User's Manual

Sleep LMU
Processor STM32F205
App ID 321-HSPAg6
3.4.1 3-Axis Accelerometer Input
The LMU-4530™ supports an internal 3 Axis Precision Accelerometer as one of its discreet inputs.
When the LMU is moved in any direction, the associated input will be in the High state. If the LMU’s
accelerometer does not detect motion, then the input will be in the Low state. No external connections
are required for this functionality to be operational.
3.4.2 Status LEDs
The LMU-4530™ is equipped with three Status LEDs, one for GPS, one for COMM (wireless network
status) and one TBD. The LEDs use the following blink patterns to indicate service:
LED #1 (Comm LED - Orange) Definitions
Condition LED 1
Modem Off Off
Comm On - Searching Slow Blinking
Network Available Fast Blinking
Registered but no Inbound Acknowledgement Alternates from Solid to Fast Blink every 1s
Registered and Received Inbound Acknowledgement Solid
LED #2 (GPS LED - Yellow) Definitions