User Manual

Asset-Link 4XX User Manual May 10, 2004

970-00047 Rev. 1.0

The Active Mode allows the Asset-Link to operate at different power levels based on

configurations that are programmed for specific operating requirements. In most

configurations, the Asset-Link will enter this mode from “Full-Power” immediately

upon detecting the vehicle’s switched ignition circuit going to OFF (normally applied

to one of the digital inputs). In most cases the Asset-Link is configured to prevent the

device from remaining ON for a protracted period of time and depleting the asset

power (battery) after the ignition is turned OFF. This can be achieved by a proper

configuration of timers, V

SUPPLY

threshold, action groups etc. If vehicle battery

voltage is used for mode transition, be aware that the voltage can drop below 11.0v

during vehicle start. The voltage will normally rise above 13.8v immediately after

engine starts. Voltage transients of ±3.5v are not unusual on diesel engines during

engine start.

In some applications, issuing an alerting message to the application when entering

Active mode from “Sleep” is recommended so that the host is notified that the client

device is able to receive messages.

While in the Active mode, the device shall continue to support all routines and

activities supported in the Full Power mode:

• GPS (fix updates, constraint regions, constraint groups)

• Cellular and GSM modules (listening for any pages, packet data, calls or SMS

messages from the host when Ears-On)

• Check power supply voltage

• Check digital, analog and LCP inputs.

• Data Log and Batch Processor

• Timer, Event Monitor and Exception Handler

• Action Scheduler

• Action Processor