6/20/2014
LMU-2000 Hardware & Installation Guide - PULS Wiki
https://puls.calamp.com/wiki/LMU-2000_Hardware_%26_Installation_Guide
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3.3 I/O Descriptions
The LMU-2000™ provides the following Inputs for scripting purposes, but there are no selectable inputs on
the device
Digital Inputs
Input 0: Engine-On
Input 1: Motion Sensor (low = no motion, high = motion)
Input 2: Power State
Input 3: Battery Voltage Low
Analog to Digital Inputs
A/D 0: Vin
A/D 1: uP Temp
A/D 2: Vref
3.3.1 3-Axis Accelerometer Input
The LMU-2000™ 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.
3.3.2 Status LEDs
The LMU-2000™ is equipped with two Status LEDs, one for GPS and one for COMM (wireless network
status). 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 - Green) Definitions
