User's Manual

HE910 Hardware User Guide
1vv0300925 Rev.28 – 2015-06-24
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 24 of 24
A flow chart showing the proper turn on procedure is displayed below:
“Modem ON Proc”
START
Y
Y
GOTO
“HW SHUTDOWN
unconditional”
GOTO
“Start AT CMD
.”
N
PWMON = ON
?
PWMON = ON
?
N
Delay 1s
ON_OFF* = LOW
Delay = 5 Sec
ON_OFF* = HIGH
“Modem ON Proc”
END
VB
ATT
>
3.22V
?
Y
N