L70-R EVB User Guide GPS Module Series Rev. L70-R_EVB_User_Guide_V1.0 Date: 2014-05-07 www.quectel.com GPS Module Series L70-R EVB User Guide Our aim is to provide customers with timely and comprehensive service. For any assistance, please contact our company headquarters: Quectel Wireless Solutions Co., Ltd. Office 501, Building 13, No.99, Tianzhou Road, Shanghai, China, 200233 Tel: +86 21 5108 6236 Mail: info@quectel.com Or our local office, for more information, please visit: l e t l c a i e t u n Q fide n o C http://www.quectel.com/support/salesupport.aspx For technical support, to report documentation errors, please visit: http://www.quectel.com/support/techsupport.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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L70-R_EVB_User Guide Confidential / Released 1 / 24 GPS Module Series L70-R EVB User Guide About the Document History Revision 1.0 l e t l c a i e t u n Q fide n o C Date Author Description 2014-05-07 Ada LI Initial L70-R_EVB_User Guide Confidential / Released 2 / 24 GPS Module Series L70-R 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 ............................................................................................................... 13 3.5. Operating Status LEDs ............................................................................................................. 14 3.6. Test Points ................................................................................................................................. 15 4 EVB and Accessories ........................................................................................................................ 16 5 Install Device Driver........................................................................................................................... 17 6 Starting PowerGPS ............................................................................................................................ 18 7 Appendix A Reference....................................................................................................................... 24 l e t l c a i e t u n Q fide n o C L70-R_EVB_User Guide Confidential / Released 3 / 24 GPS Module Series L70-R 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 .................................................................................. 19 TABLE 6: REFERENCE .................................................................................................................................... 24 TABLE 7: ABBREVIATIONS .............................................................................................................................. 24 l e t l c a i e t u n Q fide n o C L70-R_EVB_User Guide Confidential / Released 4 / 24 GPS Module Series L70-R 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 FIGURE 7: LNA LAYOUT .................................................................................................................................. 12 FIGURE 8: SWITCHES AND BUTTONS .......................................................................................................... 13 l e t l c a i e t u n Q fide n o C FIGURE 9: OPERATING STATUS LEDS .......................................................................................................... 14 FIGURE 10: TEST POINTS J106 ...................................................................................................................... 15 FIGURE 11: EVB AND ACCESSORY EQUIPMENTS ...................................................................................... 16 FIGURE 12: POWERGPS TOOL ...................................................................................................................... 18 FIGURE 13: MTK COMMAND .......................................................................................................................... 20 FIGURE 14: STATIC TTFF TESTING ............................................................................................................... 21 FIGURE 15: STATIC TTFF TESTING CONFIGURATION OPTIONS ............................................................... 22 FIGURE 16: STATIC TTFF TESTING CONFIGURATION ................................................................................ 23 L70-R_EVB_User Guide Confidential / Released 5 / 24 GPS Module Series L70-R EVB User Guide 1 Introduction This document defines and specifies the usage of L70-R EVB (Evaluation Board). You can get useful information about L70-R EVB and GPS demo tool from this document. l e t l c a i e t u n Q fide n o C L70-R_EVB_User Guide Confidential / Released 6 / 24 GPS Module Series L70-R EVB User Guide 2 Introduction to EVB Kit 2.1. EVB Top and Bottom View l e t l c a i e t u n Q fide n o C C D B E F A J G H I Figure 1: EVB Top View L70-R_EVB_User Guide Confidential / Released 7 / 24 GPS Module Series L70-R EVB User Guide E F A l e t l c a i e t u n Q fide n o C G J Figure 2: EVB Bottom View A: B: C: D: E: F: G: H: I: J: UART port Serial port alternation switch RESET button POWER switch Micro-USB port Indication LEDs Antenna interface L70-R Module STANDBY switch Test points L70-R_EVB_User Guide Confidential / Released 8 / 24 GPS Module Series L70-R EVB User Guide 2.2. EVB Accessories B l e t l c a i e t u n Q fide n o C A Figure 3: EVB Accessories A: B: USB cable GPS active antenna (3.3V) L70-R_EVB_User Guide Confidential / Released 9 / 24 GPS Module Series L70-R EVB User Guide 3 Interface Application 3.1. USB Interface l e t l c a i e t u n Q fide n o C Figure 4: Micro-USB Interface The main power is supplied via Micro-USB interface. Quectel provides two ways for data communication: Micro-USB and UART interface which are controlled by serial port alternation switch (S2). Both of RS232 and Micro-USB cable are necessary, if you want to use UART in order to output NEMA. So the easy way is touse Micro-USB cable which both provides the power and output NEMA. You can make alternation between UART port and Micro-USB interface via switch (S2). NOTE If you want to use PowerGPS Tool, UART interface is recommended for data communication. L70-R_EVB_User Guide Confidential / Released 10 / 24 GPS Module Series L70-R EVB User Guide 3.2. UART Interface l e t l c a i e t u n Q fide 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 L70-R_EVB_User Guide GND Confidential / Released 11 / 24 GPS Module Series L70-R EVB User Guide 3.3. Antenna Interface l e t l c a i e t u n Q fide n o C Antenna Figure 6: Antenna Interface C109 R118 Figure 7: LNA Layout L70-R_EVB_User Guide Confidential / Released 12 / 24 GPS Module Series L70-R EVB User Guide For choice of external antenna, both of active antenna and passive antenna can be selected. Please note the LNA is installed in the EVB by default, so you have to move C109 to R112 and R118 to R105, when you want to remove the LNA for test. 3.4. Switches and Buttons l e t l c a i e t u n Q fide n o C K1 S1 S2 S3 Figure 8: Switches and Buttons Table 2: Switches and Buttons Part S1 S2 Name I/O Description POWER I Control power supply via Micro-USB. I QUECTEL EVB supplies two communicative ways: Micro-USB and UART which are controlled by switch. Serial port alternation switch S3 STANDBY I The module will enter into standby mode when switching from OFF to ON, and exit from standby mode in the opposite operation. K1 RESET I Press and release this button, then the module will reset. L70-R_EVB_User Guide Confidential / Released 13 / 24 GPS Module Series L70-R EVB User Guide 3.5. Operating Status LEDs l e t l c a i e t u n Q fide n o C Figure 9: Operating Status LEDs Table 3: Operating Status LEDs Part Name I/O Description L1 TXD1 O Flash: turn on successfully. Micro-USB or UART1 port can output messages. Extinct: fail to turn on the module. L2 1PPS O Flash: fix successfully. The frequency is 1Hz. Extinct: no fix. L70-R_EVB_User Guide Confidential / Released 14 / 24 GPS Module Series L70-R EVB User Guide 3.6. Test Points 5 4 3 2 1 6 7 8 9 10 l e t l c a i e t u n Q fide n o C Figure 10: Test Points J106 Table 4: Pins of J106 Pin 1/10 2 3 4 5 6 7 8 9 Signal I/O GND Description Ground STANDBY I Enter or exit standby mode 1PPS O 1 pulse per second AADET_N I Reserved 32K/DRIN Reserved TIMER(FORCE_ON) Reserved RESET I System reset TXD1 O Transmit data RXD1 I Receive data L70-R_EVB_User Guide Confidential / Released 15 / 24 GPS Module Series L70-R EVB User Guide 4 EVB and Accessories The EVB and its accessories are equipped as shown in Figure 11. l e t l c a i e t u n Q fide n o C Figure 11: EVB and Accessory Equipments L70-R_EVB_User Guide Confidential / Released 16 / 24 GPS Module Series L70-R EVB User Guide 5 Install Device Driver Please note that you need to install the driver of Micro-USB when use Micro-USB for data communication. The driver has been stored in our FTP server. The driver of CP210x also can be downloaded from internet. The download path of our FTP server is as below: l e t l c a i e t u n Q fide n o C Overseas customer: /d:/FTP/OC/Overseas_Technical/Overseas_Module Official Documents/GNSS Module/Common/04 Tool Kit/ GNSS_EVB_Micro-USB_Driver_CP210x. Domestic customer: /d:/FTP/CC/Domestic_Technical/Domestic_Module Module/Common/04 Tool Kit/ GNSS_EVB_Micro-USB_Driver_CP210x. L70-R_EVB_User Guide Confidential / Released Official Documents/GNSS 17 / 24 GPS Module Series L70-R EVB User Guide 6 Starting PowerGPS The PowerGPS version is V2.2.0. The PowerGPS tool can help you 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 i e t u n Q fide n o C Figure 12: PowerGPS Tool After EVB accessories are assembled, turn on the module and start up the PowerGPS. Select a correct COM port and baud rate (L70-R module supports 9600bps by default), then click the button "Create Connection". From the PowerGPS window, you can view CNR message, time, position, speed, precision and so on. Explanations are listed in Table 5. L70-R_EVB_User Guide Confidential / Released 18 / 24 GPS Module Series L70-R 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 i e t u n Q fide 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 L70-R_EVB_User Guide Confidential / Released 19 / 24 GPS Module Series L70-R 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 i e t u n Q fide n o C Figure 13: MTK Command Automatic TTFF Testing This tool allows you to measure the TTFF (Time to First Fix) under different testing conditions. You can choose to test the TTFF from full start, cold start, warm start and hot start and the number of tests can be chosen from 1, 10, 20, 100, 1000 and 10000. Click on the Run button to start the test and it can be stopped by clicking on the Stop button. The configuration is as below: Start "MTK" menu, and click "Static TTFF Testing", then "Static TTFF Testing" as shown below: L70-R_EVB_User Guide Confidential / Released 20 / 24 GPS Module Series L70-R EVB User Guide l e t l c a i e t u n Q fide n o C Figure 14: Static TTFF Testing Click "Set reference point", choose "Reference location". After start positioning, click "Use Mean Position", then click "OK". As shown in the screenshots below: L70-R_EVB_User Guide Confidential / Released 21 / 24 GPS Module Series L70-R EVB User Guide l e t l c a i e t u n Q fide n o C Figure 15: Static TTFF Testing Configuration Options Click "Config", set "TTFF Time- out (sec)", then click "OK", shown as below: In general, if you choose hot start, set "TTFF Time-out (sec)" as10s. If you choose warm start, set the "TTFF Time-out (sec)" as 50s. If you choose cold start, set the "TTFF Time-out (sec)" as 100s. "TTFF Time-out (sec)" can help you to judge TTFF and save time. L70-R_EVB_User Guide Confidential / Released 22 / 24 GPS Module Series L70-R EVB User Guide l e t l c a i e t u n Q fide n o C Figure 16: Static TTFF Testing Configuration The above operation is completed. Click on the Run button to start the test and it can be stopped by clicking Stop button. After finishing the testing, you can see the testing result charts. Of course, the result also will be stored in the tool installation path, and you can view the corresponding log. L70-R_EVB_User Guide Confidential / Released 23 / 24 GPS Module Series L70-R EVB User Guide 7 Appendix A Reference Table 6: Reference SN Document Name Remark [1] Quectel_L70-R_Hardware_Design L70-R Hardware Design [2] Quectel_L70-R_Protocol_Specification L70-R Protocol Specification [3] Quectel_L70-R_Reference Design L70-R Reference Design l e t l c a i e t u n Q fide n o C Table 7: Abbreviations Abbreviation CNR GPS LED PPS PRN SPS SV UART UTC WGS84 Description Carrier-to-Noise Ratio Global Positioning System Light Emitting Diode Pulse Per Second Pseudorandom Noise Standard Positioning Service Satellite Vehicle Universal Asynchronous Receiver & Transmitter Universal Time Coordinated World Geodetic System 1984 L70-R_EVB_User Guide Confidential / Released 24 / 24