Q2406 Datasheet, PDF (40/81 Pages) List of Unclassifed Manufacturers – SELF CONTAINED E GSM/GPRS 900/1800 OR 850/1900 BI BAND MODULE

WM_PRJ_Q2400_PTS_002 - 002
24th January 2003
2.14.1 Operating sequences
2.14.1.1 Power ON
Once the module supplied, the application must set the ON/OFF signal to high
to start the module power ON sequence. The ON/OFF signal must be hold for
1000ms minimum. After this time, an internal mechanism keeps it on hold.
During the power ON sequence, an internal reset is automatically performed by
the module for 240ms (typical). During this phase, any external reset should be
avoided. Once the initialisation is complete (timing is SIM and network
dependent) the AT interface answers « OK » to the application³. For further
details, please check the AT commands manual (+WIND, +WAIP)
POWER SUPPLY
ON/OFF
T_on/off-hold
(1000ms min)
INTERNAL RST
STATE OF THE MODULE
Module OFF
IBB+RF < 10µA
T_rst
(240ms typ)
RESET mode
IBB+RF=20 to 40mA
AT answers « OK »
Module ON
IBB+RF<120mA
(no loc. update)
Module READY
SIM and Network dependent
I_BB+RF = overall current consumption (Base Band + RF part)
Figure 10 : Power-ON sequence (no PIN code activated)
3 _{For this, the application has to send AT↵. If the application manages hardware flow control, the}
AT command can be sent during the initialisation phase. Another solution is to use the +WIND
command to get an unsolicited status from the module.
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