User's Guide

LE910 V2 HARDWARE USER GUIDE 1VV0301200 Rev.8 • 2016-10-07 32 of 84
Reproduction forbidden without Telit Communications PLC written authorization – All Rights Reserved
A flow chart showing the proper turn on procedure is displayed below:
NOTE:
When the USB is connected or after the firmware updating, Delay must be equal at least
to 10 seconds.
“Modem ON Proc”
START
VBATT > 3.10V
?
ON_OFF* = LOW
PWRMON=ON
?
Delay = 5 sec (see note below)
ON_OFF* = HIGH
GO TO
“HW Shutdown
Unconditional”
PWRMON=ON
?
Delay = 1 sec
GO TO
“Start AT Commands””
“Modem ON Proc”
END
N
N
Y
Y
Y
N