Transmit State - TrimTrac ProE Locator Technical Manual

The TrimTrac ProE dwells in the STATUS state only long enough to update the
report structure. This process is virtually instantaneous and all alerts shall have
no effect on STATUS state.

TRANSMIT State

Upon entering the TRANSMIT state from the STATUS state, the TrimTrac ProE
will:
1. Power up the GSM hardware (if not already operational);
2. Start the TRANSMIT Timeout, T3 (LED Blink: Short ON, Long OFF);
3. Attempt to find a suitable 850, 900, 1800 or 1900 MHz GSM network,
establish SIM communication and register on the network; AND
4. If a suitable GSM network connection is made, transmit the latest queued
messages before expiration of the TRANSMIT Timeout, T3.
The TrimTrac ProE will transition from the TRANSMIT state whenever any of
the following occurs:
1. The GSM protocol stack confirms successful transmission of queued
TrimTrac ProE messages; OR
2. The TrimTrac ProE has made Position Report Transmit Attempts, N1, or
Status Message Transmit Attempts, N2, whichever the case may be,
before the GSM protocol stack has confirmed successful transmission of
queued TrimTrac ProE messages; OR
3. Expiration of TRANSMIT Timeout, T3.
Upon occurrence of any of the foregoing, the TrimTrac ProE will transition from
the TRANSMIT state to either the IDLE, FIX, QUERY or DELAY states as
follows:
1. To the IDLE state if:
a. The TriggerType had become set "0=IDLE Timeout, T1";
b. The TRANSMIT Timeout, T3, expires or the TrimTrac ProE has
"4=Scheduled Report"; "5=Runtime Meter"; or "6=Stop Report"
during the most recent IDLE state; AND
made Status Message Transmit Attempts, N2, before the GSM
protocol stack has confirmed successful transmission of queued
TrimTrac ProE messages.
TrimTrac ProE Locator Technical Manual v2.0e 92