Negative 48 volt

[iggy05]

Will the 450m 3ghz run on a -48v power system? Trying to determine if it is isolated or not.

[Douglas_Generous]

according to the user guide, yes if powered through the CMM5 which supports +/-48vdc on the 56v injector

[CambiumMatt]

Yes, this is correct. You can use either + or - 48 VDC. Confirmed in this thread as well:

Positive or Negative Ground for new 450M 3Ghz

I know this is a brand new product and no one has any deployed yet, but I was wondering if anyone knows if the new gear from Cambium is  going to be negative ground like the old gear or if it is going to change to positive ground? Hoping it stays the same but figured I better ask before I get started building out our new solar array. Thanks

[CambiumMatt]

@Douglas_Generous

according to the user guide, yes if powered through the CMM5 which supports +/-48vdc on the 56v injector

For the 3 GHz version, direct DC power is required, so this product cannot be powered directly by the CMM5. It has too high a wattage requirement for Power over Ethernet.