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NetRS GPS Receiver User Guide

1. 48 Updating the Receiver Firmware 000 49 Downloading the firmware Upgrade 50 Uploading the firmware o a 50 Installing the firmware Upgrade o o 50 NetRS GPS Receiver User Guide Contents Logging and Managing Data 53 Data Logging Sessions ee e e 54 Creating or editing a session o o a 56 Enabling a Session o o e a a O E e e 56 Disabling asession o coes n reee e a a e 56 Data Pormats 0 ii E A E E oe Bn A eo oe 56 Naming Files s ile o cs ek ie de eet dg A ere 56 Auto Delete cys tha ia Ae a o id 57 Managing Files Through the Web Interface 58 Store les s iale dara da de Be E 58 Sorting TES ca ees a A A elas ee 59 Downloading files o o a 59 Deleting files 20 ico a ae ato os dd AAS a 59 Managing Files Using FTP o oo o 60 Real Time Data and Services 63 Streamed Data Services o ee 64 EA ES aoe 64 Ii 36 4 Gekko a 2 ee he Ee ee etd 64 BINEX s natillas id a 65 CMR inne A a td etan acy yee td 65 REC Monel a gs he ay As ae Be ae e acl apt 65 Collecting Data as a Client o oo 66 Other System Information 67 Default Settings 2 e 68 Specifica o s te o ta owe a IR a 70 Cables and Connectors e 73 POTES EE A Eh acc A o IE A e chee 73 Cables and connecto
2. The angle below which the receiver will not track satellites Normally set to 13 degrees to avoid interference problems caused by buildings and trees and multipath errors European Geostationary Navigation Overlay Service 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 satellite s position Available as broadcast ephemeris or as postprocessed precise ephemeris A means of coordinating two communicating devices so that one transmits data only when the other is prepared to receive it File Transfer Protocol The standard high level protocol for transferring files from one network node to another using TCP IP A user charged with maintaining a network of two or more receivers This role includes functions such as initializing and maintaining communication configurations managing user authentication and security performing remote maintenance and updating firmware A user who will change the configuration of the GPS data logging and streams service of one or more receivers 96 NetRS GPS Receiver User Guide GPS raw data GPS time L1 L2 main service multichannel receiver multipath NMEA null modem Glossary The data collected by a GPS receiver for the purpose of processing at a later time It can be in the form of a dat file Trimble raw data file format or a RINEX file A measure of time use
3. Configuring the Receiver Through a Web Browser This section briefly describes the interface that you use when you access the receiver through a web browser You can configure the receiver through the Ethernet port or through a serial port that provides a PPP link to the receiver Web based menu The following table briefly describes options in the NetRS web based menu system For more information refer to the NetRS Help To access the help click Table 5 1 Web based menu options Main menu Use the sub menu screens to option Receiver View basic parameters such as system name IP address and firmware Status version Modify the system name View a list of the SVs being tracked files being logged a list of currently active streams power supply voltages and the receiver internal temperature View the currently computed GPS position DOP and clock offset Satellites View a summary of current satellite activity View a detailed table of current satellite activity Enable or disable individual satellites Control and configure the receiver for WAAS View a text version of the almanac ephemeris UTC time and ionospheric model data broadcast by GPS satellites Data Logging View and manage logging sessions Manage file space through the Automatic File Deletion mode Shut down the receiver between sessions Set the wakeup alarm View logged data files Access and download logged files For more informatio
4. 84 NetRS GPS Receiver User Guide Other System Information 8 NetRS receiver Office computer connection gt gt connection Figure 8 3 Null modem adapter wiring Creating a PPP connection 1 Click Start Settings Network and Dial up Connections Make New Connection The Network Connection wizard appears After you select the required option in each wizard dialog click Next to continue Select Connect directly to another computer Select Guest From the drop down list select the communication port you want to use For example Communications cable between two computers COM1 Select the required availability of this connection For all users or Only for myself Enter a name for the connection For example NetRS PPP on COM1 Click Finish NetRS GPS Receiver User Guide 85 8 Other System Information Configuring a PPP connection 1 Inthe Network and Dial up Connections dialog right click the connection you just created then select Properties from the menu A dialog appears Show con in tachbes when connected 2 Inthe General tab click Configure y Cosrarracabons cable bahasan tre compden COMA a Inthe Maximum speed Memnwedtot fam E bps field select see J 1 15200 Crate hasten flow contact IT Erabide moden seca cantsol b Clear the Enable SS hardware flow control check box Click OK 86 NetRS GPS Receiver User Guide Other System Information 8 In the Options tab clear the
5. Independent Exchange rover RS 232 Recommended Standard RTCM serial port service session tracking UTC WAAS Glossary A set of standard definitions and formats to promote the free exchange of GPS data and to facilitate the use of data from any GPS receiver with any software package Any mobile GPS receiver and field device collecting data in the field A roving receiver s position can be differentially corrected relative to a stationary base GPS receiver This was originally a nine wire interface standard for teletype machines from the Electronics Industry Association It is the standard for computer serial port transfers Radio Technical Commission for Maritime Services The body responsible for defining and updating the RTCM SC 104 standard The communications port on a computer This is also called the COM or RS 232 port It is called serial because although it has nine pins and many wires the PC sends data on only one wire and receives data on one other wire Information provided by the receiver or a protocol that is used to exchange data between the receiver and an external device A period during which one or more GPS receivers log satellites and measure data The process of receiving and recognizing signals from a satellite Universal Time Coordinated A time standard based on local solar mean time at the Greenwich meridian See also GPS time Wide Area Augmentation System NetRS
6. Oparmfile filename dat The values for antennacode are e G2 D amp M Choke Ring antenna e GZ Zephyr Geodetic antenna The following example converts DAT files that were created from TOO files to a RINEX file for data collected with a D amp M Choke Ring antenna and including L1 and L2 S N values s1 and s2 parameters e dat2rin PBO oPBO APBO aG2 s1 s2 filename dat DAT files created from RT17 files do not contain as much meta information about the data collection You must use a parameter file to specify header fields for which insufficient information is available in the DAT file An example parameter file dat2rin opt is provided This NetRS GPS Receiver User Guide 81 8 Other System Information file includes full specification of the input and output file names and all other controls and header fields required for PBO data collection After editing this parameter file the example dat2rin command is e dat2rin Odat2rin opt Note A complete description of the operation of dat2rin is provided in the file Dat2rin rtf in the Doc directory on the CD 82 NetRS GPS Receiver User Guide Other System Information 8 Setting Up a PPP Connection This section describes how to set up a direct Point to Point PPP connection for Linux and Windows operating systems Linux Operating System To use PPP with the NetRS receiver as the server and the Linux operating system as the client 1 Connect the se
7. 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 OR IN 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 HE MAXIMUM EXTENT PERMITTED BY PPLICABLE LAW IN NO EVENT SHALL RIMBLE OR ITS SUPPLIERS BE LIABLE FOR NY INDIRECT SPECIAL INCIDENTAL OR ONSEQUENTIAL DAMAGES WHATSOEVER NDER ANY CIRCUMSTANCE OR LEGAL HEORY RELATING IN ANYWAY TO THE RODUCTS 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 Becaraea Export Import R
8. FTP and the propor paraad ona a Dead Eh delo bti e Vow edu TY cassit wae FTP pareas oaan Dapa FTP Serves Der Veo Sadd Pen Chan acu commer te Port 21 For Anonymous and Named FTP make sure that you enable or disable access to the File deletion option as required The receiver provides three options for FTP transfer e Anonymous FTP log in as anonymous or ftp Named FTP log in as netrsFTP e Administration FTP log in as adminFTP 60 NetRS GPS Receiver User Guide Logging and Managing Data 6 Administration FTP for the system administrator is normally used only for installing and managing firmware Trimble recommends that you do not manage logged data from this account To access logged data through FTP users or automated clients would normally use Anonymous FTP or Named FTP Files are created in subdirectories as specified for each session Each session has a session identifier character For more information see Naming Files page 56 The directory naming options support moderate sized directories using the default YY YYMM naming scheme They also support detailed directory structures using the day and or session identifier When you use this default scheme you can navigate the FTP directory quickly and easily To access the files remotely through FTP navigate the directory path to the required timeframe then transfer and or delete files as required FTP sessions always start at t
9. GPS Receiver User Guide 99 Glossary 100 NetRS GPS Receiver User Guide Index Numerics 1PPS 72 76 A access disabled 9 accessing data from RT17 and Trimcom services 66 accessing files 4 accuracy 71 alarm waking up the receiver from sleep mode 19 almanac and ephemeris erasing 21 almanacs 8 antenna connector 16 mounting 30 options 72 auto answer mode 45 battery power 16 BINEX 7 8 32 47 56 64 65 BNC port 16 button functions 18 C C A code and carrier phase 70 cable pinout information 74 changing Ethernet configuration 40 global settings 5 modes 79 receiver configuration 79 closing a PPP session 89 CMR See Compact Measurement Format command strings external sensors 47 communication features 71 ports 71 communications IP 4 Compact Measurement Format 8 49 CompactFlash card storage in hours 54 configuration file 77 79 Configuring a PPP connection 86 configuring a modem for auto answer 45 GPSBase GPSNet 48 Met Tilt sensors 47 the receiver 4 36 41 the receiver for an external sensor 47 connecting to the Internet 36 connector pinout information 74 contents of file directory 58 NetRS GPS Receiver User Guide 101 Index Continuously Operating Reference Station 4 9 control software features 72 controls front panel 12 Conxall connector 16 CORS See Continuously Operating Reference Station D DAT to RINEX file conversion 81 data formats 56 logging 54 storing 54 dat
10. N A N A N A N A N A use slowly NetRS GPS Receiver User Guide 25 3 Features and Functions 26 NetRS GPS Receiver User Guide CHAPTER Setting Up the Receiver In this chapter m Setup Guidelines m Connecting the Receiver to Other Devices NetRS GPS Receiver User Guide 27 4 Setting Up the Receiver This chapter describes how to set up the NetRS receiver and how to connect the receiver to other devices Setup Guidelines Consider the following guidelines when you set up the receiver Environmental conditions The NetRS receiver has a waterproof housing However you should take reasonable care to keep the unit dry To improve the receiver performance and long term reliability avoid exposing the receiver to extreme environmental conditions such as Water Heat greater than 65 C 149 F Cold less than 40 C 40 F Corrosive fluids and gases Sources of electrical interference Do not locate the GPS antenna near the following sources of electrical and magnetic noise Gasoline engines spark plugs Televisions and computer monitors Alternators and generators Electric motors Equipment with DC to AC converters Fluorescent lights Switching power supplies 28 NetRS GPS Receiver User Guide Setting Up the Receiver 4 Uninterruptible power supply Trimble recommends that you use an uninterruptible power supply UPS to supply power to the receiver A UPS protects the equipment from power surges a
11. Prompt for name and password certificate etc check box 4 Inthe Security tab select Typical recommended settings NetRS GPS Receiver User Guide 87 8 88 Other System Information 5 Inthe Networking tab a In the Type of dial up server I am calling field make sure that PPP is selected In the Components checked are used by this connection group clear the check boxes for File and Printer Sharing for Microsoft Networks and Client for Microsoft Networks Select Internet Protocol TCP IP and then click Properties Make sure that the check boxes for Obtain an IP address automatically and Obtain DNS server address automatically are selected NetRS GPS Receiver User Guide MARS PPP os Com Properter Goren Orbo Seaway Metas Sharing Type cf dabup server an cali PPP Winches TSAN TAAI hterat You can get IP ming anged sdonadxaly t you minat upped the capabdty hemia pou need o pi pas rebar A do fre aporte IP rete E Otten an P edbers automatically C Une the hor IP adders p G Dran OWS serves actress stcrnatically C Une the kimo DNS serve adihesiec Other System Information 8 e Click Advanced Clear Advanced CPAP Sn O o TE the Use default Genen DMS WANS Optoma ateway on remote A lg er amp y ha comal be sent an the local netewt i lor dad do he daup res network check box T Une deina gateovay on mecie natrat Make sure tha
12. Trimble NetRS GPS receiver Even if you have used other Global Positioning System GPS products before Trimble recommends that you spend some time reading this manual to learn about the special features of this product If you are not familiar with GPS visit the Trimble website www trimble com for an interactive look at Trimble and GPS this publication assumes that you are familiar with the Microsoft Windows operating system and know how to use a mouse select options from menus and dialogs make selections from a list and refer to online help About the NetRS The NetRS receiver is a dual frequency GPS receiver that runs on a Linux operating system and communicates mainly through local and wide area networks You can operate the receiver as a stand alone reference station or integrate it into a scalable network You will use an office computer to configure the receiver access files or publish data files to a company intranet or to the Internet The NetRS receiver makes it easy for you to set up a powerful flexible and reliable reference station for continuous operation NetRS Receiver User Guide 1 1 2 Introduction Related Information Sources of related information 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 e Trimble training courses consider a training course to help
13. access to the receiver by specifying a range of IP addresses that are authorized to connect to the receiver The receiver will not respond to attempts to connect from a non specified IP address Note You must specify valid IP addresses If the specified IP addresses do not match at least one of those used to connect to the NetRS receiver you will not be able to communicate with the receiver Configure FTP access policies including passwords for named FTP accounts Change or enable and disable the default FTP ports Control access for anonymous FTP named account data files and system files for firmware upgrades Configure the receiver for one or more NTP servers Send notification messages to selected computers on a network with information about the available services and the ports on which those services are enabled For more information on FTP access for logging data see Chapter 6 Logging and Managing Data For more information on FTP access for updating the firmware see Updating the Receiver Firmware page 49 NetRS GPS Receiver User Guide 43 5 Configuring the Receiver Table 5 1 Web based menu options continued Main menu Use the sub menu screens to option 1 0 Control serial port and TCP UDP REP port configurations and services Configuration including PPP GPS data streaming and RTK correction services Define the precise station position station ID and the station name used for RTK
14. be greater than 1000 knots or its altitude is computed to be above 18 000 meters approximately 59 000 ft The receiver GPS subsystem will reset until the security threat COCOM situation clears As a result all logging and stream configurations will stop until the GPS subsystem is cleared NetRS GPS Receiver User Guide 9 2 Overview 10 NetRS GPS Receiver User Guide CHAPTER Features and Functions In this chapter m Features of the Receiver m Button Functions m LED Functions NetRS GPS Receiver User Guide 11 3 Features and Functions This chapter describes the physical features of the NetRS receiver It also describes how to perform some basic receiver functions Features of the Receiver All operating controls ports and connectors on the receiver are on the front or the rear panels see Figure 3 1 Rear panel Front panel Figure 3 1 Receiver front and rear panels 12 NetRS GPS Receiver User Guide Features and Functions 3 Front panel Figure 3 2 shows the features on the front panel The following tables describe the features For more information see Button Functions page 18 and LED Functions page 22 DE9 connector Power button t EXTERNAL FREQUENCY mi w Ethernet Logging External Satellites frequency Figure 3 2 Front panel features Feature Description DE9 port Provides a service port for initial Ethernet address configuration and diagnostics The service
15. format 2 1 2 2 2 3 is an alternative method for sending data to users in the field It allows compatibility with non Trimble rover receivers NetRS GPS Receiver User Guide 65 7 Real Time Data and Services Collecting Data as a Client To access GPS data from an RT17 or BINEX service the client simply needs to know how to open a TCP connection to the receiver The RT17 data is Trimble proprietary while BINEX format description is open and described on the UNAVCO website To access GPS data from a Trimcom service the client must know the binary commands used to enable data streaming This service is intended primarily for use by GPSBase and GPSNet software The Trimcom command set is a Trimble proprietary format 66 NetRS GPS Receiver User Guide CHAPTER Other System Information In this chapter Default Settings Specifications Cables and Connectors 1PPS Output Deployment Issues NetRS Support Software Setting Up a PPP Connection NetRS GPS Receiver User Guide 67 8 Other System Information Default Settings The following table shows the default settings for the NetRS GPS receiver Setting Default value Sysadmin password Antenna Clock steering Multipath reduction Elevation mask PDOP mask One pulse per second output Reference frequency GPS satellites WAAS Reference station netrs Type 86 Zephyr Geodetic SN00000000 Height 0 00 meters Height method Bottom of antenna
16. one directory at a time starting at the root directory To navigate to another directory click the directory name in the list To move up from the subdirectory toward the root directory click the parent directory link Directory contents Each directory title shows the directory path This is followed by a table that shows the directory contents All subdirectories are listed first along with the date and time that the contents of that subdirectory 58 NetRS GPS Receiver User Guide Logging and Managing Data 6 were last modified Then all of the data files are listed Each list shows the name of the file the date when it was last modified and the file size in bytes Note The modification time is not when the file was created It refers to the most recent time when data was written to the file which is usually the time that the data logging session ended Sorting files To sort the directory list click a column heading For example click Name to sort the list by file or directory name or click Modified to sort by the modification date from earliest to latest The selected column heading appears in bold Click the column heading again to reverse the order of sorting Regardless of the sorting method all directories are listed first followed by the data files Downloading files To download a file to the computer running your web browser click the icon or name of a data file An Open or Save dialog appears When
17. operating system 83 104 NetRS GPS Receiver User Guide PPP with the Windows operating system 84 pseudo range measurements 70 publishing 54 pulse definition 1PPS 76 Q query service 7 71 query string external sensor 47 R radar transmissions 9 radio modem 45 radio signals 9 Radio Technical Commission for Maritime Services 8 49 72 radios supported 34 receiver configuring 4 36 41 configuring for an external sensor 47 performing basic functions 12 physical features 12 setting up 28 updating firmware 49 viewing status 78 re connecting a PPP session 90 reference station 4 Regulations and Safety iii release notes 2 RS232 cable 38 RT17 7 48 64 72 RT17 to DAT file conversion 81 RTCM See Radio Technical Commission for Maritime Services S Safety and Regulations iii satellite LED 23 security levels 4 service query 7 streaming 6 setting up the receiver 28 settings changing 5 shock features 71 Sleep mode 19 software utilities 80 sorting files 59 storage temperature 71 streamed data services 64 streaming service 6 support 2 SV status 8 system activity monitoring 78 system features 70 T TOO to DAT file conversion 80 TA See terminal adapter technical assistance 2 technical support 2 temperature operating 28 71 storage 71 terminal adapter 45 Trimble support 2 Trimcom 48 Index U U S Department of Commerce 9 uninterruptible power supply 29 updating receiver firmware 49 UPS See un
18. prompted enter the directory and file name Once you click OK or the equivalent button the download begins While downloading a file the browser displays a progress dialog Deleting files To delete a data file e Click X next to it To delete all files and subdirectories 1 Goto the end of the file list 2 Click X on the line Delete ALL FILES AND SUBDIRECTORIES in this directory NetRS GPS Receiver User Guide 59 6 Logging and Managing Data Managing Files Using FTP To list download or delete logged data files from the data logging memory use any standard FTP client NetRS FTP access must be enabled for the given function Select the Internet screen and then the FTP Setup screen to define FTP access policies and passwords and to change the default FTP port Rated wah Debie r pagent uing do arms ncagraad a Ty com ae FTP te acions geod dete lins No pasari a oguei He o aa bts ll bedid v e lew Anpas umg be ns magmen or Thy cam sae FTF be aora bagged dta Bes Ha pannor a separa deser a san sanm aema Me Drvehind Acre FTE y net madik Mn FTP cam eren bogged des fer mng FT ant be proper perro Tor pei TI cow deere Sa aaa Sates oe w bi banc te Enabimd m s Dieters pesemas eras ds hanged Dor wena TE can acre kapd des Bu wag FTP ant the proper paermord Tor wei TE comet den as Tor seme TE conmot coe PTF Atededer ets TIT z sl TT Paret Vox ode TF can plied a dies freeware las wang
19. up NetRS GPS Receiver User Guide 39 5 Configuring the Receiver Changing the Ethernet configuration After you configure the receiver as described in the previous section you can change the Ethernet address configuration or add Domain Name System DNS information the IP address of one or more DNS servers a domain name and a domain search path You can make these changes from the Ethernet configuration screen Once you have the receiver IP address open the required web pages and complete the network configuration as follows 1 From a host computer with a network connection to the receiver open a web browser such as Internet Explorer or Netscape 2 Inthe URL address field of the browser enter http followed by the IP address of the NetRS receiver For example to access the receiver web server home page for the configuration in Figure 5 1 enter http 10 1 80 74 Note You must configure your web browser to bypass any proxy server in use for the connection to the NetRS receiver 3 From the NetRS main menu select Internet The Internet Configuration Ethernet screen appears Internet Canfigaration Ethernet De itenni hao ng Sir LP vto Sat Pee Sate oe Barras ad fal 1000 A A s m 4 Click Modify In the Ethernet Configuration screen that appears change the existing IP address configuration or enter DNS information as required 40 NetRS GPS Receiver User Guide Configuring the Receiver 5
20. using a parity bit that is used in binary digital data storage and transfer Options for parity checking include Even Odd or None An extra bit added to a group of bits The parity bit can be a0 or 1 value so that every byte will add up to an odd or even number depending on whether odd or even parity is chosen The latitude longitude and altitude of a point An estimate of error is often associated with a position A person or a computer who obtains data file s from one or more receivers on a systematic basis This includes any server that mirrors or delivers data Pulse per second An electrical pulse output by the receiver every second and used by external hardware for precision timing applications A sequence of digital 1 s and 0 s that appear to be randomly distributed like noise but that can be exactly reproduced PRN codes have a low autocorrelation value for all delays or lags except when they are exactly coincident A computer that obtains real time data streams from one or more receivers and provides useful services based on that data Clients include GPSBase GPSNet or VRS software or any program that requires real time data streams for operation A method of GPS surveying in real time using short stop and go occupation while maintaining lock on at least four satellites This method requires a wireless data link between the base and rover receivers 98 NetRS GPS Receiver User Guide RINEX Receiver
21. you use your GPS system to its fullest potential For more information visit the Trimble website at www trimble com support html Technical Assistance If you have a problem and cannot find the information you need in the product documentation contact your local dealer If you need to contact Trimble technical support 1 Go to the Trimble website www trimble com 2 Click the Support button at the top of the screen The Support A Z list of products appears 3 Scroll to the bottom of the list 4 Click the submit an inquiry link A form appears 5 Complete the form and then click Send Alternatively you can send an e mail to trimble_support trimble com Your Comments Your feedback about the supporting documentation helps us to improve it with each revision E mail your comments to ReaderFeedback trimble com NetRS Receiver User Guide CHAPTER Overview In this chapter The Network Appliance Concept NetRS Services Use and Care Electronic Interference Security Threat COCOM Limits NetRS GPS Receiver User Guide 3 2 4 Overview This chapter introduces the NetRS GPS receiver This receiver makes it easy to deploy a powerful flexible and reliable Continuously Operating Reference Station CORS The NetRS receiver integrates the latest dual requency GPS technology into a Linux processing and communications framework that can operate as a stand alone reference station or can be integrated into a sc
22. 17 service can open additional TCP sessions while the NetRS receiver receives and logs the primary RT17 data An RT17 service can be used if there are multiple clients requiring the same streamed data or when a client is unfamiliar with the Trimcom protocol Trimcom With the Trimcom service the client uses a subset of the standard Trimble TRIMCOM binary communications interface to request ephemeris and time updates and other data The client must first enable an RT17 stream on this connection using Trimcom commands to control the data rate and the rate and content of the data stream The client can also send a query for additional information NetRS GPS Receiver User Guide Real Time Data and Services 7 The Trimcom client must be active to enable the data stream There can be only one Trimcom service defined on the receiver and only one client can use this service at a time The Trimble GPSBase and GPSNet applications are the most common clients of the Trimcom service when active links are required Alternatively they may operate as a passive client to an RT17 stream BINEX The BINEX service provides GPS observations ephemerides and other information that you select For full information on each message type go to the UNAVCO website at http binex unavco org CMR The Trimble proprietary CMR service offers RTK users a compressed data format to work with when using RTK RTCM The RTCM service using
23. 8 8 CTS l 8 RTS O 8 CTS I 15 GND 9 RI I 9 RI O 9 RI 1 16 ET_RD_MINUS I RJ45 Pin 6 17 ET_TD_MINUS O RJ45 Pin 2 19 ET_ LED O 21 RX I 74 NetRS GPS Receiver User Guide Other System Information 8 Port 1 Port 2 Port 3 Port 4 Primary power Ethernet F DE9 M DE9 F DE9 M DE9 M DA26 22 ET_GND O RJ45 Pin 7 23 GND 25 ET_RD_PLUS I RJ45 Pin 3 26 ET_TD_PLUS O RJ45 Pin 1 Key O Output from the receiver 1 Input to the receiver Duplicate bs Duplicate NetRS GPS Receiver User Guide 75 8 Other System Information 1PPS Output The NetRS GPS receiver can output a one pulse per second 1 PPS time strobe The pulse is output from the 1PPS port through a BNC cable 1PPS Pulse Definition The leading edge of the pulse coincides with the beginning of each UTC second as shown in Figure 8 1 The pulse is driven by an RS 422 driver between nominal levels of 0 V and 7 2 V The leading edge is positive rising from 0 V to 7 2 V ft Seconds m A Time tag output veal Time tag applies here Figure 8 1 Time tag relation to 1PPS wave form The pulse is approximately 8 usec wide with rise and fall times of about 100 nsec Resolution is approximately 40 nsec but several external factors limit accuracy to approximately 1 usec e Position errors especially with user entered reference Each meter of error can result
24. EGNOS support Clock steering Configuration cloning 70 NetRS GPS Receiver User Guide Other System Information 8 Feature Specification Data storage Memory 1 GB CompactFlash card 150 MB internal 3400 hours of raw data observables based on recording data from 7 satellites at 15 sec epoch Multiple TOO and BINEX file logging Continuous logging sessions Query services SV data Ephemeris Almanac Accuracy Static 5mm 1ppm horizontal RMS 10mm 1ppm vertical RMS Electrical 12 32 V DC external power input with over voltage protection 2 Power ports primary and secondary Remote power cycling through an IP command Power Less than 3 Watts for receiver only consumption 3 5 Watts with a Dorne amp Margolin Choke Ring antenna 4 0 Watts with a Zephyr Geodetic Size 22 8 cm W x 6 5 cm H x 14 cm D 9 W x 2 6 H x 5 5 D Weight 1 6 Kg 3 5 lbs Environment Operating temperature 40 C to 65 C Storage temperature 40 C to 75 C Waterproof to IPX5 Fully sealed from sand dust and moisture Humidity 100 non condensing Shock Shock tested to MIL 810 F Table 516 5 I to survive a 1 m approximately 3 ft drop onto hard surface Vibration MIL 810 F Figure 514 5c 17 vibration levels on each axis Communication 4 standard DE9 RS 232 ports including 3 with full modem control lines 1 RJ45 10Base T Ethernet port All functions web GUI access FTP file transfer RT17 streaming and remot
25. Ethernet connection N j Figure 3 4 Multi port adapter detail NetRS GPS Receiver User Guide 15 3 Features and Functions Table 3 1 Rear panel features Feature Description N connector Connects to the GPS antenna Multi port adapter Primary power port AC to DC power supply connects through an inline DA26 male port DC power jack Ethernet port connects to a 10Base T network through an RJ45 jack BNC ports two One PPS output External frequency input DE9 male ports Connects to a DCE device such as a modem or a terminal adapter two DE9 female port Connects to a DTE device such as a computer Note The 3 rear panel ports include full 9 pin connections that provide all the signals required to support a modem or other communications device A serial port can be configured for either direct or modem connections A modem connection supports all the signals necessary for auto answer operation using the Linux communication protocol mgetty daemon For more information see Cables and Connectors page 73 2 pin Conxall Secondary power port connector Backup battery power connects through a DC power cable P N 48600 16 NetRS GPS Receiver User Guide Features and Functions 3 Power ports The NetRS receiver has two power ports e Primary connects to the DA26 connector on the rear panel through an inline DC power jack on the multi port adapter Intended for use onl
26. NetRS GPS Receiver User Guide Version 1 11 i m Revision A D Trimble November 2004 t Corporate Office Trimble Navigation Limited Geomatics and Engineering Division 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 Copyright and Trademarks 2003 2004 Trimble Navigation Limited All rights reserved Trimble and the Globe amp Triangle logo are trademarks of Trimble Navigation Limited registered in the United States Patent and Trademark Office and in other countries CMR EVEREST NetRS TRIMCOMM TRIMMARK TRIMTALK and Zephyr are trademarks of Trimble Navigation Limited Microsoft and Windows 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 is covered by the following patents US 5148179 5187450 5202694 5311149 5402450 5493588 5515057 5519620 5602741 5757646 6252863 6175848 US and Foreign patents pending Release Notice This is the November 2004 release Revision A of the NetRS GPS Receiver User Guide It applies to version 1 11 of the NetRS GPS receiver The following limited warranties give you specific legal rights You may have others which vary from state jurisdiction to state jurisdiction Product Limited Warranty Subject to the terms and
27. PS Receiver User Guide 5 2 6 Overview receiver Any changes the operator makes to global settings such as masks affects all clients 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 The NetRS receiver provides the following standard configuration and data logging services Use to perform FTP remote manual and or automated operations to manage the logged data file space all manual and automated configuration operations HTTP manual operations to manage the logged data file space HTTPS the same functions as the HTTP link except that all data that is sent between the office computer and the receiver is encrypted which makes the link more secure NetRS Services The receiver can provide one or more streaming or query services over an RS 232 serial port or a TCP IP port Protocol service A protocol service provides functionality over a two way link PPP enables IP communications over an RS 232 serial link Trimcom is a binary protocol used by Trimble PC software applications Met Tilt provides sensor query and data logging Streaming service Any client with authorized access can obtain streamed information such as GPS measurements or RTCM corrections without having to control or issue commands to the receiver The client simply connects to the port t
28. S Support Software This section describes the data format conversion programs and the software utilities that are provided on the NetRS GPS Receiver CD Data Conversion The following data format conversion programs are provided on the CD TOO to DAT file conversion Program runpkr00 This program converts internally logged TOO format files to the DAT format To print the file with full usage information enter e runpkr00 To create a DAT file enter e runpkr00 dv filename T00 To concatenate multiple consecutive continuously logged files for example when converting hourly files to a single 24 hour file enter one of the following e runpkr00 dv filenamel TOO filename2 T00 runpkr00 dv listfile Listfile contains a list of the TOO files to be converted one filename per line 80 NetRS GPS Receiver User Guide Other System Information 8 RT17 to DAT file conversion Program rt172dat This program converts streamed RT17 data to the DAT format e Linux operating system rt172dat lt rt 7filename gt filename dat 2 gt dev null e Windows operating system rt172dat lt rtl7filename gt filename dat 2 gt null DAT to RINEX file conversion Program dat2rin This program converts DAT format files that were created by runpkr00 or rt172dat to the RINEX format The following example shows some of the basic usage for this program e dat2rin runby oobserver Aagency aantennacode
29. This service provides a variety of information about the current GPS and WAAS EGNOS constellation Query 8 NetRS GPS Receiver User Guide Overview 2 Use and Care The NetRS receiver is designed to withstand the treatment and environment that typically occurs in a CORS installation However the receiver is a high precision electronic instrument and should be treated with reasonable care Caution Operating or storing the NetRS receiver outside the specified temperature range can damage it For details see Specifications page 70 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 Do not locate the receiver or antenna within 400 meters of powerful radar television or other transmitters or GPS antennas Low power transmitters such as those in cell phones and two way radios normally do not interfere with NetRS receiver operations Security Threat COCOM Limits The U S Department of Commerce requires that all exportable GPS products contain performance limitations so that they cannot be used in a manner that could threaten the security of the United States The following limitations are implemented on the NetRS receiver Immediate access to satellite measurements and navigation results is disabled when the receiver velocity is computed to
30. X service provides streamed GPS observables satellite orbits and various optional data about the site and receiver For more information about the BINEX format go to http binex unavco org Streaming NetRS GPS Receiver User Guide 7 2 Overview Service Description Type Met Tilt This service can be configured to send one or more device initialization and query strings on a regular basis to obtain measurements from external sensors These sensors include those used to collect meteorological data and or deformation data where the tilt of the sensor is measured Data from the Met or the Tilt sensor is included in any active RT17 or BINEX stream Depending on whether you are logging or streaming data all data is included in TOO BINEX or RT17 format Protocol RTCM This RTCM Radio Technical Commission for Maritime Services service can be configured to send one or more RTCM SC 104 messages from the specified port Streaming CMR CMR This service can be configured to provide real time GPS measurements in Compact Measurement Record format primarily for RTK applications that use CMR or CMR Streaming Ephemerides This service provides a complete set of GPS ephemerides orbits each time an application connects to the selected port Query Almanacs This service provides a complete GPS almanac each time an application connects to the selected port Query SV Status
31. a format conversion programs 80 data link for RTK 34 data logging creating a session 54 options 54 scheduling modes 54 data storage features 71 DCE baud rate 45 DES ports 16 Declaration of Conformity iii deformation data 47 deleting a PPP connection 90 files 59 dial up modem 45 disabled access 9 documentation feedback 2 downloading files 59 102 NetRS GPS Receiver User Guide E editing PPP connection properties 90 electrical features 71 interference 28 electronic interference 9 environment features 71 environmental conditions 28 ephemerides 8 erasing the almanac and ephemeris 21 Ethernet configuration 38 LED 23 port 16 71 Ethernet 100Base TX 36 Everest Multipath Rejection 70 external devices 45 power 71 external frequency input port 16 LED 23 specifications 72 external sensor command strings 47 F Failsafe wakeup alarm 19 features accuracy 71 antenna options 72 communications 71 control software 72 data storage 71 electrical 71 environment 71 inputs 72 Network time 72 outputs 72 positioning 71 power consumtpion 71 shock 71 system 70 vibration 71 files accessing 4 automatically deleting 57 deleting 59 directory contents 58 downloading 59 managing through the web interface 58 naming 56 sorting 59 firmware updating 49 flow control 45 front panel controls 12 FTP 4 functions button 18 G global settings changing 5 summary 78 GPS antenna connector 16 GPS performance m
32. alable network Because Internet Protocol IP is 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 In this manual all references to the Internet mean either a wide area network WAN or a local area network LAN connection The Linux framework provides a foundation that allows Trimble to extend and customize the system in ways which are not possible with a proprietary operating system Native support for standardized interfaces means that you can use a variety of powerful commercial and public domain software to work with the NetRS receiver 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 protected login for configuration changes and or file access Use the network management features to e Store the configuration of one receiver to a file and restore it to the same receiver at a future date or clone it to any other receiver in a network NetRS GPS Receiver User Guide Overview 2 e Create a base configuration with a variety of operating modes You can then enable those modes as necessary rather than having to change the global state of the receiver from one mode to another For example you can configure a number of streaming services with different measurement intervals or smoothing cont
33. amplitude in the range 6 to 13 dBm and a frequency tolerance within 5 ppm over temperature and time You can also use one of the following external off the shelf adapters to support a 5 MHz or a 20 MHz external reference source with a 7 to 13 dBm input range e 5 MHz Wenzel LNHD HF DOUBLER Wenzel P N 601 10726 Rev A e 20 MHz Wenzel LNFDN FREQUENCY DIVIDER Wenzel P N LNFDN 2 20 10 1 10 34 NetRS GPS Receiver User Guide CHAPTER Configuring the Receiver In this chapter m Setting up Communications m Configuring the Receiver Through a Web Browser m Configuring the Receiver for Connected Devices m Updating the Receiver Firmware NetRS GPS Receiver User Guide 35 5 Configuring the Receiver The NetRS receiver typically communicates through a network such as the Internet To configure the receiver access files and update the receiver firmware you must create an IP based link to the receiver This chapter describes how to connect the receiver to a network configure the receiver through the HTTP web interface configure the receiver for a connected device and install new firmware Setting up Communications Connect the receiver to a network or host computer through one of the following e The Ethernet 10Base T port Use a CATS cable to connect the receiver to a network hub or switch Alternatively use a crossover cable to connect directly to the receiver from a host computer e A PPP connection from a s
34. be used as one file Any 3D reference frame that locates objects in space A message included in the GPS signal that reports on the location and health of the satellites as well as any clock correction It includes information about the health of other satellites as well as their approximate position Data Communications Equipment The RS 232C interface that a modem or other similar communications device uses to exchange data with a computer Also called DGPS or differential correction The process of correcting GPS positions at an unknown location with data collected simultaneously at a known location usually a base station Dilution of Precision An indicator of the accuracy of a GPS position which takes account of each satellite s location relative to the other satellites in the constellation and their geometry in relation to the GPS receiver A low DOP value indicates a higher probability of accuracy Data Terminal Equipment The RS 232C interface that a computer uses to exchange data with a modem or other serial device NetRS GPS Receiver User Guide 95 Glossary dual frequency elevation mask EGNOS ephemeris flow control FTP GPS network administrator GPS operator A type of receiver that uses both L1 and L2 signals from GPS satellites A dual frequency receiver can compute more precise position fixes over longer distances and under more adverse conditions because it compensates for ionospheric delays
35. button until the External Frequency LED turns on at 15 seconds and then turns off at 30 seconds 2 Once the External Frequency LED turns off release the Power button The receiver performs a full reset All parameters including GPS orbit and tracking information are restored to the factory default values NetRS GPS Receiver User Guide 21 3 22 Features and Functions LED Functions The six LEDs on the front panel of the receiver indicate various operating conditions An LED that is constantly lit or is flashing slowly usually indicates normal operation An LED that is flashing quickly indicates a condition that may require attention An LED that is unlit indicates that no operation is occurring The possible LED states are LED state Description Flashing LED is on for second and off for Y second slowly Flash LED is on for 0 1 second every 0 2 seconds quickly Blinking LED is on for 1 second every 5 seconds Off LED is not lit On LED is continuously lit LED startup sequence When the receiver switches on all LEDs turn on for a few seconds flash until the boot up process is complete then operate normally The LED startup sequence shows if the receiver has started successfully When you switch on the receiver the LED startup sequence is 1 All LEDs turn on briefly 2 All LEDs turn off 3 LEDs operate normally If the LEDs do not turn off it means that the system has failed to sta
36. conditions set forth herein Trimble warrants that for a period of 1 year starting from the date of purchase this Trimble product including any software components 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 NetRS GPS Receiver User Guide limited warranty terms exclusions and limitations which shall control over the terms and conditions set forth in this limited warranty Software Updates Please refer to the Firmware heading of the NetRS GPS Receiver web site user interface for information about software updates available for this Product 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 relevant operator s manual and specifica
37. correction streams Set up the client authentication password to secure the datastreams for use only by authorized personnel Port advertising so the receiver can advertise to a specified IP address what services it offers and on which ports PPP Dialout can be used to dial out to an ISP Internet Service Provider to initiate a connection directly from the receiver For more information see Configuring the GPSBase or GPSNet software page 48 Security Control web based access to the receiver Access levels include System Controls IP and firmware modification GPS Controls GPS tracking and data logging access and File Access restricts web based access to internally logged files Firmware Upload and install new receiver firmware and additional extended warranties In Browser Control the appearance of the browser window The In Browser and Standalone Standalone Window options do nat relate to the operation of the NetRS Window receiver The default mode is In Browser where all screens include browser menus and toolbars If you prefer to have more screen area available to view and manipulate the NetRS web pages select Standalone Window A new window appears with menus and toolbars hidden You can close the Standalone Window and return to the default view when you want to 44 NetRS GPS Receiver User Guide Configuring the Receiver 5 Configuring the Receiver for Connected Devices This section describes how to configure the
38. d internally by the NAVSTAR system GPS time is based on UTC but does not add periodic leap seconds to correct for changes in the earth s period of rotation A unique identity number 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 service or service group selected in the equipment configuration A receiver containing many independent channels Each channel tracks one satellite continuously 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 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 A RS 232 cable connector with pins 2 and 3 reversed NetRS GPS Receiver User Guide 97 Glossary parity parity bit position post processed client PPS 1PPS PRN Pseudorandom number noise real time client Real Time Kinematic RTK A form of error checking
39. dit the network connection properties a Double click Network and Dial up Connections b Right click the connection to edit and then select Properties To edit the COM port settings do one of the following Open the Properties dialog see the previous step Then click Configure in the General tab Double click Phone and Modem Options In the Modems tab select the connection created in Step 4 on page 85 Click Properties Deleting a PPP connection 1 2 Select Start Settings Control Panel To delete a network connection a Double click Networking and Dial up Connections b Right click the connection to delete then select Delete This does not automatically delete the modem entry created for this connection 90 NetRS GPS Receiver User Guide Other System Information 8 3 To delete the modem entry a Double click Phone and Modem Options b In the Modems tab select the entry to delete then click Remove NetRS GPS Receiver User Guide 91 8 Other System Information 92 NetRS GPS Receiver User Guide Glossary This section explains some GPS terms and some of the terms used in this manual dat file The Trimble standard storage format data file for GPS data almanac A file that contains orbit information on all satellites clock corrections and atmospheric delay parameters It is transmitted by a GPS satellite to a GPS receiver where it facilitates rapid SV acquisition It can be transfe
40. e 1 From the VO Configuration screen select Reference Station 2 Enter the precise station coordinates and the station ID name to be used To create an RTK service 1 From the VO Configuration screen select the required serial port or select Create New TCP Port 2 Ifyou are creating a TCP IP port enter the port number 3 Select and configure an RTCM or a CMR service For more information on RTCM and CMR options refer to the online help Updating the Receiver Firmware The firmware update release is a complete self installing firmware package It is assembled using the Red Hat Package Manager RPM for Linux If you are an eligible and registered customer you will receive an e mail when a firmware upgrade is available for the NetRS receiver To obtain the firmware upgrade files go to www trimble com Download the NetRS firmware to your computer then use the web browser to install it on the NetRS receiver Alternatively log in as adminFTP and transfer the update through FTP You can then install the new firmware over HTTP NetRS GPS Receiver User Guide 49 5 Configuring the Receiver Downloading the firmware upgrade 1 In the advisory e mail click the URL link Alternatively enter or paste the URL into the web browser address field If a download dialog appears choose to save the file to your local hard disk The version number of the release is embedded in the file name It represents a na
41. e Receiver The 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 P N 33411 00 for GPS frequencies Cable type Maximum length for use without inline amplifier RG 214 30m LMR 400 55m LMR 500 70m LMR 600 85m Heliax LDF4 50 105m Heliax LDF4 5 40 140 m Met Tilt sensors You can connect the NetRS receiver to an external meteorological Met or Tilt sensor The receiver supports only one direct Met Tilt sensor connection For multiple sensors the solution is to daisy chain For more information see Daisy chaining devices page 33 The sensor responds to a request for information and the query and response are time tagged and stored in any TOO or BINEX file being logged or transmitted in an RT17 or BINEX data stream You can connect a Met or Tilt sensor to any RS 232 serial port Instruments which can collect meteorological data include e Paroscientific MET3 and MET3a www paroscientific com e Vaisala PTU200GPS and PTU200GPSMIK www vaisala com Instruments which can collect tilt data include e Applied Geomechanics D700 and MD900 series www geomechanics com NetRS GPS Receiver User Guide Setting Up the Receiver 4 Daisy chaining devices Typically when yo
42. e firmware upload can be performed through the Ethernet port or a PPP connection over a serial link At the same time one or more serial ports can be used for local CMR or RTCM correction transmission or a remote PPP dial up through a modem Basic configuration through the service port and Telnet Positioning 1 Hz 2 Hz 5 Hz and 10 Hz NetRS GPS Receiver User Guide 71 8 Other System Information Feature Specification Outputs Internal logging TOO Intervals 0 1 0 2 0 5 1 2 5 10 15 30 60 300 or 600 seconds RT17 Intervals 0 1 0 2 0 5 1 2 5 10 15 30 60 300 or 600 seconds BINEX Intervals 0 1 0 2 0 5 1 2 5 10 15 30 60 300 or 600 seconds CMR CMR and RTCM 2 1 and 2 3 PPS Sensor I O Met Tilt data logging for devices that support ASCII query response Inputs 10 MHz external frequency at 6 to 13 dBm with a 5 ppm tolerance over temperature and time Sensor I O Met Tilt data logging for devices that support ASCII query response Control software HTML web browser Internet Explorer v 5 0 or later and Netscape v 4 78 or later Network time Network Time Protocol Antenna option 1 antenna port that supports any Trimble survey antenna including the following recommended Trimble antennas e Zephyr Geodetic e Dorne amp Margolin Choke Ring 72 NetRS GPS Receiver User Guide Other System Information 8 Cables and Connectors This sectio
43. e serial communications data transfer speed from one binary digital device to another Baud rate is generally one bit per second See also bits per second The number of bits sent or received each second For example a baud rate of 9600 means there is a data flow of 9600 bits each second One character equals approximately 10 bits A BNC connector provides a secure easy to use means of connecting shielded cables to electronic equipment See Coarse Acquisition code 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 of the unmodulated fundamental output of a radio transmitter The GPS L1 carrier frequency is 1575 42 MHz The difference between the carrier signal generated by the internal oscillator of a receiver and the carrier signal coming in from the satellite A satellite measurement message that is broadcast by the base receiver and used by RTK surveys to calculate an accurate baseline vector from the base to the rover 94 NetRS GPS Receiver User Guide Coarse Acquisition code concatenate coordinate system data message DCE Differential GPS DOP DTE Glossary Also called C A code or civilian code The pseudorandom noise PRN code modulated onto a GPS L1 signal This code helps the receiver to compute the distance from the satellite To combine separate computer files so that they can
44. eceiver Enable Auto answer mode in the modem Use hardware flow control Program the modem to use RTS to hold off data when there 1s no active connection Note For flow control always use a rear panel DEY port Configuring a modem or terminal adapter 1 2 3 4 5 From the NetRS main menu select I O Configuration Select the serial port to configure If you are using a PPP server connection select PPP Select the baud parity and flow control If required when configuring the PPP service enter the local and remote IP addresses Select the required connection option Modem to enable the receiver to manage the auto answer operation Use this option for a PPP connection Direct if the modem is configured for auto answer If you are providing RT17 RTCM or CMR data a Select the required service b Enter the appropriate port and define the service parameters When you configure RTCM or CMR RTK corrections configure the ports as described in RTCM or CMR corrections page 49 46 NetRS GPS Receiver User Guide Configuring the Receiver 5 Configuring Met Tilt sensors All communication with Met Tilt external sensors is by ASCII strings through a receiver serial port The NetRS receiver supports the following forms of command strings to configure and query an external sensor e Initialization The receiver sends an initialization string to the sensor at the beginning of every
45. een data logging sessions This feature is particularly useful for sites with intermittent power or where batteries are used and charging Sleep mode In Sleep mode the receiver switches to low power when there is no active data logging session This allows for extended operation when the receiver is running on battery power Failsafe wakeup alarm When the receiver is in Sleep mode you cannot communicate with it until the receiver wakes up for the next scheduled session To avoid problems if there is no future session defined use the Failsafe wakeup alarm This activates the receiver for a short period at specific times every day To control Sleep mode select Data Logging and then set the following controls as required in the Power Saving screen or the Status screen e Shut down receiver between data logging sessions Select Yes for the receiver to go into the power saving mode when there are no active sessions Once the receiver is in this mode you cannot communicate with the receiver or use the browser interface until the receiver wakes up Select No to disable Sleep mode The receiver remains active between sessions e Wake up periodically Select Yes for the receiver to wake from Sleep mode for a short time at one or more periodic intervals every day regardless of the need for a data logging session This option allow you to establish communications with a receiver when there is no data logging session schedu
46. emits diagnostic information through the service port For example Figure 5 1 on page 39 shows the summary sequence that appears when you define a static IP address configuration When the message Do you want to change Ethernet Configuration appears enter yes Enter the new mode static IP address default gateway address and netmask Press Enter The new values appear in the summary followed by the message Accept New Configuration If the new values are correct enter yes 38 NetRS GPS Receiver User Guide Configuring the Receiver 5 Current Ethernet Port Configuration MAC address 00 60 35 00 C3 12 Mode dhcp IP 0 0 0 0 Netmask 255 255 255 0 Gateway 0 0 0 0 Do you want to change Ethernet Configuration yesIno no yes New Mode staticldhcp static New static IP Address 0 0 0 0 10 1 80 74 New Gateway Address 0 0 0 0 10 1 80 1 New Netmask 255 255 255 0 255 255 254 0 New Configuration Mode static IP IP 10 1 80 74 Gateway 10 1 80 1 Netmask 255 255 254 0 Accept New Configuration yesIno yes yes Accepted Updating configuration files Applying new Network configuration Figure 5 1 Ethernet port configuration sequence Note If you do not have a pre assigned static IP address but you do have DHCP services on your network you can enter dhcp as the Ethernet address mode To obtain the automatically assigned IP address monitor the service port output as the receiver boots
47. er over a PPP link You can also set up a streaming service such as Trimcom CMR RTK or RTCM RTK corrections on a serial port For a streaming service the modem must perform the auto answer function For more information see Dial up modem radio modem or terminal adapter page 45 NetRS GPS Receiver User Guide 33 4 Setting Up the Receiver Radio modems The most common data link for Real Time Kinematic RTK surveying is a radio You can connect the receiver to an external radio through one of the four serial ports whether or not the Ethernet port is in use Typically use one of the DE9 male ports on the rear panel The NetRS receiver supports the following Trimble base radios e TRIMMARKM 3 TRIMMARK Ie e PDL450 e TRIMTALK 4505 To use an external radio with the NetRS receiver you need an external power source for the radio Use the external radio s configuration program to configure the radio modem separately To configure the receiver for RTK operation you must do both of the following Enable the RTCM or CMR RTK corrections stream on the selected serial port Set the reference station coordinates and broadcast ID For more information see Chapter 5 Configuring the Receiver External frequency reference Use a BNC cable to connect to an external frequency reference The receiver directly supports a 10 MHz external frequency reference An external reference must provide the reference signal with an
48. erial port For more information see Setting Up a PPP Connection page 83 The NetRS ethernet port supports 10Base T full duplex and auto negotiation The system automatically configures to the highest interoperable performance mode Possible modes and configurations are as follows Ethernet port mode System configuration 1 10Base T full duplex NetRS receiver and End port devices support auto negotiation End port device is configured for full duplex 2 10Base T half duplex NetRS receiver and End port devices support auto negotiation End port device is configured for half duplex 3 10Base T half duplex The NetRS receiver supports auto negotiation End port device does not support auto negotiation or There is no ethernet port connected 36 NetRS GPS Receiver User Guide Configuring the Receiver 5 Note Do not configure a NetRS receiver in mode 3 where the End port device does not support auto negotiation but the receiver is configured for full duplex instead of half duplex If you do you may encounter Ethernet data overflows and system problems 1 To configure initial parameters for a hub or switch based connection use Port 1 on the receiver front panel 2 To complete the configuration access the web based configuration pages Configuring the Ethernet connection To configure a 10Base T connection you need the following e A terminal emulator on the host computer that you will use to co
49. estrictions By your acquisition or use of this Product you agree to comply with all applicable export and import laws and restrictions and regulations of the United States and foreign countries and shall not export re export import transfer or divert the Product in whole or in part i to any destination restricted or prohibited by U S export control laws or to any national or resident thereof ii to any denied or restricted individual or entity under such laws and regulations or iii without all necessary authorizations required by law NOTE 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 Notices Class B Statement Notice to Users This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC rules 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 installat
50. faults settings 21 LED Functions veros a a ss 22 LED startup Sequence o 22 NetRS GPS Receiver User Guide v Contents vi LED flash patt rdS iiem ak ee see an eee di he ety 25 Setting Up the Receiver 27 Setup Guidelines 2400 as ape a ee a i 28 Environmental conditions 2 000 28 Sources of electrical interference 28 Uninterruptible power supply o o oo 29 Lightning protection o o e o 29 Mounting the receiver 2 2 o o 30 Placing the antema o e e 30 Connecting the Receiver to Other Devices 31 E AN 31 Antennacabling e e 31 Met Tilt Sensors o e 32 Dial up modems and terminal adapters 33 Radiomodems 0 0000 2 eee eee 34 External frequency reference o o 34 Configuring the Receiver 35 Setting up Communications o e 36 Configuring the Ethernet connection 37 Configuring the Receiver Through a Web Browser 41 Web based men 0s sk a eee thar te eal eb 41 Configuring the Receiver for Connected Devices 45 Dial up modem radio modem or terminal adapter 45 Configuring Met Tilt sensors 2 47 Configuring the GPSBase or GPSNet software
51. hat is streaming the required information NetRS GPS Receiver User Guide Service e Query service Overview 2 No command is required opening the TCP port triggers data transmission A query service provides a single source for a specific information type and returns it without affecting other continuous streams Multiple clients can connect simultaneously to a single streaming or query port The NetRS receiver supports the following services Description Type PPP Point to Point Protocol This service is the Internet standard for transmitting IP packets over serial lines When you enable the serial port for PPP you can run the NetRS web configuration interface over the serial port Protocol Trimcom This service supports a subset of the standard Trimble Trimcom binary communications protocol Trimcom is used by Trimble software applications for configurable GPS data streaming and queries Protocol RT17 This service can be configured to provide various combinations of real time GPS measurements including phase pseudorange carrier to noise ratios and other general information about each satellite that is tracked RT17 is also the real time streamed GPS measurement information It includes the same information that is stored in Type 17 records in TOO and DAT files This is the basic information used to produce GPS positions and corrections Streaming BINEX The BINE
52. he root of the logging hierarchy under which you will find all directories with YYY YMM naming Note You can transfer only those files that end in TOO or BNX Any file opened for an active logging session will end in TOO A or BNX A Do not attempt to transfer those files NetRS GPS Receiver User Guide 61 6 Logging and Managing Data 62 NetRS GPS Receiver User Guide CHAPTER 1 Real Time Data and Services In this chapter m Streamed Data Services m Collecting Data as a Client NetRS GPS Receiver User Guide 63 7 64 Real Time Data and Services This chapter describes the streamed data services and how a client can collect real time GPS data Streamed Data Services The NetRS receiver supports five streamed data services RT17 Trimcom BINEX CMR CMR and RTCM RT17 An RT17 service provides GPS observations ephemerides and other information as defined for that service When a client connects to the service all data flow is from the receiver to the client An RT17 service can have any number of clients The client can be considered passive because it does not initiate the data stream and has no control over its content The client cannot request any further information through the TCP connection You can configure the receiver for one or more of the Ephemerides SV Flags and Almanacs services on different TCP ports To request updates to ephemeris and other information a client of an RT
53. ian calendar day HH The UTC hour when logging started mm The UTC minute when logging started S Any letter a z that you define as a session identifier Auto Delete If you select the Auto Delete check box the receiver automatically deletes the oldest logged files as required to make room for new files If you clear the Auto Delete check box the receiver stops logging data once the available file space is full This option affects all files You can also set up session pools to define a maximum amount of memory to be used by each session If auto delete is when the pool is full Enabled the oldest files are automatically overwritten Disabled the session stops logging data Each pool can have auto delete enabled or disabled NetRS GPS Receiver User Guide 57 6 Logging and Managing Data Managing Files Through the Web Interface Use the web browser interface to manage logged data files that have been recorded and are still stored on the NetRS CompactFlash card Storing files Data that has been logged by the NetRS receiver is stored and organized into files in a directory folder tree structure Select the Data Logging screen and then the Logged Data Files screen to view and manage these files Trimble Logged Data Files Logging Space 134 647 Miorre Trad 48 IES Mie An Directory pala UI shtator end 115 few Ne Dro D De D D Dis Do Do D Dos Dx The Logged Data Files screen displays
54. iles Sessions can run automatically using one of several scheduling modes NetRS GPS Receiver User Guide Logging and Managing Data 6 A session runs automatically only if you have enabled a session This allows you to define multiple sessions in the receiver with independent characteristics but run them only when required For a Manual session select the Enable check box to start or stop the session You can define one or more sessions then enable some all or none of them This allows you to define multiple modes of data logging in the receiver then enable any particular mode s as required Note Be sure to use a different session identifier for any session that will create files with the same start time as another session More than one session can be active at the same time The receiver records a separate data stream for each session While there is no limit on the number of sessions you can create you can have only eight sessions actively logging at any one time If you define more than eight sessions you can enable up to eight but you must disable all others The following table describes the available schedules Schedule Description Manual Manually controlled start and stop time Once Only Single session with a starting date time and duration Creates a single file Daily Repetitive session with a fixed time and duration every day Creates a fixed duration file each day Continuous Once sta
55. in 3 nsec of error in the 1PPS pulse e Antenna cable length Each meter of cable adds a delay of about 5 nsec to satellite signals and a corresponding delay in the 1PPS pulse 76 NetRS GPS Receiver User Guide Other System Information 8 Deployment Issues This section discusses issues related to deploying and operating a network of receivers on a continuous basis Most of these issues relate to networks of any size but some relate specifically to deploying large networks of tens or hundreds of receivers Planning The NetRS receiver supports named configuration files that can be obtained from any given receiver and cloned to another receiver Therefore when you plan a network configuration you should identify which elements are common to all the receivers in the network and which elements are unique to individual receivers You can store any combination of the following parameters in a configuration file and then restore them to the same receiver or to a different one e T O configurations including serial TCP UDP and REP port specifications e Reference station setup e Antenna setup e Data logging sessions including all defined sessions the AutoDelete function and the power saving controls e Miscellaneous receiver controls including masks clock steering multipath 1PPS output GPS satellite controls and WAAS controls e External frequency source Ethernet setup controls e FTP access controls e Netwo
56. interruptible power supply using a PPP connection 89 V vibration features 71 W WAAS EGNOS 70 wakeup alarm 19 web browser 72 web based menu 41 website 1 Y your comments 2 NetRS GPS Receiver User Guide 105 Index 106 NetRS GPS Receiver User Guide
57. ion If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and the receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Changes and modifications not expressly approved by the manufacturer or registrant of this equipment can void your authority to operate this equipment under Federal Communications Commission rules Regulations and Safety STATEMENT ACCORDING FCC PART 15 19 This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation STATEMENT ACCORDING FCC PART 15 21 Modifications not expressly approved by Trimble could void the user s authority to operate the equipment CE Declaration of Conformity This product conforms to the following standards and therefore complies with the requirements of the R amp TTE Directive 1999 5 EC which specifies compliance with the essential requirements of EMC D
58. irective 89 336 EEC and Low Voltage Directive 73 23 EEC EMC Emissions BSEN 55022 1998 W A1 00 Class B EMC Immunity EN 55024 1998 Safety EN 60950 2000 Mark First Applied 03 The technical file is maintained at Trimble Navigation Limited 645 North Mary Avenue Post Office Box 3642 Sunnyvale CA 94088 3642 USA NetRS GPS Receiver User Guide NetRS GPS Receiver User Guide Contents 1 Introduction A arth te uals ke hes A ia 1 About the NetRS c c ea ee ee ee ee 1 Related Information 0 02 0000 ee ee eee 2 Technical Assistante o e 2 Your Comment aci a io does 2 2 OVERVIEW sebr os dr e ee E AR A A 3 The Network Appliance Concept o o e 5 NetRS Services co so kat a a wh bee Awe hs 6 Usand Carei 3 coo be eho ee dde le amp alate 9 Electronic Interference 2 2 scarce a ea bP ape Bee Bw eS 9 Security Threat COCOM Limits 0200 9 3 Features and FunctionS lt lt lt lt lt 11 Features of the Receiver o ee 12 Front panel e ote a de 13 Re rpanel cosa eii e a a a e od 14 Power ports iag ss d i ds Dad e o a Sa we GL 17 Button FUNCUOAS tn A he Se ar Belo Be ke 18 Power button operations o e e e 18 Power saving mode e 19 Other power operations o e e e 20 To erase the almanac and the ephemeris 21 To reset the receiver to factory de
59. le or disable internal logging modes through a single control You can pre define streamed data services for a number of configurations For example you can provide services at different data rates Once the data stream is defined a client can select a service on a different port to effectively change the mode of real time streamed data collection Changing the Configuration To reliably change the configuration of one or more receivers Trimble recommends that you use configuration files You can verify a configuration change in a laboratory setting then propagate it into the network where required For example to automate security settings to periodically change passwords manually enter a change for a remote system on a local receiver then transmit it to all remote receivers If passwords are unique to each receiver you can automatically create separate partial configurations for multiple receivers through a single receiver at the network operations center You can then automatically transfer and apply the unique change to each receiver To verify the configuration of network receivers create a configuration file on each receiver and then transfer it to the network operations center Compare the latest configuration file with the previously transferred configuration file for that receiver This way you can monitor a remote receiver for any inadvertent changes NetRS GPS Receiver User Guide 79 8 Other System Information NetR
60. led NetRS GPS Receiver User Guide 19 3 20 Features and Functions Specify the duration of the wakeup alarm and the interval between alarms from a range of values The wakeup times are always synchronized to the beginning of the UTC day For example if you specify an 8 hour interval then a periodic wakeup alarm will occur every day at 00 00 UTC 08 00 UTC and 16 00 UTC Caution If you turn off the Failsafe wakeup alarm you may not be able to communicate with a remote receiver Note If you press Power while the power saving mode is enabled and the receiver is in Sleep mode the receiver temporarily turns on If there is no session pending the receiver continues to operate for five minutes then automatically shuts down If you visit the NetRS home page for the first time during such a hold off period a dialog appears to warn that the receiver is scheduled to shut down after the hold off time If you press Power while the power saving mode is enabled and the receiver is on power saving mode is disabled and the receiver turns of Other power operations e Ifyou disconnect all power sources the receiver shuts down It automatically turns on again when you reconnect a power source of 12 V or more The receiver may take longer to boot up when power is restored after a sudden power loss e The receiver turns on only if at least one of the power supplies supplies 12 V or more power However when the recei
61. ming format that guarantees unique file names for subsequent firmware release packages Do not change this file name Uploading the firmware 1 4 From the NetRS main menu select Firmware Upload A screen appears Click Browse A dialog appears Find the RPM file that you downloaded to your system from the Trimble website Select the RPM file and then click Upload The full RPM file is approximately 12 MB in size It may take more than 30 minutes to transfer across a slow link such as a PPP link over a modem connection From time to time smaller releases will be available The system displays a dialog once the file is successfully transferred If the transfer fails an error message appears Installing the firmware upgrade 1 Click Install next to the firmware description Alternatively click Install next to each firmware file line item at the top of the page 50 NetRS GPS Receiver User Guide Configuring the Receiver 5 In the confirmation pop up that appears click OK to begin While the upgrade is in progress the screen is not available The web browser may display an error dialog to advise that the web server is unavailable Wait five minutes Note To monitor the upgrade operation connect to the front panel service port at 115200 8 N 1 using a terminal emulator such as Hyperterminal The receiver reboots and installs the new firmware Once the receiver reboots again the upgraded firmware
62. mount Enabled Enabled 0 7 Disabled Positive Using Internal Source External source NOT detected Disabled None IgnoreHealth None Disabled Enabled satellites EGNOS AOR E prn121 WAAS AOR W prn123 prn124 prn125 prn126 prn127 prn128 MSAS 1 prn130 EGNOS IOR prn132 prn133 WAAS POR prn135 prn136 MSAS 2 prn138 RTCM Identifier O CMR Identifier O Name CREF0001 Description Position Lat 00 00 00 0000 N Lon 000 00 00 0000 Height 0 000 meters X 6378137 000 m E Y 0 000 m Z 0 000 m 68 NetRS GPS Receiver User Guide Other System Information 8 Setting Default value Data logging AutoDelete Enabled Power Saving Mode Disabled Enabled Sessions None Shutdown threshold voltage 10 68 V NetRS GPS Receiver User Guide 69 8 Other System Information Specifications The following table shows the specifications for the NetRS GPS receiver Feature Specification System Advanced Maxwell 5 custom chip R track technology for L2C signal tracking capability High precision multiple correlator for L1 and L2 pseudo range measurements Unfiltered unsmoothed pseudorange measurements data for low noise and low multipath error EVEREST multipath rejection option to enable or disable Very low noise L1 and L2 carrier phase measurements 12 channels L1 C A code and carrier phase 12 channels L1 L2 P2 derived under encryption and full cycle carrier phase 1 channel WAAS
63. n see Chapter 6 Logging and Managing Data NetRS GPS Receiver User Guide 41 5 Configuring the Receiver Table 5 1 Web based menu options continued Main menu Use the sub menu screens to option Receiver Access global receiver controls including antenna settings clock steering Configuration Multipath control masks and 1 PPS Enable the external reference Manage and apply receiver configuration files Copy a configuration from one receiver to another Restore the configuration of a receiver Configure a voltage threshold for automated receiver shutdown in case of low battery power Clear all GPS almanac or ephemeris information Reset restart the receiver 42 NetRS GPS Receiver User Guide Configuring the Receiver 5 Table 5 1 Web based menu options continued Main menu Use the sub menu screens to option Internet Configure the Ethernet connection Configure the MTU value to limit the maximum packet size sent over the network by the NetRS receiver Where network communications are slow or there is significant data loss it may be better to decrease this value Enable Disable the HTTP and or HTTPS ports Select alternative HTTP HTTPS ports HTTPS sends encrypted data from the browser client to the receiver which makes HTTPS more secure than HTTP especially if the receiver is not installed behind a network firewall Setup IP filtering to allow access only from specified IP addresses Limit
64. n contains pinout information for the NetRS receiver communication ports connectors and cables You can use this information to prepare special cables for connecting the NetRS receiver to a device or instrument that is not supported by a standard or optional cable Ports e Port 1 Service is on the front panel Ports 2 3 and 4 are on the rear panel e The combined Power Ethernet port is on the rear panel NetRS GPS Receiver User Guide 73 8 Other System Information Cables and connectors The following table describes the cables and connectors that are provided with the NetRS receiver Cable or connector Part number Description Primary power Ethernet 48164 DA26 to RJ45 and DC Jack Ethernet cable 50150 00 2 m 10BASET CAT5 Secondary power 48600 2 pin Conxall to bare wires 1PPS 11517 BNC M to BNC M Serial cable 19309 00 2 m DE9 M to DE9 F Port pinouts The following table describes the communication port pinouts Port 1 Port 2 Port 3 Port 4 Primary power Ethernet F DE9 M DE9 F DE9 M DE9 M DA26 2 TX O 1 DCD I 1 DCD O 1 DCD 6 GND 3 RX I 2 RX 1 2 TX O 2 RX l 7 unused 5 GND 3 TX 0 3 RX l 3 TX 0 8 unused 4 DTR O 4 DSR l 4 DTR O 10 ET_GND O RJ45 Pin 4 5 GND 5 GND 5 GND 12 TX O 6 DSR I 6 DTR O 6 DSR I 13 ET_GND O RJ45 Pin 5 7 RTS O 7 CTS I 7 RTS O 14 ET_GND O RJ45 Pin
65. nd spikes and keeps the receiver running during short power outages For more information contact your local Trimble dealer Lightning protection Trimble recommends that you install lightning protection equipment at permanent sites Equipment should include a gas capsule lightning protector in the antenna feed line and appropriate safety grounding A static dissipater near the antenna can reduce the likelihood of a direct lightning strike You should also protect any communications and power lines at building entry points If you use other antennas or aerials such as a radio modem that distributes real time correction messages consider protecting those antennas as well To be compatible with the receiver voltage output the antennas should allow 8 V DC to pass through For more information contact your local Trimble dealer or go to the following websites e http www hubersuhner com e http www polyphaser com NetRS GPS Receiver User Guide 29 4 Setting Up the Receiver Mounting the receiver Figure 4 1 shows the layout and dimensions of the mounting holes on the base of the receiver When you mount the receiver on a vertical surface use four 10 or M5 threaded fasteners Thread the fasteners into a solid surface such as half inch plywood or an equivalent solid structure Make sure the fasteners are tightly inserted 205 8 mm 8 1 inches A Y 12 7 mm 76 2 mm 0 5 inche
66. nfigure the receiver e One of the following A Static IP address default gateway and netmask for a static configuration If you use a crossover cable for the connection then you can use any address that does not conflict with the IP address and default gateway address of the connected host A DHCP server on the network A 10Base T network connection and a CATS cable Connect through a port on a network hub or switch that is also connected to the host computer that you will use to configure the receiver Alternatively use a crossover cable to connect directly to the host computer NetRS GPS Receiver User Guide 37 5 Configuring the Receiver To define a static IP address for the device or to obtain network assigned DHCP parameters 1 Use a standard RS 232 cable to connect a computer host to the receiver service port Configure a terminal emulator program for example Hyperterminal for the Windows operating system for a 115 200 baud 8 N 1 connection with no hardware flow control If you use Hyperterminal a Click Disconnect b To set the parameters select File Configure and then click Configure c Change the communication values and then click Connect A Tip You may also want to enable the terminal emulator to capture text for future review 3 Connect or supply power to the receiver If the receiver is already turned on turn it off and then on again As the receiver starts it
67. onitoring 78 GPSBase 48 GPSNet 48 H Hyperterminal 38 initialization string external sensor 47 Index input features 72 internal data logging 72 Internet Protocol IP 4 Internet connecting to 36 L L1 and L2 70 LED behavior 22 flash patterns 25 startup sequence 22 levels of security 4 lightning protection 29 logging data options 54 logging LED 23 managing files through the web interface 58 memory 71 Met sensor command 47 meteorological data 47 Met Tilt sensors 8 47 72 modem 45 monitoring GPS performance 78 system activity 78 mounting the antenna 30 multi port adaptor 16 N N connector 16 NetRS services 6 network appliance 5 network configuration planning 77 network management features 4 NetRS GPS Receiver User Guide 103 Index O operating temperature 28 71 output features 72 P performance limitations 9 performing basic receiver functions 12 physical features of the receiver 12 pinout information 73 planning a network configuration 77 port pinout information 74 ports 1 PPS output 16 BNC 16 communication 71 conxall connector 16 DE9 F 16 DE9 M 16 Ethernet 16 external frequency input 16 secondary power 16 positioning features 71 power battery 16 consumption 71 management LED 24 ports primary and secondary 71 saving 19 PPP connection configuring 36 deleting 90 editing properties 90 using 89 PPP service 7 PPP session closing 89 re connecting 90 PPP with the Linux
68. port uses a 3 wire connection with default parameters of 115 200 baud 8 NONE 1 Linux diagnostics are available through this port during the boot and shutdown processes Power button Controls the receiver power states NetRS GPS Receiver User Guide 13 3 Features and Functions LED indicator shows External frequency external oscillator activity Ethernet Ethernet port activity Satellites satellite tracking status Logging logging status to the internal memory Primary power power status on the primary power port Secondary power power status on the secondary power port Rear panel Figure 3 3 shows the rear panel features Serial ports can support RT 17 and BINEX data formats to stream real time GPS observables and CMR and RTCM data formats to stream RTK differential corrections Each port can also act as a PPP server for IP communications over a serial link All supported configuration streaming file transfer and firmware update capabilities are supported over the Ethernet port or any serial port supporting IP communications using PPP 14 NetRS GPS Receiver User Guide Features and Functions 3 Multi port adapter Primary power Ethernet DA26 M Antenna N 1PPS output BNC Port 3 DEQ F External Port 2 DE9 M Port 4 DE9 M Secondary BNG power Conxall Figure 3 3 Rear panel features Figure 3 4 shows the multi port adapter in detail Power IT connection 3
69. receiver to operate with different types of external devices Dial up modem radio modem or terminal adapter You can use a dial up modem a radio modem or a terminal adapter TA to support PPP access to full receiver services or access to a fixed raw data stream such as RT17 GPS data or RTK corrections Typically you would connect a modem or TA to a DE9 male port on the rear panel Note The front panel DE9 female port provides only a 3 wire connection so flow control is not available through this port Make sure that you identify the configuration settings required for the external device These include the DCE baud rate and hardware flow control Consider the following issues when you define modem or TA configuration strings e A radio modem must be fully pre configured e Ifthe modem or TA is to be used for a PPP connection you can preconfigure the modem or you can enter the setup strings in the configuration page See Configuring a modem or terminal adapter page 46 e To configure the modem to Auto answer mode you can do one of the following Select Direct connection type Select Modem connection type to allow the receiver to manage auto answer See Step 6 below e Ifyou are using a modem or a TA for RT17 data or RTK correction streaming then you must do all of the following Fully configure the modem before you connect it to the receiver NetRS GPS Receiver User Guide 45 5 Configuring the R
70. rial port of the Linux machine to the NetRS serial port Run the following command where ttyS0 is the serial port of the Linux system usr sbin pppd ttySO 115200 detach The Linux system responds with the following messages Using interface ppp0 Connect ppp0 lt gt dev ttySO Deflate 15 compression enabled local IP address xxx xXxX XXX XXX remote IP address XXxx XXX XXX XXX The PPP connection is now established To verify the connection ping the remote IP address To use this connection with a web browser configure the browser so that it does not use a proxy server before connecting to the receiver NetRS GPS Receiver User Guide 83 8 Other System Information Windows Operating System Note When you use PPP with the Windows operating system you must create a connection then configure it To use PPP with the NetRS receiver as the server and the Windows operating system as the client do one of the following To connect through ports 1 and 3 use a DCE adapter to assert the CD signal Make sure that the adapter is wired as shown in Figure 8 2 NetRS receiver Office computer connection connection gt Figure 8 2 DCE adapter wiring For a direct cable link connect through ports 2 and 4 using a null modem adapter Make sure that the adapter is wired as shown in Cables and Connectors page 73 If the connection times out while you are making the PPP link verify that the null modem is correctly wired
71. rk Time Protocol NTP NetRS GPS Receiver User Guide 77 8 Other System Information e Security setup including access controls and HTTP accounts Configuring from Factory Defaults In general you will initially configure the receiver manually However for a large network deployment you could automatically configure the receiver from its factory defaults To do this choose one of the following approaches e Create an application that works with the service port and 10Base T port to perform the initial IP address configuration The application then configures the receiver using HTTP e Create an application that works through a PPP connection on a serial port to perform all configuration Automated configuration can be carried out entirely through the HTTP link To view the status of the receiver after it has been configured save and then transfer a configuration file To view a summary of global settings select the Receiver Configuration screen and then select the Summary screen Monitoring Operation To monitor GPS performance you can e automatically retrieve standard GPS status information such as SV tracking e analyze real time data streams To monitor system activity you can e retrieve the real time status of all logging and active streams on a receiver 78 NetRS GPS Receiver User Guide Other System Information 8 Changing Modes You can pre configure and enable operational modes as necessary and enab
72. rols 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 e Create multiple continuous logging session configurations and then enable them only when required These features and many more shift the model of a GPS receiver toward the concept of a network appliance The Network Appliance Concept Traditionally a GPS receiver has one user operator That person can change settings without affecting other users With the NetRS receiver an operator can configure the receiver once then make the receiver available as a network appliance for use by one or more other users clients An operator can set up the receiver to provide one or more services that are accessible to one or more clients through the Internet Once the receiver is deployed the client need make only minimal changes if any to the receiver configuration When the receiver operates as a network appliance it provides services to all clients who are attached to the receiver through the network Different streamed services can be configured on different ports For example the service configuration on one port can have different data rates or smoothing configurations from the service configuration on another port To obtain a service the client has only to connect to a specific port In this way most clients do not need to control the NetRS G
73. rred from the receiver to the GPS processing software on an office computer where it is then used to predict the best time to collect GPS data The orbit information is a subset of the ephemeris data with reduced precision See also ephemeris antenna height The height of a GPS APC above the point being observed The uncorrected antenna height is measured from the observed point to a designated point on the antenna then corrected to the true vertical manually or automatically in the software antenna phase Also called APC The electronic center of the antenna center The APC often does not correspond to the physical center of the antenna The radio signal is measured at the APC ASCII American Standard Code for Information Interchange An eight bit code for character representation seven bits plus parity used for serial communication NetRS GPS Receiver User Guide 93 Glossary base station baud bits per second BNC Bayonet Neill Concelman C A code carrier carrier frequency carrier phase CMR Compact Measurement Record Also called reference station A receiver and antenna that is set up at a known location specifically to collect data for differentially correcting rover files The base station calculates the error for each satellite and through differential correction improves the accuracy of GPS positions collected at unknown locations by a roving GPS receiver A unit of speed used to describ
74. rs s o oo o e 74 Port Pino ts ua RA e A 74 TPPS Outputy Llica o tds oes Wa ded 76 1PPS Pulse Definition lt lt o eee ees 76 NetRS GPS Receiver User Guide vii Contents Deployment Issues 2 0 0 0 00002 e TTI Plannin S sy io re AAR E E ados J TT Configuring from Factory Defaults 78 Monitoring Operation e a 78 Changing Modes e 79 Changing the Configuration 00 79 NetRS Support Software o o o 80 Data Conversion oi a a a ee we 80 TOO to DAT file conversion o o 80 RT17 to DAT file conversion o o 81 DAT to RINEX file conversion 4 81 Setting Up a PPP Connection o o oo 83 Linux Operating SysteM o e e e 83 Windows Operating System o o 84 Creating a PPP connection o oo 85 Configuring a PPP connection 86 Using the PPP connection o a 89 Closing the PPP session o o 89 Re connecting the PPP session 90 Editing PPP connection properties 90 Deleting a PPP connection o o 90 Glossary i na AA ae a A 93 Us AE A 101 viii NetRS GPS Receiver User Guide CHAPTER Introduction Welcome to the NetRS GPS Receiver User Guide This manual describes how to set up and use the
75. rt correctly Note On startup LEDs flash from 20 seconds to 4 minutes depending on the cause of the previous shutdown Receiver shutdown due to a sudden loss of power will force a data file system integrity NetRS GPS Receiver User Guide Features and Functions 3 check the next time the receiver is turned on The time required to perform the file system check will increase with the number of data files stored in receiver memory The LEDs operate as follows External frequency orange LED state Description On External frequency source is being used Flashing slowly External oscillator is being used Off No external frequency source Ethernet green LED state Description On Ethernet port is on Flashing quickly Ethernet traffic is being received Off Ethernet port is off or disconnected Satellite amber LED state Description Flashing slowly Tracking four or more satellites Flashing quickly Tracking fewer than four satellites Off Not tracking satellites NetRS GPS Receiver User Guide 23 3 Features and Functions Logging yellow Note Normal operation for the NetRS receiver is continuous logging There is no LED state to indicate the memory capacity LED state Description Flashing slowly Logging data to the internal CompactFlash card Off Not logging data Power management green and amber Green Power LED De
76. rted this session runs continuously 24 hours a Logging day Creates multiple files of the specified durations Continuous logging is the most common mode used for CORS operation NetRS GPS Receiver User Guide 55 6 Logging and Managing Data Creating or editing a session 1 From the NetRS main menu select Data Logging 2 Inthe Data Logging Status screen select Create a New Session or Edit Sessions 3 Configure the new session or change an existing session as required Enabling a session To enable a session select the Data Logging screen then the Status scree and then select the Enable check box Disabling a session To disable a session clear the Enable check box Data Format The TOO data format provides control over position and measurement logging rates and whether Code or Carrier phase smoothing is enabled The receiver can also log data in the UNAVCO BINEX format For more information go to http binex unavco org You can enable carrier phase smoothing for BINEX files Naming Files Filenames are generated in the form StationIDY Y Y YMMDDHHmmsS ext For example TNCO_NetRs200306052041b t00 56 NetRS GPS Receiver User Guide Logging and Managing Data 6 The elements in the filename are as follows Element Description StationID The system name as defined by the GPS network administrator YYYY The Julian calendar year MM The Julian calendar month DD The Jul
77. s 3 inches Y I I I I El i Back gt 6 7 mm 0 3 inches Figure 4 1 Receiver mounting holes Placing the antenna Before you mount the antenna for your reference station you should plan the best location for the antenna and how you will obtain accurate coordinates for that position 30 NetRS GPS Receiver User Guide Setting Up the Receiver 4 Figure 4 2 shows a suitable place for an antenna Trimble recommends a site as free as possible from interference where the antenna has a clear view of the sky and where there are no obstructions above 10 elevation Figure 4 2 Antenna placement If there are obstructions above 10 or large metallic objects nearby the rover receiver may collect data from satellites that the reference station cannot track This data cannot be used in rover DGPS or RTK solutions Connecting the Receiver to Other Devices This section describes how to connect the NetRS receiver to external devices Antenna The receiver provides an N type female connector for connecting to an antenna The receiver is intended for use with a Zephyr Geodetic or Choke Ring antenna However you can use it with any Trimble geodetic 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 NetRS GPS Receiver User Guide 31 4 32 Setting Up th
78. scription On Power source is healthy 12 V or more The unit will always power on Flashing quickly Power source is low 11 V 12 V The unit will continue to operate but will not wake up if in sleep mode Off No power source Amber Power LED Description On Power source is healthy but is not in use Flashing quickly Power source is low but is not in use Off No power source 24 NetRS GPS Receiver User Guide LED flash patterns Features and Functions 3 Table 3 2 summarizes the LED flash patterns Table 3 2 LED flash patterns Mode External Ethernet Satellite Logging Power1 Power 2 Frequency green amber yellow green green orange amber amber Receiver off Off Off Off Off Off Off no power Receiver in Monitor On On On On On On mode Receiver in Sleep Off Off Off Blinking Off Off mode Receiver on primary N A N A Flashing Flashing Greenon Amber on Secondary power slowly slowly healthy Logging data Ethernet port on Off On Flashing N A Off Green on Receiving traffic Flashes slowly Tracking satellites with Power on Port 2 only traffic Primary power source N A N A N A N A Greenon Amber on flashing Secondary power quickly supply low Primary power source N A N A N A N A Green Amber on low flashing Secondary power quickly source available Tracking four or more N A N A Flashing N A N A N A satellites slowly External frequency in Flashing
79. survey session The string may include calibration parameters to configure the external sensor In most cases only device query operations are performed and an initialization string is unnecessary e Query The receiver sends a query string at a predefined interval for each device to request a new measurement Each time the receiver sends a query string the system assigns a GPS time tag and logs the measurement You can configure this service to send one or more initialization and repeat strings up to a total of six strings on a regular basis to obtain measurements from external sensors These sensors include those used to collect meteorological data and or deformation data where the tilt of the sensor is measured The time tag query string and the response from the sensor s are then stored in all Trimble TOO or BINEX files that are being logged in the receiver and are also sent out through any ports that are configured for streaming RT17 or BINEX GPS measurements Configuring the receiver to use an external sensor 1 Select the V O Configuration then the Port Configuration screen and then select the Met Tilt check box 2 Inthe Parameters for Met Tilt group specify the command to send You do not need to include a carriage return or new line character For example a typical Met sensor command appears as 0100P9 NetRS GPS Receiver User Guide 47 5 Configuring the Receiver From the Schedule drop down list select
80. t the Use t ik IP header compression denia check box is selected Click OK 6 Click OK in the other dialogs that appear Using the PPP connection Once you have successfully configured the connection the Connecting dialog appears to show that the system is dialing verifying your username and password and authenticating the connection Once the system is connected the dialog disappears and the dial up networking icon appears in the system tray To view the current connection status double click the icon In the dialog that appears click the Details tab to view the Server NetRS receiver and Client computer IP addresses With the Server IP address you can access the receiver using standard network tools like Ping SSH and the Web browser For example if the Server IP address 1s 192 168 143 1 start the Web browser then enter 192 168 143 1 in the URL field Closing the PPP session 1 Double click the dial up networking icon 2 Click Disconnect NetRS GPS Receiver User Guide 89 8 Other System Information Re connecting the PPP session 1 2 Click Start Settings Network and Dial up Connections Select the connection that you previously created in Creating a PPP connection page 85 Note The Password dialog does not appear The Connecting dialog appears then closes when the connection is established Editing PPP connection properties 1 2 Select Start Settings Control Panel To e
81. the interval at which to send the command Select Once to send the command once at the start of every data logging session If you specify query commands that occur at the same time a delay of 10 seconds is added to each subsequent command to avoid possible conflict when sensors are connected serially Configuring the GPSBase or GPSNet software You can configure the GPSBase or GPSNet software using a Trimcom or an RT17 service Trimble recommends that you use Trimcom to obtain full bidirectional communications with GPSNet in preference to streamed RT17 Trimcom Use only a TCP port through an Ethernet or a PPP link For dial up access you must configure a PPP dial up link as described in Configuring a modem or terminal adapter page 46 RT17 Use a serial port or a TCP port A default Trimcom service is defined on port 5018 The default RT17 service is at 5017 To change this configuration 1 2 3 From the I O Configuration screen select Edit Port Setups From the drop down list select TCP Port 5018 Click Delete To restore the service with a different port value select Create New TCP Port from the I O Configuration screen Note There may be only one Trimcom service running Configure the parameters as required 48 NetRS GPS Receiver User Guide Configuring the Receiver 5 RTCM or CMR corrections RTK corrections can stream to a serial port or through a TCP IP port Before you create the servic
82. tions 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 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 of the Product TRIMBLE IS NOT RESPONSIBLE FOR THE OPERATION OR FAILURE OF OPERATION OF GPS SATELLITES OR THE AVAILABILITY OF GPS SATELLITE SIGNALS THE FOREGOING LIMITED WARRANTY TERMS STATE TRIMBLE S 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 INVOLVED IN ITS CREATION
83. ton which is on the front panel The function of this button is to turn the receiver on press the button once and off press and hold the button for two seconds If you turn the receiver off using the Power button the receiver will stay off regardless of any alarm settings you may have made To turn the receiver on again you must use the Power button or remove and then reapply power to the receiver Power button operations When the receiver is switched on and operating press the Power button for at least 2 seconds but not more than 10 seconds to switch the receiver off All LEDs except the Ethernet LED turn off briefly when the receiver accepts the button press When the receiver is off press the Power button once to turn the receiver on The NetRS receiver requires time to start up and shut down It can take from 75 seconds to 4 minutes to fully start up the Linux operating system depending on the previous shut down conditions To turn off the receiver press and hold the power button for two seconds The shut down process normally takes between 20 seconds and 1 minute During these operations all the LEDs flash Once you have pressed the Power button wait for the operation to complete before you press the button again NetRS GPS Receiver User Guide Features and Functions 3 Power saving mode Use the power saving mode to set options that control whether the receiver remains on continuously or goes to sleep betw
84. u need to collect meteorological and tilt sensor data you can connect both devices to one RS 232 serial port To do this use custom cabling where the transmit data TXD RS 232 line from one sensor is connected to the receive data RXD RS 232 line of the next sensor The receiver sends a command to the first device in the chain Each device responds to a specific address If the command is addressed to the device the device sends a measurement response to the next device in the chain If the command is not addressed to that device the command is transmitted without modification and the next device may process it The receiver receives and logs the response from the last device in the chain For more information see Configuring Met Tilt sensors page 47 Dial up modems and terminal adapters The NetRS receiver provides auto answer support for a dial up modem or a terminal adapter connection as a PPP server You can configure the modem or the receiver can program the AT setup strings The receiver can also make automated dial out connections to an Internet service provider using PPP dial out Note This option only supports a 24 7 continuous connection for streaming connections For more information refer to the Help For full control a modem must be connected to one of the serial ports on the rear panel Typically this would be port 2 or port 4 which provide connectors for a DCE device You can access and control the receiv
85. ver is on battery power you can turn it off or put it into Sleep mode if the voltage is more than 11 V e When you use a standard AC power supply or a battery that is providing at least 12 V that is charged to at least 40 50 of capacity the Power button will always function as an on off switch to boot up or shut down the receiver NetRS GPS Receiver User Guide Features and Functions 3 To erase the almanac and the ephemeris You can erase the almanac and the ephemeris when they are out of date 1 Press and hold down the Power button for 15 seconds The External Frequency LED turns on 2 Once you release the Power button the almanac and ephemeris are erased To reset the receiver to factory defaults settings J Caution The reset operation can take 5 to 10 minutes Wait until the receiver has returned to normal operation before you press the Power button or disconnect receiver power With the antenna connected wait until the Satellite tracking LED blinks to indicate normal tracking Alternatively connect an office computer to the service port and wait until the diagnostics output displays Switching to runlevel 5 The default IP addressing mode is DHCP If the receiver is configured with a static IP address resetting to factory defaults may cause the receiver IP address to change and result in loss of communications with the receiver over the Ethernet link 1 With the receiver switched on press and hold the Power
86. will be operational Normal LED function resumes After several minutes the screen times out Click Reconnect NetRS GPS Receiver User Guide 51 5 Configuring the Receiver 52 NetRS GPS Receiver User Guide CHAPTER Logging and Managing Data In this chapter Data Logging Sessions Data Format Naming Files Managing Files Through the Web Interface Managing Files Using FTP NetRS GPS Receiver User Guide 53 6 54 Logging and Managing Data Use the NetRS receiver to log data to the internal CompactFlash card You can then access the data directly from the receiver or publish it on a company intranet or on the Internet The CompactFlash card has the following approximate storage capacity for logged data files e 150 MB 256 MB card 900 MB 1 GB card The following table shows in days the amount of data that you can store Card Interval 6 SVs 8SVs 10Svs seconds 0 1 2 1 1 1 0 19 14 12 256 MB 5 0 74 57 46 15 0 173 136 112 30 0 291 237 200 0 1 12 6 6 1 0 114 84 82 1 GB 5 0 444 342 276 15 0 1038 816 672 30 0 1746 1422 1200 Data Logging Sessions A data logging session is the process that creates a data file To log information to a data file you must first create a session then enable the session You can create multiple session definitions for different purposes These sessions can simultaneously log different types of data on different schedules into separate f
87. y with the Trimble AC to DC power supply P N 48800 00 e Secondary connects to the 2 pin Conxall connector through the DC power cable with polarity indications P N 48600 Intended for battery backup using a nominal 12 6 V lead acid battery system with any type of charging configuration Trimble recommends that you use a minimum 20 Amp hour lead acid battery in backup power configurations A 20 Amp hour battery will provide over 60 hours of backup power or about 30 hours with 50 derating if the receiver and antenna are the only powered devices If you use an external low voltage disconnect LVD set the NetRS receiver shutdown voltage so that the LVD does not switch off while the receiver is powering down Do one of the following e Set the shutdown voltage to at least 0 3 V above the LVD disconnect voltage Trimble recommends this setting to enable the receiver to shut down normally e Set the shutdown voltage to at least 0 3 V below the LVD disconnect voltage A large capacity battery will provide longer backup time Trimble does not recommend that you use a small capacity battery Any battery charging system must match the selected battery size N Caution Do not exceed the power supply voltage specification Use only AC power supply P N 48800 00 with the NetRS receiver NetRS GPS Receiver User Guide 17 3 18 Features and Functions Button Functions The NetRS receiver has only one button the Power but

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