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Troubleshooting

Receiver Problems

73

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The measuring is conducted near obstructions (tree canopy, tall buildings, etc.).

• Check that the Multipath Reduction boxes have been enabled.

• Connect your receiver and a computer and start TriVU. See “Connecting the Receiver

and a Computer” on page 25.

• Click Configuration

Advanced and the Multipath Reduction tab. Enable the two boxes

and click Apply.

• Move to an area free of obstructions, if applicable. 

The receiver cannot obtain Code Differential and/or RTK solutions.



Incorrect Base coordinates entered

• Specify the correct coordinates for the Base station using TriVU or another suitable field

data collection software. 



The receiver is not configured as a Base or Rover.

• If the receiver should function as a Base, ensure it has the proper configuration. See

Chapter 3 for details.

• If the receiver should function as a Rover, ensure it has the proper configuration. See

Chapter 3 for details.



The corresponding receiver options may be disabled or expired.

• See “Managing Receiver Options” on page 60 for details on how to check current options.

• Order a new OAF with the desired options activated to enable or extend validity of the

corresponding receiver options. Contact your dealer or visit the JAVAD GNSS website for
details.

• Refer to the TriVU Software Manual for a detailed description of options.



There are not enough common satellites. In order to obtain a fixed solution, the Base and Rover
should track at least five common satellites.

• Ensure that both the Rover and Base receivers use the same, and updated, almanac. See

“Collecting Almanacs and Ephemerides” on page 28.

• Check the elevation masks of the Rover and Base receivers; they should be the same. See

“TriPad Configuration” on page 43 for information on setting the elevation mask.



A discrepancy exists between the differential standards used at the Base and Rover receivers.
Ensure the Base and Rover receivers use the same corrections input/output format:

1. Connect your receiver and a computer and start TriVU. See “Connecting the Receiver and

a Computer” on page 25.

2. Click and the Ports tab. Use the same input/output format for both receivers.



Poor satellite geometry (PDOP/GDOP values are too high).

• Conduct your measuring when PDOP values are low.

Summary of Contents for DELTAGNSS Receiver

Page 1: ...erved The information contained herein may not be used accessed copied stored displayed sold modified published or distributed or otherwise reproduced without express written consent from JAVAD GNSS D...

Page 2: ...www javad com...

Page 3: ...Absolute Positions 17 1 1 3 Calculating Differential Positions 17 1 1 4 Essential Components for Quality Measuring 18 1 2 Getting Acquainted 19 1 2 1 DELTA Receiver 19 TriPad 19 Data and Power Ports...

Page 4: ...Angle messages 42 3 3 TriPad Configuration 43 Chapter 4 Setup and Measuring 49 4 1 Receiver Setup 49 4 1 1 External Antenna Setup 49 4 1 2 Measure Antenna Height 50 4 2 TriPad Operation 51 4 3 Static...

Page 5: ...Receiver Specifications 77 A 1 1 General Details 77 A 1 2 GNSS Board Details 81 A 2 Connector Specifications 82 Power Connector 82 Serial RS 232C Connector 83 USB Connector 84 Ethernet Connector 85 RS...

Page 6: ...6 www javad com...

Page 7: ...ks of sell modify publish distribute or allow any third party access to any graphics content information or data in this Manual without JAVAD GNSS express written consent and may only use such informa...

Page 8: ...ate the license at any time by destroying the Software and Manual JAVAD GNSS may terminate the license if you fail to comply with any of the Terms or Conditions You agree to destroy the Software and m...

Page 9: ...ditions will be governed by and construed in accordance with the laws of the State of California without reference to conflict of laws WEEE Directive The following information is for EU member states...

Page 10: ...isions of Directive 1999 5 EC Espa ol Spanish Por medio de la presente JAVAD GNSS declara que el DELTA Receiver cumple con los requisitos esenciales y cualesquiera otras disposiciones aplicables o exi...

Page 11: ...NSS izjavlja da je ta DELTA Receiver v skladu z bistvenimi zahtevami in ostalimi relevantnimi dolo ili direktive 1999 5 ES Slovensky Slovak JAVAD GNSS t mto vyhlasuje e DELTA Receiver sp a z kladn po...

Page 12: ...Product Number 01 580300 01 01 580301 01 01 580302 01 01 58030X 01 Product Options All conforms to the following Product Specification Safety Low Voltage Directive 73 23 EEC IEC 60950 1999 3rd Editio...

Page 13: ...njury DANGER UNDER NO CIRCUMSTANCES SHOULD THIS ACTION BE PERFORMED Screen Captures This manual includes sample screen captures Your actual screen can look slightly different from the sample screen du...

Page 14: ...support using the QUESTIONS system at the JAVAD GNSS World Wide Web site www javad com Return Material Authorization Initially the customer contacts support to report a problem Please refer to suppor...

Page 15: ...lt jobsite conditions The GNSS component of DELTA receivers means you can access the GPS Global Positioning System satellites of the United States the Galileo an upcoming global positioning system mai...

Page 16: ...Ministry of Defense For information on the status of this system visit the Coordinational Scientific Information Center website http www glonasscenter ru frame_e html Galileo an upcoming global posit...

Page 17: ...ive coordinates with high accuracy DGPS accommodates various implementation techniques that can be classified according to the following criteria The type of GNSS measurements used either code phase d...

Page 18: ...g quality position results requires the following elements Accuracy The accuracy of a position primarily depends upon the satellite geometry Geometric Dilution of Precision or GDOP and the measurement...

Page 19: ...LED will blink red When satellites are tracked the STAT LED will produce one blink for each tracked satellite green for GPS orange for GLONASS The On Off power button turns the receiver on and off Pre...

Page 20: ...he next three seconds Pressing the FN button for more than eight seconds has no impact After loading new firmware or clearing the receiver s NVRAM the receiver checks its internal file system During t...

Page 21: ...The 1PPS and Event marker TNS connectors up to two optional External Frequency Input Output TNC connector optional 1 2 2 Cables The DELTA receiver package includes standard communication and power ca...

Page 22: ...the instrument is completely dry before storing Dry the receiver with a soft clean cloth 1 3 Option Authorization File OAF JAVAD GNSS issues an Option Authorization File OAF to enable the specific opt...

Page 23: ...nstalling this software and other sections throughout the manual describe using this software with the receiver TriVU is a comprehensive Windows software product designed for controlling GNSS receiver...

Page 24: ...nnector Receiver to SAE power cable shall be used The external power supply needs to be Listed for US and Certified for EU countries it needs also to be a Limited Power Source and have an output rated...

Page 25: ...tton and DELTA will be turned ON when receiver is powered from external power supply Note Jumper is installed by default if DELTA ordered without TriPad 2 3 Connecting the Receiver and a Computer JAVA...

Page 26: ...t A 2 Press the power buttons on the receiver and computer to turn them on 3 Connect to the desired configuration software TriVU Figure 2 2 Connection via RS 232 2 3 2 Establishing a USB Cable Connect...

Page 27: ...re measuring Preparation Connecting the Receiver and a Computer Establishing a USB Cable Connection 27 www javad com 3 Connect to the desired configuration software TriVU Figure 2 3 Connection via USB...

Page 28: ...y with a period of 2 5 minutes If the receiver has an almanac you can considerably reduce the time needed to search for and lock on to satellite signals The receiver regularly updates the almanac and...

Page 29: ...algorithms to accurately calculate a new point In applications intended for post processing the receivers typically log code phase and or carrier phase measurements separately from common satellites...

Page 30: ...sition A Rover acting as a repeater to re transmit RTK Base station measurements to other rover receivers extending the range of a GPS system To configure manage files or maintain the receiver connect...

Page 31: ...ion parameters as needed for your particular jobsite Note Do not make other changes without consulting the TriVU Software Manual 1 Connect the receiver and computer as described in Connecting the Rece...

Page 32: ...e 3 2 Figure 3 2 Set all parameters to defaults 5 Click the MinPad tab and configure the following settings Table 3 1 then click Apply Figure 3 3 on page 33 Table 3 1 Receiver Parameters for the MinPa...

Page 33: ...or data recording 6 Click the Positioning tab and set the Elevation mask to 15 Figure 3 4 then click Apply Figure 3 4 Configure Receiver Positioning Elevation Mask 7 For the Base receiver click the Ba...

Page 34: ...meters then click Apply Figure 3 6 on page 35 Positioning Mode For post processed measuring select Standalone for RTK Missourians select RTK float or RTK fixed RTK Parameters RTK mode select either Ex...

Page 35: ...arch time Figure 3 6 Rover Configuration 9 For RTK measurings click the Ports tab and set the following port parameters for the serial port Table 3 6 then click Apply Figure 3 7 on page 36 Note For po...

Page 36: ...n the Multipath tab Set the following parameters and click Apply Figure 3 8 on page 37 Code multipath reduction enable Baud rate Select a baud rate to use for transmitting differential messages from t...

Page 37: ...ange it using TriVU or clearing the NVRAM For more details on the settings available for configuring the Base and Rover receivers refer to the TriVU Software Manual 12 Continue with other configuratio...

Page 38: ...o that the manual refers to both 3 2 1 Hardware The unit has two antenna inputs a and b as shown in the figure below It can be considered as two independent receivers In this case the receivers will b...

Page 39: ...w a brief description of the heading determination is given Heading and Pitch Angles Determination The local horizon frame is depicted inFigure 3 10 its axes are called North East and Up Figure 3 10 L...

Page 40: ...is the angle between the base line vector and the local horizon plane Figure 3 11 Local horizon coordinate frame Standalone Setup The standalone position of the antenna a or b is available along with...

Page 41: ...tenna a In other words the antenna b is calculated as an RTK rover corrected from the moving base b Figure 3 13 Differentially corrected operation of the unit Unit Setup Let us suppose for example tha...

Page 42: ...the listed above commands the input mode of one of the ports must be set For example if CMR corrections are received through the serial port c the setting set dev ser c imode cmr Angle messages The h...

Page 43: ...3 3 TriPad Configuration The DELTA s simple user interface TriPad consists of two buttons Power and FN and up to six LEDs that control and display the receiver s operation Figure 3 14 Figure 3 14 DEL...

Page 44: ...receiver and computer See Connecting the Receiver and a Computer on page 25 for this procedure 2 Start TriVU Select the COM port and click Ok Figure 3 1 Figure 3 15 Connection Parameters 3 Click the C...

Page 45: ...when logging receiver data in AFRM mode Values are 1 86400 seconds The default value is one second Elevation Mask for Log File parameter This parameter specifies the minimum elevation angle for the s...

Page 46: ...rding to a user defined schedule The Period and Phase parameters specify this schedule File rotation launches the moment the receiver time module Period is equal to Phase More precisely a new log file...

Page 47: ...existing file in the following three cases After pressing the Power button to turn on the receiver After resetting the receiver with TriVU After taking the receiver out of Sleep Mode Before Power Fail...

Page 48: ...Configuration TriPad Configuration How to Work with DELTAD G2 G2D 48 www javad com...

Page 49: ...s the antenna height must be measured Before collecting data make sure the Base and Rover receivers contain a current almanac and current ephemeris data see Collecting Almanacs and Ephemerides on page...

Page 50: ...he bottom of the receiver at the base of the mounting threads Slant measured from the marker to the lower edge of the antenna slant height measure mark SHMM located on both end panels of the receiver...

Page 51: ...a Recording Auto start parameter on page 63 for details Each time you turn off or on data recording either a new file opens or data appends to a particular file See Always Append to the File parameter...

Page 52: ...ms Secondly dual frequency receivers need far less observation time to reach the desired accuracy requirement After the measuring completes data the receivers collect can be downloaded onto a computer...

Page 53: ...radio modem link the Base receiver transmits its measurement and location data to the Rover receiver The Rover based on the transmitted data and its own observation data immediately conducts a baseli...

Page 54: ...correct messages dependent on the message type received Total number of received corrupt messages dependent on the message type received If the receiver is not for some reason receiving differential...

Page 55: ...ovide appropriate functionality As JAVAD GNSS releases firmware updates loading these updates into the receiver will ensure that the receiver operates at its full potential 5 1 Downloading Files to a...

Page 56: ...t the COM port and click Ok Figure 5 1 Figure 5 1 Connection Parameters 3 Click File File Manager then click the Download path tab on the File Manager dialog box 4 Navigate to or create using the Crea...

Page 57: ...les hold down the shift key and click on nonsequential files to select several files at once or hold down the Ctrl key and click on individual files Figure 5 3 Download Files 7 Click the Download butt...

Page 58: ...click Exit on the File Manager dialog box 9 Continue with other operations Or click File Disconnect then File Exit to quit TriVU 5 2 Deleting Files Use the following steps to delete files from your r...

Page 59: ...5 Connection Parameters 3 Click File File Manager and select the file s to delete on the Current log files tab Figure 5 6 Figure 5 6 Current log files tab 4 To select multiple files hold down the shi...

Page 60: ...te For a complete list of options and their details visit the JAVAD GNSS website You can check the status of your receiver s options and load any new OAFs using the RS232 cable a computer and TriVU Re...

Page 61: ...d or not Expiration date the date the option will be disabled if applicable Since Options can be both purchased and leased the Current status of the option dis plays the currently effective value Opti...

Page 62: ...king an OAF on page 60 2 Click Load Figure 5 8 on page 61 to load a new OAF file or Update to update the OAF file The new receiver option loads onto the receiver and the Option Manager table updates 3...

Page 63: ...nt receiver s settings such as active antenna input elevation masks and recording interval and information about the receiver s internal file system Even though clearing the NVRAM is not a common nor...

Page 64: ...ing to hold the FN button 4 Wait until the four LEDs blink yellow 5 Release the FN button 5 5 2 Using TriVU to Clear NVRAM 1 Connect your receiver and computer See Connecting the Receiver and a Comput...

Page 65: ...The receiver will automatically disconnect once the NVRAM is cleared 5 6 Checking Firmware Version Use TriVU to check the firmware version of your receiver 1 Connect your receiver and computer See Con...

Page 66: ...r IDs Firmware version 4 When finished click OK then click File Disconnect then File Exit to quit TriVU 5 7 Loading New Firmware Base and Rover receivers must be loaded with the same firmware version...

Page 67: ...e Loading New Firmware Using TriVU to Clear NVRAM 67 www javad com 4 Select the COM port receiver is connected to Click the Test button to ensure the receiver is connected Click Next Figure 5 15 Figur...

Page 68: ...intenance Loading New Firmware Using TriVU to Clear NVRAM 68 www javad com 5 Select the ZIP archive or any file from unzipped set of firmware images or one image to load Click Next Figure 5 16 Figure...

Page 69: ...ver and File Maintenance Loading New Firmware Using TriVU to Clear NVRAM 69 www javad com 6 Open the required firmware folder Select the zip file and click Open Figure 5 17 Figure 5 17 New firmware pa...

Page 70: ...ww javad com 7 Click Next to load new firmware Figure 5 18 Figure 5 18 Files to load 8 Click Exit to quit Firmware Loader 9 Clear the receiver s NVRAM see Clearing the NVRAM on page 63 and update the...

Page 71: ...secure connections Double check for worn or defective cables Check all power sources Check that the most current software is downloaded onto the computer and that the most current firmware is loaded i...

Page 72: ...art TriVU 2 Click Configuration Receiver Ports 3 Change the Input for the port used for connection to Command The receiver does not lock on to satellites for a long period of time The receiver stores...

Page 73: ...ions on page 60 for details on how to check current options Order a new OAF with the desired options activated to enable or extend validity of the corresponding receiver options Contact your dealer or...

Page 74: ...io receivers according to the procedures listed in the applicable section The distance between the Base and Rover is too far Close the distance between the Base and Rover Use repeaters to increase rad...

Page 75: ...contact JAVAD GNSS Support Before contacting JAVAD GNSS Customer support about any problems with the receiver see Check This First on page 71 for some solutions that may fix the issue To contact JAVA...

Page 76: ...Troubleshooting Technical Support 76 www javad com...

Page 77: ...activity performance may degrade Note Use robust checking procedures in areas of extreme multipath or under dense foliage A 1 Receiver Specifications The following sections provide specifications for...

Page 78: ...R CAN optional up to two 1PPS output optional up to two Event Marker input optional TriPad Two LEDs STAT REC Two function buttons ON OFF FN Data Features Up to 100 Hz update rate for real time positio...

Page 79: ...003 1004 1005 1006 1007 1008 1019 1011 1012 1020 user selectable Ambiguity initialize OTF L1 L1 L2 Baseline Length Up to 50 km in the morning and evening Up to 32 km at noon Initialize time 5 seconds...

Page 80: ...a separation in m Cold Start Warm Start Reacquisition 35 sec 5 sec 1 sec 1 RTK update rate means the position update rate of the rover working in the extrapolation mode In the extrapolation mode you m...

Page 81: ...ode Carrier Tracking Functions Multipath reduction Code and Carrier PLL DLL settings Bandwidth order adjustable Smoothing interval Code and Carrier WAAS EGNOS WAAS optional EGNOS optional Memory Inter...

Page 82: ...led receptacle 5 pin ODU p n G80F1C T05QF00 0000 Figure A 1 Power Connector Table A 3 gives power connector specifications Table A 3 Power Connector Specifications 1 5 4 2 3 Number Signal Name Dir Det...

Page 83: ...ceptacle 7 pin ODU p n G80F1C T07QC00 0000 Figure A 2 RS 232C Connector Table A 4 gives the RS 232C cable connector specifications Table A 4 RS 232C Cable Connector Specifications 1 7 2 3 4 5 6 Number...

Page 84: ...connector is a sealed receptacle 5 pin ODU p n G80F2C P05QF00 0000 Figure A 3 Figure A 3 USB Connector Table A 5 gives the USB connector specifications Table A 5 USB Connector Specifications 1 2 3 4 5...

Page 85: ...7 pin ODU p n G80F2C P07QC00 0000 Figure A 4 Figure A 4 Ethernet Connector Table A 6 Ethernet Connector Specifications 7 6 1 2 3 4 5 Number Signal Name Dir Details 1 Not used 2 Power_GND Signal ground...

Page 86: ...The external antenna connector type is a TNC RF connector with an Applied Engineering Product p n 6001 7051 003 RF input from LNA 100 mA at 5 0 volts DC output EVENT and 1PPS Connectors Optional The E...

Page 87: ...e apparatus Only use attachments accessories specified by the manufacturer Use only with a pole cart stand or tripod specified by the manufacturer or sold with the apparatus When a cart is used use ca...

Page 88: ...mited Power Source and have an output rated for 4 5 35 V DC not less than 2A This may not be the same range as other JAVAD GNSS products with which you are familiar CAUTION To reduce the risk of elect...

Page 89: ...ltage and current requirements Note JAVAD GNSS recomends sertified Phihong power supply PSAA60W 120 JAVAD GNSS p n 22 570101 01 for indoor use Note Before plugging the power cord into an AC outlet mak...

Page 90: ...Safety Warnings Usage Warnings 90 www javad com...

Page 91: ...age to the product resulting from an accident disaster misuses abuse or modification of the product Warranty service may be obtained from an authorized JAVAD GNSS warranty service dealer If this produ...

Page 92: ...1731 Technology Drive San Jose CA 95110 USA Phone 1 408 573 8100 Fax 1 408 573 9100 www javad com Copyright JAVAD GNSS Inc 2009 All rights reserved No unauthorized duplication...

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