Installation guide

LMU Users Guide

V1.0.6 December 10 2009

- 21 - CalAmp Proprietary & Confidential

4.6

By default, the Status LEDs work as described in the Install Guides, however, it is possible

to override the default behaviors on the LMU-2500 and LMU-4100. Specifically, the Comm

LED can be over-ridden to report Input Status for inputs 0-4 and the GPS LED can be

over-ridden to provide satellite information.

Working with the Status LEDs

4.6.1 Input State and Satellite Count Mode

In this mode, the Comm LED (Orange) will alternate between Comm Status and Input

Status every 5s. The Comm Status behavior is described in the Install Guides. When

reporting the Input states, it will blink with a single pulse when the input is low and two

pulses when the input is high. After 500mS it reports the next input. The inputs are reported

sequentially starting with Input 0 and finishing with Input 4. For example, if Comm was

acquired, ignition (i.e. input 0) was on and all other inputs were low, you would see the

following pattern:

Figure 5 - Alternate Comm LED Blink Pattern