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AF5x on 48 HV

Posted: Sun Nov 22, 2015 10:05 pm
by keefe007
Ubiquiti is now saying that AF-5X can accept 48v. Should we use them on the normal 48v ports or the 48HV?

Re: AF5x on 48 HV

Posted: Sun Nov 22, 2015 10:16 pm
by lligetfa
Citation please?

Re: AF5x on 48 HV

Posted: Sun Nov 22, 2015 10:23 pm
by sirhc
keefe007 wrote:Ubiquiti is now saying that AF-5X can accept 48v. Should we use them on the normal 48v ports or the 48HV?


READ THIS POST viewtopic.php?f=6&t=1178

airFIBER 24 and airFIBER 5 require 48VH

If you power and airFIBER 24 or airFIBER 5 with 48V you will blow out your Ethernet Transformer on the switch and maybe the airFIBER and this tye of damage is not covered under warranty.

The new airFIBER X can use 24V on cable runs around 200' and 24VH for longer runs

Re: AF5x on 48 HV

Posted: Sun Nov 22, 2015 10:27 pm
by keefe007
Yes I know about af24 and af5. I'm talking about the airfiber x series. The post is in the edgemax alpha forum by UBNT-Gary.

Re: AF5x on 48 HV

Posted: Sun Nov 22, 2015 10:34 pm
by sirhc
keefe007 wrote:Yes I know about af24 and af5. I'm talking about the airfiber x series. The post is in the edgemax alpha forum by UBNT-Gary.


I have no idea about that post (did not see it)??

I would be very careful trying that!!!!!

But why use a 48V port when you know the 24V port works fine SAFELY?

Re: AF5x on 48 HV

Posted: Sun Nov 22, 2015 10:40 pm
by sirhc
"IF" the device can handle 48V it could require less watts from the bottom but would cause more heat in the airFIBER X unit as it would be required to step down more to 3.3V and 1.5V to drive the board.

Not sure what UBNT is thinking as this will even further muddy the POE waters with their POE requirements across devices.

That is great if all will accept both and not just "NEW" units (boy that would be a mess).

I thought it was ODD that airFIBER X was 24V to start with but I am still leary to try this. I think I will let others cut the path on this one.

Re: AF5x on 48 HV

Posted: Mon Nov 23, 2015 1:24 am
by keefe007
Here's from the post:

"You are both correct, X radios will accept 48VDC. We have not updated our documentation to reflect this because the first 100 units that shipped can't tolerate 48V so we didn't want to call attention to it yet. I will ask @ubnt-greg to publish the list of the first 100 "X" S/N's so users can figure out if their radio needs to stay with 24VDC..."

Re: AF5x on 48 HV

Posted: Mon Nov 23, 2015 8:27 am
by Mikea
a multi-million company like ubiquiti can't recall and replace those 100s of AFx???..... GREAT!!!

Re: AF5x on 48 HV

Posted: Mon Nov 23, 2015 11:25 am
by tcknudson
ePMP  marked details only.PNG
allowed voltage change
ePMP marked details only.PNG (962.47 KiB) Viewed 15405 times
Changing voltage requirements? check this one out, just cost me an ePMP, notice the pretty white one on left, it is now a paper weight.

Re: AF5x on 48 HV

Posted: Mon Nov 23, 2015 3:05 pm
by keefe007
Here we go:

" All AF-5X radios with MAC address 04:186:E3:08:E9 or higher support input voltages 19VDC to 53VDC."