Installation guide

LMU Users Guide

V1.0.6 December 10 2009

- 26 - CalAmp Proprietary & Confidential

While all of the LMU products have a host port to allow users to issue AT Commands to

configure, debug and control the device, only the LMU-4100 supports external serial devices

as a peripheral. The one exception is that the LMU-2500 does support the output of NMEA

sentences on its host port.

Working with External Serial Devices

The CalAmp LMU-4100™ and LMU-2500™ supports three external serial ports for use

with other devices, though only two can be available at the same time. The serial ports are:

• The Host Port (LMU-4100™ and LMU-2500™)

• The Modem Port (LMU-4100™ only)

• The Aux Port(LMU-4100™ only)

To access these ports you would need a specific peripheral. The mapping of serial ports to

peripherals is as follows:

Port

Peripheral

Host Port

Serial Adapter

TetheredLocator Adapter

ioPOD Adapter

Bluetooth Adapter

Modem Port

TetheredLocator Adapter

Aux Port

ioPOD Adapter

The following sections describe how each of these ports can be used. Using serial ports via

the Bluetooth Adapter is described in its own section.