPS signal and displays the number of satellites tracked by the GPS receiver as well as their relative positions See signal to noise ratio Universal Time Coordinated A time standard based on local solar mean time at the Greenwich meridian 110 NetR8 GNSS Reference Receiver User Guide WAAS WGS 84 Glossary Virtual Reference Station A VRS system consists of GNSS hardware software and communication links It uses data from a network of reference stations to provide corrections to each rover that are more accurate than corrections from a single base station To start using VRS corrections the rover sends its position to the VRS server The VRS server uses the reference station data to model systematic errors such as ionospheric noise at the rover position It then sends RTCM or CMR correction messages back to the rover Wide Area Augmentation System WAAS was established by the Federal Aviation Administration FAA for flight and approach navigation for civil aviation WAAS improves the accuracy and availability ofthe basic GPS signals over its coverage area which includes the continental United States and outlyi
47. d login for configuration changes and or file access Use the network management features to create a base configuration with a variety of operating modes You can then enable those modes as necessary instead of switching the global state of the receiver from one mode to another For example you can configure a number of streaming services with different configurations such as measurement intervals or smoothing controls on different TCP or UDP ports To activate one or more modes open the connection to the specific port This allows multiple clients to access any given streaming service These features and many more shift the model of a GNSS receiver toward the concept of a network appliance The network appliance concept Traditionally a GNSS receiver has one operator That person is the only user of the receiver so they can change settings without affecting other users With the NetR8 receiver an operator can configure a receiver once then make it available as a network appliance for general use by one or more users or clients This network appliance concept lets you set up the receiver to provide one or more services that one or more users can access through a Local Area Network LAN or a Wide Area Network WAN such as the Internet Once the receiver is set up you need make only minimal changes if any to the receiver configuration When the receiver is operating as a network appliance it provides services to all users
48. during the warranty period Trimble at its option will repair OR replace the nonconforming Product OR refund the purchase price paid by you for the Product upon your return ofthe Product to Trimble in accordance with Trimble s standard return material authorization procedures How to Obtain Warranty Service To obtain warranty service for the Product please contact your Trimble dealer Alternatively you may contact Trimble to request warranty service at 1 408 481 6940 24 hours a day or e mail your request to trimble_support trimble com Please be prepared to provide your name address and telephone numbers proof of purchase this Trimble warranty card a description of the nonconforming Product including the model number anexplanation of the problem The customer service representative may need additional information from you depending on the nature of the problem Warranty Exclusions and Disclaimer This Product limited warranty shall only apply in the event and to the extent that i the Product is properly and correctly installed configured interfaced maintained stored and operated in accordance with Trimble s applicable operators manual and specifications and ii the Product is not modified or misused This Product limited warranty shall not apply to and Trimble shall not be responsible for defects or performance problems resulting from i the combination or utilization of the Product with hardware or
49. e Keypad and Display Setting up the receiver as a base station The NetR8 receiver can be set up for Ethernet configuration and for real time outputs so that the receiver can be used as a base station also known as a reference station To set up the receiver as a base station use the receiver keypad The receiver uses a step by step configuration method to ensure that all appropriate settings are reviewed and set Press to move between steps in the configuration process Configuring the receiver as a base station 1 From the Home screen press to move to the next screen The Operation Mode screen appears Use this screen to configure the reference station setup Ethernet configuration system setup or to view the SV satellite status 2 As reference station setup is the default press amp to move to the next screen The Base Station screen appears Use this screen to select if the receiver is going to use a Here position or if the current coordinates in the receiver will be edited 3 Dooneofthe following Press SZ to edit the current position Edit Current begins to flash This indicates that you can now edit this setting Press to change to New Base Here Press amp amp to accept the change The current coordinates that the receiver is using will be used as the base station coordinates Continue to the next step and manually enter the coordinates Press again 4 Press to move to the next screen
50. e power supply Trimble recommends that you use an uninterruptible power supply UPS to power the receiver The internal battery can also operate as a UPS for up to 12 hours A UPS protects the equipment from power surges and spikes and keeps the receiver running during short power outages Items operating with the receiver such as an Ethernet switch should also be on a UPS to provide uninterrupted operation For more information contact your local Trimble dealer 30 NetR8 GNSS Reference Receiver User Guide Setting up the Receiver 4 Lightning and surge protection Trimble recommends that you install lightning protection equipment at permanent sites All connections to the receiver should have surge protection Typically the minimum protection should include a surge protector in the antenna feed line on the Ethernet connection between the receiver and the local area network as well as on the receivers power supply system If serial devices are attached to the receiver those serial connections should also be provided with surge protection Also protect any communications and power lines at building entry points If you use other antennas such as a radio modem that distributes real time correction messages or a last mile radio install surge protection on those antenna feeds as well No surge protection devices can offer protection unless they are connected to an excellent ground using very low impedance conductors Equipment damage
51. eb user interface Meteorological and tilt sensors You can connect an external meteorological or tilt sensor to any of the three available serial ports on the NetR8 receiver The sensor responds to a request for information The request and the response are time tagged and are entered into the NetR8 receiver s stored files and streamed observation data Note The sensors serial configuration must include 8 data bits Some sensors default to 7 data bits and this is incompatible with the NetR8 receiver Supported sensors include the following e Paroscientific Met3 Met3A Met4 and Met4A e Vaisala PTU300 e Applied Geomechanics D700 and MD900 series The 7 0 Configuration Port Configuration menu allows you to enter the serial port settings and control commands for a meteorological tilt sensor NetR8 GNSS Reference Receiver User Guide 33 4 Setting up the Receiver Other external devices For all other external devices connect to a suitable communications port and then configure that port for the connected device Installing the tripod clip For campaign operations or temporary base deployments the standard mounting base can be replaced with a tripod clip 1 Removethe standard mounting base by unscrewing the four bottom screws that are located beneath the rubber end cap trim 2 Use the two provided screws to attach the tripod clip to the two holes located at the bottom of the front panel of the receiver 34 NetR8 GNSS
52. en finished press Press to move to the next screen Outputting observations The R727 screen appears 1 When you have configured the data logging configuration press C7 to set up RT27 message output from the receiver 2 Press Dor to select the output port Press Gto accept 3 Press to move the cursor to the output rate Press Oto edit and then press Dor to select the rate at which RT27 messages will be output Press Oro accept 4 Press to move to the next screen The Home screen appears Base station setup is now complete 40 NetR8 GNSS Reference Receiver User Guide Configuring the Receiver Using the Keypad and Display 5 Setting up the receiver as part of an Ethernet configuration L From the Home screen press The Operation Mode screen appears Use this screen to select if you want to configure the base station setup Ethernet configuration or system setup or to view the SV status As reference station setup is the default press so that the Ref Stn Setup message is flashing Press to select Ethernet config Press twice to edit the configuration The DHCP menu appears Press XZ to select the type of IP address to set up Press or W to move through the options You can choose either Enabled the default or Static IP address to program the Ethernet manually When finished press Press to move to the next screen The IP address appears Press XZ to edit the IP address Press or
53. ernet Boot Configuration Clone HTTP Configuration Clones all security settings on the source receiver See the Security menu e All system users with Username Password and access settings Security status Enable Enable with Anonymous Access Disable Clones all Input Output stream configurations from the source receiver See the O Configuration menu e TCP IP Port e NTripClient e NTripServer e NTripCasters Serial ports Bluetooth ports If the Maintain configuration when connection dropped switch is set Note The source receiver s clone files will not overwrite any ports currently configured on the recipient receiver Clones all Ethernet settings of the source receiver See the Network Configuration Ethernet menu e IP Setup DHCP Static IP e IP Address e Netmask e Broadcast e Gateway Force DNS Address switch e DNS Address DNS Domain Note If the source receiver has a static IP address you may need to edit the static IP address of the recipient receiver after the clone file is passed to that recipient Clones all HTTP and HTTPS settings of the source receiver See the Network Configuration HTTP menu e HTTP Enable switch e HTTP Server Port e HTTPS Secure Enable switch e HTTPS Secure Port Certificate Information NetR8 GNSS Reference Receiver User Guide 73 7 Default Settings and Application Files Generate Clone File selection Affected items Clone Email A
54. figuration Application Files screen to configure all of the settings that make up an application file save that file and select an application file for use Application Files Executing App File Name CMPGN 9 Operation Start Now Filename CURRENT M Current Timer Setting Disabled See also Chapter 7 for a complete description of this process Receiver Configuration Reset Use the Receiver Configuration Reset screen to completely or partially reset the receiver Receiver Reset Use Default Appfile Clear Satellite Data Clear Application Files Clear All Receiver Settings Receiver Reset NetR8 GNSS Reference Receiver User Guide 63 6 Configuring the Receiver Settings Receiver Configuration Default Language Use the Receiver Configuration Default Language screen to select the language that the receiver will display on start up 1 0 Configuration menu Use the O Configuration menu to set up all outputs of the receiver The receiver can output CMR RTCM NMEA GSOF RT17 RT27 or BINEX messages These messages can be output on TCP IP UDP serial or Bluetooth ports This figure shows an example of the screen that appears when you select O Configuration Port Summary I O Configuration Bluetooth menu Use the Bluetooth menu to configure Bluetooth settings This figure shows an example of the screen that appears when you select Bluetooth Info
55. from a GPS base station to a rover GPS receiver to provide sub meter position accuracy The rover receiver can be at along range greater than 100 kms 62 miles from the base station See base station A rover is any mobile GPS receiver that is used to collect or update data in the field typically at an unknown location Roving mode applies to the use of a rover receiver to collect data stakeout or control earthmoving machinery in real time using RTK techniques Radio Technical Commission for Maritime Services A commission established to define a differential data link for the real time differential correction of roving GPS receivers There are three versions of RTCM correction messages All Trimble GPS receivers use Version 2 protocol for single frequency DGPS type corrections Carrier phase corrections are available on Version 2 or on the newer Version 3 RTCM protocol which is available on certain Trimble dual frequency receivers The Version 3 RTCM protocol is more compact but is not as widely supported as Version 2 real time kinematic A real time differential GPS method that uses carrier phase measurements for greater accuracy Satellite Based Augmentation System SBAS is based on differential GPS but applies to wide area WAAS EGNOS and MSAS networks of reference stations Corrections and additional information are broadcast via geostationary satellites SNR The signal strength of a satellite is a measure of the information
56. g the Keypad and Display 35 Button TUNCHONS ss da a ba Tg t ee taie ce ete he ee ec te e 36 Power button operations 36 Homescreen esi e pae Gee seeds Soe dee Dh Pa ede eat eed 37 Stab s SCREENS icu acu xov ob eer ee sr de Sox den dde o oo RR e 37 Setting up the receiver as a base station 38 Configuring the receiver as a base station 38 Setting up the receiver as part of an Ethernet configuration 41 Setting up the receiver to log data 42 En blinglossing Sessions 34 144 Ry Ra des pins Y UR RR pipi 42 6 Configuring the Receiver Settings 43 Configuring Ethernet settings 44 Configuring the NetR8 receiver using a web browser 47 Supported browsers segs ba men es se Hein ke e BOR EROR CRUS 47 Changing the settings esee ho ye dex a e ck a Te FUR GS da Pond 49 7 Default Settings and Application Files 69 Default receiver settings 70 Resetting the receiver to factory defaults 70 Using application files to duplicate receiver settings 70 B SDeOhcalolis 2202 caw Shwe Roe UR oO Re states 77 General specifications
57. gs but they cannot make changes 66 NetR8 GNSS Reference Receiver User Guide Configuring the Receiver Settings 6 This figure shows an example of the screen that appears when you select Security Configuration Security Configuration Security Disable y ox Co m Je I Is I Ls L O FieldUser O ir o o Add User Username Password Verify Password Edit User File Download File Delete Receiver Config NTripCaster O O O Oo Firmware menu Use the Firmware menu to verify the current firmware and load new firmware to the receiver You can upgrade firmware across a network or from a remote location without having to connect to the receiver with a serial cable This figure shows an example of the screen that appears when you select Firmware Install New Firmware Firmware Warranty Date 2009 09 01 Active Firmware Version 0 85 Active Firmware Date 2008 09 19 Active Firmware Checksum f65991c0 Browse Install New Firmware Status Idle NetR8 GNSS Reference Receiver User Guide 67 6 Configuring the Receiver Settings 68 NetR8 GNSS Reference Receiver User Guide CHAPTER Default Settings and Application Files In this chapter Default receiver settings Resetting the receiver to factory defaults m Using application files to duplicate receiver settings Most of the receiver settings are stored in a
58. he configuration menus on the left of the browser window and the settings on the right Each configuration menu contains related submenus to configure the receiver and monitor receiver performance A summary of each configuration menu is provided here To display the web interface in another language click the corresponding country flag The web interface is available in the following languages English German French Spanish Dutch Polish Italian Russian Chinese Japanese Norwegian Swedish NetR8 GNSS Reference Receiver User Guide 49 6 Configuring the Receiver Settings Receiver Status menu The Receiver Status menu provides a quick link to review the receivers available options current firmware version IP address temperature runtime satellites tracked current outputs available memory position information and more Receiver Status Google Earth Receiver Status Identity The Receiver Status Identity screen shows a list of unique receiver items including the Ethernet MAC address and the Bluetooth MAC address It also lists variable items including the current Ethernet IP address and the firmware version Receiver Status Identity System Name Trimble Serial Number 4805K07252 Ethernet MAC Address 00 60 35 07 69 6E Ethernet IP 155 63 159 39 DNS Resolved Name NONE Bluetooth MAC Address 00 80 37 2e 91 77 Firmware Version 10 85 Firmware Date
59. he message fields GPROT 35 6 A 4E Table A 14 ROT message fields Field Meaning 0 message ID GPROT 1 Rate of turn degrees minutes indicates bow turns to port 2 A Valid data V Invalid data 3 The checksum data always begins with 96 NetR8 GNSS Reference Receiver User Guide VTG NMEA 0183 Output A Over Ground and Speed Over Ground or Track Made Good and Speed Over Ground An example of the VTG message string is shown below Table A 15 describes the message fields GPVTG T M 0 00 N 0 00 K 4E Table A 15 VTG message fields Field Meaning 0 message ID GPVTG 1 Track made good degrees true 2 T track made good is relative to true north 3 Track made good degrees magnetic 4 M track made good is relative to magnetic north 5 Speed in knots 6 N speed is measured in knots 7 Speed over ground in kilometers hour kph 8 K speed over ground is measured in kph 9 The checksum data always begins with NetR8 GNSS Reference Receiver User Guide 97 A NMEA 0183 Output ZDA UTC Day Month And Year and Local Time Zone Offset An example ofthe ZDA message string is shown below Table A 16 describes the message fields GPZDA 172809 12 07 1996 00 00 45 Table A 16 ZDA message fields Field Meaning message ID GPZDA UTC Day ranging between 01 and 31 Month ranging between 01 and 12 Year Local time zone offset fr
60. he network When a receiver is connected to a network using DHCP an IP address is assigned to the receiver by the network To verify the IP address of the receiver select the up button from the keypad when the Home screen is displayed The Ethernet IP address appears as shown If your network installation requires the receiver to be configured with a static IP address you can configure the Ethernet settings either using the front panel as described in the Chapter 5 Configuring the Receiver Using the Keypad and Display via the web server or the WinFlash utility The web server can be only used when the receiver is connected to a network and has a valid Ethernet configuration 44 NetR8 GNSS Reference Receiver User Guide Configuring the Receiver Settings 6 Use the WinFlash utility to configure the Ethernet settings of a receiver that is to be connected to a network that requires static IP addresses 1 Contact the network administrator for the correct settings for the receiver 2 Use the serial cable provided with the receiver to connect the receiver to a computer running the WinFlash utility 3 Turn on the receiver 4 Onthe computer start the WinFlash utility 5 From the Device Configuration screen a From the Device type list select Trimble NetR8 Receiver b From the PC serial port list select the appropriate PC serial port WinFlash v1 170 Device Configuration The devices which WinFlash can communicate with are Win
61. imum Azimuth of second satellite degrees from True North 000 through 359 Co N B W N O The checksum data always begins with PGPPADV 120 21 76 82 68 51 29 20 66 317 47 28 52 38 276 81 22 42 26 198 96 5D Table A 2 ADV subtype 120 message fields Field Meaning 0 message ID PPGPADV 1 Message sub type 120 2 First SV PRN number 3 Elevation of first satellite in degrees 90 maximum 4 Azimuth of first satellite degrees from True North 000 through 359 5 Second SV PRN number 6 Elevation of second satellite in degrees 90 maximum 7 Azimuth of second satellite degrees from True North 000 through 359 8 The checksum data always begins with 84 NetR8 GNSS Reference Receiver User Guide GGA NMEA 0183 Output A Time Position and Fix Related Data An example of the GGA message string is shown below Table A 3 describes the message fields GPGGA 172814 0 3723 46587704 N 12202 26957864 W 2 6 1 2 18 893 M 25 669 M 2 0 0031 4F Table A 3 GGA message fields Field Meaning 0 message ID GPGGA 1 UTC of position fix 2 Latitude 3 Direction of latitude N North S South 4 Longitude Direction of longitude E East W West 6 GPS Quality indicator 0 Fix not valid 1 GPS fix 2 Differential GPS fix 4 Real Time Kinematic fixed integers 5 Real Time Kinematic float integers 7 Number of SVs in use range
62. ion fixes over longer distances and under more adverse conditions because it compensates for ionospheric delays European Geostationary Navigation Overlay Service A satellite based augmentation system SBAS that provides a free to air differential correction service for GPS EGNOS is the European equivalent of WAAS which is available in the United States The angle below which the receiver will not track satellites Normally set to 10 degrees to avoid interference problems caused by buildings and trees and multipath errors An ellipsoid is the three dimensional shape that is used as the basis for mathematically modeling the earth s surface The ellipsoid is defined by the lengths of the minor and major axes The earth s minor axis is the polar axis and the major axis is the equatorial axis A list of predicted accurate positions or locations of satellites as a function of time A set of numerical parameters that can be used to determine a satellites position Available as broadcast ephemeris or as postprocessed precise ephemeris NetR8 GNSS Reference Receiver User Guide epoch feature firmware GLONASS GNSS GSOF HDOP L1 L2 L5 MSAS multi frequency GPS multipath NMEA OmniSTAR Glossary The measurement interval of a GPS receiver The epoch varies according to the measurement type for real time measurement it is set at one second for postprocessed measurement it can be set to a rate of between one second and
63. ist Application Files Executing App File Name CURRENT Operation Start Now v Filename CURRENT v Start Now Enable Timer Disable Timer Delete File Download File Upload File Store Current File Start Default Now Generate Clone File Install Clone File Upload Clone File Download Clone File Delete Clone File Current Ti Cancg The avaiilable operations are Operation Description Start Now Enable Timer Disable Timer Delete File Applies the selected application file Determines at what time and date the receiver will automatically power up wake up and at what interval it will automatically power up thereafter Application Files Executing App File Name CURRENT Operation Enable Timer Filename BUEN Current Timer Setting Disabled UTC Timer Year 2008 Month Day 1 Hourio Min l0 Repeat 0 vHour D Min Overrides all previously configured power up timer settings Deletes the currently selected application file NetR8 GNSS Reference Receiver User Guide 71 7 Default Settings and Application Files Operation Description Download File Upload File Store Current File Start Default Now Generate Clone File Install Clone File Upload Clone Fine Download Clone File Delete Clone File Allows you to download the currently selected application file to your browsing computer Allow
64. ithin Australia and New Zealand Taiwan Battery Recycling Requirements The product contains a removable Lithium ion battery Taiwanese regulations require that waste batteries are recycled Fg rerit LC Directive 1999 5 EC Hereby Trimble Navigation declares that the NetR8 GNSS Reference receiver is in compliance with the essential requirements and other relevant provisions of Directive 1999 5 EC 53 Notice to Our European Union Customers For product recycling instructions and more information please go to www trimble com ev shtml Recycling in Europe To recycle Trimble WEEE Waste Electrical and Electronic Equipment products that run on electrical power Call 31 497 53 24 30 and ask for the X WEEE Associate Or mail a request for recyclin instructions to 1 diis Trimble Europe BV c o Menlo Worldwide Logistics Meerheide 45 5521 DZ Eersel NL Declaration of Conformity We Trimble Navigation Limited 935 Stewart Drive PO Box 3642 Sunnyvale CA 94088 3642 United States 1 408 481 8000 declare under sole responsibility that the product NetR8 complies with Part 15 of FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation NetR8 GNSS Reference Receiver User Guide 3 4 NetR8 GNSS Reference Receiver User Guide
65. ition Use the Receiver Configuration Position screen to configure settings relating to using the receiver as a Rover Integrity Monitor Receiver Configuration General General Event 1 On Off Disable v External Frequency Disable No Source Detected w v Internal Battery UPS Enable v v v Event 1 Slope Positive 1PPS On Off Disable v Power Over Ethernet Disable v Ethernet Battery Charging Power On Voltage 15 0 Volts Range 10 8V 15 0V Default 15 0V Shutdown Voltage Enable v 10 500 Volts Range 9 5V 15 0V Default 10 5V VFD Configuration Enable M VFD Power Saver Enable v 62 NetR8 GNSS Reference Receiver User Guide Configuring the Receiver Settings 6 Use the Receiver Configuration General screen to determine e Whether event signals and an external frequency source will be used e Choose to output a one pulse per second signal 1 PPS e Disable the use of the internal battery as an uninterruptable power supply e Enable Power over Ethernet Note The VFD Configuration item determines whether users can operate the receiver using its front panel display and keypad If you disable this feature and Ethernet communications are lost the only way to regain control of the receiver will be to perform a hard reset of the receiver using the Power button Receiver Configuration Application Files Use the Receiver Con
66. iver makes it easy to set up a powerful and reliable Continuously Operating Reference Station CORS or to collect data from temporary field locations The NetR8 receiver is ideal for the following infrastructure applications Use as part of a GNSS Infrastructure network in conjunction with Trimble GNSS Infrastructure software Use as part of a permanent reference station with or without supporting software Use a temporary field base station to broadcast RTK corrections and collect observations for postprocessing Use as a scientific reference station collecting data for atmospheric or seismological studies NetR8 GNSS Reference Receiver User Guide 15 2 Receiver Overview Receiver framework The NetR8 receiver integrates the latest multi frequency GNSS technology into a specialized processing and communications framework The receiver can operate as a standalone reference station or it can be integrated into a scalable network With Internet Protocol IP as the primary communications method you can use public domain tools such as a web browser and FTP client to configure the receiver and access logged data files Note All references to the Internet are intended to mean either a Wide Area Network WAN or a Local Area Network LAN connection You can enforce multiple levels of security from a completely open system that allows anonymous access to all features to a secured system that requires a password protecte
67. k the fuse Check the charge on the internal battery Check that the Lemo connector is seated correctly and that the cable is secured to the receiver Check for broken or bent pins in the connector Check that you are using the correct cable for the port battery Check that the correct battery is connected to a particular port Check pinouts with a multimeter to ensure internal wiring is intact Delete old files Do one of the following e Press for 35 seconds Use the delete and purge functions in the Data Logging menu of the web interface Wait until the receiver display shows that more than four satellites are being tracked Press for 35 seconds Turn off the receiver and then turn it back on again Press for 35 seconds Check the port settings for the receiver by using the front panel or the Web interface Check that the radio ports are correctly set up Try a different cable Examine the ports for missing pins Use a multimeter to check pinouts If the radio has its own power supply check the charge and connections See the issue The base station receiver is not broadcasting above Connect to the rover receiver radio and make sure that it has the same setting as the reference receiver If the radio is receiving data and the receiver is not getting radio communications use the SCS900 software to check that the port settings are correct Make sure that the external radio antenna cable is connected
68. l Y Flat M SITEJJJh Delete When Full 500 MB m Use the Data Logging Configuration screen to set all logging parameters and to determine whether the session files will be affected by the FTP Push function 56 NetR8 GNSS Reference Receiver User Guide Configuring the Receiver Settings 6 Data Logging Data Files Use the Data Logging Data Files screen to view and or download the files currently stored on the receiver Data Files fal Top Level Directory Parent Directory 15Sec1HR 1Sec24HR 1hz 1HR 2008 50Hz 1HR lost found Ex K X Ex K K Select All Delete Selected Files 168266a TO1 2008 09 22T16 20 21 GPS 3 664 MB 7252257L T01 2008 09 13T21 00 00 GPS 10 78 MB 7252257K T01 2008 09 13T20 00 00 GPS 9 958 MB IX x 3 3 8 7252257J T01 2008 09 13T19 00 00 GPS 10 98 MB 72522571 T01 2008 09 13T18 00 00 GPS 12 95 MB 3 3 3 3 8 7252257H T01 2008 09 13T17 00 00 GPS 12 60 MB L 0 0 0 0 0 0 E 72522576 T01 2008 09 13T16 00 00 GPS 12 48 MB 7252257F T01 2008 09 13T15 00 00 GPS 7252257E T01 2008 09 13T14 00 00 GPS 7252257D TO01 2008 09 13T13 00 00 GPS To download a file double click the file name or its icon and then follow the standard procedures to complete the download To select a group of files for download select the checkbox to the right ofthe
69. lay and explains when and using a web browser why each method is used m Configuring Ethernet settings The WinFlash utility described in this chapter is used primarily to update the receiver firmware and configure the Ethernet settings in the NetR8 receiver NetR8 GNSS Reference Receiver User Guide 43 6 Configuring the Receiver Settings Configuring Ethernet settings The receiver has an Ethernet port in order to connect to an Ethernet network You can use the Ethernet network to access configure and monitor the receiver No serial cable connection to the receiver is necessary The receiver has the following Ethernet settings e IP setup Static or DHCP e P address Netmask e Broadcast e Gateway DNS address e HTTP port The default setting for the HTTP port is 80 The HTTP port is not assigned by the network HTTP port 80 is the standard port for web servers This allows you to connect to the receiver by entering only the IP address of the receiver in a web browser If the receiver is set up to use a port other than 80 you will need to enter the IP address followed by the port number in a web browser Example of connecting to the receiver using port 80 http 169 254 1 0 Example of connecting to the receiver using port 4000 http 169 254 1 0 4000 The default setting of the receiver is to use DHCP Using DHCP enables the receiver to automatically obtain an IP address Netmask Broadcast Gateway and DNS address from t
70. lect 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 6 NetR8 GNSS Reference Receiver User Guide Safety Information Battery safety A WARNING Do not damage the rechargeable Lithium ion battery A damaged battery can cause an explosion or fire and can result in personal injury and or property damage To prevent injury or damage Do not use or charge the battery if it appears to be damaged Signs of damage include but are not limited to discoloration warping and leaking battery fluid Do not expose the battery to fire high temperature or direct sunlight Do not immerse the battery in water Do not use or store the battery inside a vehicle during hot weather Do not drop or puncture the battery Do not open the battery or short circuit its contacts WARNING Avoid contact with the rechargeable Lithium ion battery if it appears to be leaking Battery fluid is corrosive and contact with it can result in personal injury and or property damage To prevent injury or damage If the batter
71. lert FTP NTP Server Configuration Clone Data Logger Configuration Clone Ephemeris and Almanac Data Clones all Email Alert controls all FTP FTP Push controls and NTPServer settings Email alerts Enable switch e Authorization Required switch e SMTP Server e SMTP Port From Email Address e Any Alert switches The user must enter the email address to which the email is to be sent login and the email password FTP e FTP Server Enable switch e FTP Server Port e FTP Push Controls FTP Server Address Remote Directory at server Path Style Rename setting The user must enter the username and password NTP server e External Time Servers e NTP Port e Enable switch Clones all configured Data Logging Sessions from the source receiver e Session Name Enable switch Schedule setting e Duration e Measurement Interval e Smoothing settings Position Interval File System setting e Path and Name Style Pool setting e FTP Push switch Clones all Ephemeris and Almanac data from the source receiver for expediting SV tracking of recipient receiver e GPS Satellites SV1 SV32 e SBAS Satellites SV120 SV138 e GLONASS SV1 SV24 e NAV Chan 0 11 e SBAS for correction e WAAS Ephemeris e WAAS lono Bands e Position e UTC e Almanac Health 74 NetR8 GNSS Reference Receiver User Guide Default Settings and Application Files 7 Generate Clone File selection Affected items C
72. lifier 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 50 225 m 740 ft 32 NetR8 GNSS Reference Receiver User Guide Setting up the Receiver 4 Dial up modems The receiver can make automated dial out connections to an Internet service provider To set up the receiver to do this in the Web interface select Network Configuration PPP You can set up a streaming service such as RT17 RT27 raw GNSS data CMR or RTCM corrections over a serial port When using a modem on the serial port the modem itself must perform the auto answer function Radio modems You can connect the receiver to an external radio through the Lemo ports or the 9 pin serial port whether or not the Ethernet port is in use Trimble radios are supplied with the required cables to connect to the Lemo ports The NetR8 receiver supports the following Trimble base radios TRIMMARK 3 firmware 1 26 or later e Trimble HPB450 e Trimble PDL450 To use an external radio with the receiver you need an external power source for the radio Configure the external radio separately using the configuration program for the external radio To configure the NetR8 receiver for RTK operation you must do all of the following e Enable the RTCM or CMR RTK corrector stream on the selected serial port e Set the reference station coordinates and broadcast ID using the front panel of the receiver or the W
73. lites e Download the latest broadcast ephemeris Satellites General The Satellites General screen provides an overview of satellite tracking status Satellites General Information Satellites Tracked 16 GPS 11 3 6478 10131619723 25 27 GLONASS 5 7 9 10 19 20 Total Satellites in GPS Constellation 31 GPS Healthy Satellites 30 235 46 7 98s 9 0511512513514 5159169 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 GPS Unhealthy Satellites 1 5 Total Satellites in GLONASS Constellation 16 GLONASS Healthy Satellites 14 4 6 7 9 10 11 13 14 15 17 19 20 23 24 GLONASS Unhealthy Satellites 2 18 2008 09 22T16 45 11Z UTC NetR8 GNSS Reference Receiver User Guide 53 6 Configuring the Receiver Settings Satellites Tracking Skyplot This figure shows shows the Tracking Skyplot display as an example of the graphical views available in this menu Satellites Skyplot 2008 09 22T17 13 52Z UTC Data Logging menu Use the Data Logging menu to set up the receiver to log static GNSS data and to view the logging settings You can configure settings such as observable rate position rate continuous logging continuous logging rate and whether to auto delete old files if memory islow This menu also provides the controls for the FTP push feature Data Logging 54 NetR8 GNSS Reference Receiver User Guide Data Logging Summary Configuring the Receiver Settings
74. lone Miscellaneous Everything Else Clone Miscellaneous Everything Else continued Position Controls Elevation Mask PDOP Mask RTK Mode Motion Precisions General Controls Event On Off and Slope External Frequency Internal Battery UPS setting 1PPS On Off Power Over Ethernet Enabled Disabled Ethernet Battery Charging setting Shutdown Voltage settings VFD Configuration VFD Power Saver setting Tracking Controls Everest setting Clock Steering setting Signal Enable switches and Options Antenna Settings Antenna Type Measurement Method Antenna Height Reference Station settings Latitude Longitude Height CMRID RTCM 2 x 3 x ID Station Name Station Code Bluetooth Controls OmniSTAR Configuration External OmniSTAR Data Internal OmniSTAR Demodulator SV Name Seed with RTK setting NAD83 gt ITRF Transformation switch NetR8 GNSS Reference Receiver User Guide 75 7 Default Settings and Application Files 76 NetR8 GNSS Reference Receiver User Guide Specifications In this chapter General specifications Physical specifications Electrical specifications Communication specifications CHAPTER This chapter details the specifications for the NetR8 GNSS Reference receiver Specifications are subject to change without notice NetR8 GNSS Reference Receiver User Guide 77 8 Specifications Ge
75. lso initiates edit mode for the current field Power button operations Press the power button to turn the receiver on and off In addition you can tap the power button to return to the Home screen or hold down the Power button to perform the following operations To Hold the G button Notes turn off the receiver clear the almanac ephemeris and SV information reset the receiver to its factory defaults and the default application file force the receiver to power down two seconds 15 seconds 35 seconds at least 60 seconds The display shows a countdown timer When the display goes blank release the power button The display show a countdown timer When the display goes blank continue to hold the power button The display shows a countdown time to clear the almanac and ephemeris When the counter reaches 0 release the power button The display show a countdown timer When the display goes blank continue to hold the power button The display show a countdown to clear the almanac and ephemeris When the counter reaches 0 continue to hold the power button The display indicates a countdown to resetting the receiver When the counter reaches 0 release the power button If the method above does not work use this method to force the receiver to turn off When the Power LED goes off release the power button Note All data stored in the receiver is lost when the receiver is forced
76. n is a receiver placed at a known point on a jobsite that tracks the same satellites as an RTK rover and provides a real time differential correction message stream through radio to the rover to obtain centimeter level positions on a continuous real time basis A base station can also be a part of a virtual reference station network or a location at which GPS observations are collected over a period of time for subsequent postprocessing to obtain the most accurate position for the location Binary EXchange format BINEX is an operational binary format standard for GPS GLONASS SBAS research purposes It has been designed to grow and allow encapsulation of all or most of the information currently allowed for in a range of other formats An Internet server that manages authentication and password control for a network of VRS servers and relays VRS corrections from the VRS server that you select A radio wave having at least one characteristic such as frequency amplitude or phase that can be varied from a known reference value by modulation The frequency ofthe unmodulated fundamental output of a radio transmitter The GPS L1 carrier frequency is 1575 42 MHz The time taken for the L1 or L2 carrier signal generated by the satellite to reach the GPS receiver Measuring the number of carrier waves between the satellite and receiver is a very accurate method of calculating the distance between them A wireless adaptor that connects a lapto
77. neral specifications Feature Specification Keyboard and display Receiver type Antenna type Vacuum Fluorescent Display VFD 16 characters by 2 rows Escape and Enter key for menu navigation 4 arrow keys up down left right for option scrolls and data entry GNSS Reference receiver Zephyr Geodetic Model 2 or Trimble GNSS Choke Ring antenna preferred Other models supported Physical specifications Feature Specification Dimensions LxWxH 26 5 cm 10 43 in x 19 cm 7 48 in x 6 75 cm 2 64 in including connectors Weight 2 08 kg 4 59 lbs receiver with internal battery and no radio Temperature Operating 40 C to 65 C 40 F to 149 F Storage 40 C to 80 C 40 F to 176 F Humidity 100 condensing Waterproof IP67 for submersion to depth of 1 m 3 28 ft Shock and vibration Shock non operating Shock operating Vibration Measurements Code differential GPS positioning Horizontal accuracy Vertical accuracy WAAS EGNOS and MSAS Horizontal accuracy Vertical accuracy Real Time Kinematic RTK positioning Horizontal Vertical Initialization reliability Designed to survive a 1 m 3 28 ft drop onto a hard surface Survival to 75 g 6 mS To 25 g 10 msec saw tooth 10 Hz to 300 Hz 0 04 g Hz 300 Hz to 1000 Hz 6 dB Octave e Advanced Trimble Maxwell Custom GNSS chip e L2C Civil signal and L5 signal for GPS modernization e Very low noise L1 L2 and L5 carrier
78. nformation about second SV same format as fields 4 through 7 12 15 Information about third SV same format as fields 4 through 7 16 19 Information about fourth SV same format as fields 4 through 7 20 The checksum data always begins with 88 NetR8 GNSS Reference Receiver User Guide NMEA 0183 Output A HDT Heading from True North The HDT string is shown below and Table A 7 describes the message fields GPHDT 123 456 T 00 Table A 7 Heading from true north fields Field Meaning 0 message ID GPHDT 1 Heading in degrees 2 T Indicates heading relative to True North 3 The checksum data always begins with NetR8 GNSS Reference Receiver User Guide 89 A NMEA 0183 Output PTNL AVR Time Yaw Tilt Range for Moving Baseline RTK The PTNL AVR message string is shown below and Table A 8 describes the message fields PTNLAVR 181059 6 149 4688 Yaw 0 0134 Tilt 60 191 3 2 5 6 00 Table A 8 AVR message fields Field Meaning message ID PTNL AVR UTC of vector fix Yaw angle in degrees Yaw Tilt angle in degrees Tilt Reserved Reserved Range in meters WO CO NI wD WH BB Ww N o GPS quality indicator Fix not available or invalid Autonomous GPS fix Differential carrier phase solution RTK Fix 0 1 2 Differential carrier phase solution RTK Float 3 4 Differential code based solution DGPS 10 PDOP 11 Number
79. ng parts of Canada and Mexico The WAAS system provides correction data for visible satellites Corrections are computed from ground station observations and then uploaded to two geostationary satellites This data is then broadcast on the L1 frequency and is tracked using a channel on the GPS receiver exactly like a GPS satellite Use WAAS when other correction sources are unavailable to obtain greater accuracy than autonomous positions For more information on WAAS refer to the FAA website at http gps faa gov The EGNOS service is the European equivalent and MSAS is the Japanese equivalent of WAAS World Geodetic System 1984 Since January 1987 WGS 84 has superseded WGS 72 as the datum used by GPS The WGS 84 datum is based on the ellipsoid ofthe same name NetR8 GNSS Reference Receiver User Guide 111 Glossary 112 NetR8 GNSS Reference Receiver User Guide NORTH AMERICA Trimble Engineering amp Construction Group 5475 Kellenburger Road Dayton Ohio 45424 1099 e USA 800 538 7800 Toll Free 1 937 245 5154 Phone 1 937 233 9441 Fax EUROPE Trimble GmbH Am Prime Parc 11 65479 Raunheim e GERMANY 49 6142 2100 0 Phone 49 6142 2100 550 Fax ASIA PACIFIC Trimble Navigation Singapore Pty Limited 80 Marine Parade Road 322 06 Parkway Parade Singapore 449269 e SINGAPORE 65 6348 2212 Phone 65 6348 2232 Fax Trimble www trimble com
80. nits voids the Type approval the warranty and the operational license of the equipment NetR8 GNSS Reference Receiver User Guide 5 Safety Information Exposure to radio frequency radiation Safety Exposure to RF energy is an important safety consideration The FCC has adopted a safety standard for human exposure to radio frequency electromagnetic energy emitted by FCC regulated equipment as a result of its actions in General Docket 79 144 on March 13 1986 Proper use of this radio modem results in exposure below government limits The following precautions are recommended e DO NOT operate the transmitter when someone is 20 cm 7 8 inches of the antenna e DO NOT operate the transmitter unless all RF connectors are secure and any open connectors are properly terminated e DO NOT operate the equipment near electrical blasting caps or in an explosive atmosphere e Allequipment must be properly grounded according to Trimble installation instructions for safe operation e All equipment should be serviced only by a qualified technician For Bluetooth radio The radiated output power of the internal Bluetooth wireless radio is far below the FCC radio frequency exposure limits Nevertheless the wireless radio shall be used in such a manner that the Trimble receiver is 20 cm or further from the human body The internal wireless radio operates within guidelines found in radio frequency safety standards and recommendations which ref
81. om GMT ranging from 00 through x13 hours Local time zone offset from GMT ranging from 00 through 59 minutes NII my B WI N O The checksum data always begins with Fields 5 and 6 together yield the total offset For example if field 5 is 5 and field 6 is 15 local time is 5 hours and 15 minutes earlier than GMT 98 NetR8 GNSS Reference Receiver User Guide APPENDIX Upgrading the Receiver Firmware In this appendix m The WinFlash utility m Upgrading the receiver firmware m Forcing the receiver into Monitor mode The receiver is supplied with the latest version of the receiver firmware already installed If a later version of the firmware becomes available use the WinFlash utility to upgrade the firmware on your receiver Firmware updates are available to download from the Trimble website Go to www trimble com Support and select the link to the receiver that you need updates for and then click Downloads Running the WinFlash installer installs the appropriate files to your hard drive You can also upgrade the NetR8 receiver through the web interface The firmware file required to upgrade the receiver through the Web interface is located in C Program FilesVTrimbleWWinFlash Firmware The file type required is the format wm vxxx img where xxx represents the version of firmware NetR8 GNSS Reference Receiver User Guide 99 Upgrading the Receiver Firmware The WinFlash utility The WinFlash utili
82. on 1 TNC SN Connect to the GNNS antenna 2 BNC 10 MHz external frequency input 3 DI Full 9 wire RS 232 serial port 4 Vent plu A External venting plug for pressure equalization aa LIN VENT TO NOT REMOVE TEE E a 5 Lemo 7 pin 3 wire RS 232 serial communications using a 7 pin 0 shell O shell Port 2 Lemo cable P N 59044 Event input and 1 pps output using a 36451 02 cable Power from a Trimble AC DC power supply P N 62546 in combination with P N 59044 6 Lemo 7 pin 5 wire RS 232 serial communications using a 7 pin O shell O shell Port 3 Lemo cable P N59044 Power from a Trimble AC DC power supply P N 62546 in combination with P N 59044 7 RJ45 jack w 310 100 Base T Ethernet communications Figure 2 2 Rear view of the NetR8 receiver NetR8 GNSS Reference Receiver User Guide 21 2 Receiver Overview 22 NetR8 GNSS Reference Receiver User Guide CHAPTER Batteries and Power In this chapter External power Battery safety Battery performance Charging the Lithium ion battery Storing the Lithium ion battery Removing the rechargeable Lithium ion battery The NetR8 GNSS receiver uses an internal rechargeable Lithium ion battery which can be replaced only at an Authorized Trimble Service Center The receiver can also be powered by an external power source that is connected to either of the Lemo ports The operational time provided by the internal battery depends on the type of measurement and operating
83. ot limited to discoloration warping and leaking battery fluid Do not expose the battery to fire high temperature or direct sunlight Do not immerse the battery in water Do not use or store the battery inside a vehicle during hot weather Do not drop or puncture the battery Do not open the battery or short circuit its contacts WARNING Avoid contact with the rechargeable Lithium ion battery if it appears to be leaking Battery fluid is corrosive and contact with it can result in personal injury and or property damage To prevent injury or damage If the battery leaks avoid contact with the battery fluid If battery fluid gets into your eyes immediately rinse your eyes with clean water and seek medical attention Do not rub your eyes If battery fluid gets onto your skin or clothing immediately use clean water to wash off the battery fluid Battery performance To optimize battery performance and extend battery life e Fully charge all new batteries before use e 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 e Donotallow a battery that is in storage to discharge to below 5 V NetR8 GNSS Reference Receiver User Guide 25 3 Batteries and Power Charging the Lithium ion battery The rechargea
84. p computer to a cellular phone system for data transfer Cellular modems which contain their own antennas plug into a PC Card slot or into the USB port of the computer and are available for a variety of wireless data services such as GPRS Compact Measurement Record A real time message format developed by Trimble for broadcasting corrections to other Trimble receivers CMR is a more efficient alternative to RTCM The mean value NetR8 GNSS Reference Receiver User Guide 107 Glossary datum deep discharge DGPS differential correction differential GPS DOP dual frequency GPS EGNOS elevation mask ellipsoid emphemeris ephemerides 108 Also called geodetic datum mathematical model designed to best fit the geoid defined by the relationship between an ellipsoid and a point on the topographic surface established as the origin of the datum World geodetic datums are typically defined by the size and shape of an ellipsoid and the relationship between the center of the ellipsoid and the center of the earth Because the earth is not a perfect ellipsoid any single datum will provide a better model in some locations than in others Therefore various datums have been established to suit particular regions For example maps in Europe are often based on the European datum of 1950 ED 50 Maps in the United States are often based on the North American datum of 1927 NAD 27 or 1983 NAD 83 All GPS coordinates
85. phase measurements with 1 mm precision in a 1 Hz bandwidth Proven Trimble low elevation tracking technology e 76 Channels L1 C A Code L2C L5C L1 L2 L5 Full Cycle Carrier GLONASS L1 L2 e WAAS EGNOS and MSAS 0 25 m 1 ppm RMS 0 50 m 1 ppm RMS Typically 1 m 3 28 ft Typically 5 m 16 40 ft 10 mm 1 ppm RMS 0 38 in 1 ppm RMS 20 mm 1 ppm RMS 0 78 in 1 ppm RMS Typically 299 996 Receiver will operate normally to 40 C 78 NetR8 GNSS Reference Receiver User Guide Specifications 8 2 Accuracy and reliability may be subject to anomalies such as multipath obstructions satellite geometry and atmospheric conditions Always follow recommended practices 3 Depends on WAAS EGNOS and MSAS system performance 4 Only for use with Trimble GNSS Infrastructure software in conjunction with rover integrity module 5 May be affected by atmospheric conditions signal multipath and satellite geometry Initialization reliability is continuously monitored to ensure highest quality Electrical specifications Feature Specification Power Internal Integrated internal battery 7 4 V 7800 mA hr Lithium ion Internal battery canoperate as a UPS in the event of external power source outage Internal battery will charge from external power source when input voltage is gt 15 V or via Power over Ethernet supply External Power input on Lemo 7P0S has a user defined cut off threshold of 9 5 V or Po
86. pplication files The default application file Default cfg is stored permanently in the receiver and contains the factory default settings for the NetR8 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 The NetR8 receiver extends the use of application files to allow simplified receiver setting duplication in multiple receivers This is sometimes referred to as receiver cloning and is very useful when preparing a large group of receivers for a field data collection campaign NetR8 GNSS Reference Receiver User Guide 69 7 Default Settings and Application Files Default receiver settings These settings are defined in the default application file Function Factory default SV Enable All SVs enabled General Controls Elevation mask 10 PDOP mask 7 RTK positioning mode Low Latency Motion Static Lemo Ports Baud rate 38 400 Format 8 None 1 Flow control None D9 Port Baud rate 38 400 Format 8 None 1 Flow control None Input Setup Station Any NMEA ASCII all supported messages All ports Off Streamed output All types Off Offset 00 RT17 RT27 Binary All ports Off Reference position Latitude 0 Longitude 0 Altitude 0 00 m HAE Height above ellipsoid Antenna Type Zephyr Geodetic Model 2 Height true vertical Measurement method 0 00 m
87. r voltage protection and configurable power up and power down settings Power over Ethernet PoE support Tracking and storage rates of up to 50 Hz Five independent data logging sessions with configurable memory pooling FTP push to allow uploading of logged data files to remote FTP sites Email client to alert system users of any issues with the system Ethernet and reference station configuration via the front panel Multiple languages available through the Web interface and receiver front panel Ntrip Networked Transport of RTCM via Internet Protocol client server support to securely transfer data to and from an NtripCaster 18 NetR8 GNSS Reference Receiver User Guide Receiver Overview 2 Use and care This product is designed to withstand the rough treatment and tough environment that typically occurs in CORS installation However the receiver is a high precision electronic instrument and should be treated with reasonable care A CAUTION Operating or storing the receiver outside the specified temperature range can damage it For more information see Chapter 8 Specifications Electronic interference High power signals from a nearby radio or radar transmitter can overwhelm the receiver circuits This does not harm the instrument but it can prevent the receiver electronics from functioning correctly Avoid locating the receiver or antenna within 400 meters of powerful radar television or other transmitters or GNSS antennas
88. r which it does not charge separately subject to the procedures for delivery to purchasers of Trimble products generally If you have purchased the Product from an authorized Trimble distributor rather than from Trimble directly Trimble may at its option forward the software Fix Update or Minor Update to the Trimble distributor for final distribution to you Major Upgrades new products or substantially new software releases as identified by Trimble are expressly excluded from this update process and limited warranty Receipt of software updates shall not serve to extend the limited warranty period 2 NetR8 GNSS Reference Receiver User Guide For purposes ofthis warranty the following definitions shall apply 1 Fix Update means an error correction or other update created to fix a previous software version that does not substantially conform to its published specifications 2 Minor Update occurs when enhancements are made to current features in a software program and 3 Major Upgrade occurs when significant new features are added to software or when a new product containing new features replaces the further development of a current product line Trimble reserves the right to determine in its sole discretion what constitutes a significant new feature and Major Upgrade Warranty Remedies Ifthe Trimble Product fails during the warranty period for reasons covered by this Limited Warranty and you notify Trimble of such failure
89. ration dialog appears 46 NetR8 GNSS Reference Receiver User Guide Configuring the Receiver Settings 6 8 Enterthe network settings in the Ethernet Configuration dialog Click OK Ethernet Configuration r Ethernet settings IP Sstup Static IP address IP Adcress Netmask Broadcast Gateway DNS Address HTTP settings Server Pott 80 Cancel The Broadcast setting is the IP address that is used to broadcast to all devices on the subnet This is usually the highest address usually 255 in the subnet Configuring the NetR8 receiver using a web browser The receiver can be configured using the keypad and display or a web browser This section describes how to set up the receiver using a web browser Supported browsers e Mozilla Firefox version 3 0 e Microsoft Internet Explorer version 7 0 for Windows operating systems Note Version 8 0 may have problems if the Use Standards Mode option is used in that browser software NetR8 GNSS Reference Receiver User Guide 47 6 Configuring the Receiver Settings To connect to the receiver using a web browser 1 Enter the IP address ofthe receiver into the address bar of the web browser as shown Trimble Mozilla Firefa File Edit Yew Go Bookmarks Tools Help 9 5o 008 2 If security is enabled on the receiver by default it is disabled the web browser prompts you to enter a username and password Prompt
90. ring and changing the antenna height The Antenna Type screen appears L 2 3 Press to select the type of antenna used with the receiver Press Dor to select an antenna type When finished press Press to move to the next screen The Measured To screen appears Press to select how the antenna height is measured Press Dor to select a measurement method When finished press O Press to move to the next screen The Antenna Height screen appears Press XZ to edit the antenna height Press or to select the character to edit and then press Dor to change it When finished press E Press to move to the next screen NetR8 GNSS Reference Receiver User Guide 39 5 Configuring the Receiver Using the Keypad and Display Outputting corrections The Output screen appears 1 2 3 4 5 Press XZ to edit the name of the port which will be used to output corrections Press Dor to select the port 1 2 or 3 When finished press O Press to select the Format field and then press Oto edit this field Press until the required format choice is flashing Press to move to the next screen Data logging The Logging screen appears L When you have configured the outputting corrections press to set up internal logging on the receiver Press Dor to select the logging rate Press amp to accept Press W to select Files Press to edit and press or to select the appropriate length of time to log data for Wh
91. rmation include the following e 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 GNSS Reference Receivers CD as well as on the Trimble website e Trimble training courses Consider a training course to help you use your GNSS system to its fullest potential For more information go to the Trimble website at www trimble com training html Technical support If you have a problem and cannot find the information you need in the product documentation contact your local Infrastructure dealer Alternatively go to the Support area of the Trimble website www trimble com support shtml and then select the product you need information on Product updates documentation and any support issues are available for download If you need to contact Trimble technical support complete the online inquiry form at www trimble com support form asp Your comments Your feedback about the supporting documentation helps us to improve it with each revision Email your comments to ReaderFeedback trimble com 14 NetR8 GNSS Reference Receiver User Guide Receiver Overview In this chapter Receiver framework NetR8 receiver features Use and care Electronic interference COCOM limits Keypad and display Rear connectors CHAPTER This chapter introduces the Trimble NetR8 GNSS Reference receiver This rece
92. ry screen provides an overview of the status of many ofthe important configuration items Receiver Configuration Elevation Mask 0 PDOP Mask f Horizontal Precision 0 30 m Vertical Precision 0 30 m Clock Steering Enabled Everest MMultipath Mitigation Enabled Antenna ID 27 Antenna Type Choke Ring Antenna Height 0 000 m 1PPS On Off Disabled Event 1 On Off Disabled Event 1 Slope Positive External Frequency Available Undetected RTK Mode Low Latency Motion Static CMR InputFilter Disabled Reference Latitude 39 53 52 88392 N Reference Longitude 105 6 45 40964 Reference Height 1669 804 m RTCM 2 x ID 168 RTCM 3 x ID 168 CMR ID 9 Station Name STATION 168 Ethernet IP 155 63 159 39 System Name Trimble DNS Resolved Name NONE Serial Number 4805K07252 Firmware Version 0 85 Firmware Date 2008 09 19 60 NetR8 GNSS Reference Receiver User Guide Configuring the Receiver Settings 6 Receiver Configuration Antenna Use the Receiver Configuration Antenna screen to configure all of the items relating to the GNSS antenna You must enter the correct values for all antenna related fields as the choices you make will significantly affect the accuracy for logged data and broadcast RTK correctors Antenna Configuration Antenna Type GNSS Choke y Antenna Serial Number Antenna Measurement Method Bottom of antenna mount v Antenna Height m 0 000
93. s the message fields PTNL VGK 160159 00 010997 0000 161 00009 985 0000 002 3 07 1 4 M 0B Table A 11 PTNL VGK message fields Field Meaning message ID PTNL VGK UTC of vector in hhmmss ss format Date in mmddyy format East component of vector in meters North component of vector in meters Up component of vector in meters HD uy A WI N O GPS Quality indicator 0 Fix not available or invalid 1 Autonomous GPS fix 2 Differential floating carrier phase integer based solution RTK float 3 Differential fixed carrier phase integer based solution RTK fixed 4 Differential code phase only solution DGPS Also OmniSTAR XP HP converging SBAS solution WAAS EGNOS RTK Float 3D in a VRS Network Also OmniSTAR XP HP converged RTK Fixed 3D in a VRS Network RTK Float 2D in a VRS Network Onley un Number of satellites if fix solution DOP of fix M Vector components are in meters The checksum data always begins with NetR8 GNSS Reference Receiver User Guide 93 A NMEA 0183 Output PTNL VHD Heading Information An example ofthe PTNL VHD message string is shown below Table A 12 describes the message fields PTNL VHD 030556 00 093098 187 718 22 138 76 929 5 015 0 033 0 006 3 07 2 4 M 22 Table A 12 PTNL VHD message fields Field Meaning message ID PTNL VHD UTC of position in hhmmss ss format Date in mmddyy format
94. s you to send a file from your browsing computer to the target NetR8 receiver Allows you to store an application file including all current custom settings under a new name Returns the receiver to factory default settings Allows you to create a named xml file including the receiver configuration items of your choice Application Files Executing App File Name CURRENT Operation Generate Clone File Filename NetR8 02 Clone Security Configuration Also fills user names and encrypted passwords in other records Clone IP Port and I O Streams Configuration O Clone Ethernet Boot Configuration O Clone HTTP Configuration L Clone Email Alert FTP NTP Server Configuration L Clone Data Logger Configuration Clone Ephemeris and Almanac Data Clone Miscellaneous Everything Else Enable All J Disable All Tells the receiver to accept the clone file settings in a particular file Allows you to move a clone file from your browsing computer to the targer receiver Allows you to move a clone file from the receiver to your browsing computer Allows you to delete a clone file stored on the receiver 72 NetR8 GNSS Reference Receiver User Guide Default Settings and Application Files 7 The following generated Clone file selections are available Generate Clone File selection Affected items Clone Security Configuration Clone IP Port and l O Streams Configuration Clone Eth
95. specified email address This requires the use of an SMTP server To find out how to connect the receiver to the server contact your network administrator NetR8 GNSS Reference Receiver User Guide 65 6 Configuring the Receiver Settings This figure shows an example of the screen that appears when you select Network Configuration Ethernet Ethernet Configuration Stored settings IP Setup Static IP IP Address 55 63 Hess 39 Netmask 255 55 255 240 Broadcast Gateway hss Jea 1s9 a Force DNS Address 1 DNS Address l DNS Domain Hostname Itrim 805K07252 MTU H500 Current settings IP Setup Static IP IP Address 155 63 159 39 Netmask 255 255 255 240 Broadcast 155 63 159 47 Gateway 1551621592 Force DNS Address 0 DNS Address 0 0 0 0 DNS Domain am trimblecorp net Hostname trim4805K07252 MTU 1500 Security menu Use the Security menu to configure the login accounts for all users who will be permitted to configure the receiver using a web browser Each account consists of a username password and permissions Administrators can use this feature to limit access to other users By default security is disabled to make it easier to configure the receiver However Trimble encourages administrators to enable security to avoid unwanted changes If security is enabled with anonymous access it allows users to browse the receiver settin
96. stems are accurate to within a meter or so OmniSTAR with XP is accurate in 3D to better than 30 cm NetR8 GNSS Reference Receiver User Guide 109 Glossary PDOP postprocessing real time differential GPS reference station rover Roving mode RTCM RTK SBAS signal to noise ratio skyplot SNR UTC Position Dilution of Precision PDOP is a DOP value that indicates the accuracy of three dimensional measurements Other DOP values include VDOP vertical DOP and HDOP Horizontal Dilution of Precision Using a maximum PDOP value is ideal for situations where both vertical and horizontal precision are important Postprocessing is the processing of satellite data after it has been collected in order to eliminate error This involves using computer software to compare data from the rover with data collected at the base station Also known as real time differential correction or DGPS Real time differential GPS is the process of correcting GPS data as you collect it Corrections are calculated at a base station and then sent to the receiver through a radio link As the rover receives the position it applies the corrections to give you a very accurate position in the field Most real time differential correction methods apply corrections to code phase positions RTK uses carrier phase measurements While DGPS is a generic term its common interpretation is that it entails the use of single frequency code phase data sent
97. stored the receiver restarts in the same status as it was when power was lost If for some reason you do not want to use the internal battery as an uninterruptable power supply you may disable this feature in the Web user interface See Chapter 5 for details on the configuration setting WARNING The external AC power adapter and its associated power cord and plug are not intended to be installed outdoors nor in a wet location gt WARNING Do not power the receiver through external power when operating in a wet environment or an environment that may become wet The power input connections must be sheltered gt A WARNING When you apply DC voltage to this product through the Lemo connectors connectors 2 or 3 the DC voltage must be limited to 28 V DC 0 under both normal and single fault conditions This product may present an electrical hazard if the recommended input voltage is exceeded 24 NetR8 GNSS Reference Receiver User Guide Batteries and Power 3 Battery safety A The receiver is powered by a rechargable internal Lithium ion battery Charge and use the battery only in strict accordance with the instructions below WARNING Do not damage the rechargeable Lithium ion battery A damaged battery can cause an explosion or fire and can result in personal injury and or property damage To prevent injury or damage Do not use or charge the battery if it appears to be damaged Signs of damage include but are n
98. tR8 GNSS Reference receiver Even if you have used other Global Navigation Satellite Systems GNSS 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 GNSS visit the Trimble website www trimble com for an interactive look at Trimble and GNSS NetR8 GNSS Reference Receiver User Guide 13 1 Introduction About the NetR8 GNSS Reference receiver The NetR8 GNSS Reference receiver is a multiple frequency GNSS receiver It can track all GPS signals L1 L2 L5 as well as GLONASS L1 L2 You can use the front panel of the receiver or an office computer to configure the receiver access files and publish data files to a company intranet or to the Internet The NetR8 receiver makes it easy for you to set up a powerful flexible and reliable reference station for continuous operation The Trimble NetR8 receiver is designed to serve in all common geodetic reference receiver roles It can be the main component in a continuously operating reference station CORS streaming data to Trimble GNSS Infrastructure software It can also work well as a campaign receiver prior to permanent deployment The NetR8 makes an excellent portable RTK base station with its internal battery This receiver also has specialized capabilities that make it an excellent reference receiver for scientific applications Related information Sources of related info
99. to power down 36 NetR8 GNSS Reference Receiver User Guide Configuring the Receiver Using the Keypad and Display 5 Home screen The Home screen is the main screen displayed on the NetR8 receiver The receiver always returns to this screen if displaying any other screen and left idle for 60 seconds The Home screen indicates e the number of satellites being tracked e the internal battery power remaining e the current operation mode e ifthe receiver is logging data the operating mode field will show the word Logging every three seconds is logging is enabled Bluetooth The front panel will go dark after a short period of E ctivity as a power saving feature If the display is not lit and the receiver is on press to reactivate the display If required you can disable this power saving feature in the Web interface Status screens The NetR8 receiver has several status screens on you can review the receiver s current settings To access these screens press or y when the Home screen is displayed The status screens provide the following information e Position solution e CMR and RTCM IDs e Base name and code e Latitude longitude and height e Antenna type e Antenna height and measurement point e Receiver firmware version and date e Receiver serial number e Current IP address e Current subnet mask e Current gateway NetR8 GNSS Reference Receiver User Guide 37 5 Configuring the Receiver Using th
100. to radio frequency radiation 6 For Bluetoothiradi 24 441204 o RERO E uni a a Ru de 6 Battery safety vos oa Savas de deg a Eee qur ya na roche yas 7 Power over Ethernet safety 4 88 7 DC power supply safety 8 Wet location safety s c ss scs cem d a dere DAME at naine ra 8 1 Introd cti n 002 066 RR Rx ETE OR A 13 About the NetR8 GNSS Reference receiver 14 Related information seose ki ees 3 wes bed ae Go ae E xa a a pam ps 14 Technical stipport 2 2434 45 Ma eee A ANR EN RER e t he 14 YOUR COMMENTS kraad vod a e UR gp ala a ee eR bp UR cR Dele Up ed DR A 14 2 Receiver Overview 15 Receiver framework issue sm o eee be koc onu ACE a Ex eb de dodo d 16 The network appliance concept 16 NetRS Services v sordes quede ec exse gue a PUES e at B p y 17 NetR8 receiver features pad va de e pa roce ie pee ee 18 Use and Carew uoi co en Ee gu des cem ole A RE Oen Re Gud op Dele at Ro 19 Electr ni interference s ia dues v a uo usine edP uou a ded T e ga 19 COCOM lits ux tbe ee le RR EG Bee nn eee RR RES 19 Keypad and display 4255s ao eS CEASA o DU REGN pee beh ouate 20 Rear COMMECLOTS ce x oce Hu ui E PUER e Mey ee ew aoe ek ate eth shoes cese e o pee n 21 3 Batteries and Powers 4s ke wax ER veste RR RT
101. ty communicates with Trimble products to perform various functions including e installing software firmware and option upgrades e running diagnostics for example retrieving configuration information e configuring radios For more information online help is also available when using the WinFlash utility Note The WinFlash utility runs on Microsoft Windows XP operating systems Installing the WinFlash utility You can install the WinFlash utility from the Trimble GNSS Reference Receivers CD or from the Trimble website To install the WinFlash utility from the CD 1 Insert the disk into the CD drive on your computer 2 From the main menu select Install individual software packages 3 Select Install WinFlash 4 Followthe on screen instructions The WinFlash utility guides you through the firmware upgrade process as described below For more information refer to the WinFlash Help Upgrading the receiver firmware l Start the WinFlash utility The Device Configuration screen appears 2 Fromthe Device type list select your receiver 3 Fromthe PC serial port field select the serial COM port on the computer that the receiver is connected to and then click Next The Operation Selection screen appears The Operations list shows all of the supported operations for the selected device A description of the selected operation is shown in the Description field 4 Select Load GPS software and then click Next The GPS Soft
102. up guidelines Connecting the receiver to external devices m installing the tripod clip This chapter describes best practices for setting up the equipment and outlines the precautions that you need to take to protect the equipment It also describes how to connect the receiver to external devices The antenna installation guidelines offered here are the minimum standards When installing a geodetic antenna to gather precise observation data always follow recommended CORS installation practices to the greatest extent possible NetR8 GNSS Reference Receiver User Guide 29 Setting up the Receiver Setup guidelines When you set up the receiver follow these guidelines Environmental conditions The receiver has a waterproof housing However you should take reasonable care to keep the unit dry To improve the performance and long term reliability of the receiver avoid exposing the receiver to extreme environmental conditions such as e Water e Heat greater than 65 C 149 F e Cold less than 40 C 40 F e Corrosive fluids and gases Sources of electrical interference Avoid locating the GNSS antenna near the following sources of electrical and magnetic noise e Gasoline engines spark plugs e Televisions and computer monitors e Alternators and generators e Electric motors e Equipment with DC to AC converters e Fluorescent lights e Switching power supplies e Arc welding equipment Uninterruptibl
103. ver Firmware 102 NetR8 GNSS Reference Receiver User Guide APPENDIX Troubleshooting In this appendix Use this appendix to identify and solve common eee problems that may occur with the receiver W Receiver issues Please read this section before you contact Technical Support NetR8 GNSS Reference Receiver User Guide 103 C Troubleshooting Receiver issues This section describes some possible receiver issues possible causes and how to solve them Issue Possible cause Solution The receiver does External power is too not turn on low Internal power is too low External power is not properly connected Faulty power cable Receiver does not Insufficient memory log data The receiver is tracking fewer than four satellites The internal memory needs to be reformatted The receiver is not Receiver needs a soft responding reset Receiver needs a full reset The reference Port settings between station receiver is reference receiver and not broadcasting radio are incorrect Faulty cable between receiver and radio No power to radio Rover receiver is The base station receiver not receiving is not broadcasting radio Incorrect over air baud rates between reference and rover Incorrect port settings between roving external radio and receiver The radio antenna cable and GNSS antenna cable are mixed up Check the charge on the external battery and if applicable chec
104. ware Selection window appears This screen prompts you to select the software that you want to install on the receiver 5 From the Available Software list select the latest version and then click Next The Settings Review window appears This screen prompts you to connect the receiver suggests a connection method and then lists the receiver configuration and selected operation 100 NetR8 GNSS Reference Receiver User Guide Upgrading the Receiver Firmware B If all is correct click Finish Based on the selections shown above the Software Upgrade window appears and shows the status of the operation for example Establishing communication with your receiver Please wait Click OK The Software Upgrade window appears again and states that the operation was completed successfully To select another operation click Menu to quit click Exit If you click Exit the system prompts you to confirm Click OK Forcing the receiver into Monitor mode If the receiver will not go into Monitor mode to load new firmware complete the following steps 1 2 3 4 5 Turn off the receiver Press and hold Y while turning on the receiver Continue to hold the Y button as the display shows the countdown timer Once the display shows Remote Monitor Active 1 release the 7 button The receiver is forced into Monitor mode and you can load the new firmware NetR8 GNSS Reference Receiver User Guide 101 B Upgrading the Recei
105. wer over Ethernet Power consumption Reference station operation times on internal battery Certification higher Power source supply Internal External is hot swap capable in the event of power source removal or cut off Power input on Lemo ports is 9 5 V to 28 V DC external power input with over voltage protection Receiver will auto power on when connected to external power of a user defined voltage The default value is 15 V Requires a Class 3 Ethernet power supply 4 3 W typical when using a Zephyr Geodetic 2 antenna Up to 12 hours Part 15 247 FCC certifications Class B Device FCC Part 15 and ICES 003 certifications RSS 310 and RSS 210 Industry Canada certifications CE mark compliance C tick mark compliance UN ST SG AC 10 11 Rev 3 Amend 1 Li lon Battery UN ST SG AC 10 27 Add 2 Li lon Battery WEEE Communication specifications Feature Specification Communications Port 1 D9 male Port 2 OS 7P Lemo Port 3 OS 7P Lemo RJ45 Jack Full 9 wire RS 232 3 wire RS 232 1PPS output event input DC power input 5 wire RS 232 DC power input Ethernet PoE NetR8 GNSS Reference Receiver User Guide 79 8 Specifications Feature Specification Bluetooth External GSM GPRS cellular phone support Receiver position update rate Data Input and Output Outputs Fully integrated fully sealed 2 4 GHz Bluetooth Cellular phone or GSM GPRS modem inside TSC2 controller 1 Hz 2 Hz
106. y leaks avoid contact with the battery fluid If battery fluid gets into your eyes immediately rinse your eyes with clean water and seek medical attention Do not rub your eyes If battery fluid gets onto your skin or clothing immediately use clean water to wash off the battery fluid WARNING Charge and use the rechargeable Lithium ion battery only in strict accordance with the instructions Charging or using the battery in unauthorized equipment can cause an explosion or fire and can result in personal injury and or equipment damage To prevent injury or damage Do not charge or use the battery if it appears to be damaged or leaking Charge the Lithium ion battery only in a Trimble product that is specified to charge it Be sure to follow all instructions that are provided with the battery charger Discontinue charging a battery that gives off extreme heat or a burning odor Use the battery only in Trimble equipment that is specified to use it Use the battery only for its intended use and according to the instructions in the product documentation Power over Ethernet safety N N WARNING When this product is connected to a Power over Ethernet PoE connection the source of the Ethernet power must meet IEEE 802 11af and its DC output Ethernet power source must be completely isolated from earth ground floating If this is not done a shock hazard may exist WARNING When this product is connected to
Download Pdf Manuals
Related Search
Related Contents
Xavier Willemart Manuale utente Samsung Färglaserskrivare ProXpress C2670FW Bruksanvisning Manuale di installazione e manutenzione Ionizzatore a barra Copyright © All rights reserved.