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XT55
GPS Startup
Siemens Cellular Engine
Version: 02a
DocID: XT55_GPS_startup_ug_V02a
User’s Guide
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XT55 GPS Startup User’s Guide s Confidential/Released mo b i l e Document Name: XT55 GPS Startup User’s Guide Version: 02a Date: June 28, 2004 DocId: XT55_GPS_startup_ug_V02a Status: Confidential/Released General Notes Product is deemed accepted by recipient and is provided without interface to recipient’s products. The documentation and/or product are provided for testing, evaluation, integration and information purposes. The documentation and/or product
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XT55 GPS Startup User’s Guide s Confidential/Released mo b i l e Contents 0 Document history..........................................................................................................4 1 Introduction ...................................................................................................................5 1.1 Related documents................................................................................................5 1.2 Terms and abbreviations ..........
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XT55 GPS Startup User’s Guide s Confidential/Released mo b i l e 0 Document history Preceding document: "XT55 GPS Startup User’s Guide" Version 01 New document: "XT55 GPS Startup User’s Guide" Version 02a Chapter What is new 2.3 Revised update procedure Preceding document: "XT55 GPS Startup User’s Guide" Version 01 New document: "XT55 GPS Startup User’s Guide" Version 02 Chapter What is new nd 2 cover page New version of General Notes 2 The pre-defined baud rate is set to
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XT55 GPS Startup User’s Guide s Confidential/Released mo b i l e 1 Introduction This brief guide explains how to establish a GPS connection using the XT55 module. The Global Positioning System (GPS) is a world-wide navigation system form from 24 satellites. It uses at least 4 satellites as reference points to calculate the current position. The GPS receiver embedded in the XT55 module constantly tracks all satellites in view, thus providing accurate satellite position data. It allows
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XT55 GPS Startup User’s Guide s Confidential/Released mo b i l e 1.2 Terms and abbreviations Abbreviation Description AVL Automatic Vehicle Location bps Bit per Second CRLF Carriage Return/Line Feed GPI General Propose Input GPS Global Positioning System GSM Global Standard for Mobile Communications NMEA National Maritime Electronics Association XT55_GPS_startup_ug_V02a Page 6 of 13 28.06.2004
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XT55 GPS Startup User’s Guide s Confidential/Released mo b i l e 2 Getting started Please ensure that the XT55 module connects properly to the application platform. In order to prevent mechanical damage, be careful not to force, bend or twist the module. 2.1 Terminal emulator setup The example below is based on the Windows HyperTerminal application (terminal emulator program), but XT55 can also be configured using other terminal programs. The XT55 is used with a PC running Windows 20
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XT55 GPS Startup User’s Guide s Confidential/Released mo b i l e The appearing dialog box shows the default settings for the selected COM port. NOTE: The pre-defined factory settings of the XT55 GPS port SDn1 (4800bps, 8 data bits, no parity, 1 stop bit, no flow control) cannot be changed, otherwise no connection to the XT55 GPS port will be established. Figure 2: COM port transmission settings If a connection to the XT55 module has been established, the transmitted protocols wil
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XT55 GPS Startup User’s Guide s Confidential/Released mo b i l e 2.2 Evaluating GPS data using SiRFdemo software To evaluate GPS data it is necessary to use special GPS software like the provided SiRFDemo software. Below you can find all information you need for downloading the SiRFDemo software. • Before running the software, ensure that your PC is recognizing the XT55 module properly. In order to receive satellite signals, the XT55 must be placed in such way that the receiver has
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XT55 GPS Startup User’s Guide s Confidential/Released mo b i l e • Click the Connection/Disconnection icon on the toolbar by the up-down button (see Figure 5), the program will then automatically connect to Data Source and starts evaluating. Click this button to open and close the connection. Figure 5: SiRFstar demo on selected COM port • The output messages can be viewed in the Development Data screen. For a description of NMEA messages
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XT55 GPS Startup User’s Guide s Confidential/Released mo b i l e • If the XT55 module is receiving valid GPS positions, click the Map View icon on toolbar by the up-down button (see marked button in figure below), the user can see the updated data of longitude, latitude, altitude, date time etc. Figure 7: Updating GPS data in Map view XT55_GPS_startup_ug_V02a Page 11 of 13 28.06.2004
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XT55 GPS Startup User’s Guide s Confidential/Released mo b i l e 2.3 Downloading AVL software into the XT55 module For downloading the XT55 AVL software it is recommended to use the provided SiRFflash software. It is a fast in-circuit flash memory programming utility. It needs a serial line to communicate with the target system and supports a great variety of flash chips. To download the XT55 AVL software it is recommended to follow the given instruction: • Connect the XT55 module on
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XT55 GPS Startup User’s Guide s Confidential/Released mo b i l e 3 Hardware components overview Figure 9: Block diagram of XT55 for SiRF Demo application Figure 10: Block diagram of XT55 with AVL or TCP/IP application (optional) XT55_GPS_startup_ug_V02a Page 13 of 13 28.06.2004
