User's Manual

1/28/2015 LMU42x0Hardware&InstallationGuidePULSWiki
https://puls.calamp.com/wiki/LMU42x0_Hardware_%26_Installation_Guide 18/47
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(Fixedbiashigh)
Input7:GenericDigitalInput(Fixedbiashigh)
Input8:MotionSensor
Input9:VBUSActive
Input10:PwrState
Input11:VbattLow
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
3.6.13AxisAccelerometerInput
TheLMU42x0™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.
3.6.2IgnitionandInputs
TheLMU42x0™providesupto7inputs.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10kΩ.Oneoftheseinputsisdedicatedtosensing