That sounds like an excellent suggestion to me. It does raise one unrelated
question in my mind, because I know little about Ethernet. This is just for
my own understanding, it doesn't bear on the original post. Why is it you
can get 100 MHz on phone-line type Ethernet cable, but only 10 MHz
Hello Gary,
May I suggest going to older Ethernet hardware? There are 10BaseT to
10Base2 Ethernet adapters. You may have to look in a computer resale shop
to find this older hardware. This will get you to the older 50 ohm coaxial
Ethernet connection. You should have no trouble getting the
We have a portable DVD player with comes with a set of rechargeable batteries
and charger/mains adapter for use at home and cigarette plug cable for used in
car. Does the unit require CE approval or e-mark approval?
Thanks,
Scott
Gary,
There are RJ45 fiber optic converter boxes out there. In the past, we have
used black box
fiber converter boxes. Note, they were screamers and we spent lots of time
trying to quiet
them down, (sanding all painted mating surfaces, adding FB's, etc.) Not fun
when you have
to do real work.
Thanks folks, as always I appreciate your thoughts and ideas. Lots of things
to think about and other than the copper to optical converter which I’m out
of time and money for I may be trying all of them.
Thank you all for the time to respond.
Gary
Gary,
The waveguide beyond cutoff attenuation will be very degraded by the cable
passing through it. It will become a length of coaxial cable.
The best thing I think would be bulkhead connectors that GND the entire
perimeter of the cable shield to the chamber wall.
The suggestion made
There are RJ45s with built in ferrite filters but that sounds like a poor band
aid. I also think you will find building wave guides a tad more difficult than
you anticipate. Fortunately I think there are several must better solutions.
Ethernet over fiber has been around for a long time. It may
A 3-meter semi-anechoic (of ETS manufacture) chamber and annex control
room is up for sale. If interested, please forward your inquires to the
following person:
Larry Sourisseau
e-mail: lsouriss...@arrista.com
Office Ph: 204 480-8415
Cell: 204 799-3408
Thank you
-
This message is
Gary,
I think the waveguide will work well to keep emissions from entering through
the aperature. I would add ferrites to the Ethernet cable at the shield room
opening to strip off the common mode energy.
Bill
_
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of McInturff
How about finding an ethernet common mode choke and putting it between two RJ
connectors in a waveguide?
Just my thought – they work when exiting products to keep the noise inside
the Faraday cage. Should be simple enough to solder up then you just have to
figure out how to mount it (or
Dumb question maybe
I have to get a UTP Ethernet connection out of a semi-anechoic
chamber. There no anti-chamber so any unfiltered cable routing opening is a
major leak because of the opening and the induced noise on the cable itself.
Since Ethernet signals don’t like to be filtered.
Hello Derek,
There are multiple parts to CISPR 14. The first part, EN 55014-1, covers
emissions. EN 55014-2 covers immunity. You should also be aware that
there are some immunity tests in EN 60335. These include a surge test at a
higher level than required for general immunity. However, the
Jan,
The following may not apply to your specific case but in response to your
statement Wrt immunity I would assume that ESD would bridge corrosion
easily., I would caution that even though ESD is a high voltage, victim
circuits may be sensitive to only a few volts, especially if directly
In message 44f59cd0.6070...@aol.com, dated Wed, 30 Aug 2006, Derek
Walton lfresea...@aol.com writes
I've been presented with a request for testing kitchen appliances.
These would be cookers, dishwashers, coffee pots, ovens, kettles etc.
It does not cover hand held appliances.
Is there a
Guys,
I've been presented with a request for testing kitchen appliances. These would
be cookers, dishwashers, coffee pots, ovens, kettles etc. It does not cover
hand held appliances.
Is there a specific product standard for these devices now, or in the planning
stage? I'm sort of leaning to EN
Dear Grace,
This is very helpful – Thank you.
Mark Schmidt
X-Rite Incorporated
_
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Grace Lin
Sent: Wednesday, August 30, 2006 8:53 AM
To: emc-p...@ieee.org
Subject: BSMI Certification Applications - Document
Dear Members,
Several members have express their frustration regarding document required by
their agents in Taiwan for BSMI certification applications. Following is
several items that BSMI reviewers expect to see (as of July 2006):
1. BSMI Certificates
* Power cord assemblies,
*
Jeff,
I still say voluntary - see item 3 of the same document:
3. Use of wireless equipment in the band 2.4 GHz to 2.4835 GHz.-
Notwithstanding anything contained in any law for the time being in force, no
licence shall be required by any person to establish, maintain, work, possess
or
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