CalAmp 3640HEB Manual De Usuario
9/27/2017
LMU-3640 Hardware & Installation Guide - PULS Wiki
https://puls.calamp.com/wiki/LMU-3640_Hardware_%26_Installation_Guide
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4.6.7 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
remove the LMU from its power source, or disrupt internal antenna interference.
Two common methods are the use of Tamper Proof Sealant or creation of PEG Script to detect power loss or GPS antenna disconnections.
remove the LMU from its power source, or disrupt internal antenna interference.
Two common methods are the use of Tamper Proof Sealant or creation of PEG Script to detect power loss or GPS antenna disconnections.
4.7 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:
4.7.1 Place the LMU unit in the vehicle.
Typically, the LMU should be placed under the passenger seat or dashboard of the vehicle. LMUs with internal antennas should be placed to
maximize their GPS performance. A typical location include under the dash close to the front wind-shield.
maximize their GPS performance. A typical location include under the dash close to the front wind-shield.
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.
to expose available space, then replacing the trim once the LMU is in place.
4.7.2 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.
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.
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.
4.7.3 Typical Connection Sequence
Connect any peripherals to the LMU
Plug in the power harness.
Plug in the power harness.
The physical installation of the LMU hardware is now complete.
4.8 Installation Verification
In many cases it is desirable to verify that an installed LMU-3640™ is working properly. That is, installers should verify that the GPS and
communications functions of the LMU-3640™ are working properly before departing the installation site. In more robust cases, some key
configuration settings such as the Inbound Address and URL should also be verified.
communications functions of the LMU-3640™ are working properly before departing the installation site. In more robust cases, some key
configuration settings such as the Inbound Address and URL should also be verified.
Note that these processes are all based on issuing AT Commands to the LMU-3640™. It is expected that installers will have access to a serial port
expansion cable and a laptop or PDA capable of a terminal connection. Alternatively, an SMS message can be sent to an LMU-3640™ to obtain
its current status.
expansion cable and a laptop or PDA capable of a terminal connection. Alternatively, an SMS message can be sent to an LMU-3640™ to obtain
its current status.
4.8.1 Comm Verification
Installers should first verify that the LMU-3640™ has been acquired and has registered to the wireless network. This may be verified in one of
two ways. First, installers may look at the Comm LED (i.e., the one closest to the SMC antenna connector). If this LED is solid, then the LMU has
registered to the network and established a data session.
two ways. First, installers may look at the Comm LED (i.e., the one closest to the SMC antenna connector). If this LED is solid, then the LMU has
registered to the network and established a data session.
If the LED is not visible, then Comm may be verified using an AT Command: