But there was a very good reason for that. + and - twisted on a single
pair greatly reduced the sync pulse spike from causing ethernet errors.
The 450 went back to the old way and I haven't seen sync-over-power
causing ethernet errors on it. Surely things have improved with PHYs
now. The PMP100 PHY is noisy and pretty sensitive to all kinds of crap
which is why I've only ever done timing port sync on those.
On 10/29/2015 9:08 PM, Jeremy wrote:
Do you think that Cambium was like, "These techy types are so
enthusiastic about proprietary formats like Apple and everything, we
should follow suit and ignore all of the IEEE standards!??" Or was it
"Maybe we can MAKE them buy our CMM!" Either way, I call it a POE
failure. Glad that I never deployed 430.
On Thu, Oct 29, 2015 at 12:24 PM, Chuck McCown <[email protected]
<mailto:[email protected]>> wrote:
Yes, it bonds the positive or 4/5 with the positive of 7/8
whichever one that is. It is the split pair powering version.
The others don't split the power pair.
The most universal one is the GigE-XXX-POE. Unless you need split
pair powering...
-----Original Message----- From: Matt
Sent: Thursday, October 29, 2015 8:45 AM
To: [email protected] <mailto:[email protected]>
Subject: Re: [AFMUG] 430APC-HV
Does the 430APC-HV bond any pairs? Would it be the more universal
one?
On Thu, Oct 29, 2015 at 9:28 AM, Chuck McCown <[email protected]
<mailto:[email protected]>> wrote:
Right, it electrically bonds the pairs for powering. That will
not work for
a 430 and a few others.
-----Original Message----- From: Matt
Sent: Wednesday, October 28, 2015 5:10 PM
To: [email protected] <mailto:[email protected]>
Subject: Re: [AFMUG] 430APC-HV
You want the GigE-APC-HV because it will work with everything.
but power pairs are electrically bonded (4/5)
(1/2) (3/6) (7/8)
Will that make it not work with something?
