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Troubleshooting

Receiver Problems

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• 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 39.

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

“TriPad Configuration” on page 59 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 33.

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.

The elevation mask is above 15 degrees.

• Lower the elevation mask.

.The battery is low.

• Attach an external power source to the receiver.

• See “Powering the Receiver” on page 32 for details.

The transmitting and/or receiving antenna may be improperly connected.

• Check that the radio modem’s antenna is securely and properly connected to the antenna

connector.

• Check that the radio modem’s antenna is undamaged. If damaged, contact your JAVAD

GNSS dealer to replace the antenna.

The specified baud rate is incompatible with the baud rates the modem supports.

• The baud rate is the rate at which the receiver transmits differential messages to the

modem and vice versa. Change the baud rate to that which your modem supports.

.The Base and Rover modems use different radio link parameters.

• Configure the Base and Rover radio modems 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.

Содержание ALPHA

Страница 1: ...rved 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 ALPHA GNSS Receiver Operator s Manual Version 1 1 Last Revised March 23 2009 ...

Страница 2: ...www javad com ...

Страница 3: ...1 Introduction 15 1 1 Principles of Operation 16 1 1 1 GNSS Overview 16 1 1 2 Calculating 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 Internal Components 19 ALPHA GNSS Receiver 19 Bluetooth Module 19 Modem 20 Battery 20 1 2 2 External Components 20 Top panel 21 Front Panel 22 Back panel 23 Bot...

Страница 4: ...Establishing a USB Cable Connection 34 2 6 Bluetooth Module Configuration 38 2 7 Collecting Almanacs and Ephemerides 39 Chapter 3 Configuration 41 3 1 Configuring the Internal GSM Module 42 3 1 1 Configuring the GSM module for Point to Point radio link 44 3 1 2 Configuring the GSM module for Internet access 46 Settings for the RCV subtab 49 Settings for the NTRIP subtab 49 Settings for the SERVER ...

Страница 5: ...iVU to Clear NVRAM 82 5 6 Checking Firmware Version 83 5 7 Loading New Firmware 84 Chapter 6 Troubleshooting 89 6 1 Check This First 89 6 2 Powering Problems 90 6 3 Receiver Problems 90 6 4 Technical Support 93 6 4 1 Website 94 Appendix A Specifications 95 A 1 Receiver Specifications 95 A 1 1 General Details 95 A 1 2 GNSS Board Details 99 A 1 3 Bluetooth Module Details 100 A 1 4 GSM Module Details...

Страница 6: ...6 www javad com Appendix B Safety Warnings 105 General Warnings 106 Battery Pack Warnings 106 Power Supply 107 Usage Warnings 108 Appendix C Warranty Terms 109 ...

Страница 7: ...dify 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 information for the care and operation of your ALPHA The information and data in this Manual are a valuable asset of JAVAD GNSS and are developed by the expenditure of considerable work time and money and are the result ...

Страница 8: ...nate 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 manual upon termination of your use of the ALPHA receiver All ownership copyright and other intellectual property rights in and to the Software belong to JAVAD GNSS If these license terms are not acce...

Страница 9: ...must accept any interference received including interference that may cause undesired operation 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 reason able protection against harmful interference in residential installations This equipment generates uses and can radiate radio f...

Страница 10: ... by the party responsible for compliance could void your authority to operate such equipment Canadian Emissions Labeling Requirements This Class B digital apparatus meets all requirements of the Canadian Interference Causing Equipment Regulations Cet appareil numérique de la classe B respecte toutes les exigences du Réglement sur le matériel brouilleur du Canada ...

Страница 11: ...roduct Number 01 573401 01 01 573402 01 01 573403 01 Product Options All conforms to the following Product Specification Safety Low Voltage Directive 73 23 EEC IEC 60950 1999 3rd Edition EN 60950 1 2001 EMC Directive 89 336 EEC EN 300 328 EN 301 511 3GPP TS 51 010 1 EN 301 489 1 EN 301 489 1 Supplementary Information The product herewith complies with the essential requirements of the directive 19...

Страница 12: ...s the following conventions Note Supplementary information that can have an affect on system operation system performance measurements or personal safety CAUTION Notification that an action has the potential to adversely affect system operation system per formance data integrity or personal health Warning Notification that an action will result in system damage loss of data loss of warranty or per...

Страница 13: ... due to the receiver you have connected operating system used and settings you have specified This is normal and not a cause for concern Related Information Technical Assistance If you have a problem and cannot find the information you need in the product documentation contact your local dealer Alternatively request technical support using the JAVAD GNSS World Wide Web site at www javad com ...

Страница 14: ...Preface Related Information Technical Assistance 14 www javad com ...

Страница 15: ...ignals improving the accuracy and reliability of your measuring points and positions especially under difficult jobsite conditions The GNSS component of ALPHA receivers means you can access the GPS Global Positioning System satellites of the United States the Galileo an upcoming global positioning system maintained and operated by Galileo Industries and the GLONASS Global Navigation satellite Syst...

Страница 16: ...deration 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 positioning system maintained and operated by Galileo Industries a joint venture of several European space agencies companies working closely with the European Space Agency Unlike GPS and GLONASS t...

Страница 17: ...tive 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 differential measurements or carrier phase differential measurements If real time or post mission results required Real time applications can be further divided according to the source of differential...

Страница 18: ...ng 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 ranging errors Differential positioning DGPS and RTK strongly mitigates atmospheric and orbital errors and counteracts Selective Availability SA signals the US Department of Defense transmits with G...

Страница 19: ...his card model Table 1 1 ALPHA GNSS Receiver Bluetooth Module A combination of software and hardware technology that makes the ALPHA mobile wireless GNSS receiver that supports a point to point serial profile As such the ALPHA can transfer and synchronize files between the receiver and any other Bluetooth wireless technology device that supports serial profile including portable handheld devices a...

Страница 20: ...radio operation In the US the FCC regulates the use of radio transmitters requiring a license Broadcasting without a license can result in severe penalties including the confiscation of your radio and GNSS equipment Battery CAUTION Risk of explosion if battery is replaced by an incorrect type Dispose of used battery according to the instructions The ALPHA receiver is equipped with one no removable...

Страница 21: ...n 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 Pressing the FN key for less than one second switches the receiver between different information modes normal and extended information or between static and dynamic post processing modes depending on the receiver s configurat...

Страница 22: ... becomes red Release the FN key while the REC LED is red during the next three seconds Pressing the FN key 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 this operation the REC LED flashes orange and the file system is not accessible for CDU control display unit applications or for data recor...

Страница 23: ...n page 32 for detailed description of the BAT LED Figure 1 3 ALPHA Ports Back panel Figure 1 4 ALPHA Back Panel Bluetooth Antenna optional Bluetooth antenna for Bluetooth wireless technology GSM Antenna optional This is a SMA female connector for GSM modems Ext Antenna Connector BAT LED Power Serial USB Bluetooth Antenna GSM Antenna ...

Страница 24: ...rd communication and power cables for configuring the receiver and providing a power source to the receiver Receiver to computer RS232 serial cable connects the receiver s serial port and an external device hand held controller or computer p n p n 14 578103 01 Receiver to SAE power cable connects the receiver s power port and the power supply s SAE connector or the extension cable s SAE connector ...

Страница 25: ...en wipe off dirt with a soft cloth 2 Store in a location with a temperature of 20 35 C and no exposure to direct sunlight 3 Use a clean cloth moistened with a neutral detergent or water to clean the receiver Never use an abrasive cleaner ether thinner benzene or other solvents 4 Always make sure the instrument is completely dry before storing Dry the receiver with a soft clean cloth SAE to SAE cab...

Страница 26: ...me When the receiver is purchased a new OAF activates desired purchased options permanently Receiver options remain intact when clearing the NVRAM or resetting the receiver The OAF enables the following kinds of functions For a complete list of available options and details visit the JAVAD GNSS website http www javad com or consult your dealer Memory standard 0 MB Update rate standard 1 5 10 20 Hz...

Страница 27: ...teries on page 30 Power the receiver See Powering the Receiver on page 32 Collect almanacs and ephemerides See Collecting Almanacs and Ephemerides on page 39 2 1 Installing JAVAD GNSS Software Use the following software programs for configuring and maintaining the receiver TriVU ModemVU This software is available on the JAVAD GNSS website If downloading the program s from the website extract the p...

Страница 28: ...o the location of the TriVU program and double click the Setup exe icon 2 Follow the on screen installation instructions 2 1 2 Installing ModemVU ModemVUTM is a Windows application is a configuration program for the radio modem inside the receiver ModemVU is available from the JAVAD GNSS website Note Refer to the ModemVU Software Manual for full details on installing and using ModemVU Software 1 I...

Страница 29: ... communicate directly between receivers The SIM card must have GPRS support to communicate with a GPS Network IP address Note Both the Base and Rover receivers must have a SIM card installed supporting Circuit Switched Data and have subscriptions to the same service provider for proper communication To install the SIM card 1 Ensure the receiver is turned off 2 Open the front of the case screwing o...

Страница 30: ...ks should run at no less than 80 capacity after 500 charging cycles These batteries do not need to be drained before recharging DANGER NEVER ATTEMPT TO OPEN THE CASING OF THE DETACHABLE BATTERIES LITHIUM ION BATTERIES CAN BE DANGEROUS IF MISHANDLED DANGER DO NOT INCINERATE OR HEAT BATTERY PACK ABOVE 212 DEGREES FAHRENHEIT 100 DEGREES CELSIUS EXCESSIVE HEAT CAN CAUSE SERIOUS DAMAGE AND POSSIBLE EXP...

Страница 31: ... national safety ordi nances and matches the equipment s voltage and current requirements CAUTION Never attempt any maintenance or cleaning of the supply while plugged in Always remove supply from AC power before attempting service or cleaning Warning If the voltage supplied is below the minimum specification the receiver will suspend operation If the voltage supplied is above the maximum specific...

Страница 32: ...he BAT LED flashes every second The LED light indicates the same as described above If the battery is full charged and the receiver is connected to DC power supply the BAT LED is solid green To charge the receiver internal batteries take the following steps Plug the Receiver to SAE cable s 5 pin connector into the power port of the receiver labeled PWR Connect the opposite end of this cable with t...

Страница 33: ...talled Once you have established a connection between the receiver and the computer controller you will be able to configure the receiver and its components send commands to the receiver download files from the receiver s memory as well as upload new firmware upload an OAF and upload configuration files to a receiver using TriVU 2 5 1 Establishing a Wireless Connection The ALPHA receiver contains ...

Страница 34: ...M1 to the receiver s serial port A 6 Press the power buttons on the receiver and computer to turn them on 7 Connect to the desired configuration software TriVU 2 5 3 Establishing a USB Cable Connection Make sure the computer has JAVAD GNSS s USB driver for ALPHA receivers installed available from www javad com before continuing and you have the proper USB cable to connect ALPHA s USB port to your ...

Страница 35: ...mputer Establishing a USB Cable Connection 35 www javad com Select No not this time and click Next Figure 2 3 Figure 2 3 New Hardware Wizard Step 1 Select Install from a list of specific location and click Next Figure 2 4 Figure 2 4 New Hardware Wizard Step 2 ...

Страница 36: ... 36 www javad com Select the USB driver folder and click Next Figure 2 5 Figure 2 5 Selecting folder with USB driver Select Continue Anyway Figure 2 6 Figure 2 6 Warning 4 Repeat all these steps to install driver for virtual serial port Follow the on screen instructions to finish installation process ...

Страница 37: ...SB Cable Connection 37 www javad com 5 After Windows finishes installing the driver you will be able to connect the receiver and the computer via USB ports 6 Connect to the TriVU select the new generated COM port from the list and click OK Figure 2 7 Figure 2 7 Connection Parameters ...

Страница 38: ...he receiver as described in Connecting the Receiver and a Computer on page 33 2 Start TriVU Select the COM port and click Ok Figure 2 8 Figure 2 8 Connection Parameters 3 Click Configuration Receiver Figure 2 9 Figure 2 9 Configuration Receiver 4 In the Ports tab select the BLT subtab Figure 2 10 Name The name of the receiver s Bluetooth module Here the user can enter an arbitrary string comprisin...

Страница 39: ...ites in the same system only GPS and GLONASS satellites broadcast ephemeris data cyclically with a period of 30 seconds GPS satellites broadcast almanac data cyclically with a period of 12 5 minutes GLONASS satellites broadcast almanac data cyclically 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 signa...

Страница 40: ...des Establishing a USB Cable Connection 40 www javad com After loading a new OAF Note If 15 minutes have passed and the receiver does not lock on to satellites clear the NVRAM See for details After loading new firmware After clearing the NVRAM Before measuring ...

Страница 41: ...intended for post processing the receivers typically log code phase and or carrier phase measurements separately from common satellites and during the same time interval This data is then processed using post processing software for example Justin When configuring receivers for RTK measuring use the following list to ensure the receivers are properly set up Perform pre measuring preparation as des...

Страница 42: ...embedded in JAVAD GNSS receivers ModemVU provides the following functions Connecting a computer to an integrated GSM module via a serial port Displaying information about the module installed in the receiver Programming the GSM module s settings See the ModemVU Software Manual available on the JAVAD GNSS website for details on configuring the receiver with an internal GSM radio modem For JAVAD GNS...

Страница 43: ...nternal GSM Module 43 www javad com 3 Select the radio type ALPHA Figure 3 1 and click OK Figure 3 1 Options window 4 Select the COM port the receiver is connected to Figure 3 2 on page 43 Click Connect Figure 3 2 Connect to ModemVU ...

Страница 44: ...d the GSM modem 1 On the General tab set the following parameters Table 3 1 and click Apply Figure 3 3 on page 44 In this tab modem and service status and possible errors are displayed Table 3 1 Receiver Parameters for the General Tab Figure 3 3 General tab 2 On the Master Slave tab set the following parameters Table 3 2 and click Apply Figure 3 3 on page 44 Parameter Base Receiver Rover Receiver ...

Страница 45: ...ase station Parameter Base Receiver Rover Receiver Dial number Leave blank Enter the phone number of the base GSM modem Send time out Enter a period of time in seconds in which the base rover GSM modem will send a service word to the rover base GSM modem This parameter is used to maintain reliable communication between a pair of modems and avoid unnecessary modem reinitialization To ensure reliabl...

Страница 46: ...or the General Tab Figure 3 5 General tab 2 In the GPRS tab it is necessary to set the dial number user name and password access point name and PDP context identifier to establish a GPRS connection As usually this information is given by cell provider Figure 3 6 on page 47 PPP button opens the PPP parameters window that allows user to set up the Point to Point protocol parameters The Point to Poin...

Страница 47: ...Main Subtab Parameter Value Mode OFF means service is disabled RCV means that modem will receive data from another remote JAVAD GNSS receiver configured as a base station This base station have to be connected with Internet via Ethernet or GPRS and have static IP address NTRIP are useful to provide a method to establish connection to an NTRIP caster request data from particular mount point and the...

Страница 48: ...se station TCPCL port Specify the type of incoming data to accept on the TCPCL receiver port None means that the port will ignore any incoming data Command port is in command mode Being in this mode the receiver s port recognizes commands sent by the user Echo echo mode RTCM 2 x RTCM 2 x input mode RTCM 3 x RTCM 3 x input mode CMR CMR input mode For more information on CMR format please refer to f...

Страница 49: ...ion IP address Port Login and Password are the parameters of other receiver configured as a base station and connected with Internet via Ethernet or GPRS The description of these parameters exceeds the scope of this document see TriVU Software Manual available from http www javad com for detailed information of base station s configuration and Ethernet and TCP port settings Settings for the NTRIP ...

Страница 50: ...ssage to NTRIP caster only once after connection to the caster is established 1 86400 receiver will send NMEA GGA messages to the NTRIP caster periodically every specified number of seconds Mountpoint drop down list box allows to select the necessary mount point from the list This drop down list box specifies the mount point of the NTRIP caster to get data from The detailed information about each ...

Страница 51: ...igure manage files or maintain the receiver connect the receiver and a computer using one of the following methods and start TriVU use a Bluetooth enabled external device computer use an RS232 cable use a USB cable and a computer with the JAVAD GNSS USB driver installed available on the JAVAD GNSS website TriVU is a software used to manage the various functions of your receiver The full range of T...

Страница 52: ...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 Receiver and a Computer on page 33 2 Start TriVU Select the COM port and click Ok Figure 3 11 Figure 3 11 Connection Parameters 3 Click Configuration Receiver Note Click Apply after making any configuration change other...

Страница 53: ...re 3 12 Set all parameters to defaults 5 Click the MinPad tab and configure the following settings Table 3 5 then click Apply Figure 3 13 on page 54 For all MinPad settings see TriPad Configuration on page 59 Table 3 5 Receiver Parameters for the MinPad Tab Parameter Base Receiver Rover Receiver Recording interval Enter 15 seconds Elevation mask angle Enter 15 degrees File name prefix Enter a uniq...

Страница 54: ...ver Positioning MinPad for data recording 6 Click the Positioning tab and set the Elevation mask to 15 Figure 3 14 then click Apply Figure 3 14 Configure Receiver Positioning Elevation Mask 7 For the Base receiver click the Base tab and set the following parameters Figure 3 15 on page 55 then click Apply GPS GLO at one time enable ...

Страница 55: ...nd set the following parameters then click Apply Figure 3 16 on page 56 Positioning Mode For post processed measurings select Standalone for RTK measurings select RTK float or RTK fixed RTK Parameters RTK mode select either Extrapolation for RTK float kinematic or Delay for RTK fixed static Extrapolation is for low latency high frequency output 5 Hz RTK applications The Rover will extrapolate the ...

Страница 56: ...the integer ambiguity search time Figure 3 16 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 17 on page 57 Note For post processed measurings keep the default values for these parameters Table 3 6 Receiver Parameters for the Ports Tab Parameter Base Receiver Rover Receiver Input n a Leave th...

Страница 57: ...anced tab and then the Multipath tab Set the following parameters and click Apply Figure 3 18 on page 58 Code multipath reduction enable Baud rate Select a baud rate to use for transmitting differential messages from the receiver board to the modem module The baud rate must match the modem s serial port speed RTS CTS Select to enable handshaking Parameter Base Receiver Rover Receiver ...

Страница 58: ... will remain until you change 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 configuration activities or click File Disconnect then File Exit to quit TriVU Disconnecting before exiting ensures proper port management Note Disconnect the receiver from TriVU before e...

Страница 59: ...ecording on or off FN key Show the status of satellites being tracked STAT LED Show data recording status REC LED Show each time data records to internal memory REC LED Show the status of post processing mode static or dynamic when performing a Post Processing Kinematic measuring with the help of FN key REC LED You use TriVU to configure TriPad settings Refer to the TriVU Software Manual for all p...

Страница 60: ...arameters 3 Click the Configuration Receiver and open the TriPad tab Set the following parameters and click Apply See the following pages for descriptions of these parameters Recording interval on page 61 Elevation mask for log file on page 61 File name prefix on page 61 Always append to the file on page 62 Files Creation mode on page 62 Automatic File Rotation Mode AFRM on page 62 ...

Страница 61: ...but also 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 satellites whose data will be put in the receiver files logged when pressing FN The default value is five degrees File Name Prefix parameter This parameter specifies what prefix will be added t...

Страница 62: ...g a file rotation event the receiver closes the current file and opens a new one according 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 opens immediately before the scheduled epoch causing data tagged with this epoch to be recorded to the new log fil...

Страница 63: ...after power is restored to the receiver Specified file refers to the file name entered in the Always append to file parameter Before Power Failure Enabled Radio Button Results Off On Always 1 Receiver data logged to file specified Data logging will not resume when power is restored Receiver will resume data logging to the same file when power is restored Receiver will resume data logging to the sa...

Страница 64: ...avad com Also if Always is enabled your receiver will automatically start logging data to a newly created or an existing file in the following three cases After pressing the Power key to turn on the receiver After resetting the receiver with TriVU After taking the receiver out of Sleep Mode ...

Страница 65: ...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 39 4 1 1 Set up Receiver The Base station must be set up logging data and transmitting data before setting up the Rover receiver Receiver setup for either post process or RTK measurings is the same To set up the Base receiver...

Страница 66: ...the 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 The point to which measuring with GNSS measures is called the Phase Center of the antenna This is analogous to the point at which a distance meter measures in a prism A user must enter the prism offs...

Страница 67: ...for more information on collecting data 1 Turn on the receiver 2 Once the receiver has locked on to eight or more satellites the STAT light will green 3 A red color of POS LED indicates that the receiver has not solved a position Four or more satellites provide optimal positioning 4 Once the red POS LED is green the receiver has a position and measuring can begin wait for green light before beginn...

Страница 68: ...age 26 for more information Use TriVU to enable the desired FN key mode in the receiver either LED blink mode switch for static measurings or Occupation mode switch for kinematic measurings See Data 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 on...

Страница 69: ... baselines whose lengths do not exceed 15 kilometers 9 32 miles For baselines of 15 kilometers or greater use dual frequency receivers Dual frequency receivers have two major benefits First dual frequency receivers can estimate and remove almost all ionospheric effect from the code and carrier phase measurements providing much greater accuracy than single frequency receivers over long baselines or...

Страница 70: ...vailable Note Remember if the REC LED blinks green the current mode is dynamic if it blinks yellow the current mode is static 4 5 Real Time Kinematic Measuring With RTK measuring as with kinematic measuring described above one receiver serves as the reference station and conducts observations with its antenna affixed to a stationary tripod or some other device The other receiver functions as a rov...

Страница 71: ...the float estimate is used instead RTK fixed where the Rover receiver computes current relative coordinates with ambiguity fixing in differential mode The LQ field reflects the status of the received differential messages and contains the following information Data link quality in percentage Time in seconds elapsed since the last received message Total number of received correct messages dependent...

Страница 72: ...Setup and Measuring Real Time Kinematic Measuring Collect Data 72 www javad com ...

Страница 73: ...rovide 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 Computer When your measuring finishes you can download your measuring files to a computer for storage post processing or backup Also the ALPHA memory holds a finite amount of files and information so...

Страница 74: ...ct 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 Create button the folder in which to download and store files Figure 5 2 Figure 5 2 Download path tab ...

Страница 75: ...iles 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 button During the download status indicators display next to each file Figure 5 4 on page 76 Red indicator file currently downloading Green indicator file has successfully downloaded ...

Страница 76: ...e 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 receiver 1 Connect your receiver and computer See Connecting the Receiver and a Computer on page 33 for this procedure ...

Страница 77: ...5 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 shift key and click on nonsequential files to select several files at once or hold down the Ctrl key and click on individual files ...

Страница 78: ...t 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 Refer to the TriVU Software Manual for a more complete description of the TriVU software 1 Connect your receiver and computer See Connecting the Receiver and a Computer on page 33 for this procedure 2 Start TriVU Select the...

Страница 79: ...ate 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 Option values can be one of the following 1 or the firmware version does not support this option 0 the receiver option is disabled positive integer the option is enabled yes or no the option is either enabled or disabled Figu...

Страница 80: ...cking an OAF on page 78 2 Click Load Figure 5 8 on page 79 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 Navigate to the location of the new Option Authorization File OAFs have jpo extension and are unique to each receiver Figure 5 9 Figure 5 9 Load OAF 4 Select the appropriate file and click Open The ...

Страница 81: ...rrent 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 normally a recommended operation there are times when clearing the NVRAM can eliminate communication or tracking problems Clearing the NVRAM in your ALPHA can be interpreted as a soft boot in your ...

Страница 82: ...uing to hold the FN key 4 Wait until the four LEDs blink yellow 5 Release the FN key 5 5 2 Using TriVU to Clear NVRAM 1 Connect your receiver and computer See Connecting the Receiver and a Computer on page 33 for this procedure 2 Start TriVU Select the COM port and click Ok Figure 5 7 Figure 5 10 Connection Parameters 3 Click the Tools Clear NVRAM Figure 5 11 Figure 5 11 Clear NVRAM ...

Страница 83: ... 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 Connecting the Receiver and a Computer on page 33 for this procedure 2 Start TriVU Select the COM port and click Ok Figure 5 7 Figure 5 12 Connection Parameters 3 Click on Help About TriVU Figure 5 13 F...

Страница 84: ...er 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 Use the latest firmware version available for download from the JAVAD GNSS website to ensure your receiver has the most recent updates The receiver uses Firmware Loader to load firmware onto the rece...

Страница 85: ...ce Loading New Firmware Using TriVU to Clear NVRAM 85 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 Figure 5 15 Connection Parameters ...

Страница 86: ...aintenance Loading New Firmware Using TriVU to Clear NVRAM 86 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 5 16 Firmware Source ...

Страница 87: ...iver and File Maintenance Loading New Firmware Using TriVU to Clear NVRAM 87 www javad com 6 Open the required firmware folder Select the zip file and click Open Figure 5 17 Figure 5 17 New firmware package ...

Страница 88: ...www 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 81 and update the almanac Collecting Almanacs and Ephemerides on page 39 after loading new firmware ...

Страница 89: ...nnections Double check for worn or defective cables Check all power sources for drained batteries or incorrectly connected cables Check that the most current software is downloaded onto the computer and that the most current firmware is loaded into the receiver Check the JAVAD GNSS website for the latest updates If connecting via Bluetooth check that the port used for connection is in Command mode...

Страница 90: ...s Cable specific problems The cable is not properly plugged in Check that the cable connector is attached to the correct receiver port Unplug the cable then securely and properly reconnect it to the receiver See ALPHA GNSS Receiver on page 19 and Connector Specifications on page A 11 for information on the receiver s connectors The cable is damaged Use an undamaged cable Contact your Dealer to rep...

Страница 91: ... 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 33 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 rece...

Страница 92: ...the Receiver and a Computer on page 33 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 The elevation mask is above 15 degrees Lower the elevation mask The battery is low Attach an external power source to the receiver See Powering the Receiver on page 32 for details T...

Страница 93: ...ion is enabled For details see Checking an OAF on page 78 The receiver s memory has no free space Download and or delete data files to free up space for new files see Downloading Files to a Computer on page 73 and Deleting Files on page 76 Use the AFRM feature See TriPad Configuration on page 59 6 4 Technical Support If the troubleshooting hints and tips in this Operator s Manual fail to remedy th...

Страница 94: ... The symptoms and or error codes messages that precede and follow the problem 4 The activities being tried when the problem occurs If possible include the exact steps being taken up to when the error message or other problem occurs 5 How regularly the problem occurs Generally a customer support representative will reply within 24 hours depending on the severity of the problem 6 4 1 Website The JAV...

Страница 95: ...eriods of large PDOP and during periods of increased ionospheric 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 the receiver and its internal components A 1 1 General Details Table below lists the receiver s general specifications Table A 1 Receiv...

Страница 96: ...45 to 85 RH with battery within 1 week 45 C to 85 C without battery Humidity 95 non condensing Power Internal battery One internal Li Ion battery 7 2 V 1 37 Ah with internal charger Number of built in batteries 1 Operating time Up to 10 hours Input voltage 7 to 40 V DC for work 7 to 40 V DC for charge battery External power Port 1 port Input voltage 7 to 40 V DC I O Communication Ports Serial RS23...

Страница 97: ... 20 50 100 Hz optional DGPS Correction format RTCM SC104 Ver 2 1 2 2 2 3 and 3 0 RTCM 2 x message type 1 3 9 31 32 34 user selectable RTCM 3 0 message type 1003 1004 1005 1006 1007 1008 1011 1012 1019 1020 user selectable Process interval 1 5 10 20 50 100 Hz optional Output interval for RTCM correction data 1 5 10 20 50 100 Hz optional Elevation mask 0 to 90 deg independent of data logging Multi b...

Страница 98: ...ency Common Satellites Percentage of fixing Results RTK coordinates HRMS VRMS Covariance Matrix Ambiguity fixing level Selectable thresholds Low 95 Medium 99 5 High 99 9 Measuring Modes Base or Rover Static Fast Static Kinematic Stop and Go RTK Real time Kinematic DGPS Differential GPS SBAS DGPS Measuring Accuracy Autonomous 2 m Static Fast Static Horizontal 0 3 cm 0 5 ppm base_line_length Vertica...

Страница 99: ...gnals L1 L2 C A and P Code 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 Internal Memory Up to 256MB of on board non removable memory for data storage Raw Data Recording Up to 100 times per second 100Hz Data Type Code and Carrier from GPS L1 L2 Galileo E1...

Страница 100: ...neous Supported profiles LM L2CAP SDP SPPP Frequency Country Code North America and Europe Operating Systems Quad band 850 900 1800 1900 MHz Tx power 850 900 MHz Class 4 2 Watt 1800 1900 MHz Class 1 1 Watt Typical sensitivity 107dBm typ 850 900 MHz 106dBm typ 1800 1900 MHz GPRS Multi slot class 10 4 down 2 up 5 Total Mobile station class B Coding scheme CS1 CS4 PBCCH support CSD Asynchronous trans...

Страница 101: ...re A 1 Power Connector Table A 5 gives power connector specifications Table A 5 Power Connector Specifications Connectors RF MMCX Regulatory and Approvals FCC IC CCC FTA PTCRB R TTE GCF EMC QS9000 manufacturing RoHS WEEE 2 1 5 4 3 Number Signal Name Dir Details 1 Power_INP P 10 to 30 volts DC input 2 Power_INP P 10 to 30 volts DC input 3 Power_GND P Ground power return 4 Power_GND P Ground power r...

Страница 102: ... n G80F1C T07QC00 0000 Figure A 2 RS 232C Connector Table A 6 gives the RS 232C cable connector specifications Table A 6 RS 232C Cable Connector Specifications 1 2 7 6 5 4 3 Number Signal Name Dir Details 1 Power_OUT P Power Output supplied voltage 2 GND Signal ground 3 CTS I Clear to send 4 RTS O Request to send 5 RXD I Receive data 6 TXD O Transmit data 7 Not used ...

Страница 103: ... USB connector specifications Table A 7 USB Connector Specifications RS422 and CAN Connector The RS422 CAN connector is a sealed receptacle M12 8 pin Male receptacle FM M16x1 5 flying lead connector Binder USA p n 09 3481 700 08 Figure A 4 Figure A 4 RS422 and CAN Connector 1 2 3 4 5 Number Signal Name Dir Details 1 Not used 2 USB_PWR P Bus power 3 GND Ground 4 USB D I O Data plus 5 USB D I O Data...

Страница 104: ...External Antenna RF Connector EVENT and 1PPS Connectors The EVENT and 1PPS connectors are coaxial female receptacles of BNC series Kings Electronics part number KC 79 108 These connectors are optional Number Signal Name Dir Details 1 PWR IN P Bus power 2 GND Signal ground 3 422_TX O Port TX line 4 422_TX O Port TX line 5 422_RX I Port RX line 6 422_RX I Port RX line 7 CAN_H I O CAN_H bus line domi...

Страница 105: ...the 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 caution when moving the cart apparatus combination to avoid injury from tip over Unplug this apparatus during lightning storms or when unused for long periods of time Refer all servicing to qualified ...

Страница 106: ...omply with RF exposure requirements maintain at least 20 cm between the user and the GSM module Battery Pack Warnings CAUTION Risk of explosion if battery is replaced by an incorrect type Dispose of used battery according to the instructions DANGER NEVER ATTEMPT TO OPEN THE CASING OF THE DETACHABLE BATTERIES LITHIUM ION BATTERIES CAN BE DANGEROUS IF MISHANDLED DANGER DO NOT INCINERATE OR HEAT BATT...

Страница 107: ... local and national safety ordi nances and matches the equipment s voltage and current requirements CAUTION Never attempt any maintenance or cleaning of the supply while plugged in Always remove supply from AC power before attempting service or cleaning Warning If the voltage supplied is below the minimum specification the receiver will suspend operation If the voltage supplied is above the maximu...

Страница 108: ...roneous measurements may occur Note Do not connect or disconnect equipment with wet hands you are at risk of electric shock if you do The owner should periodically test this product to ensure it provides accurate measurements Inform JAVAD GNSS immediately if this product does not function properly Only allow authorized JAVAD GNSS warranty service centers to service or repair this product ...

Страница 109: ...mage 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 product is delivered by mail purchaser agrees to insure the product or assume the risk of loss or damage in transit to prepay shipping charges to the warranty service location and to use the original ship...

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