Well, then you’ve never done a wiring job for a business or school or govt that
requires documented qualification tests on every drop.
But yeah, I assume Forrest is trying to test that his GbE POE doesn’t degrade
any of the specs like crosstalk, attenuation, return loss, etc., or to quantify
how much you have to derate the 100 meter distance to compensate for inserting
the POE?
I used to have a Pentascanner, but the Fluke website says that line was EOM in
2004 and EOS in 2008. Way to make me feel old! No idea if the current
DSX-5000 can test through the transformers in a gigabit POE, or be convinced to
run the qualification tests even if the DC tests fail.
From: Mike Hammett
Sent: Saturday, February 13, 2016 10:36 AM
To: af@afmug.com
Subject: Re: [AFMUG] Gigabit "cable validator" which validates *through* a
Gigabit PoE Injector?
The only thing that matters to me is iPerf. :-) Granted, I'm not creating
components and troubleshooting why when they're in place they may not be
getting full throughput anymore.
-----
Mike Hammett
Intelligent Computing Solutions
Midwest Internet Exchange
The Brothers WISP
--------------------------------------------------------------------------------
From: "Forrest Christian (List Account)" <li...@packetflux.com>
To: "af" <af@afmug.com>
Sent: Saturday, February 13, 2016 10:33:30 AM
Subject: Re: [AFMUG] Gigabit "cable validator" which validates *through* a
Gigabit PoE Injector?
I'm already doing that, but it doesn't help to verify things like near end
crosstalk, insertion loss, etc. etc. etc.
It's just a 'everything is fine' vs 'what does the cable look like' test.
On Sat, Feb 13, 2016 at 7:09 AM, Mike Hammett <af...@ics-il.net> wrote:
The best cable tester I've found is iPerf.
-----
Mike Hammett
Intelligent Computing Solutions
Midwest Internet Exchange
The Brothers WISP
------------------------------------------------------------------------------
From: "Forrest Christian (List Account)" <li...@packetflux.com>
To: "af" <af@afmug.com>
Sent: Saturday, February 13, 2016 8:02:30 AM
Subject: [AFMUG] Gigabit "cable validator" which validates *through* a
Gigabit PoE Injector?
Ok, everyone.....
I'm looking for one or more Gigabit Ethernet testers to test product with
which will actually test (signal-wise) a gigabit link for spec conformance....
The catch? It has to work with a gigabit injector in the middle, since it's
really about testing the injector's performance instead of a cable.
Most of the gigabit cable validators I've seen will completely refuse to run
the signal validation tests on a cable which doesn't pass electrical
continuity. Unfortunately, once you insert a gigabit injector the cable
electrically looks like all 4 pairs are shorted, and there isn't any continuity
to the far end.
Does anyone have a CAT5 cable tester which works *through* a PoE? Or are
willing to test theirs on a (unpowered) injector to see what happens?
--
Forrest Christian CEO, PacketFlux Technologies, Inc.
Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602
forre...@imach.com | http://www.packetflux.com
--
Forrest Christian CEO, PacketFlux Technologies, Inc.
Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602
forre...@imach.com | http://www.packetflux.com
