User's Manual

DRAFT TrimTrac Locator Technical Manual 24
Operation
Introduction
This chapter covers in detail the operational characteristics of the TrimTrac
locator. It is important to understand how the TrimTrac operates before factory
default settings are altered.
Operational State Machine
The TrimTrac locator operates in accordance with the state diagram shown in
Figure 1 below.
Idle
T1
Fix
T2
Status
TX
T3
Query
T5
Delay
T4
Sleep
Completed
Comms
Timeout
Motion
Wake
Query
Timeout
Motion
Wake
Comms
Success
RTC
Wakeup
or
Motion
Report Flag
Motion
Wakeup
Fix Made
or Timeout
Status
Retrieved
Invalid
Motion
T7
Motion
Report Flag
Comms
Timeout
RTC
Wake
Query
Timeout
RTC
Wake
Figure 1, TrimTrac Operational State Diagram
IDLE State
In a typical application, the TrimTrac locator spends a majority of the time in the
IDLE state. While in the IDLE state, the device monitors the motion sensor and
the RTC countdown timer, T1, is running.