10/12/13
TTU-12x0 Hardware & Installation Guide - PULS Wiki
https://puls.calamp.com/wiki/TTU-12x0_Hardware_%26_Installation_Guide
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The Phone Number field should match the <Phone Number> value you used in step 3 or 4. The last 10 digits of the IMSI
field should match the <MSID> value you used in step 3 or 4.
5 Installing the LMU
The installation of the LMU and its antennas can have a major impact on the LMU’s performance. It is recommended that installers
be familiar with the installation of GPS and cellular devices and are comfortable in a vehicle environment.
5.1 Preparing for Installation
Be sure you have received all the LMU components you need. This must include:
The LMU to be installed
A power harness
GPS Antenna (for external devices)
Comm Antenna (for external devices)
Optional Components:
Input and output cables
Relays
LMU peripherals (i.e. Serial adapter, jPOD, TetheredLocator)
Host serial devices (e.g. PDAs, laptops, other serial devices)
5.2 Plan The Installation
Verify Power, Ground and Ignition. Be sure to check each source (power, ground and ignition) to ensure that the proper
signaling exists. This is typically accomplished with a multi-meter.
Before drilling any holes or running any wires, decide where each hardware component will be located (LMU, antennas,
peripherals, etc.). Be sure that the cables to the LMU are not bent or constricted in any way. Also make sure that the LMU is
kept free from direct exposure to the elements (sun, heat, rain, moisture etc...).
Be advised that an installation that violates the environmental specifications of the LMU will void the warranty.
The best way to ensure a trouble-free installation is to consider your options and make some decisions before you start. Take
a look at the vehicle and determine how to best install the LMU for the following purposes:
Accurate data gathering and simulation of how customers actually use your solution
Ongoing monitoring and maintenance of LMU equipment
Accidental or intentional alteration of the equipment or cable connections
The following sections cover some of the issues to consider when planning your LMU installation.
5.2.1 Size and Placement of LMU Unit
The dimensions of the LMU should be taken into account, particularly when installing in a vehicle:
Whether you intend to place the LMU under a seat or into a cavity behind the vehicle’s interior molded trim, be sure the
LMU will fit before drilling any holes or running cable
Be certain that the cables running to the LMU will not be bent or constricted. Damage to the cables may impede
