L26 EVB User Guide GNSS Module Series Rev. L26_EVB_User_Guide_V1.0 Date: 2013-04-26 www.quectel.com GNSS Module L26 EVB User Guide Our aim is to provide customers with timely and comprehensive service. For any assistance, please contact our company headquarter: Quectel Wireless Solutions Co., Ltd. Room 501, Building 13, No.99, Tianzhou Road, Shanghai, China, 200233 Tel: +86 21 5108 6236 Mail: info@quectel.com l e t l c a e i t u n Q ide f n o C Or our local office, for more information, please visit: http://www.quectel.com/quectel_sales_office.html For technical support, to report documentation errors, please visit: http://www.quectel.com/tecsupport.aspx GENERAL NOTES QUECTEL OFFERS THIS INFORMATION AS A SERVICE TO ITS CUSTOMERS. THE INFORMATION PROVIDED IS BASED UPON CUSTOMERS REQUIREMENTS. QUECTEL MAKES EVERY EFFORT TO ENSURE THE QUALITY OF THE INFORMATION IT MAKES AVAILABLE. 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L26_EVB_User Guide Confidential / Released 1 / 22 GNSS Module L26 EVB User Guide About the document History Revision 1.0 l e t l c a e i t u n Q ide f n o C Date Author Description 2013-04-22 Ada LI Initial L26_EVB_User Guide Confidential / Released 2 / 22 GNSS Module L26 EVB User Guide Contents About the document ................................................................................................................................... 2 Contents ....................................................................................................................................................... 3 Table Index ................................................................................................................................................... 4 Figure Index ................................................................................................................................................. 5 1 Introduction .......................................................................................................................................... 6 2 Introduction to EVB Kit ....................................................................................................................... 7 2.1. EVB Top and Bottom View .......................................................................................................... 7 2.2. EVB Accessories ......................................................................................................................... 9 3 Interface Application ......................................................................................................................... 10 3.1. USB Interface ............................................................................................................................ 10 3.2. UART Interface.......................................................................................................................... 11 3.3. Antenna Interface ...................................................................................................................... 12 3.4. Switches and Buttons ............................................................................................................... 12 3.5. Operating Status LEDs ............................................................................................................. 14 3.6. Test Points ................................................................................................................................. 15 4 EVB and Accessories ........................................................................................................................ 17 5 Install Device Driver........................................................................................................................... 18 6 Starting PowerGPS ............................................................................................................................ 19 7 Appendix A Reference....................................................................................................................... 22 l e t l c a e i t u n Q ide f n o C L26_EVB_User Guide Confidential / Released 3 / 22 GNSS Module L26 EVB User Guide Table Index TABLE 1: PINS OF UART PORT ....................................................................................................................... 11 TABLE 2: SWITCHES AND BUTTONS ............................................................................................................. 13 TABLE 3: OPERATING STATUS LEDS ............................................................................................................ 14 TABLE 4: PINS OF J106 ................................................................................................................................... 15 TABLE 5: EXPLANATIONS OF POWERGPS WINDOW .................................................................................. 20 TABLE 6: REFERENCE .................................................................................................................................... 22 l e t l c a e i t u n Q ide f n o C TABLE 7: ABBREVIATIONS .............................................................................................................................. 22 L26_EVB_User Guide Confidential / Released 4 / 22 GNSS Module L26 EVB User Guide Figure Index FIGURE 1: EVB TOP VIEW ................................................................................................................................ 7 FIGURE 2: EVB BOTTOM VIEW ........................................................................................................................ 8 FIGURE 3: EVB ACCESSORIES ........................................................................................................................ 9 FIGURE 4: MICRO-USB INTERFACE .............................................................................................................. 10 FIGURE 5: UART INTERFACE .......................................................................................................................... 11 FIGURE 6: ANTENNA INTERFACE .................................................................................................................. 12 l e t l c a e i t u n Q ide f n o C FIGURE 7: LNA LAYOUT .................................................................................................................................. 12 FIGURE 8: SWITCHES AND BUTTONS .......................................................................................................... 13 FIGURE 9: OPERATING STATUS LEDS .......................................................................................................... 14 FIGURE 10: TEST POINTS J106 ...................................................................................................................... 15 FIGURE 11: EVB AND ACCESSORY EQUIPMENTS ...................................................................................... 17 FIGURE 12: POWERGPS TOOL ...................................................................................................................... 19 FIGURE 13: MTK COMMAND .......................................................................................................................... 21 FIGURE 14: STATIC TTFF TESTING ............................................................................................................... 21 FIGURE 15: STATIC TTFF TESTING CONFIGURATION OPTIONS ............................................................... 21 FIGURE 16: STATIC TTFF TESTING CONFIGURATION ................................................................................ 21 L26_EVB_User Guide Confidential / Released 5 / 22 GNSS Module L26 EVB User Guide 1 Introduction This document defines and specifies the usage of L26 EVB (Evaluation Board). You can get useful information about L26 EVB and GNSS demo tool from this document. l e t l c a e i t u n Q ide f n o C L26_EVB_User Guide Confidential / Released 6 / 22 GNSS Module L26 EVB User Guide 2 Introduction to EVB Kit 2.1. EVB Top and Bottom View l e t l c a e i t u n Q ide f n o C C D E B A F G I J H Figure 1: EVB Top View L26_EVB_User Guide Confidential / Released 7 / 22 GNSS Module L26 EVB User Guide F l e t l c a e i t u n Q ide f n o C G A J H Figure 2: EVB Bottom View A: B: C: D: E: F: G: H: I: J: UART port Serial port alternation switch RESET button FORCE_ON button POWER switch Micro-USB port Indication LEDs Antenna interface L26 Module Test points L26_EVB_User Guide Confidential / Released 8 / 22 GNSS Module L26 EVB User Guide 2.2. EVB Accessories l e t l c a e i t u n Q ide f n o C Figure 3: EVB Accessories A: B: USB cable GNSS active antenna (3.3V) L26_EVB_User Guide Confidential / Released 9 / 22 GNSS Module L26 EVB User Guide 3 Interface Application 3.1. USB Interface l e t l c a e i t u n Q ide f n o C Figure 4: Micro-USB Interface The main power is supplied via Micro-USB interface. We provide two ways for data communication: Micro-USB and UART interface which are controlled by alternation switch (S2). Both of RS232 and Micro-USB cable are necessary, if you want to use UART to output NEMA. So the easy way is to use Micro-USB cable which both supplies the power and outputs NEMA. You can makes alternation between UART port and Micro-USB interfaces via switch (S2). L26_EVB_User Guide Confidential / Released 10 / 22 GNSS Module L26 EVB User Guide 3.2. UART Interface l e t l c a e i t u n Q ide f n o C Figure 5: UART Interface Table 1: Pins of UART port Pin 2 3 5 Signal I/O Description RXD I Receive data TXD O Transmit data GND L26_EVB_User Guide GND Confidential / Released 11 / 22 GNSS Module L26 EVB User Guide 3.3. Antenna Interface l e t l c a e i t u n Q ide f n o C Antenna Figure 6: Antenna Interface 3.4. Switches and Buttons L26_EVB_User Guide Confidential / Released 12 / 22 GNSS Module L26 EVB User Guide K2 K1 S1 S2 l e t l c a e i t u n Q ide f n o C Figure 7: Switches and Buttons Table 2: Switches and Buttons Part S1 S2 Name I/O Description POWER I Control power supply from Micro-USB. I Quectel EVB supplies two communicative ways: Micro-USB and UART which are controlled by switch. Serial port switch K1 FORCE_ON K2 RESET L26_EVB_User Guide alternation Press and release the button, the module will be waked up from backup mode. I Press and release this button, then the module will reset. Confidential / Released 13 / 22 GNSS Module L26 EVB User Guide 3.5. Operating Status LEDs l e t l c a e i t u n Q ide f n o C Figure 8: Operating Status LEDs Table 3: Operating status LEDs Part L1 L2 Name I/O Description TXD1 O Flash: turn on successfully, Micro-USB or UART1 port can output messages. Extinct: fail to turn on the module 1PPS O Flash: fix successfully, the frequency is 1Hz Extinct: no fix L26_EVB_User Guide Confidential / Released 14 / 22 GNSS Module L26 EVB User Guide 3.6. Test Points l e t l c a e i t u n Q ide f n o C 5 6 4 7 3 2 1 8 9 10 Figure 9: Test Points J106 Table 4: Pins of J106 Pin Signal I/O Description 1/10 GND Ground 2 STANDBY Reserved 3 1PPS O 1 pulse per second 4 AADET_N I Active antenna open circuit detection 5 32K/DRIN Reserved 6 FORCE_ON Logic high will force module to be waked up from backup mode. Keep this pin open or pulled low L26_EVB_User Guide Confidential / Released 15 / 22 GNSS Module L26 EVB User Guide before entering into backup mode. If unused, keep this pin open. 7 RESET I System reset 8 TXD1 O Transmit data 9 RXD1 I Receive data l e t l c a e i t u n Q ide f n o C L26_EVB_User Guide Confidential / Released 16 / 22 GNSS Module L26 EVB User Guide 4 EVB and Accessories The EVB and its accessories are equipped as shown in Figure 10. l e t l c a e i t u n Q ide f n o C Figure 7: EVB and Accessory Equipments L26_EVB_User Guide Confidential / Released 17 / 22 GNSS Module L26 EVB User Guide 5 Install Device Driver Before using Micro-USB port, please install the driver of Micro-USB. Customer can login our FTP for download device driver. Overseas FTP path is /d:/FTP/OC/Overseas_Technical/Overseas_Module Official Documents/GNSS Module/Common/04 Tool Kit/ GNSS_EVB_Micro-USB_Driver_CP210x. l e t l c a e i t u n Q ide f n o C Domestic FTP path is /d:/FTP/CC/Domestic_Technical/Domestic_Module Official Documents/GNSS Module/Common/04 Tool Kit/ GNSS_EVB_Micro-USB_Driver_CP210x. L26_EVB_User Guide Confidential / Released 18 / 22 GNSS Module L26 EVB User Guide 6 Start PowerGPS The PowerGPS version is V2.2.0. The PowerGPS tool can help user to view the status of GPS&GLONASS receiver conveniently. When the tool is opened, the following window will be displayed: l e t l c a e i t u n Q ide f n o C Figure 8: PowerGPS Tool After EVB accessories are assembled, turn on the module and start up the PowerGPS. Select a correct COM port and baud rate (L26 module supports 9600bps by default), then click the button "Create Connection". From the PowerGPS window, user can view CNR message, time, position, speed, precision and so on. Explanations are listed in Table 5. L26_EVB_User Guide Confidential / Released 19 / 22 GNSS Module L26 EVB User Guide Table 5: Explanations of PowerGPS Window Icon Explanation SV with PRN 65. If the position of SV is near to the centre of the Sky View, the elevation angle of SV is close to 90. Dark blue means this satellite is in tracking. Light blue means this satellite is not in tracking. l e t l c a e i t u n Q ide f n o C The CNR of PRN 25 is 31dB/Hz. Light blue column means the navigation data of this satellite is in use. The CNR of PRN 70 is 32dB/Hz. White column means the navigation data of this satellite is not in use. The range of GLONASS SVID is 65-96. UTC time Latitude degree longitude degree Positing fix Using the number of satellites Horizontal Dilution of Precision Altitude based on WGS84 Datum UTC date Fix type: No-Fix, 3D or 2D SPS Using satellite Position Dilution of Precision Vertical Dilution of Precision Speed of receiver L26_EVB_User Guide Confidential / Released 20 / 22 GNSS Module L26 EVB User Guide PMTK Command You can send PMTK command by PowerGPS. The format of PMTK command is included only characters between $ and *, for example: PMTK869,0. l e t l c a e i t u n Q ide f n o C Figure 9: MTK Command L26_EVB_User Guide Confidential / Released 21 / 22 GNSS Module L26 EVB User Guide 7 Appendix A Reference Table 6: Reference SN [1] [2] [3] l e t l c a e i t u n Q ide f n o C Document name Remark L26_Hardware_Design L26 Hardware Design L26_Protocol_Specification L26 Protocol Specification L26_Reference_Design L26 Reference Design Table 7: Abbreviations Abbreviation Description CNR Carrier-to-Noise Ratio GPS GLONASS GNSS LED PPS PRN Global Positioning System Global Navigation Satellite System (The Russian GNSS) Global Navigation Satellite System Light Emitting Diode Pulse Per Second Pseudorandom Noise SPS Standard Positioning Service SV Satellite Vehicle UART Universal Asynchronous Receiver & Transmitter UTC Universal Time Coordinated WGS84 World Geodetic System 1984 L26_EVB_User Guide Confidential / Released 22 / 22