Have you found out from Cambium if they're going to put some software
solution in place to work around the ringing problem on longer cables? I
would really hate to go swap every 10/100 injector powering and timing
450APs. GigE on the regular 450 is worthless to me. Pretty sure I'm
seeing the ringing on 250+ foot runs at multiple sites now. I have the
surge suppressors removed at a site and it didn't help, so this has to
be it.
On 2/15/2016 5:41 PM, Forrest Christian (List Account) wrote:
This is where it gets fun:
The 10/100 (100 series) and Gigabit Revision H injectors are identical
power-switching wise. These are designed to produce a timing pulse
with a very quick fall and rise time to mimic the behavior of a CMM3.
The 430/320 injector and the Gigabit Revision I injectors are
identical power-switching wise. These are designed with a slower
rise and fall time to suppress ringing.
The 430/320 injector's reverse protection circuit wants 48V or more
(but is ok at lower).
The 10/100 and Rev H gigabit injector reverse protection circuit wants
24V but is ok up to around 56V.
The Rev I reverse protection circuit works pretty much all across the
board voltage wise.
The 100 series injector uses spare pair injection on pins 4,5
(negative) and 7,8 (positive).
The 320/430 injector uses spare pair injection on 4,7 (negative) and
5,8 (positive).
The Gigabit injectors use data+power injection using ethernet
magnetics on 4,5 (negative) and 7,8 (positive).
On Mon, Feb 15, 2016 at 3:55 PM, Wireless Administrator
<[email protected] <mailto:[email protected]>> wrote:
So it sounds like the big difference on the 320/430 is different
power pinout?
Steve
*From:*Af [mailto:[email protected]
<mailto:[email protected]>] *On Behalf Of *Forrest Christian
(List Account)
*Sent:* Monday, February 15, 2016 5:25 PM
*To:* af
*Subject:* Re: [AFMUG] Power and Sync for ePMP 1000 AP
The 30V rating is more a label for the radios, and NOT for the
injector. Any revision H injector should be good up to at least
56V. Above that gets touchy. The Rev I and later injectors
(Gigabit only) are fine a bit higher.
So just power them at the radio voltage, and don't worry about it
unless you're hooking them to a battery array with some insane
charging and/or equalization voltage.
Also, 28V or so should be fine as well.
-forrest
On Mon, Feb 15, 2016 at 1:55 PM, Wireless Administrator
<[email protected] <mailto:[email protected]>> wrote:
I know there was discussion here over the last several weeks about
ePMP AP’s developing issues in the cold when powered by 24v
Sources like PacketFlux PMP100 SyncInjectors. I recall the
recommendation was to move to 48V. Since the PacketFlux PMP100
SyncInjectors are only rated to 30V, Is the recommendation to
Power them using a PMP320/430 SyncInjectors? I realize this will
not support Gigabit Ethernet. I have a need to support ePMP100
and PMP320 on the same injector.
Steve B.
--
*Forrest Christian*/CEO, PacketFlux Technologies, Inc./
Tel: 406-449-3345 <tel:406-449-3345> | Address: 3577 Countryside
Road, Helena, MT 59602
[email protected] <mailto:[email protected]> |
http://www.packetflux.com <http://www.packetflux.com/>
<http://www.linkedin.com/in/fwchristian>
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--
*Forrest Christian* /CEO//, PacketFlux Technologies, Inc./
Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602
[email protected] <mailto:[email protected]> |
http://www.packetflux.com <http://www.packetflux.com/>
<http://www.linkedin.com/in/fwchristian>
<http://facebook.com/packetflux> <http://twitter.com/@packetflux>
