ATS L20 - L20 Tracker Functionality Details; GPS Receiver Specifications

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5 Feb 21, 2024

LED Blink Pattern Table

There are a number of events on the L20 that are indicated by flashes of color from the

onboard RGB LED.

Interaction

LED pattern

Meaning

Place magnet on Tracker

3 x Blink PURPLE

Tracker is now in Sleep Mode

Remove magnet from Tracker

5 x Blink PURPLE

Tracker has left Sleep Mode

1Hz Blinking BLUE

Tracker is searching for LTE towers

1Hz Blinking GREEN

Tracker is searching for GPS

Single YELLOW Blink

Battery is too low for LTE/GPS

Single RED Blink

Hardware error

Table 1: LED Blink Patterns

Section 5 Tracker Functionality

GPS Operation

A GPS attempt may last as long 120 seconds but may also be shorter depending on the

tracker’s view of the sky. In the case where a fix was not successfully found, the failure

reason and other metrics will be recorded for users to view.

The GPS receiver specifications are shown in table 2:

Table 2: GPS receiver specifications