CalAmp 200G Manual De Usuario
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CalAmp Proprietary & Confidential
6.1.1 Ignition and Inputs
The LMU0200G provides up to 5 external inputs and one internal. The external 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
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
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: