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User's Guide

ManualsBrandsTelit Communications ManualsElectronicsGSM 850, E-GSM 900, DCS 1800, PCS 1900, FDD IV, 2G/3.5G module
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UC864-E-AUTO / AWS-AUTO Hardware User Guide
1vv0300795 Rev.11 – 2010/11/18
Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved. Page 15 of 78
5.2. Initialization and Activation state
Upon turning on UC864-E-AUTO / AWS-AUTO, the module is not activated yet
because the boot sequence of UC864-E-AUTO / AWS-AUTO is still going on internally.
It takes about 10 seconds to complete the initializing the module internally.
For this reason, it would be useless to try to access UC864-E-AUTO/ AWS-AUTO
during a
Initialization state
as below. To get the desirable stability, UC864-E-AUTO /
AWS-AUTO needs at least 10 seconds after the PWRMON goes High.
During the
Initialization state
, any kind of AT-command is not available. DTE must be
waiting for the
Activation state
to communicate with UC864-E-AUTO / AWS-AUTO.