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Leadtek GPS EVK III User's & Technical Manual

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User's Technical Manual of Leadtek GPS EVK III
LR 9500
Version 1.01
4 August 2003
All Rights Reserved
1

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Summary of Contents for Leadtek GPS EVK III

  • Page 1 User’s Technical Manual of Leadtek GPS EVK III LR 9500 Version 1.01 4 August 2003 All Rights Reserved...

  • Page 2: Table Of Contents

    2 PRODUCT FEATURES ..........................3 3 TECHNICAL SPECIFICATIONS......................3 4 MECHANICAL DIMENSIONS........................ 4 5 OUTLINE AND DESCRIPTIONS ......................4 6 INNER PHOTOS OF EVK........................6 7 OPERATION OF GMONITOR SOFTWARE WITH GPS EVK III............. 9 7.1 N ..........................9 ORMAL OPERATION 7.2 C ................

  • Page 3: Introduction

    GPS 9500 EVK-III is an evaluation kit designed to demonstrate the performance of Leadtek GPS modules. It supports Leadtek 9540, 9543, and 9547 modules. GPS 9500 EVK-III not only helps customers to evaluate our GPS modules performance but also can be used to update new firmware for the GPS modules.

  • Page 4: Mechanical Dimensions

    Snap start 2 sec., average Hot start 8 sec., average Warm start 38 sec., average Cold start 45 sec., average Dynamic Conditions Altitude 18,000 meters (60,000 feet) max. Velocity 515 meters/second (1000 knots) max. Acceleration 4g, max. Jerk 20 meters/second , max.
  • Page 5 Functional kit Description Power ON/OFF Power ON/OFF button for GPS 9500 EVK-III. Push down will turn on power. GPS Antenna Connect GPS active antenna with SMA connector Power & Status LED Two colors LED shows power and data transmitting status. The green is for power status and the red is for GPS data output status.

  • Page 6: Inner Photos Of Evk

    Reset GPS module and force a cold start. Reset Button Boot Select Button Please refer to details on technical manual of CD-ROM for download instructions. To download firmware, push reset button once while hold down this button. The GPS module will enter into forced download mode.
  • Page 7 GPS module Module 9540 9543 Photo Module 9547 Photo EVK with GPS 9540 module...
  • Page 8 EVK with GPS 9543 module EVK with GPS 9547 module...

  • Page 9: Operation Of Gmonitor Software With Gps Evk Iii

    7 Operation of GMonitor software with GPS EVK III 7.1 Normal operation In GPS monitor main screen, click data source setup button indicated in the figure below. <Note>Go to view menu to choose desirable information windows you like to observe.
  • Page 10 Next, please choose Com Port.
  • Page 11 Next, click connect button.
  • Page 12 Next, please click on Auto detect protocol and baud rate button. The GPS software will go on detecting protocol for GPS module.

  • Page 13: Cold/Warm/Hot Start Time Measurements

    7.2 Cold/Warm/Hot start time measurements You can use the GPS EVK device and GPS Monitor software to measure hot, warm and cold start time of the GPS module. To perform this operation, you need to switch GPS protocol to SiRF Binary mode. Click on Action function of main menu and choose Switch to SiRF Protocol item.
  • Page 14 Next, please press the right button of mouse on window of development data view. It will pop up the menu and you have to choose Hold on fixed item.
  • Page 15 Next, please click on Initialize Data Source button. This example shows how to measure hot start time. Please choose Hot Start item and click on OK button.
  • Page 16 Finally, please wait a moment and you will get time of hot start. Please repeat above the steps and you will get time of warm and cold start. <Warm Start>...
  • Page 17 <Cold Start>...

  • Page 18: Download The Firmware To Gps Module

    8 Download the firmware to GPS module <Step 1>Double click the GMonitor desktop icon to run software in order to download firmware. The Main screen is shown as follows. <Step 2> Choose the Setup GPS Flash Star II option from of main menu.
  • Page 19 The following screen shows the download options. <Download Options> Uncheck this box and program will only clear the portion Erase All of the flash memory that the new firmware will occupy. Check this box will clear the entire flash memory space before firmware burn-in.
  • Page 20 1. To use Software Download method, uncheck “Force Download” box and follow the reset of the download operations. For some Leadtek products that do not have boot select and reset switches, software download is the only way to upgrade firmware.

  • Page 21: Measure Power Consumption Of Gps Module In Different Operation

    9 Measure Power consumption of GPS module in different operation modes You can use the GPS EVK device and oscilloscope to measure power consumption or current of the GPS module. We will use 9547 module for demonstration here. Step 1. Replace the resistor value of R24 to1.1 Ohm.
  • Page 22 Step 2. The following figure shows the current of GPS 9547 module. We can calculate the current value. The value is about 64 mA and this operation is based on continuous mode without active antenna. I = V / R = 70 mV / 1.1 Ohm = 63.6 mA...
  • Page 23 Step 3. You can switch continuous mode to Trickle Power mode and observe the current consumption changes. Use GMonitor to enable trickle power mode and set the parameters to 2 seconds of update rate and 200 milliseconds of on time. (Update rate = 2 sec, On time = 200 msec)
  • Page 24 Step 4. The following figures show the current of EVK with GPS 9547 module and active antenna operated at trickle power mode. The active antenna has a current consumption of 6.4 mA in this example. I = V / R = 77 mV / 1.1 Ohm ≈ 70 mA ≈...

  • Page 25: Install The Usb Driver

    10 Install the USB Driver <Note>Please do not plug in USB serial cable before installation of USB Driver! Step 1. Insert the software CD in your CD-ROM drive. The Autorun program will display a setup screen as the figure to the right. Note: You can also start the setup program by running install.exe in the main directory of the CD.
  • Page 26 Step 4. Finally you will click on OK and Exit buttons to finish installation. Step 5. Perform a reboot of PC and then insert the USB serial cable. GMonitor should now be able to detect a new serial port for the USB serial cable.

  • Page 27: Uninstall The Usb Driver

    11 Uninstall the USB Driver Step 1. Insert software CD in your CD-ROM drive. Run Remover.exe at E:\USB Driver\ (assuming E: is the CD-ROM drive). A dialog box as the figure to the right appears Step 2. A message telling you the driver has been removed appears. Close the message box. Step 3.

  • Page 29: Appendix B Specification Of Gps Active Antenna

    Appendix B Specification of GPS active antenna Active GPS Antenna Model: LR9400 Specifications Performance Center Frequency L1 (1575.42 MHz, +/- 1.023 MHz) Impedance 50 Ohm Bandwidth 10 MHz (min) VSWR 2.0 (max) Polarization RHCP (Right Hand Circular Polarization) Gain Characteristics of Antenna +3 dBic (typical, at zenith) Element -1 dBic ( typical, at 10°...
  • Page 30 Plastic Color Black Mount Magnetic Cable RG-174 type coaxial cable 5 meters long Connector BNC, SMA, SMB, MMCX, etc Environmental Operating Temperature -40°C to +85°C Storage Temperature -50°C to +100°C Humidity 95% non-condensing Waterproof 100% Waterproof <Note 1> Accessory of GPS EVK, active antenna operates in 3V. It has a SMA connector for GPS EVK and 3 meters cable length.

  • Page 31: Appendix C The Contents Of Cd-Rom

    Fax: +886-(0)2 8226 5801 Leadtek U.S.A.: 46721 Fremont Blvd., Fremont, CA94538, U.S.A. Phone: +510 490 8076 Fax: +510 490 7759 Leadtek Research Europe B.V.： Antennestraat 16 1322 AB, Almere – The Netherlands Tel:+31(0)36 536 55 78 Fax:+31(0)36 536 22 15 E-mail: service@leadtek.com.tw Home Page: www.leadtek.com.tw...

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