The GTEM is a guided wave device and usually we tend to think of
polarization in terms of free space (unguided waves). Being a TEM
transmission line, the direction of the field in the cell is between the
inner and outer conductor, the way most GTEM's are constructed and given the
location where
Colleagues,
I can find references on the web to harmonized standards, but I have not
found a reference to a list of basic standards, such as EN 61000-4-x. I am
trying to find a source that will indicate what the latest acceptable
revision is. I am sure it's out there -- I just keep missing it.
I challenged Agilent concerning the impact of their decision to discontinue
certain harmonic test systems and not support the A14 amendment. A14 is
especially important for commercial/industrial equipment previously
identified as Class D. Agilent responded positively by committing to
support
Al,
It relaxed the limits for almost all products except ITE, TV's, etc. I do
not remember all the details since I have not had to apply it yet.
Essentially the harmonic current limits are no longer relative based on the
power consumption of the device but based are on absolute values as if the
In a nutshell how did A14 change 61000-3-2. I don't have a copy of
A14 yet.
Jim Allan
Manager, Engineering Services
Milgo Solutions LLC
1619 N Harrison Parkway
Sunrise, FL, 33323
E-mail james_al...@milgo.com
Phone (954) 846-3720
Fax (954) 846-5693
-Original Message-
From: Jim
What I remember about the last time I used this standard, is that it
if focused on safety of energy distribution systems i.e. control gear having
a power
INPUT and OUTPUT , the latter possibly a motor control or a whole building
or
whatever one may imagine.
Many of the clauses in this standard
The issue comes up occasionally, and this used to be the case albeit a long
time ago. The color red can be used as long as their is no confusion with a
safety hazard. This is clearly identified in the last line of UL 60950 on
page B50 section 1.7.8.2
Colours
Where safety is involved,
You are all invited to our next IEEE EMC Chicago Chapter meeting.
List-Post: emc-pstc@listserv.ieee.org
Date: Wednesday January 17, 2001
Time: 7:30 pm (Social time 7:15 pm)
Location: Lucent
Directions from I-88 and Naperville Rd. Go North on Naperville Rd to
Warrenville
Interesting... we are gojng to set-up a pre-compliance semi-anechoic
chamber for 3 m measurements (mainly radiated emissions) on telecom
products and we'll need to correlate it with a 10m full-compliant chamber.
Our DUT's are typically sub-rack or 2m+ high telecom racks. Your idea of
Here is another specific question dealing with GTEM - OATS correlation.
Is a GTEM cell horizontally or vertically polarized?
Thanks for your help,
Mat
Mathew Aschenberg
Agency Engineer
EchoStar Technologies Corporation
90 Inverness Circle East
Englewood, CO 80112
Yes, A14 may now be employed for compliance with EN 61000-3-2.
-Original Message-
From: brett_sand...@snellwilcox.com
[mailto:brett_sand...@snellwilcox.com]
Sent: Friday, January 12, 2001 7:43 AM
To: emc-pstc
Subject: EN61000-3-2 Amendments.
Does anybody know if the amendments made
Our inductive SRD equipment operates in a non-harmonized frequency band. In
reply to our notification to the spectrum authorities, one state replied
that they will not authorize operation because the frequency is not
authorized for inductive use.
According to Article 7.2 of the RTTE Directive,
--
Andrew Carson - Product Safety Engineer
Xyratex Engineering Laboratory
Tele 023 92496855 Fax 023 92496014
---BeginMessage---
To News group
Does anyone know of a requirement within Europe for a warning of data
loss shown on a PC screen not to be in a RED box, IE does warning
information
Greetings again.
I received some questions about this off list and there has been more
discussion in this direction, so I thought I would throw my other two
cents in.
For small fully anechoic chambers with little room for antenna height
adjustment, you should be able to have uncertainty
Yes, you can use the A14 for the January 1, 2001 compliance. Just be sure
to add 61000-3-2 A14 to your DOC.
Best regards,
Jim
Jim Conrad
P.O. Box 25
Hamilton, MA 01936-0025
USA
jc...@shore.net
Phone #: 978-468-3909
FAX #: 978-468-3909
-Original Message-
From:
Has anyone had any experience with a Japan MITI law that requires a minimum
insulation resistance between primary circuitry and ground? I am advised
that a minimum of 0.1 Mohm is required for equipment up to 150V and 0.2 Mohms
for equipment 150V up to 300V.
Best regards,
Charlie Bayhi
CPSM
Hi Mike!
EN 60439-1 applies to to low-voltage (up to 1000 VAC and 1500 VDC) switchgear
and controlgear assemblies.
Coming to diesel-generator sets, IMO it applies to all the assemblies
(cabinets) that contain switching devices (circuit-breakers,
switch-disconnectors, fuses, etc.) and/or
Joe,
If the transmitting antenna (your product) and the receiving antenna were in
free space, you pretty much could assume that the radiation falls off at 1/r^2,
and thus use a 10.5dB correction factor between 10m and 3m measurements. (You
might have to worry about near-field effects and antenna
Does anybody know if the amendments made it into EN61000-3-2 for its January
2001 compliance date?
As a manufacturer of products that only use switch mode power supplies, the
amendments are of great importance to me.
---
This message is from the IEEE
I'd say either a comb generator, or a sweep generator but use them to
excite a test object of the same general size as the equipment you wish to
test. The smaller your chamber, the more it will be affected by the size of
an EUT sitting in it. If you can be pretty sure what you will test, add its
Hi Group,
Does anybodfy have a good adress to rent an Rohde Schwarz EMI receiver(s)
from 150 kHz -2 GHz?
Best Regards
Lothar Schmidt
Technical Manager EMC/Bluetooth,
BQB, Competent Body
Cetecom Inc.
411 Dixon Landing Road
Milpitas, CA 95035
Phone: +1 (408) 586 6214
Fax: +1 (408)
21 matches
Mail list logo
