User's Manual

LE920A4 HW User Guide
Doc#: 1VV0301261
Rev. 4.3 Page 8 of 123 2017-12-07
Solder Paste ................................................................................................ 101
10.7.1. Solder Reflow .............................................................................................. 101
11. APPLICATION GUIDE ................................................................................ 103
Debug of the Module in Production .............................................................. 103
Bypass Capacitor on Power Supplies .......................................................... 104
SIM Interface ............................................................................................... 105
11.3.1. SIM Schematic Example .............................................................................. 105
EMC Recommendations .............................................................................. 105
Download and Debug Port ........................................................................... 106
11.5.1. Fast Boot Mode ........................................................................................... 106
11.5.2. Recovery Boot Mode ................................................................................... 106
Antenna Detection ....................................................................................... 107
12. PACKING SYSTEM .................................................................................... 108
Tray ............................................................................................................. 108
Tape & Reel ................................................................................................. 111
Moisture Sensitivity ...................................................................................... 112
13. SAFETY RECOMMENDATIONS................................................................. 113
14. CONFORMITY ASSESSMENT ISSUES ..................................................... 114
FCC/ISED Regulatory notices ...................................................................... 114
15. ACRONYMS ................................................................................................ 116
16. DOCUMENT HISTORY ............................................................................... 119