More info, yummy! Thank you.
On Thu, Jun 29, 2017 at 11:45 AM, Salvador Bertenbreiter via Ubnt_users < [email protected]> wrote: > Hi guys, > Just updated the KB article to include more information about power input > options for airFiber radios: > https://help.ubnt.com/hc/en-us/articles/215999457?flash_digest= > 39fe6fbf92d2e372f6764eb4ac73ac471636e8d5 > > On Thu, Jun 29, 2017 at 1:42 PM Kristian Hoffmann <[email protected]> > wrote: > >> Perfect. Thanks Alex. >> >> >> -Kristian >> >> >> On 06/28/2017 05:19 PM, Alex Pavlos via Ubnt_users wrote: >> >> The AF-24 and AF-24HD *WILL* support -48VDC since its supply is >> isolated. AF-5(*not X* the large full duplex radio) also will support >> -48VDC. >> >> *AF-5X, AF-4X, AF-3X, AF-2X and AF-11FX WILL NOT ACCEPT -48VDC (positive >> on Earth/chassis/tower ground) AT ALL! If an “X” radio has been powered by >> -48VDC with respect to case (tower ground) it will surely be damaged!* >> >> Regards, >> Alex >> >> On Jun 28, 2017, at 6:30 PM, Kristian Hoffmann <[email protected]> >> wrote: >> >> Can someone from Ubnt answer this question? I'm getting yes, no, and >> maybe in even numbers. To complicate matters, I did actually power one up >> with -48V and it didn't explode. And that wasn't on a bench, isolated from >> ground. That's on a metal tower with other -48V non-isolated radios. >> >> Thanks, >> >> -Kristian >> >> On 06/27/2017 11:47 AM, Kristian Hoffmann wrote: >> >> I'm reading that as "yes, you can power it with -48VDC." >> >> Thanks, >> >> -Kristian >> >> On 06/27/2017 11:00 AM, [email protected] wrote: >> >> Input 48v is transformer isolated, individual on-board voltage converters >> have DC negative directly coupled to chassis ground. >> >> AF24 reads 0 ohms from board DC- (also digital ground) to chassis >> plate, “no” path between input DC- and chassis plate. >> >> 24HD shares the same PCB, so the same applies for that. >> >> *From:* Kristian Hoffmann <[email protected]> >> *Sent:* Tuesday, June 27, 2017 1:52 PM >> *To:* Ubiquiti Users Group <[email protected]> >> >> Hi, >> >> Is the AF24's internal power supply isolated in such a way that it can >> be powered with -48VDC, like other telco equipment with a positive >> ground, or will this cause a short when mixed with other -48VDC >> equipment on the same ground plane? >> >> Thanks, >> >> -- >> Kristian Hoffmann >> Fire2Wire >> [email protected] >> http://www.fire2wire.com >> >> Office - 209-543-1800 <(209)%20543-1800> | Fax - 209-545-1469 >> <(209)%20545-1469> | Toll Free - 800-905-FIRE >> >> _______________________________________________ >> Ubnt_users mailing list >> [email protected] >> http://lists.wispa.org/mailman/listinfo/ubnt_users >> >> >> _______________________________________________ >> Ubnt_users mailing >> [email protected]http://lists.wispa.org/mailman/listinfo/ubnt_users >> >> >> >> >> _______________________________________________ >> Ubnt_users mailing >> [email protected]http://lists.wispa.org/mailman/listinfo/ubnt_users >> >> >> _______________________________________________ >> Ubnt_users mailing list >> [email protected] >> http://lists.wispa.org/mailman/listinfo/ubnt_users >> >> >> >> _______________________________________________ >> Ubnt_users mailing >> [email protected]http://lists.wispa.org/mailman/listinfo/ubnt_users >> >> >> _______________________________________________ >> Ubnt_users mailing list >> [email protected] >> http://lists.wispa.org/mailman/listinfo/ubnt_users >> > > _______________________________________________ > Ubnt_users mailing list > [email protected] > http://lists.wispa.org/mailman/listinfo/ubnt_users > > -- Kurt Albershardt | Mimbres Communications, LLC | 575-342-0042
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