Code Blue IP2501-s - Page 17

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GU-137-Hpage 17 of 67
IP1500 and IP2500 Series
Administrator Guide
Shield Patch Cable
Note:Beforeapplyingpowertothegroundedswitch,youmustuseavoltmetertoverifythereis
novoltagedifferencebetweenthepowersupply’snegativeoutputterminalandtheswitchchassis
groundingpoint.Iftheuseofshieldedcablesisrequired,itisgenerallyrecommendedtoonly
connecttheshieldatoneendtopreventgroundloopsandinterferewithlowlevelsignals(i.e.
thermocouples,RTD,etc.).Cat5ecablesmanufacturedtoEIA-568Aor568Bspecicationsare
required for use with switches.
IntheeventallCat5epatchcabledistancesareshort(i.e.allEthernetdevicesarelocatedthesame
localcabinetand/orreferencedtothesameearthground),itispermissibletousefullyshielded
cablesterminatedtochassisgroundatbothendsinsystemsvoidoflowlevelanalogsignals.