Cal Amp LMU-4200 Hardware And Installation Manual

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LMU-4200™

Hardware and

Installation Guide

Short Version

June, 2001

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LMU-4200™ Hardware and Installation Guide

Table of Contents

Table of Contents................................................................................................................................................... ii

1 INTRODUCTION.................................................................................................................................................................................................1

1.1 About This Manual.......................................................................................................................................1

1.2 About the CalAmp Location Messaging Unit-4200™ (LMU-4200™)...................................................... 2

1.2.1 Environmental Specifications ................................................................................................................2

1.3 LMU-4200™Connectors...............................................................................................................................4

1.3.1 Power Connector ...................................................................................................................................5

1.3.2 I/O Connector ........................................................................................................................................6

1.3.3 Serial Interface Connectors....................................................................................................................7

1.3.4 Expansion Interface ...............................................................................................................................8

1.4 GPS Receiver...............................................................................................................................................10

1.5 RF Connector...............................................................................................................................................10

1.6 Available Radio Interfaces .........................................................................................................................10

2 INSTALLING THE LMU....................................................................................................................................................................................11

2.1 Preparing for Installation...........................................................................................................................11

2.2 Plan The Installation...................................................................................................................................12

2.2.1 Size and Placement of LMU Unit........................................................................................................12

2.2.2 Placement of Antennas ........................................................................................................................13

2.2.3 Comm Antenna Placement Guidelines ................................................................................................13

2.2.4 GPS Antenna Placement Guidelines....................................................................................................13

2.2.5 Access to the SIM (Subscriber Identity Module) Card........................................................................14

2.2.6 Protection from Heat............................................................................................................................14

2.2.7 Visibility of Diagnostic LEDs .............................................................................................................14

2.2.8 Cable Length........................................................................................................................................15

2.2.9 Moisture and Weather Protection ........................................................................................................15

2.2.10 Preventing Accidental or Unauthorized Modification ....................................................................15

2.3 Installing the LMU in a Vehicle.................................................................................................................16

2.3.1 Place the LMU unit in the vehicle. ......................................................................................................16

2.3.2 Connect power, ignition, and ground...................................................................................................16

2.3.3 Place the GPS antenna. ........................................................................................................................16

2.3.4 Mount the Comm. Antenna. ................................................................................................................17

2.3.5 Typical Connection Sequence..............................................................................................................18

2.4 I/O Descriptions...........................................................................................................................................20

2.4.1 Ignition and Inputs...............................................................................................................................21

2.4.2 3-Axis Accelerometer Input.................................................................................................................23

2.4.3 Outputs.................................................................................................................................................23

2.4.4 Status LEDs .........................................................................................................................................24

Verification via SMS .........................................................................................................................................25

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LMU-4200™ Hardware and Installation Guide

1 Introduction

Welcome to the LMU-4200™ Hardware and Installation Guide. This manual is intended to provide information on the basic setup and installation of the CalAmp LMU-4200™ product including hardware descriptions, environmental specifications, wireless network overviews and device installation.

1.1 About This Manual

The LMU-4200™ is one of the most flexible and economical mobile tracking hardware products available. In order to accurately describe the functionality of these units we have broken this manual into the following sections:

 System Overview: A basic description of a CalAmp LMU-4200™ based tracking

system. This includes a description of roles and responsibilities of each of the CalAmp components as well as a brief overview of the wireless data technologies used by the LMU-4200™.

 Hardware Overview: Describes the physical characteristics and interfaces of the

LMU-4200™.

 Installation and Verification: Provides guidance for the installation of the LMU-

4200™ in a vehicle and instructions on how to verify the installation is performing adequately.

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1.2 About the CalAmp Location Messaging Unit-4200™ (LMU-4200™)

CalAmp's flagship LMU-4200™ product has the features, expandability, and flexibility with the intelligence to meet all customers’ ever changing needs in fleet management. The LMU4200™ offers a full set of features, comprehensive I/O system and expandable accessories that make it an industry leading value proposition. The LMU-4200™ expandability and flexibility lowers the cost of delivering, supporting, and growing fleet management solutions.

The LMU-4200™ is designed to support customers needing an array of vehicle interfaces. For example, the serial ports supply switchable power at selectable voltages to ease the installation of peripheral data devices. The optional jPOD™ ECU (Engine Control Unit) interface reads and transmits heavy-duty engine condition and performance data such as engine temperature along with the fault codes to provide the best possible real-time picture of vehicle health. In addition, the LMU-4200™ offers optional WiFi and Bluetooth capabilities.

The LMU-4200™ also incorporates CalAmp's industry leading over-the-air device management and maintenance system software, , PULS™ (Programming, Updates, and Logistics System). Configuration parameters, PEG rules, and firmware can all be updated over the air. Our web-based maintenance server, PULS™ scripts, and firmware, can all be updated over-the-air. PULS™ offers out-of-the-box hands free configuration and automatic post-installation upgrades. You can also monitor unit health status across your customers' fleets to quickly identify issues before they become expensive problems.

1.2.1 Environmental Specifications

The LMU-4200™ is designed to operate in environments typically encountered by fleet vehicles, including wide temperature extremes, voltage transients, and potential interference from other vehicle equipment.

To ensure proper operation in such an environment, the LMU-4200™ was subjected to standard tests defined by the Society of Automotive Engineers (SAE). The specific tests included temperature, shock, vibration, and EMI/EMC. These tests were performed by independent labs and documented in a detailed test report. In accordance with Appendix A of SAE J1113 Part 1, the Unit is considered a “Functional Status Class B, Performance Region II” system that requires Threat Level 3 Testing.

The following shows the environmental conditions the LMU is designed to operate in and the relevant SAE tests that were performed. No formal altitude tests were conducted.

Size

4.8" long x 3.3" wide x 0.85" high

Weight

11 ounces.

Operating Temperature

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C to 70o C

-30

Storage Temperature Range:

-40

C to 85o C

Humidity

0% to 95% relative humidity, non-condensing

Shock and Vibration

Ground vehicle environment with associated shock and vibration SAE Test: SAE J1455 Mil Standard 202G and 810F

Electromagnetic Compatibility (EMC)

EMC compliant for a ground vehicle environment SAE Test: SAE J1113 Parts 2, 12, 21 and 41

Operating Voltage Range

The LMU-4200™ supports vehicles with 12 or 24 VDC systems including transients and electrical system noise; this includes ranges from 6 to 32 VDC.

Electrostatic Discharge (ESD)

No damage or performance degradation after the ESD disturbance. SAE Test: SAE J1113 Part 13

Power Consumption

Average: 70mA at 13.8 VDC Deep Sleep: 4mA Sleep on Network (SMS): 10mA Sleep on Network (GPRS): 20mA

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1.3 LMU-4200™Connectors

The LMU-4200™ offers 5 connectors to access power, I/O, serial communications and other expansion capabilities. These connectors are:

 Primary Power Connector  I/O Connector  Serial Port Connector – Host/Aux1  Serial Port Connector – Aux 2  Expansion Connector

Figure 1 - LMU-4200™ Connectors

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1.3.1 Power Connector

The LMU-4200™ uses a 4 pin Molex 43045-0402 connector as its power connection. The pin out is as follows:

Pin Signal Name Description Input or Output

1 VIN Power Power / Input 2 GND Ground Ground 3 INPUT 0 Input 0 / Ignition Sense –

Digital Input

4 ADC1 Analog to Digital Input 1 Input

Input

Figure 2 - LMU-4200™ Header (looking into LMU)

CalAmp offers a fused, 4-wire, 8 foot harness that mates to this connector (Part Number 5C888)

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1.3.2 I/O Connector

The LMU-4200™’s features expanded I/O capabilities via its 22-Pin Molex 43045-2202 connector. Its pin-out is as follows:

Pin Signal Name Description Standard Cable Color Input or Output

1 Input 1 Input 1 – Digital Input Blue Input 2 Input 2 Input 2 – Digital Input Orange Input 3 Input 3 Input 3 – Digital Input Violet Input 4 Input 4 Input 4 – Digital Input Gray Input 5 Input 5 Input 5 – Digital Input Green & White Input 6 Input 6 Input 6 – Digital Input Blue & White Input 7 Input 7 Input 7 – Digital Input Black & White Input 8 1BB T Data 1 Bit Bus Data (T) Green & Black Input/Output 9 1BB GND 1 Bit Bus Ground Black Ground 10 1 BB R Data 1 Bit Bus Data (R) Orange & Black Input/Output 11 1 BB Gnd 1 Bit Bus Ground Black Ground 12 Output 0 Green Output 13 Output 1 Brown Output 14 Output 2 Yellow Output 15 Output 3 Blue & White & Orange Output 16 Output 4 Green & Black & Orange Output 17 LED 1 Red & Green Output 18 LED 2 Orange & Green Output 19 ADC 2 Black & Red Input 20 ADC 3 White & Red Input 21 ADC 4 Orange & Red Input 22 ADC 5 Blue & Red Input

Figure 3 - LMU-4200™ Header (looking into LMU)

CalAmp offers a 6”, 20 wire harness assembly for this connector (Part Number5C889)

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1.3.3 Serial Interface Connectors

The LMU-4200™ offers 2 serial interface connections (Host/Aux1 and Aux 2) on its front face. These are provided via 2 Molex 43650-0501 connectors using the following pin outs.

Pin Signal Name Description Input or Output

1 VIN_FILT Filtered LMU Power Power Supply 2 VCC3V3 3.3V Power Power Supply 3 Ground Ground Ground 4 TX Transmit Data Input to LMU 5 RX Receive Data Output From LMU

Figure 4 – Serial Interface Connector

Users should only use CalAmp approved serial adapters with these connections. (Part Number 133337-5 and 133564-1)

Figure 5 - LMU-4200™ Serial Cable Plugged into Aux 1

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1.3.4 Expansion Interface

The expansion interface located on the back of the LMU-4200™ via the 16-in Molex connector is used to extend I/O functions and provide serial access to the LMU-4200™. It should only be used with CalAmp expansion harnesses. The available accessories are:

1.3.4.1 jPOD™ Vehicle Bus Adaptor

The CalAmp jPOD Adapter is a J1939 compliant device that reads the parameters broadcast in the J1939 bus, processes them and provides filtered vehicle data to the LMU-4200™.

A script is written using a special software tool and loaded into the jPOD. This script defines the specific parameters (PGNs/SPNs) to read, how to process them and how to send them to the host. The script does not send any requests onto the bus.

Selected J1939 Parameters

Battery Potential / Power Input 1 65271 168 Engine Coolant Temperature 65262 110 Engine Speed RPM 61444 190 Vehicle Speed 65265 84 Accelerator Pedal Position % 61443 91 Brake Pedal Switch - On/Off 65265 597 Total Vehicle Distance 65248 245 Engine Total Fuel Used 65257 250 Diesel Particulate Filter Status 64892 3701 DM1 (Diag Msg 1 - active DTC’s) 65226

 PGN SPN

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Size

3.5" long x 1.7" wide x 0.9" high Total length with cable: 12.7”

Weight

2.3 ounces

Power Consumption

Average: 70mA at 13.8 VDC

Diagnostic tools used by CalAmp:

J1939 simulator from oZen Electronics J1939 Scan from OBD Diagnostics, INC - http://www.j1939scan.com

Pin outs for the J1939 signals on the DE15 pin connector:

Pin 1 - Power Pin 2 - CAN Low Pin 3 - CAN Hi Pin 15 - GND

Figure 6 jPOD™ Vehicle Bus Adaptor

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1.4 GPS Receiver

50 channel GPS receiver (with SBAS, DGPS) Accuracy: 2 meter CEP (with SBAS) Antenna connector: SMA Tracking Sensitivity: -160dBm Acquisition Sensitivity: -144dBm Note that the CalAmp LMU-4200™ requires an antenna amplifier that operates at 3VDC; 5VDC amps will not work.

1.5 RF Connector

LMU-4200’s™ uses an SMC connector with a 50 Ω iimpedance.

1.6 Available Radio Interfaces

 CDMA 1xRTT – Bell Mobility ( Part Number: LMU42C1B1-G1000)  CDMA 1xRTT – Sprint ( Part Number: LMU42C1S1-G1000)  CDMA 1xRTT – Verizon Wireless ( Part Number: LMU42C1V1-G1000)  GPRS (Part Number: LMU42G101-G1000)  HSPA (Part Number: LMU42GH101-G1000)

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2 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.

2.1 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  Comm Antenna  Optional Components:

o Input and output cables o Relays o LMU peripherals (i.e. Serial adapter, ioPOD, BTA, TetheredLocator) o Host serial devices (e.g. PDAs, laptops, other serial devices)

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2.2 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.

2.2.1 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 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 LMU-4200™.

Typical installations will place the LMU under the vehicle dash board, or in the trunk. Make sure you can get access to the unit afterwards as under some circumstances it may be necessary to add additional wiring or connections to the LMU.

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2.2.2 Placement of Antennas

There are effectively three options for placements of an antenna:

 Roof-mount (magnetic or thru-hole)  Glass-mount  Covert (e.g. under the seat, dash, etc…)

2.2.3 Comm Antenna Placement Guidelines

The Comm. Antenna must be located at least 20cm away from vehicle passengers, other personnel, or bystanders in order to comply with FCC radio frequency exposure limits.

Typically, the Comm antenna used by the LMU for wireless service is a standard 3-dB gain whip. It mounts with standard mounts (i.e. thru-hole, magnetic mount or peel and stick) and requires a ground plane to work properly. If possible, it should be located at least 3 feet from the GPS antenna. Ensure that the cable does not get crushed during installation.

Please note that the antennas provided by CalAmp combine both the GPS and Comm portions.

2.2.4 GPS Antenna Placement Guidelines

In order to maximize the performance of the LMU the GPS antenna should have a clear view of the sky. When installing the GPS antenna on a vehicle, make sure that there are no

obstructions close to the antenna that might block the view 360 to the horizon. Things like air horns, lights, vents, etc… should not block the antenna beyond 5 above the horizon.

The best location is usually near the center of the roof; however it is also desirable to locate the cellular antenna as far from the GPS antenna as is practical.

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7 Examples of good and poor GPS antenna placements

The received signal levels at the GPS antenna from the satellites are very low in power (approximately -136 dBm), so any blockage of the antenna can affect the quality of the location computed by the receiver. Kinks or tight knots in the antenna cable can also prevent the GPS receiver from operating properly. When laying out the antenna cable, care should be taken so that the cable is not subjected to crushing or strain.

2.2.5 Access to the SIM (Subscriber Identity Module) Card

When used in a GSM or HSPA network, each LMU uses a Subscriber Identity Module (SIM) card, which should be inserted before you install the LMU for the first time. The SIM card is attached to the main-board inside the housing of the LMU unit.

At some future time, you might need or want to replace the SIM card with a different one, so try to install the LMU in such a way that the cover can be removed to make the SIM card accessible.

2.2.6 Protection from Heat

It is best not to place the LMU unit in an unusually warm location such as directly near heater vents, near hot engine components or in direct sunlight. The maximum temperature that can be tolerated by the LMU is described in the LMU Environmental Specifications section.

2.2.7 Visibility of Diagnostic LEDs

Status LED lights on the front of the LMU unit can provide valuable information about the operation of the LMU. When feasible, attempt to install the LMU in such a way that these lights can be seen with reasonable ease.

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You may find it useful to be able to view the LEDs periodically to make sure that the LMU is operating properly. If at any time you should encounter a problem with the LMU, you may need to read the LEDs in order to troubleshoot the problem. If you cannot fix the LMU yourself, you will need to provide the LED information to CalAmp customer support.

For information about how to interpret the LEDs, see the Status LED Behavior section.

2.2.8 Cable Length

The RF cables which are provided for connecting to the LMU antennas should be used at the length provided. Do not cut cables. Instead, coil any excess cable length, making sure not to crimp or flatten the antenna cable.

2.2.9 Moisture and Weather Protection

The LMU unit must be located where it will not be exposed to moisture or water. In a typical installation inside a vehicle this is not commonly thought to be a concern; however, it might be best to avoid locating the LMU below a car’s cup holders, or where rain might easily splash into the compartment when a door is opened.

2.2.10 Preventing Accidental or Unauthorized Modification

If you anticipate that fleet drivers or others might interfere with the LMUs once they are installed, take steps to be sure that it is not easy to disconnect the antenna wiring, remove the LMU from its power source, etc. Two common methods are the use of Tamper Proof Sealant or creation of PEG Script to detect power loss or GPS antenna disconnections.

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2.3 Installing the LMU in a Vehicle

This section provides instructions for installing an LMU in a vehicle.

Be sure to consider the design decisions described in the previous sections. When you are ready to begin installing the LMU, follow these steps:

2.3.1 Place the LMU unit in the vehicle.

Typically, the LMU should be placed under the passenger seat or dashboard of the vehicle. Attach the LMU to the solid body of the vehicle, not to plastic panels. The LMU can be placed out of sight by removing interior trim and molding to expose available space, then replacing the trim once the LMU is in place.

2.3.2 Connect power, ignition, and ground.

The power input (red wire) must be connected to a constant (un-switched) +12 VDC or +24 VDC supply; preferably, connected directly to the vehicle battery terminal or as close to it as possible. This connection point should be fuse protected to not more than 5 Amps. The ignition input (white wire) must be connected to the vehicle ignition or another appropriate key operated line, such as ACCESSORY, ensuring that power to the ignition wire is available only when the vehicle ignition is on. The ground line (black wire) must be connected to chassis ground.

Failure to connect these lines in the manner described may result in discharge of the vehicle battery.

For best results, it is strongly recommended that the LMU connection be on its own circuit. Connect the power input directly to the vehicle battery if possible and protect the circuit with an inline fuse. If you must connect through the fuse box, use standard commercial wiring practices to create a permanent installation rather than using press-in fuse clips or other temporary measures.

DO NOT connect the power cable to the LMU at this time.

2.3.3 Place the GPS antenna.

The GPS antenna must have a clear view of the sky. Mount the GPS antenna on the vehicle’s highest point (for example, the roof of a car). Make sure that there are no obstructions close to the antenna that might block the view 360° to the horizon. Air horns lights, vents, etc.. should not block the antenna beyond 5° above the horizon.

Kinks or knots in the antenna cable can prevent the GPS receiver from operating properly. When laying out the antenna cable, take care that the cable is not subjected to crushing or strain.

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The ideal location is typically near the center of the vehicle’s roof. However, it is also desirable to locate the cellular antenna as far from the GPS antenna as possible.

Figure 8 - GPS Antenna Location

2.3.4 Mount the Comm. Antenna.

When using separate Comm and GPS antennas, it is best to locate the Comm. Antenna at least 3 feet from the GPS antenna. Ensure that the cable is not crushed during installation or normal vehicle operation.

Again, the Comm. Antenna must be located at least 20cm away from vehicle passengers, other personnel, or bystanders in order to comply with FCC radio frequency exposure limits.

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Figure 9 - Window Mount Antenna Location

2.3.5 Typical Connection Sequence

 Attach the cable from the GPS antenna.  Connect the cable from the Comm.. antenna  Connect any peripherals to the LMU  Plug in the power harness.

The physical installation of the LMU hardware is now complete.

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Figure 10 - Completed Install

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2.4 I/O Descriptions

The LMU-4200™ provides the following inputs and outputs (I/O):

Digital Inputs

Input 0: Ignition Sense (Always biased low) Input 1: Generic Digital Input (Biased high or low/ S-158 Bit 1) NOTE: Shared with Output 1. Function selection controlled by S-159 Input 2: Generic Digital Input (Biased high or low/ S-158 Bit 2) NOTE: Shared with Output 2. Function selection controlled by S-159 Input 3: Generic Digital Input (Biased high or low/ S-158 Bit 3) Input 4: Generic Digital Input (Biased high or low/ S-158 Bit 4) Input 5: Generic Digital Input (Biased high or low/ S-158 Bit 5) Input 6: Generic Digital Input (Biased high or low/ S-158 Bit 6) Input 7: Generic Digital Input (Biased high or low/ S-158 Bit 7) Input 8: Motion Sensor

Analog to Digital Inputs

A/D 0: External Power Supply Monitor A/D 1: Generic External Analog to Digital Input A/D 2: Generic External Analog to Digital Input A/D 3: Generic External Analog to Digital Input A/D 4: Generic External Analog to Digital Input A/D 5: Generic External Analog to Digital Input A/D 6: <TBD> A/D 7: GPS Antenna Monitor

Outputs:

Output 0: Standard Open Collector Relay Output Output 1: Standard Open Collector Relay Output Output 2: Standard Open Collector Relay Output Output 3: Standard Open Collector Relay Output Output 4: Standard Open Collector Relay Output

LED Drivers

Output 5: Standard LED Driver Output 6: Standard LED Driver

iButton / 1 Bit Bus

iButton ID Support 1Wire bus with current boost for temperature sensors

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2.4.1 Ignition and Inputs

The LMU-4200™ provides up to 4 inputs on its own and up to 7 with the ioPOD. These inputs are protected from typical vehicle transients and can be directly connected to most vehicle level logical inputs from 4 volts up to the vehicle power input level (typically 12

VDC). Their input impedance is approximately 10k. One of these inputs is dedicated to sensing the vehicle’s ignition status to provide for flexible power management. The other two inputs may be used to sense vehicle inputs such as cooling unit operation, a hidden driver “Panic” switch, taxi on-duty/off-duty meter status or many others.

The ignition input is pulled to ground through the 10k resistance, where the other inputs can be configured to be normally High (i.e. pulled to +12v through a 10k resistor) or Low (i.e. pulled to ground through a 10k resistor). The diagrams below show how to connect the inputs in both a high- and low-biased configuration:

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Figure 11 - Sample Input Wiring

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2.4.2 3-Axis Accelerometer Input

The LMU-4200™ supports an internal 3 Axis Precision Accelerometer as one of its discreet inputs. When the LMU is moved in any direction, the associated input will be in the High state. If the LMU’s accelerometer does not detect motion, then the input will be in the Low state. No external connections are required for this functionality to be operational.

2.4.3 Outputs

The LMU’s and ioPOD;s outputs are designed to drive external relays. These outputs provide a high-current, open-collector driver that can sink up to 150 mA each. These drivers may be used to drive external relays that can then control vehicle functions such as door locks, fuel shut-off valves, sirens and lights. If additional current is required to drive the relays, external circuitry can be added to source the current. This diagram is a typical use of an output to drive a relay.

Vehicle Power

(+12VDC)

LMU

86 87

Relay

Coil

Output 0

Ground

Figure 12 - Sample Relay Wiring

Relay

Contacts

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2.4.4 Status LEDs

The LMU-4200™ is equipped with two Status LEDs, one for GPS and one for COMM (wireless network status). The LEDs use the following blink patterns to indicate service:

LED #1 (Comm LED - Orange) Definitions

Condition LED 1

Modem Off Off Comm On - Searching Slow Blinking Network Available Fast Blinking Registered but no Inbound Acknowledgement Registered and Received Inbound Acknowledgement

Alternates from Solid to Fast Blink every 1s Solid

LED #2 (GPS LED - Yellow) Definitions

Condition LED 1

GPS Off Off GPS On Slow Blinking GPS Time Sync Fast Blinking GPS Fix Solid

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Verification via SMS

The current Comm, GPS and Inbound status of either a CDMA or GSM LMU can be obtained via SMS provided you have access to an SMS capable phone or PDA.

Using your handset, send the following SMS Message to the LMU:

!R0

Within a few minutes, the LMU should return a response in the following format:

APP: <App ID> <Firmware Version> COM:<RSSI> [./d/D][./a/A][./L][IP address] [<APN>] GPS:[Antenna <Short/Open/Off>] | [No Time Sync] | [<FixStatus> <Sat Count>] INP:<inputs states> <vehicle voltage> MID:<mobile ID> <mobile ID type> INB:<inbound IP address>:<inbound port> <Inbound Protocol (LMD/LMX)>

 APP:

o <App ID>:

The Application ID value of the LMU indicating the host platform and the wireless networking technology of the LMU.

o <Firmware Version>:

The current firmware version in use by the LMU

 COM:

o <RSSI>:

This is the signal strength the wireless modem sees from the network. In general the LMU is at least scanning for the network if the RSSI is not -113.

o [./d/D]:

If the character ‘D’ is present, it indicates the LMU had a data session established when it responded to the status request. For the 8-Bit product line an upper case ‘D’ indicates both the Inbound and Maintenance sockets are ready. The lower case ‘d’ indicates that only the Maintenance socket is ready. A ‘.’ indicates no sockets are ready.

o [./a/A]:

This field indicates if the LMU has received an Acknowledgement from the Inbound server. This field will be empty if the LMU has never received an ACK.The lower case ‘a’ will be present if it has received an ACK since the last cold boot (i.e. power cycle) but not the last warm boot (App Restart or Sleep). The upper case ‘A’ will be present if the LMU has received an ACK since the last warm boot. A ‘.’ Indicates no acknowledgement has been received.

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o [./L]:

This field indicates if the LMU’s log is currently active. An ‘L’ indicates that the log is currently in use (i.e. one or more records have been stored) where a ‘.’ indicates the log is inactive.

o [IP Address]:

This is an optional field if and is only present if the LMU has established a valid data session. This field will contain the current IP address of the LMU as assigned by the wireless network. Note that if you see a value of 192.168.0.0, this is an indication that the LMU has not been able to establish a data session.

o [<APN>]

The current Access Point Name in use by a GSM LMU.

 GPS:

o [Antenna <Short/Open/Off>]:

This field, if present, indicates a problem with the LMU’s GPS antenna. A value of Short indicates that the antenna cable has likely been crushed. A value of Open indicates that the antenna cable is either cut or disconnected. A value of Off indicates that the LMU’ GPS receiver is off.

o [No Time Sync]:

If this field is present, it indicates that the LMU’s GPS receiver has not been able to find even a single GPS satellite. This would likely been seen in conjunction with the above antenna error, or if the LMU GPS antenna is otherwise blocked

o [<FixStatus> <Sat Count>]:

If these fields are present it indicates that the LMU has, or had a valid GPS solution. The <Sat Count> field indicates how many GPS satellites are currently in use by the LMU. The <FixStatus> field indicates the type of fix. The Fix Status types are detailed in the LM Direct Reference Guide.

 INP:

o <input states>:

This field details the current state of each of the LMU’s discreet inputs. This field is always 8 characters long. The left most character represents the state of input 7 where the right most represents the state of input 0 (i.e. the ignition). A value of 1 indicates the input is currently in the high state. A value of 0 indicates it is currently in the low state.

o <vehicle voltage>:

This field will contain the current reading of the LMU’s internal A/D. This will be the supply voltage provided to the LMU in mV.

 MID:

o <mobile ID>:

This will be the current mobile ID in use by the LMU.

For example you may see this if the vehicle is in a garage when the LMU is powered up.

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o <mobile ID type>:

This will be the type of Mobile ID in use by the LMU. The available types are, Off, ESN, IMEI, IMSI, USER, MIN and IP ADDRESS.

 INB:

o <inbound IP address>:

This is the current IP address in use by the LMU. This value should match the IP address of your LM Direct server.

o <inbound port>:

This is the current UDP port the LMU will use to deliver its LM Direct data. This value should match UDP port you are using on your LM Direct server. It is typically 20500.

o <Inbound Protocol (LMD/LMX)>:

This is the current UDP/IP messaging protocol in use by the LMU. In general it should be LMD.

Example CDMA Response:

APP:082 8.3d COM:-81 D A 10.73.72.105 GPS:3D-INVLD 0 INP:11100111 13.6V MID:4141000100 ESN INB:207.7.101.227:20500 LMD

Example GSM Response

APP:081 8.3d COM:0 GPS:No Time Sync INP:11100111 13.7V MID:4141000100 ESN INB:207.7.101.227:20500 LMD

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Cal Amp LMU-4200 Hardware And Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual