NetView Software Manual

NetViewSoftware Manual

Version 1.1Last Revised August 3, 2011All contents in this manual are copyrighted by JAVAD GNSS.All rights reserved.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

www.javad.com

TABLE OF CONTENTS

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Terms and Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Technical Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Chapter 1. Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91.1. Setting up NetView . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.1.1. System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101.1.2. Installing NetView . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101.1.3. Uninstalling NetView . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.2. Getting Connected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111.2.1. Starting NetView. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111.2.2. Establishing connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121.2.3. TCP connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131.2.4. Serial connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131.2.5. USB connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141.2.6. CAN connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151.2.7. Closing NetView . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Chapter 2. Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172.1. Working with the receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.1.1. Measurements tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182.1.2. Sky Plot tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202.1.3. Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202.1.4. Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.2. Configuring the Receiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222.2.1. General tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232.2.2. TriPad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252.2.3. Positioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282.2.4. Base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342.2.5. Rover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 372.2.6. Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 402.2.7. Networking Tab. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 442.2.8. Event Tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 513www.javad.com

2.2.9. Advanced. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

2.3. Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 582.3.1. Load Script Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

2.4. Working with Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Chapter 3. Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 633.1. Usage of TCPO for corrections transmitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

3.1.1. Base Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 633.1.2. Rover Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 644 www.javad.com

PREFACE

The materials available in this User Manual (the Manual) have been prepared by JAVAD GNSS forowners of JAVAD GNSS products. It is designed to assist owners with the operating of the NetViewSoftware and its use is subject to these terms and conditions (the Terms and Conditions).

Note: Please read these Terms and Conditions carefully.

Terms and ConditionsUSE JAVAD GNSS products are designed to be used by a professional. The user is expected to have agood knowledge and understanding of the user and safety instructions before operating, inspecting oradjusting. Always wear the required protectors (safety shoes, helmet, etc.) when operating the receiver. COPYRIGHT All information contained in this Manual is the intellectual property of, and copyrightedmaterial of JAVAD GNSS. All rights are reserved. You may not use, access, copy, store, display, createderivative works 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 onlyuse such information for the operation of your software. The information and data in this Manual are avaluable asset of JAVAD GNSS and are developed by the expenditure of considerable work, time andmoney, and are the result of original selection, coordination and arrangement by JAVAD GNSS.TRADEMARKS NetView, JAVAD GNSS are trademarks or registered trademarks of JAVADGNSS. Windows is a registered trademark of Microsoft Corporation, Bluetooth word mark is ownedby the Bluetooth SIG, Inc. Product and company names mentioned herein may be trademarks of theirrespective owners.DISCLAIMER OF WARRANTY EXCEPT FOR ANY WARRANTIES IN THIS GUIDE OR AWARRANTY CARD ACCOMPANYING THE PRODUCT, THIS GUIDE AND SOFTWARE AREPROVIDED AS-IS. THERE ARE NO OTHER WARRANTIES. JAVAD GNSS DISCLAIMS ANYIMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR USE ORPURPOSE. JAVAD GNSS AND ITS DISTRIBUTORS SHALL NOT BE LIABLE FOR TECHNICALOR EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN; NOR FOR INCIDENTAL ORCONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE ORUSE OF THIS MATERIAL. SUCH DISCLAIMED DAMAGES INCLUDE BUT ARE NOT LIMITEDTO LOSS OF TIME, LOSS OR DESTRUCTION OF DATA, LOSS OF PROFIT, SAVINGS ORREVENUE, OR LOSS OF THE PRODUCT'S USE. IN ADDITION, JAVAD GNSS IS NOTRESPONSIBLE OR LIABLE FOR DAMAGES OR COSTS INCURRED IN CONNECTION WITHOBTAINING SUBSTITUTE PRODUCTS OR SOFTWARE, CLAIMS BY OTHERS,INCONVENIENCE, OR ANY OTHER COSTS. IN ANY EVENT, JAVAD GNSS SHALL HAVE NO5www.javad.com

Preface

Terms and Conditions

LIABILITY FOR DAMAGES OR OTHERWISE TO YOU OR ANY OTHER PERSON OR ENTITY INEXCESS OF THE PURCHASE PRICE FOR THE NETVIEW SOFTWARE. LICENSE AGREEMENT Use of any computer programs or software supplied by JAVAD GNSS ordownloaded from a JAVAD GNSS website (the Software) in connection with the JAVAD GNSSreceivers constitutes acceptance of these Terms and Conditions in this Manual and an agreement to abideby these Terms and Conditions. The user is granted a personal, non-exclusive, non-transferable license touse such Software under the terms stated herein and in any case only with a single computer. You may notassign or transfer the Software or this license without the express written consent of JAVAD GNSS. Thislicense is effective until terminated. You may terminate the license at any time by destroying the Softwareand Manual. JAVAD GNSS may terminate the license if you fail to comply with any of the Terms orConditions. You agree to destroy the Software and guide upon termination of your use of software. Allownership, copyright and other intellectual property rights in and to the Software belong to JAVADGNSS. If these license terms are not acceptable, return any unused software and guide.CONFIDENTIALITY This Manual, its contents and the Software (collectively, the ConfidentialInformation) are the confidential and proprietary information of JAVAD GNSS. You agree to treatJAVAD GNSS' Confidential Information with a degree of care no less stringent that the degree of care youwould use in safeguarding your own most valuable trade secrets. Nothing in this paragraph shall restrictyou from disclosing Confidential Information to your employees as may be necessary or appropriate tooperate NetView Software. Such employees must also keep the Confidentiality Information confidential.In the event you become legally compelled to disclose any of the Confidential Information, you shall giveJAVAD GNSS immediate notice so that it may seek a protective order or other appropriate remedy.WEBSITE; OTHER STATEMENTS No statement contained at the JAVAD GNSS website (or any otherwebsite) or in any other advertisements or JAVAD GNSS literature or made by an employee orindependent contractor of JAVAD GNSS modifies these Terms and Conditions (including the Softwarelicense, warranty and limitation of liability). MISCELLANEOUS The above Terms and Conditions may be amended, modified, superseded, orcanceled, at any time by JAVAD GNSS. The above Terms and Conditions will be governed by, andconstrued in accordance with, the laws of the State of California, without reference to conflict of laws. 6 www.javad.com

Preface

About this Manual

Symbols and Typographic Conventions

About this ManualThis Manual is designed to help you get familiar with the NetView User Interface and introduce you tothe NetView main features.

Symbols and Typographic ConventionsThis Manual uses the following text conventions:Example Description.Main Titles of dialog windows/boxes, names of menu options.

Screen CapturesThis Manual includes sample screen captures. Your actual screen can look slightly different from thesample screen due to the receiver you have connected, operating system used and settings you havespecified. This is normal and not a cause for concern.

Technical AssistanceIf you have a problem and cannot find the information you need in the product documentation, contactyour local dealer. Alternatively, request technical support using the JAVAD GNSS World Wide Web siteat: www.javad.com.To contact JAVAD GNSS Customer Support use the QUESTIONS button available on thewww.javad.com.7www.javad.com

Preface

Technical AssistanceScreen Captures8 www.javad.com

Chapter 1

GETTING STARTED

NetView is a Windows application for controlling navigation receivers developed and manufactured byJAVAD GNSS. Before you start using NetView, you should become familiar with its functions and learnhow to install, launch, exit, and uninstall the program. NetView software provides the following functionality:

Directly connect to the receiver(s), using one of the following interfaces: serial, USB, TCP/IP(through the Ethernet ports or WiFi adapter), Secure TCP/IP (SSL/TSL), Bluetooth, CAN (KvaserCAN Interface).

5 slots to store the most frequently used connection settings. Displaying of the total number and the status of all visible and tracked satellites. Displaying the receivers current position and time in real time. Real time satellites mapping. Setup of various parameters of receiver. Clear NVRAM, receiver reset, return to the initial parameter values. Start and stop file recording, deleting files, downloading files using file manager. Display of the current receiver options and loading of Option Authorization Files into the receiver. Manual mode terminal allows sending commands with prompt tip and view receiver response.

This terminal supports a TCL script language to automate the common receiver control tasks. Connecting to multiple receivers. Support for multiple connections to the receiver for optimized simultaneous work Update firmware direct from the JAVAD GNSS website by the user request. (Support is available

starting with firmware version 3.2.1).9www.javad.com

Getting Started

Setting up NetViewSystem requirements

1.1. Setting up NetView

1.1.1. System requirements

Check that you have the following required (or recommended) items before installing and using NetView. PC-compatible with Intel Pentium 1.2 GHz or faster1. 100 MB free disk space. 512 MB RAM or more (1024 MB recommended). 32-bit or 64-bit operating system such as MS Windows NT, 2000, XP, Windows Server 2003,

Windows Server 2008, VISTA, Windows 7. Color monitor at 800x600 screen resolution. Microsoft Internet Explorer version 6 or higher (for some functions).

1.1.2. Installing NetView

NetView is available from the JAVAD GNSS website. 1. If downloading the program from the website, extract the program files into a folder on your hard

drive.2. Navigate to the location of the NetView program and double-click the Setup.exe icon.3. The installation process will be started. Click Install to install the software. Click Dont install to

quit,

Figure 1-1. Installation10 www.javad.com

1. Processor speed, RAM and disk space depends on the number of concurrent receivers

Getting Started

Getting Connected

Uninstalling NetView

1.1.3. Uninstalling NetView

To uninstall NetView use the Add and Remove Programs from the Control Panel.1. Open the Control Panel, then Add or Remove Programs tool. Find NetView, and click Change/

Remove.

2. This will uninstall NetView.

1.2. Getting Connected

1.2.1. Starting NetView

NetView can be launched, as any other Windows program, for example, with the StartAll ProgramsJAVAD GNSS NetView.Once NetView is launched, the Start window will appear (Figure 1-2):11www.javad.com

Figure 1-2. Start window

Getting Started

Getting ConnectedEstablishing connection

Get started - opens the software user manual Visit NetView page - opens software page on JAVAD GNSS web site Visit JAVAD GNSS web site - opens www.javad.com

1.2.2. Establishing connection

Click Connect. The dialog window with the connection settings appears (Figure 1-3).

Figure 1-3. Connection window

Click the drop-down list box and select the desired connection type: TCP - to establish connection between your computer and remote receiver; SER - to establish a connection between your computer and the receiver using serial ports; USB - to establish a connection between your computer and the receiver using USB port; CAN - to establish a connection between your computer and the receiver using CAN ports;

If you plan to use such type of connection in the future, click on Save to Slot 1 button. The connectionsettings will be saved. You can use up to 5 slots to save connection settings.

Note: The number of the slots does not limit the number of receivers that can be connected. The receiversnumber is limited only by the performance of your computer.

To connect to the receiver, click Connect. The result can be seen in the table Last Connections. If yourconnection settings are correct, a new receiver will be added in the navigation bar. Please see below the detailed description of the connection settings window. 12 www.javad.com

Getting Started

Getting Connected

TCP connection

1.2.3. TCP connection

This method is used when you have an existing local area network (LAN) consisting of a group ofcomputers and network communication devices interconnected and a JAVAD GNSS receiver that youwant to place on this LAN. This method is also used to connect a JAVAD GNSS receiver directly to theInternet and access this receiver from a remote PC, connected to the Internet.If the TCP connection will be used, set the following parameters (Figure 1-4):

Figure 1-4. TCP connection settings

Address - Host name or IP address of the receiver; Port - TCP port of the receiver. This is the port on which the receiver listens for telnet-like

connections. The receiver allows up to five simultaneous telnet-like connections. Logical port - one of the five logical port mapping (a, b, c, d, e). If the value is empty, then the

connection is established with the first free logical port; Password - an arbitrary sequence of characters (if you do not want to use any password, you may

simply leave this field blank) SSL/TSL - Enables/disables the encrypting with cryptographic protocols that provide

communications security over the Internet. This parameter should correspond with receiverssettings.

1.2.4. Serial connection

To establish a connection between your computer and the receiver using serial ports, follow these steps:1. Connect one of the available receivers port (usually A) to a communication port on the computer

using a Receiver-to-Computer RS-232 serial cable.2. Supply power to the receiver and computer, then turn them on.

If the serial connection will be used, set the following parameters (Figure 1-5):

Figure 1-5. Serial port connection settings

Port - serial port from a list of the ports available in the system the receiver is connected to; Parity - method for determination of transmission errors; Baud rate - data transfer rate 13www.javad.com

Getting Started

Getting ConnectedUSB connection

Data bits - number of data bits in a symbol; Stop bits - duration of the stop bit; Rts enable - Control Data

1.2.5. USB connection

Before connecting a USB equipped JAVAD GNSS receiver with PCs USB port, make sure that you havethe USB Port option enabled in the receiver and the JAVAD GNSS USB driver installed on the computer.This driver is available on the JAVAD GNSS website: www.javad.com.

Installing Driver

The driver installation procedure varies slightly depending on the operating system used. In general, theinstallation procedure is as follows:

1. Visit the JAVAD GNSS website. Download the USB driver.2. Unpack the archive into a separate, empty folder. 3. Connect the receiver to the computer through the supplied USB cable. Turn the receiver on.4. Windows will automatically detect the new hardware device. Follow the on-screen instructions to

finish installation process.After Windows finishes installing the driver, you will be able to connect the receiver and the computer viaUSB portsIf the USB connection will be used, set the following parameters (Figure 1-6):

Figure 1-6. USB connection settings

Select the required ID from the list. 14 www.javad.com

Getting Started

Getting Connected

CAN connection

1.2.6. CAN connection

Before connecting a CAN equipped JAVAD GNSS receiver with PCs, make sure that you have the CANPort option enabled in the receiver. If the CAN connection will be used, set the following parameters(Figure 1-7):

Figure 1-7. CAN connection settings

Channel - allows selecting channel; Baud rate - data transfer rate;

Connection via CAN allows you to connect multiple receivers, which are in the same CAN network. Inthis case, the incoming (In) and outgoing (Out) identifiers should not overlap the ranges. All devices areone of CAN networks operate at one speed. The software supports only Kvaser (http://kvaser.com)adapters.

1.2.7. Closing NetView

To disconnect from the receiver, click the Disconnect button on the receivers page or just close theapplication to quit NetView (Figure 1-8).

Figure 1-8. Disconnecting15www.javad.com

Getting Started

Getting ConnectedClosing NetView

If the receiver has not been disconnected by the time the program is terminated, the connection will beautomatically broken before NetView is closed.

Note: It is strongly recommended to close the connection with the receiver and close NetView prior to switchingthe receiver off and disconnecting the cable.16 www.javad.com

Chapter 2

OPERATION

NetView allows you to manage and control the GNSS receivers manufactured by JAVAD GNSS, and ithas a user friendly interface.

2.1. Working with the receiver

Connect to the receiver as described in Getting Connected on page 11. Click on the item Receivers onthe navigation bar. The list of connected receivers will appear (Figure 2-1).

Figure 2-1. Connected receiver

In the left pane of the program there is a navigation bar. This pane is arranged as a tree whose nodes canbe expanded by mouse click. Clicking on the elements of the navigation pane on the right pane a pagewith relevant content appears. In this case, the active element remains selected. On the right pane thefollowing information about receiver(s) is displayed:

Green flag Connected indicates that the receiver is now connected and you can work with it; The name of the receiver; Rec - the current files, which are logging; Receivers memory capacity;17www.javad.com

Connection type

Operation

Working with the receiverMeasurements tab

Point the receivers name on the left pane, a tooltip will popup with detailed information about thereceiver will appear. When you click on the name of the receiver, the status page with detailed information for the selectedreceiver will be displayed (Figure 2-2). This page shows the appearance of the receiver, its characteristics,the available connections, table of satellites. Tabs available Sky Plot, Orientation, Options, Settings.To view and upload options of the receiver use the tab Options. To upload a new options file, click onUpload, and select the options file.

Figure 2-2. Information about receiver

Below are described tabs on the right pane.

2.1.1. Measurements tab

Measurements tab (Figure 2-2) displays the basic tracking information (parameters) for the lockedsatellites. It shows the receiver target point current position, receiver coordinates and the time-frequencyparameters describing the behavior of the receivers local oscillator. The various navigation information is displayed, specifically:

Geodetic coordinates1

- Lat, Lon latitude/longitude; - Alt ellipsoidal height.

Velocity 2D (magnitude of the) velocity (m/s). 18 www.javad.com

1. These geodetic coordinates are computed in WGS 84 regardless of the current value of /par/pos/datum/cur.

Operation

Working with the receiver

Measurements tab

Position RMS rms position error1 (m). Velocity RMS rms velocity error* (m/s). PDOP Position dilution of precision. Solution type:

- Standalone/ Code differential/ RTK float / RTK fixed/WAAS DGPS differential Receiver time shows the receivers current time within day. This value is taken from the message

[~~]. For more information about [~~], see the GREIS Reference Manual. Note: Currently the message [~~] reports the time within day in the GPS time scale only.

Receiver date shows the receivers current date as specified in the corresponding [RD] message. Clock offset describes the time derivative of (Tr Trr), where Tr designates the receiver time, Trr

designates the receiver reference time. For more information about Tr and Trr, see the GREISReference Manual. This parameter is obtained from the [DO] message and is expressed in ppm.

Osc. offset is derived from the message [OO] and it is expressed in ppm. The parameter describesthe difference between the VCOs nominal and quiescent frequencies.

Tracking time is the time elapsed since the last complete loss-of-lock event in the receivers C/Achannels as specified in the corresponding [TT] message.

The tracking parameters displayed in table are described below: Table 2-1. Tracking Parameters

Parameter Description

# GPS SV PRN. If the character * is shown next to PRN in the column, this means that almanac data are unavailable for the corresponding satellite. Galileo PRN. SBAS PRN.

Sn GLONASS SV Orbital Slot Number. If the character * is shown next to Sn in the column, this means that almanac data are unavailable for the corresponding satellite.

Fn GLONASS SV Frequency Number.

EL Elevation angle in degrees. The signs + and -immediately following the elevation angles indicate that the corresponding satellites are ascending and descending, respectively. If a satellite is at apogee, it is marked with ^.

AZ Azimuth in degrees

CA Signal-to-noise ratio (C/N0) in the C/A channel [dB*Hz] P1 Signal-to-noise ratio (C/N0) in the P1 channel [dB*Hz] P2 Signal-to-noise ratio (C/N0) in the P2 channel [dB*Hz] TC Time elapsed since the last loss-of-lock in the C/A channel for the corresponding satellite.

This time is given in minutes or, if the symbol : is specified in the column, in seconds.

SS Satellite navigation status. For a complete description of the satellite navigation status structure, see Appendix. If a satellite is not used in position computation, its SS flag will be set to -. Otherwise + will be displayed. 19www.javad.com

1. More precisely, this is the square root of the trace of the position error variance-covariance

Operation

Working with the receiverSky Plot tab

Note: Empty cells will be displayed everywhere in the panels where the corresponding parameters areunavailable.

2.1.2. Sky Plot tab

The Sky Plot tab shows graphic representation of the satellite positions in the sky (Figure 2-3):

Figure 2-3. Sky plot tab

Each concentric circle represents the elevation angle above the horizon. The outermost circle correspondsto 0 degrees above the horizon. The center of the sky plot represents 90 degrees above the horizon. Thedotted circle shows the position computation elevation mask angle.The flags on the right allow the user to select the desired system to be displayed on the right plot.

2.1.3. Options

To view and upload options of the receiver use the tab Options (Figure 2-4 on page 21). Here you cancheck the status of your receivers options and load new Option Authorization Files (OAFs) to thereceiver. This window contains the following information:

Option name a name/description of the option Current shows if the option is in force at the present or not Purchased if the option is purchased or not Leased if the option is leased or not Expiration date the date the leased option will be disabled, if applicable

Since Options can be both purchased and leased, the Current status of the option displays the currentlyeffective value. Option values can be:

---- the firmware version does not support this option or the receiver option is disabled.20 www.javad.com

positive integer the option is enabled with a specified value.

Operation

Working with the receiver

Settings

yes or no the option is either enabled or disabled.To upload a new options file, click on Upload button, and select the options file. Refresh Updates thewindow (Figure 2-4).

Figure 2-4. Options tab

2.1.4. Settings

In the Settings tab you can configure the receiver (Figure 2-5).

Figure 2-5. Settings tab

Set up the receiver name in the Display Name field. Setup the site configuration parameters used in the RINEX-conversion:

Site Name The site identification string (up to 20 alphanumeric characters). Antenna Status This control allows the user to define whether the receiver antenna is in motion

or is motionless. Antenna Height The height of antenna, measured from the survey marker to the measuring21www.javad.com

mark of antenna. The measuring mark is the antenna reference point (ARP) if you use the vertical

Operation

Configuring the ReceiverSettings

height or a known measuring mark (usually antenna edge) on the antenna if you use the slantheight.

Slant Enable this checkbox if you measure the slant height. Otherwise, leave it blank. Antenna Type Select the type of antenna you use.

2.2. Configuring the Receiver

Select the desired receiver in the navigation pane, and expand the elements of the receiver by doubleclicking on the Receiver. Select Parameters item (Figure 2-6).

Figure 2-6. Receiver parameters22 www.javad.com

Operation

Configuring the Receiver

General tab

2.2.1. General tab

The General tab is shown on the Figure 2-7. The general parameters such as elevation mask and antennatype can be specified in this tab, and information about the voltage, temperature, etc. can be checked.

Figure 2-7. General tab

Note: The basic receivers parameters can be changed in the right pane. Symbol * indicates that the parameter was changed, but not accepted by receiver. To accept the changesand save them in receivers memory click Apply.

Note: The tooltip popup menu will appear always when pointing the cursor on the parameter on the right pane.

Elevation mask

In the Elevation Mask for Position Computation edit box, the user enters the minimum elevation (i.e., theelevation mask angle) for the satellites whose data will be output to the current terminal (i.e., the receiverport being used for communication).

Antenna

The Antenna Input list box is used to select the desired antenna type:23www.javad.com

Operation

Configuring the ReceiverGeneral tab

Note: Note that some receiver models are capable of automatically detecting an external antenna only atreceiver start-up time. Therefore, if one wants to switch from the internal antenna to an external one whilein auto, he/she will have to power the receiver off and then back on.

int the internal antenna is being used. ext an external antenna is being used. auto antenna type will detect automatically.

Temperature

The Board temperature indicator shows the receiver boards current temperature in degrees of Celsius.

Power Management

Five group boxes allow the user to adjust/view the power settings for your receiver. Each group boxcontains a set of related controls.

Figure 2-8. Power Management

Battery Charging Mode - enables/disables battery charging mode: Off receiver will not chargethe batteries. Auto receiver will automatically charge batteries.

Enable Power Output - enables/disables power output; Low power mode - turns on/of low power mode; Power Off - turns on/of power; Sleep Mode - enables/disables sleep mode.

Voltages

Figure 2-9. Voltages24 www.javad.com

The External Power Voltage indicator shows the external power supply's voltage.

Operation


TriPad

The Receiver Board Voltage indicator shows what is the actual voltage presented on the receiverboard.

The Battery Voltage indicators show the voltage on batteries. The Charger Output Voltage indicator shows the output voltage of the internal charger during

battery charging. The Output Voltage indicator displays the output voltage on the first pin of each of the receivers

serial port.

2.2.2. TriPad

In this tab (Figure 2-10), the user can configure receiver parameters, which relate to TriPad (user simpleinterface):

Figure 2-10. TriPad tab

File a, File b

In the fields File a, File b can be specified current log-file name, message output period, etc. Current log-file edit box allows the user to specify the prefix of the log file, which will be saved

into receiver memory during survey. In the Output Epochs Counter box the number of outputted epochs is shown.25www.javad.com

Operation

Configuring the ReceiverTriPad

In the Implicit Message Output Period edit box the output period for the implicit messages can bespecified. This parameter specifies the interval of outputting messages into the log-file when datalogging is activated with the TriPad or through the AFRM.

Elevation Mask for Measurements Output (the minimum elevation angle for the satellites whosedata will be put in the receiver files logged when pressing FN).

Satellites Number Mask for Position computation - Satellites with elevations lower than this maskwill be excluded from position computation.

File Name Prefix - this setting specifies what prefix will be added to the names of the receiver filescreated via MinPad, (i.e., by pressing FN). The prefix can be up to 20 characters long. Default islog.

Enable Implicit Management of Specific - enables/disables the management of Implicit MessageOutput Period.

Function Key

TriPad Funnybone Action - This drop-down list box is used to program how the receiver willreact to clicking FN (i.e., keeping the button depressed for less than one (1) second). In led blinkmode switch mode, clicking FN will toggle between the TriPads standard and extendedinformation modes. In occupation mode switch you click FN to get the receiver to insert into thecorresponding log file a message indicating that the occupation type has been changed from staticto kinematic, or vice versa.

Turn Data Recording on at Startup - enables/disables data recording on at startup, Initial Dynamic Mode - specifies the starting occupation type descriptor that will be inserted at the

beginning of each receiver files logged via the TriPad. You select static and kinematic to specifythat the corresponding log file will start with a static and kinematic occupation, respectively.

Appending data to a specific file - If the new receiver data are to be appended to an existing logfile, enter the desired filename in the Always append to the file edit box. The setting can be up totwenty characters long.

Toggle Automatic Rotation Mode - enables/disables Automatic File Rotation Mode.26 www.javad.com

Operation


TriPad

Automatic File Rotation Mode (AFRM) parameters

Figure 2-11. AFRM parameters

Period specifies the time duration of each of the multiple log files created in AFRM mode. Phase specifies the phase (i.e., constant time shift) of the multiple log files created in AFRM

mode. Files (total) specifies how many multiple log files must be created in AFRM until this mode

automatically turns off. Zero means that an unlimited number of log files will be created. Files (remain) shows you how many log files are left for the receiver to create in AFRM. Enable Oldest Log-file removal if active, the receiver will remove the least recent files if no free

space is available in the receiver memory to record the current file.27www.javad.com

Operation

Configuring the ReceiverPositioning

2.2.3. Positioning

This tab contains various controls and fields that allow the user to set elevation and PDOP masks, toselect satellites to track, and to specify what measurements to use in position computation.

Figure 2-12. Positioning tab

Enable Solutions

Position Computation Mode - this drop-down list box allows selecting the mode of positioncomputation:

pd -carrier phase differential (RTK) with fixed ambiguities pf - carrier phase differential (RTK) with float ambiguities cd- code differential (DGPS) mode wd - wide area code differential mode (WDGPS) sp - single point positioning mode1

If the Enable Code Differential Position is activated and the rover receiver is running in RTK Floator RTK Fixed mode and is unable to obtain an RTK solution at the current epoch, it will output thecurrent code differential position for the unavailable RTK solution.28 www.javad.com

1. Also known as absolute positioning, stand-alone positioning or simply point positioning

Operation


Positioning

Note: If the DGPS (Code Differential) checkbox is enabled and a DGPS solution cannot be obtained, you caninstruct the receiver to output single-point position for the unavailable differential. For this, enable theStandalone checkbox.

Note: Code differential mode requires broadcasting the corresponding DGPS (not RTK) messages from thereference receiver and accepting them on the rover receiver. If any of these requirements are not met, thenenabling the DGPS (Code Differential) checkbox will not have any effect.

Positioning Masks

Figure 2-13. Position Masks

In the Elevation mask edit box, you specify the elevation mask angle for the satellites used inposition computation. The receiver will not use the satellites below the specified elevation mask tocompute the position. The default value is 5 degrees.

In the PDOP mask edit box, you specify the threshold value of PDOP that disables positioncomputation. If PDOP exceeds this mask during a period of time, the receiver's position will notbe computed over the corresponding epochs. The default value is 30.

Positioning Systems

Select the GPS, GLONASS, Galileo, and SBAS checkboxes if it is desired that the corresponding satelliteconstellations to be used in position computation.

Note: However, the selected satellite constellation will indeed be used in position computation only if the correspondingSatellites used in pos. checkbox from the Satellite management panel is selected as well.29www.javad.com

Operation


Satellite Management

Figure 2-14. Satellite Management

GPS | GLONASS | GALILEO | SBAS

Use these tabs to explicitly specify which of the GPS, GLONASS, Galileo and SBAS satellites areenabled for tracking and position computation.

The first tab, as its name implies, deals with the GPS satellites (Figure 2-15).Figure 2-15. GPS tab

The tab displays the following columns, prn, lock and use, which are described in Table 2-2.Table 2-2. Description of Data Displayed in the GPS Tab

Use the All to lock and All to use buttons to select all GPS satellites at one time.Use the None to lock and None to use buttons to deselect all GPS satellites at one time.

The second tab, as its name implies, deals with the GLONASS satellites.

Satellite Numbering

For user convenience, GLONASS satellites can be displayed ordered either by their Frequency ChannelNumber or by the Slot Number. The tab displays columns, fcn/sat, lock and use, which are described inTable 2-3.

Notation Meaning

prn GPS satellites pseudo-random noise code numbers.

lock Checkmarks in this column indicate that the corresponding satellites are enabled for tracking.

use Checkmarks in this column indicate that the corresponding satellites are enabled for position computation. 30 www.javad.com

Operation


Positioning

Table 2-3. Description of Data Displayed in the GLONASS Tab

Use the All to lock and All to use buttons to select all GLONASS satellites at one time.Use the None to lock and None to use buttons to deselect all GLONASS satellites at one time.

The third tab, as its name implies, deals with the GALILEO satellites.The tab displays columns, prn/sat, lock and use, which are described in Table 2-4.

Table 2-4. Description of Data Displayed in the GALILEO Tab

Use the All to lock and All to use buttons to select all GALILEO satellites at one time.Use the None to lock and None to use buttons to deselect all GALILEO satellites at one time.

The fourth tab, as its name implies, deals with the WAAS/EGNOS satellites.A WAAS-enabled JAVAD GNSS receiver allows simultaneous tracking of two WAAS satellites.Either of the WAAS satellites is allocated its own channel. Use the All to lock and All to use buttons to select all SBAS satellites at one time.

Use the None to lock and None to use buttons to deselect all SBAS satellites at one time.

Notation Meaning

fcn/sat GLONASS satellites frequency channel numbers, if the Frequency Channel Number checkbox is selected. GLONASS satellites slot numbers, if the Slot Number checkbox is enabled.

lock Enable GLONASS satellites for tracking.

use Use this GLONASS satellite for position computation.

Notation Meaning

prn GALILEO satellites pseudo-random noise code numbers.

lock Checkmarks in this column indicate that the corresponding satellites are enabled for tracking.

use Checkmarks in this column indicate that the corresponding satellites are enabled for position computation. 31www.javad.com

Operation


Measurements Used

This radio button group shows what code measurements will be used to compute the receiver's standaloneposition. This parameter applies only to absolute position computation.

Figure 2-16. Measurements Used

Note: For a single-frequency receiver, the radio buttons P/L1, P/L2 and Iono-Free will be gray.

If the Iono-Correction checkbox is selected, the receiver will correct the pseudoranges for ionosphere(based on the model defined in ICD-GPS-200, Revision C) before using them in position computation.Note that if both Iono-Free and Iono-Correction are selected, the first overrides the second. Thisparameter applies only to absolute position computation.If the Tropo-Correction checkbox is selected, the pseudoranges will be corrected for troposphere beforebeing used in position computation. This parameter applies only to absolute position computation.

RAIM

Figure 2-17. RAIM

RAIM stands for Receiver Autonomous Integrity Monitoring. When this feature is enabled, the receivercontinuously checks whether the signals received from satellites are usable or not. If a fault (measurementoutlier) in satellite data has been detected based on the current alarm limit, RAIM excludes thissatellite(s) from the positioning calculations, thereby allowing the receiver to continue providing correctposition information without an interruption in the service.

The RAIM Mode if turned on, activates the RAIM algorithm. With the Alarm setting, the user specifies alarm limit mode. The alarm limit is a threshold value

for the horizontal radial error. There are three pre-defined limits and one that is specifiedmanually:

Non-precision stands for Non-precision approach. For this phase of flight, the alarm limit is equalto 0.3 nmi. This value means that an error of 0.3 nmi or greater, caused by bad satellite data, willbe detected by RAIM.

Terminal. For this phase of flight, the alarm limit is 1.0 nmi. En route. For this phase of flight, the alarm limit is 2.0 nmi. Manual. This mode allows the user to select alarm limit values other than the pre-defined ones.32 www.javad.com

Operation


Positioning

The Alarm limit for Manual Mode edit box is available only if one has selected the Manual modefrom the Alarm list box. Values the user enters in this edit box can vary within the range10.010000.0 meters. The default value is 555.6 and it corresponds to Non-precision approach.

Datum

Figure 2-18. Datum

From the Current Datum for Position Computation drop-down list box, you select the datum used inposition computation. Once the desired datum is selected and the Apply button is pressed, the receiverbegins producing its position expressed in the selected datum. The default datum is WGS 84.

Note: Currently JAVAD GNSS receivers support more than 200 datums. For a list of the supported datums, referto the GREIS Reference Manual.

Note: The receiver position, which is expressed in a datum other than WGS 84, may be viewed using NMEAmessages such as GGA, GLL and so on. Position-related JAVAD GNSS messages (for example [PV])always contain the coordinates computed in WGS 84.33www.javad.com

Operation

Configuring the ReceiverBase

2.2.4. Base

With the Base tab, the user can configure the receiver for use as a reference station (Figure 2-19).

Figure 2-19. Base

In the Reference Position area (Figure 2-20) the user enters the geodetic coordinates of the base antennasphase center.

Figure 2-20. Reference Position area

Lat Antenna latitude in degrees, minutes, and seconds format with a hemisphere letter (N or S). Lon Antenna longitude in degrees, minutes, and seconds format with a hemisphere letter (E or

W).34 www.javad.com

Alt Antenna height above the ellipsoid, in meters.

Operation


Base

Note: The reference geodetic coordinates specified in this tab will relate to the antenna L1 phase center. Toaccount for the offset between the L1 and L2 antenna phase centers, use the parameter L1 to L2 AntennaPhase Center offsets.

Note: If the coordinates entered are expressed in a datum other than WGS 84, which is default, ensure that thecorrect datum ID is selected.

There are three ways to enter the coordinates:1. Type in the precise latitude/longitude and ell. height manually (use the Lat, Lon and Alt edit

boxes).2. Use the absolute coordinates averaged over the specified time interval (with the Averaged and

Avg.Span controls).3. Use the instant absolute coordinates from the receiver (by pressing the Get from receiver button).

L1 to L2 Antenna Phase Center offsets

Use these fields if you need to account for the difference between the L1 and L2 antenna phase offsets.

Figure 2-21. L1 to L2 Antenna Phase Center offsets

RTCM Settings

The Station ID edit box allows the user to assign a separate station ID to each reference station working inthe area. On the rover side, this ID allows easy identification of the reference station whose RTCMmessages are being received by the rover receiver. This ID must be an integer from 0 (default) to 1023.With the Max. number of Satellites edit box, the user specifies the maximum number of satellites allowedfor use in RTCM messages types 18 through 21. A 0 means that all of the available satellites will beincluded in the above mentioned RTCM message types. If an RTK system has a slow modem (the baudrate is less than 9600 bps), it is recommended to restrict the number of satellites included in thesemessages. The limitation allows the user to reduce the amount of data sent by the base station, whichhelps to avoid the data link overload. If the actual number of satellites in sight exceeds the value enteredin this edit box, the RTCM messages will include data only from the satellites with higher elevations andthe number of satellites included in the RTCM messages will not be greater than that specified in the editbox.The Health list box is intended to define the reference station status:

Good station is operating normally. Bad station is not working normally. Unknown station health status is unknown.35www.javad.com

Operation

Configuring the ReceiverBase

With the Measurements Sent radio buttons, the user specifies the measurement types that will be includedinto the RTCM message types 18 through 21. Currently, the mentioned RTCM messages always containC/A measurements. The user can also include either or both P/L1 data and P/L2 data in these messages(on condition that the JAVAD GNSS receiver is configured as a dual-frequency unit).The GPS and GLONASS checkboxes, which are grouped together within the System Used area, indicatethe satellite constellations included in the RTCM message types 18, 19, 20 and 21.If the Pseudo-range smoothing checkbox is selected, the receiver will use smoothed pseudoranges in theRTCM message types 19 through 21.

CMR Settings

With the Station ID the user can specify the base station ID, which will be included into the CMRmessages transmitted by this base station. On the rover side, this ID allows easy identification of thereference station whose CMR messages are being received by the rover receiver. This ID must be aninteger from 0 (default) to 31.The Motion list box characterizes the motion of the reference station:

Unknown the motion state is undetermined. Static the receiver is motionless. Kinematic the receiver is in motion.

Use the Short ID, COGO and Long ID to include the reference station's point feature code1 into CMRmessage type 2.The CA/L1, P/L1 radio buttons and the P/L2 checkbox, which are grouped within the Measurements Sentarea, allow the user to specify which measurement types will be included into the corresponding CMRmessages broadcasted by the reference station. If the receiver is a single-frequency unit, the P/L1 and P/L2 controls will not be available.The GLONASS message spin box allows the user to specify which message types will be associated withGLONASS measurements. You can choose any unused message types between 3 and 7.36 www.javad.com

1. Feature code is an alphanumeric code used to describe an object to be surveyed.

Operation


Rover

2.2.5. Rover

In this tab, the user can configure a receiver as a rover station.

Figure 2-22. Rover tab

DGPS Parameters

Corrections usage Source of DGPS Corrections - serves to specify the source (port) from which the receiver will use

differential corrections for position computation: Best - If the Best radio button is selected, the receiver will use differential corrections that

correspond to the most precise of the obtained position estimates. Best means that the solutionhas the least RMS error.

Nearest - If this radio button is selected, the rover will use differential corrections transmitted bythe nearest reference station.

Any -The rover will use all available differential corrections. User - If this radio button is selected, the rover will use differential corrections from the user

defined source In the Maximum age of DGPS Corrections edit box, the user can set the maximum age (in

seconds) of the code differential corrections used for position computation. It must be an integervalue between 1 and 1200. The default is 30. If the age of the corrections exceeds the value37www.javad.com

specified in this edit box, the rover will compute a stand-alone position.

Operation

Configuring the ReceiverRover

Use the Maximum age of Iono Corrections edit box to specify the maximum age (in seconds) ofthe ionosphere corrections used for position computation.If you set the Ionosphere-free DGPS Corrections checkbox to on, the rover receiver will use inposition computation both the ionosphere corrections from RTCM message type 15 and differen-tial corrections from RTCM message types 1 and 31 (or 9 and 34).

RTK Parameters

The RTK position Computation Mode drop-down list box serves to toggle between the extrapolation anddelay modes. If Extrapolation is selected, the rover will extrapolate the base station's carrier phasemeasurements when computing the rover's current RTK position. If Delay is selected, the rover will notextrapolate the base station's carrier phase measurements to compute the current rover position. Instead,the RTK engine will compute either a delayed RTK position (for the epoch to which the newly receivedRTCM/CMR message corresponds) or the current stand-alone position (while waiting for new RTCM/CMR messages coming from the base).

Figure 2-23. RTK Parameters

The Confidence Level for Ambiguity Fixing list box governs the process of the RTK engine fixing integerambiguities. The RTK engine uses the ambiguity fix indicator when making a decision whether to fixambiguities or not. Low, Medium and High correspond to the indicator's 95%, 99.5% and 99.9% states,respectively. The higher the specified confidence level, the longer the integer ambiguity search time. Thisis the price one pays for the higher reliability of the ambiguity fixed solution.The Use Measurements for RTK list boxes allow the user to select measurement types used by the roverfor position computation.In the Update Interval od RTK Preference list box the user can set the differential correction updateinterval. It should be noted here that for a proper rover setup in RTK Delay mode the user should knowthe exact rate at which the reference station broadcasts its differential correction data.

Note: The receiver will use the Base Corrections period control only if it runs in Delay mode. Also, this edit boxis used to provide more reliable synchronization between the base station and rover.38 www.javad.com

Operation


Rover

RTK Heading Parameters

This field is used for setting up the heading parameters.The Heading Mode drop-down list box serves to toggle between the extrapolation and delay modes. IfExtrapolation is selected, the rover will extrapolate the base station's carrier phase measurements whencomputing the rover's current RTK position. If Delay is selected, the rover will not extrapolate the basestation's carrier phase measurements to compute the current rover position.

Figure 2-24. RTK Heading Parameters

The Use Fixed Baseline Length drop-down list box to toggle between the sets of carrier phase differentialdata received from the reference station:

last RTK engine will process the last set of carrier phase differential data received from thereference station.

every RTK engine will attempt to process all sets of carrier phase differential data sequentiallyreceived from the reference station.

Attitude Parameters

This field is used for setting up the attitude parameters: mode, pitch, roll, heading offset, etc.

Figure 2-25. Attitude Parameters39www.javad.com

Operation

Configuring the ReceiverPorts

2.2.6. Ports

The Ports tab, as shown in Figure 2-26, comprises different sections that are reached via the subtabs:

Figure 2-26. Ports tab

Serial Used to specify the data the receiver serial ports will transmit/receive. See Serial onpage 40.

USB Used to specify the data the receiver USB port will transmit/receive. See USB on page42.

Bluetooth - Used to specify the data the receiver Bluetooth port will transmit/receive. SeeBluetooth on page 42.

TCP Used to specify the data the receiver will transmit/receive over TCP/IP network. SeeTCP on page 42.

CAN Used to specify the parameters of the CAN port(s). See CAN on page 43.

Serial

Use this subtab to adjust the settings for serial ports A, B, C and D (Figure 2-26). The Input Mode list box allows the user to specify what type of data to input on the selected port.

cmd- command mode. Being in this mode, the receiver's port recognizes GREIS commands sentby the user.

echo - echo mode. jps- GREIS input mode. In this mode receiver is capable to recognize both standard and non-

standard GREIS messages. rtcm - RTCM 2.x input mode. rtcm3 - RTCM 3.x input mode. In this mode the receiver recognizes and decodes the RTCM 3.x

messages received through the corresponding port.40 www.javad.com

Operation


Ports

cmr - CMR/CMR+ input mode. For more information on CMR format, please refer to ftp://ftp.trimble.com/pub/survey/cmr.

omni - unsupported. none - means that the port will ignore any incoming data. dtp - the port is currently attached to the Data Transfer Protocol (DTP), so all the input goes there.

This mode could be set only by the get GREIS command. The mode will return to cmd as soon asDTP terminates.

term - the PPP data link is currently established over this port, so all the input goes there. Thismode could be set only implicitly by the PPP stack. When parameter is implicitly set to this mode,attempts to change the mode will fail.

The Output list box allows the user to specify what type of data to output on the selected port. None The port outputs nothing. DGPS RTCM {1,31,3} The port outputs RTCM message types 1, 31,3. DGPS RTCM {9,34,3} The port outputs RTCM message types 9, 34, and 3. RTK RTCM {18,19,22,3} The port outputs RTCM message types 18, 19, 22, and 3. RTK RTCM {20,21,22,3} The port outputs RTCM message types 20, 21, 22, and 3. RTK RTCM {20,21,22,23,24} The port outputs RTCM message types 20, 21,22, 23, 24. RTK RTCM3 GD min The port outputs RTCM 3.0 message types GD min. RTK RTCM3 GD full The port outputs RTCM 3.0 message types GD full. RTK RTCM3 GGD min The port outputs RTCM 3.0 message types GGD min. RTK RTCM3 GGD full The port outputs RTCM 3.0 message types GGD full. RTK CMR {10,0,1} The port outputs CMR message types 10, 0, 1. RTK CMR+ {10,0,9} The port outputs CMR+ message types 10, 0, 9. RTK JPS min The port outputs JPS messages. RTK JPS max The port outputs JPS messages. User Defined The port outputs data specified by the user. It means that the user defined an

arbitrary message set that will be outputted through the port.In the Period edit box, the user sets the message output interval (in seconds).

Note: It is worth noting, however, that the period of RTCM messages types 22, 3 and CMR message type 1cannot be changed with this edit box. The default period for the mentioned messages is 10 seconds. If theuser wants to change the period, he/she should use the em command from the Manual Mode window. Formore details on em refer to the GREIS Reference Manual.

To set the baud rate for the corresponding receiver port, use the Baud rate list box.The checkbox RTS/CTS enables/disables hardware handshaking for the port.41www.javad.com

Operation

Configuring the ReceiverPorts

USB

This subtab contains settings that allow the user to specify what type of data to input/output on the USBport (Figure 2-27). These settings are the same as those in the Serial subtab.

Figure 2-27. USB tab

Bluetooth

This subtab contains settings that allow the user to specify what type of data to input/output on theBluetooth port (Figure 2-28). These settings are the same as those in the Serial subtab. For moreinformation, refer to Serial on page 40.

Figure 2-28. Bluetooth tab

Additionally here can be checked and/or specified hardware settings such as Bluetooth FCC ID, IC,Bluetooth mode (on/off), Bluetooth name, and PIN code.

TCP

Note: The settings on this subtab are only available if a connected receiver has the Ethernet capability.42 www.javad.com

Operation


Ports

With this subtab, the user specifies what type of data to input/output over the corresponding TCP/IPstream (Figure 2-29). These settings are the same as those in the Serial subtab. For more information,refer to Serial on page 40.

Figure 2-29. TCP tab

CAN

Note: The settings on this subtab are only available if a connected receiver has the CAN port(s).With this subtab, the user specifies what type of data to input over the corresponding CAN port (Figure 2-30). These settings are the same as those in the Serial subtab. For more information, refer to Serial onpage 40.

Figure 2-30. CAN tab43www.javad.com

Operation

Configuring the ReceiverNetworking Tab

2.2.7. Networking Tab

This tab is used to review and configure the networking parameters.

Figure 2-31. Networking

LAN

A local area network (LAN) supplies networking capability to a group of computers in close proximity toeach other. A LAN is useful for sharing resources like files, printers, games or other applications. This taballows the user ti set up the LAN parameters (Figure 2-31): Receiver IP address, gateway, network mask,MAC Address, etc.

Note: Contact your system administrator to obtain these values.

WLAN

A wireless local area network (WLAN) links two or more devices using some wireless distributionmethod (typically spread-spectrum or OFDM radio), and usually providing a connection through anaccess point to the wider internet. This gives users the mobility to move around within a local coveragearea and still be connected to the network.44 www.javad.com

Operation


Networking Tab

This tab allows the user ti set up the LAN parameters (Figure 2-32):

Figure 2-32. WLAN

Note: Contact your system administrator to obtain these values.

Server

This tab allows the user ti set up the parameters for remote receiver control via TCP/FTP connection.

Figure 2-33. Server subtab

Client

The Transmission Control Protocol (TCP) is one of the core protocols of the Internet Protocol Suite. TCPis one of the two original components of the suite, complementing the Internet Protocol (IP), andtherefore the entire suite is commonly referred to as TCP/IP.45www.javad.com

Operation


TCP client mode can be configured using this subtab.

Figure 2-34. Client subtab

TCP Client Mode - allows the user selecting any of the following mode: NTRIP, RCV, etc.; TCP Client connection State - shows the connection status; Timeout - shows TCP connection timeout; Error - TCP error messages.

PPP

This subtab allows user to set up the Point-to-Point protocol parameters:

Figure 2-35. PPP subtab

The Point-to-Point Protocol, or PPP, is commonly used to establish a direct connection between twonodes.

Note: Information of PPP parameters is given by Internet service provider.46 www.javad.com

Operation


Networking Tab

GPRS

This tab allows user to setup all necessary GPRS settings:

Figure 2-36. GPRS subtab

It is necessary to set the dial number, user name and password, access point name and PDP contextidentifier to establish a GPRS connection.

Note: This information is given by cell provider.

AT details area is designed for advanced users for finest GPRS tuning. By default, all the settings have thezero value.

Note: We recommend that you do not send any AT commands to the GSM modem before acquire goodknowledge of the GPRS parameters.47www.javad.com

Operation


GSM

This subtab is used to review and configure the GSM module parameters:

Figure 2-37. GSM subtab

Mode drop-down list box allows user to select and setup the GSM modem mode: OFF means GSM modem is inactive. To change modems modes user has to set modems mode

firstly to OFF and press Apply button, then select and setup the necessary mode from the list. OFFmode means modems hardware reset.

Slave means registered in GSM network modem is waiting an incoming call to send a data. TheSlave mode is required modem mode for the receiver configured as a base.

Master means registered in GSM network modem is dialing up and establishing connection withother modem, using dial number. If the established connection is interrupted, modem dial up andconnect anew. The Master mode is required mode for the receiver configured as a rover.

PIN Code box allows the user to enter the Personal Identification Number (PIN) of its SIM-card.The Dial number edit box allows the user to set/display a dial number, the phone number of the slavemodem to be dialed in to. The number you can insert is a string comprising up to 14 a/n characters.

Note: Mandatory only when running the GSM modem in master mode.

The Send Time Out edit box allows the user to set/display a time interval of the service word. The transmitmodem will send the service word to the receive modem in every N seconds, where N is a time interval inseconds from 0 to 255. 0 stands for disabled.

Note: If the receiver has not received any data from the modem for designated seconds, the modem will bedisconnected and then re-initialized.

In the Service Word Repeat Period edit box is possible to set/display a time interval of the service word.The receive modem will receive the service word from transmit modem in every N seconds, where N is atime interval in seconds from 0 to 255. 0 stands for disabled. 48 www.javad.com

Operation


Networking Tab

Note: To ensure reliable and secure modem communication, the Receive Time Out value must be always largerthen the period of transmitting differential corrections. Also, care should be taken that the time interval inReceive Time Out box is greater than the service word repeat period by 2 to 3 seconds.

UHF

This subtab is used to review and configure the UHF modem parameters (Figure 2-38):

Figure 2-38. UHF subtab

Modem Mode - Turns on/off UHF modem; UHF Modem Frequency - the user can set the necessary frequency; UHF Protocol Type - allows selecting protocol type:

Simplex Receiver - This mode is used for JAVAD GNSS internal/external modem on rover sidewhen the base receiver is equipped with JAVAD GNSS internal/external modem.

Simplex Transmitter - This mode is used for JAVAD GNSS internal/external modem on base sidewhen the rover receiver is equipped with JAVAD GNSS internal/external modem.

Simplex Transmitter to Repeater - means the modem is enabled for transmission data from thebase receiver equipped with JAVAD GNSS internal/external modem to the Repeater.

Simplex Repeater - JAVAD GNSS internal/external modem enabled as repeater, with no databeing passed to the local communications port.

TRMB Receiver (only GMSK) - This mode is used for JAVAD GNSS internal/external modem onrover side when the base receiver is equipped with Trimble internal/external modem.

TRMB Transmitter (only GMSK) - This mode is used for JAVAD GNSS internal/external modemon base side when the rover receiver is equipped with Trimble internal/external modem.

Transparent w/EOT Receiver (only GMSK) - This mode is used for JAVAD GNSS internal/external modem on rover side when the base receiver is equipped with Pacific Crest PDL modem.

Transparent w/EOT Transmitter (only GMSK) - This mode is used for JAVAD GNSS internal/external modem on base side when the rover is equipped with Pacific Crest PDL modem.

STL Receiver (only 4FSK) - This mode is used for JAVAD GNSS internal/external modem onbase side when the rover receiver is equipped with Satel modem (model SATELLINE-3AS).

STL Transmitter (only 4FSK) - This mode is used for JAVAD GNSS internal/external modem on49www.javad.com

rover side when the base receiver is equipped with Satel modem (model SATELLINE-3AS).

Operation


UHF Modem Output power - This edit box allows the user to set/query the output power valuefrom 0.03W to 1W.

Forward Error corrections - allows the receiving modem to correct burst and single bit errors in theincoming data stream. When enabled, an additional 4 bits per byte of data is transferred over the RF link.This effectively reduces the data throughput in proportion to the overhead bytes. Leave FEC enabledunless the data throughput requirements make the overhead unacceptable.Scrambling - Enable or disable data scrambling. Select the Scrambling check box if you want data to bescrambled. Otherwise, keep it clear. For optimal operation of the GMSK modulation, data should bescrambled. When enabled, the radio modem scrambles and unscrambles the data on transmission orreception via an exclusive-OR operation with a pseudo-random bit stream. Do not disable scramblingunless the DTE performs data scrambling and produces a data stream with approximately the samenumber of 1's and 0's. Use the Apply button to accept the changes you have made in the tab.

FH

This subtab is used to review and configure the FH modem parameters:

Figure 2-39. FH subtab50 www.javad.com

Operation


Event Tab

2.2.8. Event Tab

This tab is used to review and configure the 1PPS signal and Event marker settings.

Figure 2-40. Event tab

The Enable PPS Generation list boxes (for PPS a and PPS b) enable the receiver to generate 1PPS signalsand also allows the user to modify the settings related to the selected 1PPS signal.The PPS Reference Time list box allows the user to select the reference time that the 1PPS signal will besynchronized with. There are four available reference time scales:

GPS means GPS system time. GLO means GLONASS system time. UTCus means UTC(USNO). UTCsu means UTC(SU).

If the user has selected the Tie PPS to its Reference Time, the receiver will synchronize the 1PPS signalwith the chosen reference time. Otherwise, 1PPS will be synchronized either with the receiver's internalclock or with an external reference frequency applied to the receiver.The PPS Period edit box determines the rate of generating the 1PPS signals via the corresponding outputconnector.

The user can determine millisecond and nanosecond parts of PPS signal offsets with respect to theselected reference time grid using the Milliseconds of PPS Offset list box for millisecond part andNanoseconds of PPS Offset for nanosecond part.With the Period of Marked PPS Pulses edit box, the user specifies the period of the marked 1PPS signal.Using the Length of Marked PPS Pulses the user synchronizes the edge (rising or falling) of the 1PPS51www.javad.com

signal with the specified reference time.

Operation

Configuring the ReceiverAdvanced

In order to enable or adjust the event input function, use the controls described below.In the Synchronize Receiver Clock with... list box, the user specifies that the receiver executes a one-timesynchronization of its one-millisecond cycle grid with the corresponding edge of the event signal.The Status of Receiver Clock indicator shows whether the receiver clock is actually being synchronizedwith the event signals or not. If you see on in the field, it means the synchronization has been donesuccessfully.The Rise and Fall values of Event Reference Edge serve to measure the time of either the rising edge orfalling edge of the input event signal.

2.2.9. AdvancedWarning: Only change these advanced settings when it is known what they mean. Unsuitable changes to these subtabs

can cause the receiver to run improperly. If you are doubtful of any changes you made to these subtabs, clickthe Set all parameters to defaults button to get the factory default settings back. For a description of thesesubtabs, refer to the corresponding paragraphs below.

Figure 2-41. Advanced tab52 www.javad.com

Operation


Advanced

Anti-Interference

With the Anti-Interference radio button group (Figure 2-42), the user enables mode allowing the JAVADGNSS receivers to suppress the impact of narrow-band interferences.

Figure 2-42. Anti-Interference subtab

The user can assess the presence of interference based on the following information: When the number of tracked satellites is fewer (by 2 or greater) than the number of satellites in

view. When the signal-to-noise ratio (C/N0) in the C/A channel for the satellites having elevations

above 30 degrees does not exceed 40 dB/Hz. When the information about interferences indicates that Jamming Suppressor detected

interference signals within the specified band and also the strength of aggregate in-bandinterference is characterized as high or hard. This information you can obtain with the commandem,,jps/JI.

Multipath Reduction

The list boxes CA/L1 Carrier Phase Multipath Reduction and CA/L1 Carrier Multipath Reduction areused for mitigation of the multipath phenomenon (Figure 2-43).

Figure 2-43. Multipath Reduction subtab

When the reference station and rover station run in DGPS mode and they are not free from the impact ofmultipath, we recommend that you select the Code multipath reduction checkbox for both the referenceand rover stations.

Note: If you use a pair of receivers in RTK mode, you can additionally select the checkbox Carrier multipath53www.javad.com

reduction for both receivers.

Operation


Loop Management

In this subtab the user can configure the settings that deal with the receiver capability of searching,acquiring and tracking the GPS+ satellite signals (Figure 2-44).Warning: Care should be taken when changing the settings for this subtab. JAVAD GNSS recommends that users do not

change these settings without good reason.

Figure 2-44. Loop Management subtab

The CA/L1 CLL Bandwidth edit box governs the noise bandwidth of the guiding phase lock loops. In thisbox, you can enter values between 2 and 50 Hz.With the CA/L1 CCL Order edit box, the user can toggle guiding and common lock loop order between 2and 3. Care should be taken when using a 2nd order PLL because this can adversely affect satellite signaltracking in some cases.The Strong Loops CCL Bandwidth edit box governs all of the guided loops but the C/A DLLs. Here theuser can enter values between 0.1 Hz and 10 Hz.The C/A code guided loop bandwidth edit box specifies the bandwidth of the receiver's C/A group delaylock loop. In this box, one can enter the values between 0.1 Hz and 50 Hz.With the Enable Adaptive Guided Loops checkbox, the user enables/disables the use of adaptive guidedloops. If the user selects the checkbox, the receiver will adjust the guided loops bandwidths depending onthe actual strengths of the signals tracked. The weaker the signals, the narrower the bandwidths.With the Enable P/L1 and P/L2 tracking checkbox the user can adjust tracking settings for the receiver. Ifone has either a single-frequency receiver or L1 only antenna, it is recommended to disable tracking ofthe P/L1 and P/L2 signals.

Note: Enable the Static Mode parameter only if the receiver antenna is completely stationary. If your receiverantenna may have some movement, even for a few millimeters, disable the Static Mode parameter.Moving the antenna while in Static Mode may result in a loss of lock to satellites.

The Bandwidth of individual PLL and Bandwidth of common PLL edit boxes mean exactly what their54 www.javad.com

names imply.

Operation


Advanced

Select the Enable L2 common loop checkbox to avoid the loss of L2 phase tracking in dynamicapplications due to antenna rotation around its axis.

External Frequency

The settings on this subtab, allow the operator to configure the use of reference frequency (Figure 2-45).It may be either a high-stability external frequency or the receivers internal crystal oscillator.

Figure 2-45. External Frequency tab

With the controls in the group, the user specifies the reference frequency input that the receiver will use: Internal means the receiver uses the internal oscillator. External means the receiver uses an external frequency.

Note: By switching from Internal to External and vice versa may result in a temporary loss of lock to satellites.

External Frequency Source ParametersWith the Ext. frequency value edit box the user specifies nominal external frequency value. Here the usercan enter the integer values between 2 and 40 MHz. The default value is 10 MHz.The Ext. frequency source status field shows whether the external frequency is being used or not:

off Indicates that the receiver is using the internal crystal oscillator. wait Indicates that the receiver is waiting for the external frequency lock. More precisely, this

value will be returned in the following three cases:If the external frequency oscillator is disconnectedIf the amplitude of input signal is too lowIf the actual external frequency is different from that specified in the Ext. frequency value editbox

locked Indicates that the receiver is using the external frequency.With the Ext. freq. signal amplitude field the user can estimate the external frequency signal amplitude:55www.javad.com

off Indicates that the internal oscillator is actually being used.

Operation


low Indicates that the external frequency signal's amplitude is lower than needed. ok Indicates that the external frequency signal's amplitude meets the specs.

The Oscillator Offset Reduction group box allows the user to govern the behavior of the internal crystaloscillator.

The Off radio button means that the oscillator frequency offset reduction mode is turned off. The Freq. Locked radio button means that the receiver will adjust the internal oscillator's

frequency until the measured frequency offset is reduced to zero. By using the incoming satellitesignals, the receiver will force the internal oscillator to generate a very stable 20 MHz frequencysignal. This frequency output is available via the corresponding receiver output pin.

Note: The user is able to monitor the offset reduction in the Clock offset field of the GEO tab. After selectingFreq. Locked the value in Clock offset starts to reduce and soon (usually in a few minutes) it will becomeequal to zero, while in contrast Osc. Offset will not change much.

The Freq. and Time Locked radio button means that the receiver will adjust both the internal oscillator'sfrequency until the measured frequency offset is reduced to zero and the internal clock until it gets fullysynchronized with the specified reference time scale.

Note: Switching from Freq. Locked or Freq. and Time Locked to Off may result in a temporary loss of lock tosatellites.

Freq. Locked guarantees that the receiver's 20 MHz output will have long-term stability, not necessarilyshort-term stability. However, there is a way to assure that both of these characteristics will be goodenough. It can be done by selecting Enable Common tracking on the Loops Management subtab.

Raw Data Management

This subtab, which is shown in Figure 2-46, contains the controls for specifying the frequency at whichthe receiver will update raw measurement and position. Also, the user may set up the controls that affectthe signal processing.

Figure 2-46. Raw Data Management tab56 www.javad.com

Operation


Advanced

The Measurements Update Rate group allows the user to determine the raw data update period. In theUpdate Rate edit box, enter a value (in milliseconds) to specify the period. With Effective MeasurementsUpdate Rate, the user can check which period is actually being used by the receiver.The Position Update Rate group allows the user to determine the receive position update period. In theUpdate Rate edit box, enter a value (in milliseconds) to specify the period. With Effective PositionUpdate Rate, the user can check which period is actually being used by the receiver.The Pseudorange Smoothing interval edit box specifies the interval over which pseudoranges aresmoothed by using corresponding carrier phase measurements. Here you can enter values between 0 and900 seconds. Zero designates that carrier phase measurements will not be used for smoothing pseudo-ranges.With Ionosphere Correction Smoothing Interval edit box, the user specifies the nominal ionosphericcorrection smoothing interval over which raw ionospheric corrections are smoothed (assuming thereceiver has been working for some time and has already obtained enough raw ionospheric corrections toperform such smoothing). This integer parameter varies between 0900 seconds. The default value is60.With the Minimum Iono Smoothing Interval edit box, the user specifies the minimum smoothing intervalfor the receiver to filter raw ionospheric corrections before they can be used in position computation. Thisinteger parameter ranges between 0 and 900 seconds. The default value is 30 seconds.In the Doppler Smoothing Bandwidth edit box, the user sets the method used for smoothing Doppler.There are three available methods:

Receiver outputs raw (unsmoothed) Doppler. Instantaneous yet rather noisy Dopplermeasurements.

Doppler is computed using two consecutive carrier phase measurements, CarPhase[i] andCarPhase[i-1], where i stands for the current epoch. Such Doppler measurements are less noisythan in the first case.

Doppler is computed using three consecutive carrier phase measurements,

Documents

NetView Software Manual