Installation Guide

performance data such as engine temperature and fault codes from heavy duty vehicle to provide the best possible real-time
picture of vehicle
health. In addition, it supports separate ARM (Advanced RISC Machine) cortex micro-controller to support hosted application
features.
The CalAmp HMU-3640™ is a mobile device that resides in private, commercial or government vehicles. The HMU-3640™ is a
single box
enclosure incorporating a processor, a GPS receiver, a wireless data modem, and a vehicle-rated power supply. The HMU-3640™
also supports
inputs and outputs to monitor and react to the vehicular environment and/or driver actions.
The HMU-3640™ collects, stores and transmits vehicular and location data over a designated wireless network including LTE
and HSPA.
Vehicular and location data are transmitted to a customized software application that has been designed to receive, acknowledge,
process, store,
and respond to this data.
Unit location and vehicular information is sent at pre-determined intervals, on demand, or when pre-programmed vehicular
conditions are met.
Transmission of data are sent immediately when in wireless network coverage and stored for later transmission when out of the
wireless coverage
area. SMS messaging can be used as an alternative or redundant communication backup.
The HMU-3640™ is designed to support a variety of custom fleet applications starting with basic automatic vehicle location and
including
applications requiring more sophisticated features such as geo-fencing, speed and mileage monitoring, third party security
monitoring, dynamic
reporting routines, and an array of exception alerts.
HMU-3640™ are sold exclusively to authorized systems integrators, software firms, and service providers who have developed
their offering
around the capabilities of the HMU-3640™. Customers are trained by CalAmp to integrate the mobile device with their system
and to assist in
support and maintenance of the devices.
Installations of HMU-3640™ are performed by CalAmp customers or contracted installers. Typical installations include hook-up
to power,
ignition, and ground. HMU-3640™s and the corresponding wiring are almost always hidden from view and general access.
Placement of the units
is usually under dashboards, in trunks or in compartments.
2 System Overview
2.1 Overview
The entire purpose behind a fleet management system is to be able to remotely contact a vehicle, determine its location or status,
and do
something meaningful with that information. This could include displaying the vehicle location on a map, performing an address
look-up,
providing real-time driving directions, updating the vehicles ETA, monitoring vehicle and driver status or dispatching the vehicle
to its next pick
up.
These functions, of course, are completely dependent on the capabilities of the vehicle management application. The role of the
CalAmp HMU-
3640™ is to deliver the location information when and where it is needed.
A typical fleet management system based on a CalAmp device includes the following components:
A wireless data network
An HMU-3640™
Host Device (GPS NMEA only)
An LM Direct™ communications server
Backend mapping and reporting software which typically includes mapping and fleet reporting functions
PULS™
LMU Manager™
https://puls.calamp.com/wiki/HMU-3640_Hardware_%26_Installation_Guide 3/27
2.2 Component Descriptions
2.2.1 Backend Software
Backend software is a customer provided software application. Regardless of its purpose one of its primary functions is to parse
and present data
obtained from the LM Direct server. This allows the application to do any of the following: