User's Manual
GuardianManual001‐5006‐000Rev0 9|Page
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GUARDIANOVERVIEW
ThisdocumentprovidesinformationrequiredfortheoperationandverificationoftheCalAmpGuardian
NarrowbandModem.
1.1 GENERALDESCRIPTION
ThisDSP‐basedradiowasdesignedforSCADA,telemetryandindustrialapplicationsinthe136‐174MHz,215‐240
MHzVHF,406.1‐512MHzUHF,and928‐960MHzfrequencyranges.
GuardiansupportsserialRemoteTerminalUnits(RTU)andprogrammablelogiccontrollers(PLC).TheGuardianis
compatiblewithanyDataradioInteroperability
Standard(DI‐OS)equipmentandBell202/212interface.
1.2 OPERATIONALCHARACTERISTICS
TheGuardianproducthasthefollowingoperationalcharacteristics:
Frequencyrangeof136‐174MHz,215‐240MHz,406.1‐470MHz,450‐512MHz,or928‐960MHz.
User‐selectabledatarates
Built‐intransceiveradjustablefrom1to10watts(8wattsmaxfor900MHz)
Wideinput
powerrangeof10to30voltsDC
OnlineandOfflineDiagnostics
Supportsupto8differentfrequencychannelpairs(selectablethroughuserinterfaceport).
Industrialoperatingtemperaturerangeof‐30to+60C
Ruggeddie‐castaluminumandsteelcase