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GNSS Module

L76 EVB User Guide

L76_EVB_User Guide Confidential / Released 7 / 25

2

Introduction to EVB Kit

2.1. EVB Top and Bottom View

Figure 1

: EVB Top View

Quectel

Confidential

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Содержание L76

Страница 1: ...L76 EVB User Guide GNSS Module Series Rev L76_EVB_User_Guide_V1 1 Date 2013 04 02 www quectel com...

Страница 2: ...TOMERS REQUIREMENTS QUECTEL MAKES EVERY EFFORT TO ENSURE THE QUALITY OF THE INFORMATION IT MAKES AVAILABLE QUECTEL DOES NOT MAKE ANY WARRANTY AS TO THE INFORMATION CONTAINED HEREIN AND DOES NOT ACCEPT...

Страница 3: ...de L76_EVB_User Guide Confidential Released 2 25 About the document History Revision Date Author Description 1 0 2013 02 25 Dishon ZHOU Initial 1 1 2013 03 26 Dishon ZHOU Optimized the contents of Cha...

Страница 4: ...troduction to EVB Kit 7 2 1 EVB Top and Bottom View 7 2 2 EVB Accessories 8 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...

Страница 5: ...tial Released 4 25 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...

Страница 6: ...INTERFACE 11 FIGURE 6 ANTENNA INTERFACE 12 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 EQUIPMEN...

Страница 7: ...EVB_User Guide Confidential Released 6 25 1 Introduction This document defines and specifies the usage of L76 EVB Evaluation Board You can get useful information about L76 EVB and GNSS demo tool from...

Страница 8: ...GNSS Module L76 EVB User Guide L76_EVB_User Guide Confidential Released 7 25 2 Introduction to EVB Kit 2 1 EVB Top and Bottom View Figure 1 EVB Top View Quectel Confidential...

Страница 9: ...ased 8 25 Figure 2 EVB Bottom View A UART port B Serial port alternation switch C RESET button D FORCE_ON button E POWER switch F Micro USB port G Indication LEDs H Antenna interface I L76 Module J ST...

Страница 10: ...GNSS Module L76 EVB User Guide L76_EVB_User Guide Confidential Released 9 25 Figure 3 EVB Accessories A USB cable B GNSS active antenna 3 3V Quectel Confidential...

Страница 11: ...icro 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 cab...

Страница 12: ...Guide L76_EVB_User Guide Confidential Released 11 25 3 2 UART Interface Figure 5 UART Interface Table 1 Pins of UART port Pin Signal I O Description 2 RXD I Receive data 3 TXD O Transmit data 5 GND G...

Страница 13: ...GNSS Module L76 EVB User Guide L76_EVB_User Guide Confidential Released 12 25 3 3 Antenna Interface Figure 6 Antenna Interface Figure 7 LNA Layout Quectel Confidential...

Страница 14: ...8 to R105 when you want to remove the LNA for test 3 4 Switches and Buttons Figure 8 Switches and Buttons Table 2 Switches and Buttons Part Name I O Description S1 POWER I Control power supply via Mic...

Страница 15: ...mode K2 RESET I Press and release this button then the module will reset 3 5 Operating Status LEDs Figure 9 Operating Status LEDs Table 3 Operating status LEDs Part Name I O Description L1 TXD1 O Flas...

Страница 16: ...Released 15 25 3 6 Test Points Figure 10 Test Points J106 Table 4 Pins of J106 Pin Signal I O Description 1 32K DRIN Reserved 2 AADET_N I Active antenna open circuit detection 3 1PPS O 1 pulse per sec...

Страница 17: ...25 5 10 GND Ground 6 FORCE_ON Logic high will force module to be waked up from backup mode Keep this pin open or pulled low before entering into backup mode If unused keep this pin open 7 RESET I Syst...

Страница 18: ...L76 EVB User Guide L76_EVB_User Guide Confidential Released 17 25 4 EVB and Accessories The EVB and its accessories are equipped as shown in Figure 11 Figure 11 EVB and Accessory Equipments Quectel C...

Страница 19: ...in our FTP server The driver of CP210x also can be download from internet The download path of our FTP server is as below Overseas customer d FTP OC Overseas_Technical Overseas_Module Official Documen...

Страница 20: ...tool is opened the following window will be displayed 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...

Страница 21: ...ing 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...

Страница 22: ...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...

Страница 23: ..._User Guide Confidential Released 22 25 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...

Страница 24: ...tions Click Config set TTFF Time out sec then click OK shown as below In generally if you choose hot start TTFF Time out sec sets 10s If you choose warm start the TTFF Time out sec sets 50s If you cho...

Страница 25: ...n 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 t...

Страница 26: ...ence Design Table 7 Abbreviations Abbreviation Description CNR Carrier to Noise Ratio GPS Global Positioning System GLONASS Global Navigation Satellite System The Russian GNSS GNSS Global Navigation S...

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