End Of Life; Block Diagram; Figure 4 - St100 Block Diagram - Globalstar ST100 User Manual

8545-0194-01 v1.0

2.2.3. END OF LIFE

When the unit auto activates, it calculates an end date based on its programmed lifetime. For example, if the lifetime is 3 years
(36 months) and it activates on October 24, 2020, the expiration date will be October 24, 2023.
Each time the unit obtains a GPS fix, it checks the calendar date. If the date is past the expiration date (in this example, October
25, 2023) it immediately drops out of track mode and enters end of life mode.
Once the unit has entered end of life mode, it will respond to simple queries, such as a query for its version number or tracking
state (which will be "none"), but it will NAK any command that might cause it to transmit over the Globalstar network, such as
commands to put it back into a track mode or to send a custom message.

2.3. BLOCK DIAGRAM

The ST100 is configured at the factory to cutoff charging at temperatures below -30°C and above 85°C. These cutoff points are
configurable via the "sgbattemp" command over a range of -30°C to 85°C. It is imperative that these temperatures match
those recommended for the battery or a fire hazard could result!
The battery fully charged voltage cutoff is 4.08 volts.

FIGURE 4 - ST100 BLOCK DIAGRAM

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