Axis M32-LVE Series - Page 53

AXISM32-LVENetworkCameraSeries
Thedeviceinterface
Detectors
Camera Camera
Camera
tampering tampering
tampering
Thecameratamperingdetectorgeneratesanalarmwhenthescenechanges,forexamplebecausethelensis
covered,sprayedorseverelyputoutoffocus,andthetimeinT T
T
rigger rigger
rigger
after after
after
haspassed.Thetamperingdetectoronly
activateswhenthecamerahasnotmovedforatleast10seconds.Duringthisperiodthedetectorsetsupascene
modeltouseasacomparisontodetecttamperingincurrentimages.Forthescenemodeltobesetupproperly,
makesurethatthecameraisinfocus,thelightingconditionsarecorrect,andthecameradoesnʼtpointatascene
thatlackscontours,forexampleablankwall.Cameratamperingcanbeusedasaconditiontotriggeractions.
T T
T
rigger rigger
rigger
after after
after
:Entertheminimumtimethatthetamperingconditionsmustbeactivebeforethealarmtriggers.This
canhelppreventfalsealarmsforknownconditionsthataffecttheimage.
T T
T
rigger rigger
rigger
on on
on
dark dark
dark
images images
images
:Itisverydifculttogeneratealarmswhenthecameralensissprayed,sinceitisimpossible
todistinguishthateventfromothersituationswheretheimageturnsdarkinasimilarway,forexamplewhenthe
lightingconditionschange.Turnonthisparametertogeneratealarmsforallcaseswheretheimageturnsdark.
Whenitʼsturnedoff,thedevicedoesnʼtgenerateanyalarmwhentheimageturnsdark.
Videoout
Accessories
I/O I/O
I/O
ports ports
ports
Usedigitalinputtoconnectexternaldevicesthatcantogglebetweenanopenandclosedcircuit,forexamplePIR
sensors,doororwindowcontacts,andglassbreakdetectors.
UsedigitaloutputtoconnectexternaldevicessuchasrelaysandLEDs.Youcanactivateconnecteddevicesthrough
theVAPIX®ApplicationProgrammingInterfaceorinthedeviceinterface.
Port Port
Port
Name Name
Name
:Editthetexttorenametheport.
Direction Direction
Direction
:
indicatesthattheportisaninputport.indicatesthatitʼsanoutputport.Iftheportis
congurable,youcanclicktheiconstochangebetweeninputandoutput.
Normal Normal
Normal
state state
state
:Click
opencircuit,andforclosedcircuit.
Current Current
Current
state state
state
:Showsthecurrentstateoftheport.Theinputoroutputisactivatedwhenthecurrentstateis
differentfromthenormalstate.Aninputonthedevicehasanopencircuitwhenitʼsdisconnectedorwhen
thereisavoltageabove1VDC.
注
Duringrestarttheoutputcircuitisopen.Whentherestartiscomplete,thecircuitgoesbacktothenormal
position.Ifyouchangeanysettingsonthispage,theoutputcircuitsgobacktotheirnormalpositions
regardlessofanyactivetriggers.
Supervised Supervised
Supervised
:Turnontomakeitpossibletodetectandtriggeractionsifsomeonetamperswiththeconnection
todigitalI/Odevices.Inadditiontodetectingifaninputisopenorclosed,youcanalsodetectifsomeonehas
tamperedwithit(thatis,cutorshorted).Tosupervisetheconnectionrequiresadditionalhardware(end-of-line
resistors)intheexternalI/Oloop.
Logs
Reports Reports
Reports
and and
and
logs logs
logs
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