Installation Guide

AT$APP PARAM 2306,1,“myAPN.myOperator.com”
AT$APP PARAM 2314,0,“myUSername” (only if required by the carrier)
https://puls.calamp.com/wiki/HMU-3640_Hardware_%26_Installation_Guide 15/27
AT$APP PARAM 2315,0,“myPassword” (only if required by the carrier)
ATS155=1 (to disable APN auto-provisioning)
To clear the APN, the following command can be used:
AT$APP PARAM 2306,0,“”
AT$APP PARAM 2306,1,“”
Only enter this next command if you have been given a non-zero PIN as any errors may lock you out of the modem.
AT$APP PIN <SIM pin>
You can confirm activation by watching the Comm LED to see if it goes solid. You may also confirm activation by entering AT
command
AT$APP COMM STATUS? or ATIC
The activation sequence for an LTE Verizon modem would therefore look as follows:
The HMU must be registered on the Verizon network. Having the device roaming or in poor Verizon coverage will not allow the
execution of the
activation process.
The activation is an automatic process where Verizon pushes the APN to the modem.
In some cases, there might be a delay up to 15 minutes until the unit gets activated and is able to make a data call.
For Verizon LTE, parameter 2306 (APN) is currently disabled.
You can confirm activation by watching the Comm LED to see if it goes solid. You may also confirm activation by entering AT
command
AT$APP COMM STATUS? or ATIC
5.3 Preparing for Installation
Be sure you have received all the HMU components you need. This must include:
The HMU to be installed
A power harness
12 Pin deutch I/O connector
Optional Components:
Input and output cables
Relays
HMU peripherals (i.e. Serial adapter, jPOD, TetheredLocator)
Host serial devices (e.g. PDAs, laptops, other serial devices)
5.4 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 (HMU, antennas,
peripherals, etc.). Be
sure that the cables to the HMU are not bent or constricted in any way. Also make sure that the HMU 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 HMU 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 HMU for the following purposes:
Accurate data gathering and simulation of how customers actually use your solution
Ongoing monitoring and maintenance of HMU equipment
Accidental or intentional alteration of the equipment or cable connections
https://puls.calamp.com/wiki/HMU-3640_Hardware_%26_Installation_Guide 16/27
The following sections cover some of the issues to consider when planning your HMU installation.
5.4.1 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 the LMU’s
performance.
Be certain that the installation point will not violate any of the LMU’s environmental specification (temperature, moisture, etc…)
as
improper installation of the LMU may void the warranty.
See the LMU Environmental Specifications for the exact measurements and specifications of the HMU-3640™.