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by dunkercz
Thu Jul 09, 2020 3:01 pm
Forum: RouterBOARD hardware
Topic: CRS112-8G-4S-IN - DC input/POE-out questions
Replies: 6
Views: 1189

Re: CRS112-8G-4S-IN - DC input/POE-out questions

Hello, we are solving problem with +/- DC voltage. CRS112 is grounded to negative pole of 48V DC (ie. +48V power system). Telecommunication standard is -48V power system (grouded positive pole of 48V DC). There si problem with HW (Dragon Wave, Ceragon, ATH, Ericsson), which he usec -48V. If we conne...