Hello Christine,
I haven’t been involved in access control for a few years – there was a
group that developed standards for alarm systems and a few standards were
under development. I hadn’t seen them in the OJ last time I looked.
I suspect that access control would be covered by RTTE Dire
We already had a California Instruments system to perform 61000-4-11. CI had a
package that could extend the capability to harmonic and flicker. When Agilent
abandoned us, we went to CI. We are please with the system.
Don Umbdenstock
Manager Compliance Engineering
Tyco Safety Products / Sens
The site referenced below has various links that will take one to different
regulations and decrees; I am not sure about standards (haven’t looked
recently). A caution, those documents that are offered in English are usually
1-2 revisions behind what is available in Korean.
The site is usefu
125 kHz and 868 MHz. Interestingly, one would think filtering at the higher
frequencies would be easier to implement, but indications are that the higher
frequency had more hits.
It doesn’t indicate the degree of compliance with the medical devices
immunity requirements.
Don
561 912 6440
___
Does anyone know where I can find either a copy or a draft copy of lot 7?
Does anyone know if discussions are still occurring on lot 7?
Don Umbdenstock
Manager Compliance Engineering
Tyco Safety Products / Sensormatic
6600 Congress Avenue
Boca Raton, FL 33487 USA
Phone: 561.912.6440
djumbdenst.
If the card reader operates as an intentional radiator and at frequencies less
than 490 kHz, it is also covered by the 40 dB exemption. This exemption says
that if the device has more than 40 dB of margin to the limit, it can be
treated as verification instead of certification. Many card reade
The FCC is specific in how long compliance records are to be kept. Is there a
similar requirement in Europe? I have not been able to come up with EMC, LV,
or RTTE record retention requirements (if they exist). Am I missing something
or are there no records?
Thanks in advance for your help,
Don
Is anyone familiar with the reasoning behind the withdrawal of this standard?
Does it mean that edition 7 becomes mandatory now instead of 2012?
What are the changes driving edition 7?
Regards,
Don Umbdenstock
Manager Compliance Engineering
Tyco Safety Products / Sensormatic
6600 Congress Av
LPS designated power supplies are specified for ITE when there is no fire
enclosure (i.e., plastic enclosure not qualified for fire enclosure).
Other standards achieve fire protection by specifying a maximum of 15W power
source if there is no fire enclosure (IEC 60065).
Don Umbdenstock
Mana
Hello Group,
We are having a debate concerning the best practice for grounding of a
printed circuit board containing digital logic. These boards are
multi-layer with a ground plane and a power plane.
One school of thought is to tie the ground plane to chassis ground in many
locations, thus re
Hello Randall,
We have the same model. We have ours calibrated at Liberty Labs
(www.liberty-labs.com). They are responsive and price competitive. Hope
this helps.
Don Umbdenstock
Sensormatic
> --
> From:
> randall.flind...@emulex.com[SMTP:randall.flind...@emulex.com] on behalf of
> F
Hello Group,
I would like to conduct a brief survey regarding some common aspects of an
OATS. I will summarize and publish the results.
How many labs
1) have a screen mesh OATS? If not mesh, what do you use for the
ground plane?
2) use mesh with an opening size of .25 in
John,
Interesting question that you have posed. A few years ago, I submitted a
product to the FCC that required average detection. It seemed that the FCC
had a certain distrust of the implementation of average detectors by various
manufacturers. The data that I was submitting was for a system
Compliance with an immunity regulation is no guarantee that a product will
work. It only asserts compliance.
Several years ago, we had a POS product that passed the 16 kV requirements
but still failed in the field in the northern states in the winter.
Diagnostics indicated that the product faile
The flux used was
"Indalloy Flux # 2", made by
Indium Corporation of America
1676 Lincoln Ave
PO Box 269, Utica, NY, USA
13503
Phone: 315-853-4900
There may be better solder to use, but we just used 60/40 resin core solder.
The resin did not see
Hello Group,
I would like to report on the results of implementing the recommendations
offered by many.
We found the wire cloth to be rusty where clamped between the stainless
steel ring and the concrete pad. This no doubt contributed to the 40 ohm
impedance. We replaced a 3 m square of wirecl
Doug,
Years ago, I worked in a facility where I was told General Electric made
inductors for powerline carrier systems that withstood >700kV from high
power transmission lines. These were made from some sort of ceramic
compound, formulated for insulating properties as well as structural
integrit
Senton GmbH is a test lab in Germany that is certified for ETS 300328
testing. Contact Johann Roidt at
Senton GmbH
EMI/EMC Test Center
Aeussere Fruehlingsstrasse 45
D - 94315 Straubing
Germany
49 - 9421/5522 13
j.ro...@senton.de
Hope th
"Electric Current Abroad" 1991, states that Australia has 240V 50Hz except
for Albany and Kalgoorlie and Perth which has 250V 50 Hz. The only other
note given is "frequency stability" which indicates "stable enough to
operate an electric clock" and that service interruptions are rare. No
specif
George,
See Comments below.
> --
> From: Sparacino,George[SMTP:sparaci...@andovercontrols.com]
> Reply To: Sparacino,George
> Sent: Friday, February 26, 1999 4:25 PM
> To: emc-p...@ieee.org
> Subject: C Tick..
>
> Good day,
>
> I was asked to investigate what
Try
http://www.fcc.gov/oet/info/, or
https://gullfoss.fcc.gov/prod/oet/index.html.
I use the latter for Part 15.
Don Umbdenstock
Sensormatic
"Views expressed by the author do not necessarily represent those of
Sensormatic."
> --
> From: Campi, Mike[SMTP:mca...@fpc.fujitsu.com]
The FCC issued a Report and Order (98-338) announcing a MRA with the EC and
APEC on December 23. We should expect to see a number of labs become
"certified" shortly, allowing them to provide a broad array of international
testing services. I presume that Taiwan is part of APEC.
Don Umbdenstock
S
One of our products required surge protection on a transmit output line to
comply with a UL requirement. The designer chose an MOV across the
differential output. When we performed a radiated emissions measurement, we
found the previously compliant design to be "screaming" (~ 15 dB over the
limit
ssing conditions.
>
> This is my best guess with the information available.
>
> Be glad to help you on more specifics.
>
> Richard Haynes
> 609-497-4584
>
> -Original Message-
> From: UMBDENSTOCK, DON
> To: 'EMC-PSTC Discussion Group'
> Date: Monday, N
Hello Group,
I remember recently (within the last quarter?) reading a thread about
different coatings, one of which everyone said "don't use". I have searched
through the RCIC "Recent Threads" and could not find a related subject. Can
anyone steer me to that thread? (something about "yellow ___
Related to the issue of reflections on an OATS is contaminants. I have
heard from a few sites that have all weather test capabilities, that they
need to periodically pressure clean their shelters -- 6 dB was suggested as
a variation due to contaminants. If the effects of contaminants apply to
she
Try
http://www.conformity.com
> --
> From:
> randall.flind...@emulex.com[SMTP:randall.flind...@emulex.com] on behalf of
> Flinders, Randall[SMTP:randall.flind...@emulex.com]
> Reply To: Flinders, Randall
> Sent: Thursday, November 12, 1998 4:11 PM
> To: 'emc-pstc'
> Subject:
A couple of lifetimes ago, we saw something similar due to large sized chip
capacitors becoming resistors. Something about being at the manufacturing
process limitations of the large size of the capacitor. In those days it
was a 330 nF capacitor that caused the problem. I know that processes ha
Scott,
What you have outlined below sounds dangerous to me. Here's why.
We also have used HP8591EM for a few years. We had discovered that care
must be taken to establish where the marker is placed to obtain an accurate
"auto" reading. We previously had used 5-20 MHz spans, marked the peak
sig
In addition, I would suggest to place your site as far as you can get it
from above-ground power poles.
Our site is located about 250 feet from the closest power poles. We started
out with a clean site with occasional random interference which eventually
grew until it washed out any meaningful
Another slant -- it may be your company's marketing strategy.
For some of our products our compliance engineering group has determined
that the CE mark is sufficient for European markets; however, for marketing
reasons (read: "our customers like to see . . . ") we also obtain TUV
approval. So s
Bob,
Regarding FCC Part 15 rules and Class A specifications, these are known as
47 CFR Part 15 ( Code of Federal Regulations, Title 47) and can be found on
line on the FCC Web page. Go to the page for the Office of Engineering and
Technology, FCC Rules and Regulations. You will find a section fo
Hello Richard,
We have used power converters that cover a range of voltage, frequency and
current for a few years. The versatility of separate converters providing
different power requirements in various labs caused us to move away from a
single motor-generator to the converters.
The numbers you
> Hello Everyone,
>
> I need some information regarding RFID systems in Europe:
>
> What are the European limits for RFID systems operating at 2450 MHz -
> licensed and un-licensed operation. If an RFID product currently requires
> 500 mW EIRP to operate at an acceptable range, what rules woul
Doug,
In the USA, IEEE Standards Coordinating Committee 28 (SCC 28) revised the
ANSI C95.1 in 1991. This standard has subsequently been identified as
ANSI/IEEE C95.1-1992, "IEEE Standard for Safety Levels with Respect to Human
Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz".
While reviewing the EMI mitigation techniques of our engineers, a few of
us have been debating the use of ground islands on a multilayer board.
The designs have one layer for Vcc, one for ground and 2 signal layers.
The Vcc layer is isolated into various islands. The debate involves the
segregat
Andrew,
I believe the FTZ is defunct, has been for a couple of years now. FTZ
was the office that managed transmitters in Germany. If my information
is correct, the BAPT (Federal Office for Post and Telecommunication) now
manages issues and generates regulations for transmitters. Most
regulatio
John,
MPR 1990:8 is the standard for Test Methods for Visual Display Units.
It deals with visual ergonomics as well as emission characteristics. A
companion document, MPR 1990:10 is the User's Handbook for Evaluating
Visual Display Units. I believe the current name of the standards group
is SWED
Bonjour Benoit,
There are numerous qualified labs that can assist you.
I have had good luck with Elite Electronic Engineering Co. They helped
us perform our NSA and trained us when we first set up our sites. They
operate OATS as well as anechoic chambers, so they should be able to
help you.
Don Umbdenstock
Sensormatic
--
From: ed.pr...@cubic.com
To: UMBDENSTOCK, DON
Cc: 'EMC-PSTC Discussion Group'
Subject: Re: Antenna Calibration/Site Attenuation
List-Post: emc-pstc@listserv.ieee.org
Date: Tuesday, August 26, 1997 12:32PM
--- On Tue, 26 Aug 1997 08:12:00 -0400
Great dialog, just the path that I was hoping would develop.
One thing I have learned since the question was first asked, all
biconical antennas are not made equal. The original antenna calibrated
at an outside test organization, exhibited a 5 dB difference between the
vertical and horizontal po
Hello Group.
We are trying to establish correlation between our site and a site in
Europe. One of the issues is antenna calibration.
Due to ambients, we do our tests at 3 meters. Because we measure at 3
meters, we also did the NSA profile at 3 meters and had our antennas
calibrated at a 3 meter
Does anyone know where I can find information on the restrictions of
using 13.56 MHz (ISM band) for transmitters/intentional radiators? I
have information regarding FCC and ETSI regulations; I would like to
know what the current and proposed regulations are elsewhere worldwide
for this band.
Anyo
We have recently purchased a 5kVA source for harmonic and flicker
testing. The instrument also doubles as a power converter to provide
European voltages, including the source voltage when performing IEC
1000-4-5 surge testing.
My situation is this:
The surge generator has a backfilter on it that
Mark,
Some publications that may help you are as follows:
ANSI/IEEE C95.1, IEEE Standard for Safety Levels with Respect to Human
Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz.
American Conference of Government Industrial Hygienists, Handbook of
Threshold Limit Values...Bio
I have been informed that Germany has adopted I-ETS 300330 with
exceptions.
Does anyone know where I can find an English version of
1) the German document "Vfg 5/1996"?
2) the formally issued German document BAPT 222 ZV 122, March 1997? (
I have a
draft copy, Sept 96
Spectrum Management Agency has announced its intentions to revise its
regulations for LIPDs. Comments are due by May 2, 1997. It appears
that the text of the European Standard for Short Range Devices, I-ETS
300330 is being adopted in the form of AS4268.1 -- 1996; however, SMA
has indicated excep
Does anyone know if there are any formal restrictions to using red
colored lights for front panel displays and indicators?
Is there a harmonized European standard or regulation or a specific
national regulation that requires the restriction of the color red for
warning, danger, etc.
It seems it
48 matches
Mail list logo
