User's Guide

Smart Machine Smart Decision
SIM7100A EVB user Guide 20.08.201416
5.5 Turning off
Press the POWER key for about 1 second, SIM7100A module will be turned off.
5.6 Measuring the current consumption
User can measure SIM7100A current consumption in the sleep mode on our EVB. User need to
follow steps.
(1) Remove the jumper from J203, and provide a 3.8V DC power supply (such as: Agilent 66319B)
for VBAT on SIM7100A EVB;
(2) Install a SIM card and a RF antenna;
(3) Shutdown UART by S401;
(4) Remove the USB cable;
(5) Power on SIM7100A;
SIM7100A will enter sleep mode automatically. User can measure SIM7100A current
consumption. Test report is described in the figure below.
Module power on
Connect module USB slot and PC by USB cable
Install module driver on windows OS.
Close all app software which
use
USB
virtual
ports
Double click QDL.exe,
update
begin
Waiting until download finish,
QDL quit out automatically
Update successCopy new firmware into QDL data folder
FIGURE 12: USB interface update procedure