Quectel LC79D (A) EVB, Руководство пользователя

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GNSS Module Series
LC79D (A) EVB User Guide
LC79D(A)_EVB_User_Guide 2 / 21
Contents
About the Document .................................................................................................................................. 1
Contents ...................................................................................................................................................... 2
Table Index .................................................................................................................................................. 3
Figure Index ................................................................................................................................................ 4
1 Introduction ......................................................................................................................................... 5
1.1. Safety Information ...................................................................................................................... 5
2 General Overview ................................................................................................................................ 6
2.1. Top View of the EVB .................................................................................................................. 6
2.2. EVB Kit Accessories .................................................................................................................. 7
2.3. EVB and Accessories Assembly ................................................................................................ 8
3 Interface Applications ........................................................................................................................ 9
3.1. Micro USB Interface ................................................................................................................... 9
3.2. Antenna Interface ....................................................................................................................... 9
3.3. Switches and Buttons .............................................................................................................. 10
3.4. Operation Status Indication LEDs ............................................................................................. 11
3.5. Test Points ................................................................................................................................ 12
4 EVB Operation Procedures .............................................................................................................. 14
4.1. Firmware Download ................................................................................................................. 14
4.1.1. Firmware Download in Normal Working Mode ............................................................. 14
4.1.2. Firmware Download in Host Mode ................................................................................ 15
4.2. Communication via Micro USB Interface ................................................................................. 15
5 Usage of QGNSS ............................................................................................................................... 17
5.1. COM and Baud Rate Setting ................................................................................................... 17
5.2. PQ Command Sending ............................................................................................................ 18
5.3. Automatic TTFF Testing ........................................................................................................... 19
6 Appendix A References .................................................................................................................... 20