If it works from a Netonix switch, which we all know is +48VDC, then the
radio isn't tying power return to chassis ground. aka floating, just
like a SAF Lumina. But I do remember hearing that the DC input block on
the IP20/820 ODU itself is chassis bonded. Isn't the 820 802.3at
compliant? Most of that stuff is going to be floating or negative bonded.
I'm powering about half of our Trango ApexPlus radios using
GIGE-POE-APCs using +48VDC supplies, and/or RSD200C-48's in mixed
setups. The Trango's definitely chassis bond return on *all* of the
power inputs (mgmt, data and DC block). AFAIK, Trango is using the exact
same Pulse transformer in their POE-GIGE-48 injector boxes. It simply
comes down to not mixing "-48" and "+48" devices on the same supply if
anything is chassis bonded.
On 12/6/2016 6:13 PM, Faisal Imtiaz wrote:
Hi Chuck...
This may be an opportunity to clarify something...
According to the specs Ceragon IP-20c is a -48vdc radio.
Their POE box/adapter, takes 48v dc or 24v dc and powers the radio.
There has not been any clear answer if their Radios will run on regular 48vdc
directly ...
There have been folks who have 'tested' the cambium 820 version of these
plugging directly on the Netonix switches.
In my opinion, these are not 'in-expensive' radios that I would risk installing
in-correctly.
In recommending your injector / surge protector as a solution, my question
would be.
1) can we do -48v dc power via these devices ? it is just a matter of making
sure the polarity of the dc cable is correct ? or is there more to it.
Regards
Faisal Imtiaz
----- Original Message -----
From: "Chuck McCown" <[email protected]>
To: [email protected]
Sent: Tuesday, December 6, 2016 6:08:49 PM
Subject: Re: [AFMUG] WTB IP-20C POE
I am hurt...
http://www.mccowntech.com/800-gige-poe-outdoor-midspan-poe-injector-ethernet-surge-protector/
http://www.mccowntech.com/800-gige-poe-apc-rack-mount-surge-protector-power-inserter/
Sheesh!
-----Original Message-----
From: Faisal Imtiaz
Sent: Tuesday, December 06, 2016 3:55 PM
To: [email protected]
Subject: Re: [AFMUG] WTB IP-20C POE
Some suggestions:-
for the POE injector...
you can try a Cambium Reseller.
you can possibly by them on Ebay (shipping from Israel)
you can try Surplus Wireless Gear folks too.
In regards to the Power Supply, that is a straight forward 48v DC power
supply (Brick).
Regards
Faisal Imtiaz
Snappy Internet & Telecom
7266 SW 48 Street
Miami, FL 33155
Tel: 305 663 5518 x 232
Help-desk: (305)663-5518 Option 2 or Email: [email protected]
----- Original Message -----
From: "Sterling Jacobson" <[email protected]>
To: "[email protected]" <[email protected]>
Sent: Tuesday, December 6, 2016 5:45:19 PM
Subject: [AFMUG] WTB IP-20C POE
Somehow I misplaced my Ceragon POE injector and power supplies during a
cabinet
move.
Anyone happen to have a Ceragon IP-20C compatible POE unit they could sell
me?
I think the power supplies probably aren't that hard to find, but the POE
apparently is.
