User Manual

4
3.2 Remote Update
The SIMBA supports OTA field upgrades of the resident application. An over the air FTP
connection is made over a n IP connection. A replacement file is then transferred from a server to
the SIMBA and that file replaces the previous application image.
3.3 Power Modes
The SIMBA device supports several power modes that are set by AT commands. In full power
mode the GPS is active and the cellular subsystem will maintain a persistent cellular connection
whenever service is available. IP connection is maintained according to the configuration of the
device.
The device can be put in low power mode whenever it runs on a backup battery or if the external
battery is low or if it is not moving. In low power mode the GPS is not running and the LED’s are
off. The device would return to full power whenever an event occurs that triggers a report.
Those events include:
 Periodic report
 GPIO change
 IP change
 Battery threshold
 Heartbeat
 Watchdog
 Power-up
 Ignition
 Trip start and stop
Any hardware or software reset will return the device to full power mode.