CalAmp LMU-5541 Hardware Installation Manual page 3

materials in the vicinity of ESD sensitive electronics, all conductive materials are grounded, workers are grounded, and charge build-up on ESD
sensitive electronics is prevented. International standards are used to define
typical EPA and can be obtained for example from International Electro-technical Commission (IEC) or American National Standards Institute
(ANSI).
This ESD classification of the sub assembly will be defined for the most sensitive component, therefore the following classifications apply:
Class 1B – Human Model (< 1 kV)
Class M1 – Machine Model (< 100V)
When handling the LMU-5541's™ main-board (i.e. sub assembly) by itself or in a partial housing proper ESD precautions should be taken. The
handler should be in an ESD safe area and be properly grounded.
WARNING: This product can expose you to chemicals including carbon black, nickel, & bisphenol A, which are known to the State of
California to cause cancer and birth defects or other reproductive harm. For more
information go to https://www.P65Warnings.ca.gov.
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GPS Ceramic Patch Handling
When handling the sub assembly it may be natural to pick it up by sides and make contact with the antenna boards. In an uncontrolled ESD
environment contact with the center pin of ceramic patch antenna can create a path
for electrostatic discharge directly to the GPS Module. The GPS Module is very sensitive to ESD and can be damaged and rendered non-
functional at low levels of ESD.
One should avoid contact with the center pin of the patch during handling.
Packaging
Anytime the sub assembly is shipped and it is not fully packaged in its final housing it must be sealed in an ESD safe bag.
Electrical Over-Stress (EOS)
The GPS receiver can be damaged if exposed to an RF level that exceeds its maximum input rating. Such exposure can happen if a nearby source
transmits an RF signal at sufficiently high level to cause damage.
Storage and Shipping
One potential source of EOS is proximity of one LMU-5541™ GPS Antenna to another LMU-5541™ GSM Antenna. Should one of the units be
in a transmit mode the potential exists for the other unit to become damaged.
Therefore any LMU-5541™ GPS Antenna should be kept at least four inches apart from any active LMU-5541™ GSM Antenna or any other
active high power RF transmitter with power greater than 1 Watt.
3.1.2 Battery Back-up devices
Please properly dispose of the battery in any of the CalAmp products that utilize one, do not just throw used batteries, replaced batteries, or units
containing a back-up battery into the trash. Consult your local waste
management facility for proper disposal instructions.
3.1.3 Environmental Specifications
The LMU-5541™ 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-5541™ 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.
Dimensions
5.8 x 4.0 x 1.2" (146 x 102 x 40 mm)
Weight
8oz (227g)
Temperature
-30° to +70° C (connected to primary power)
-40° to +85° C (storage)
Humidity
95% RH @ 50° C non-condensing
Shock and Vibration
U.S. Military Standard202G and 810G, SAE J1455
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EMC/EMI
IEC 61000-4-2 (4KV test)
Electromagnetic Compatibility (EMC)
EMC compliant for a ground vehicle environment SAE
Test: IEC 61000-4-2 (4KV test) Parts 2, 12, 21 and 41
Operating Voltage Range
The LMU-5541™ supports vehicles with 12 or 24 VDC systems including transients and electrical system noise; this includes ranges from 8 to
32 VDC.
Electrostatic Discharge (ESD)
No damage or performance degradation after the ESD disturbance.
SAE Test: SAE J1113 Part 13
Power Consumption
Operating Voltage