Greetings All,
I have been having problems getting onto the UL website at http://www.ul.com
for the
past few days. I get the message, Internet Explorer cannot display the
webpage. I can
go to the other UL sites for Europe and Asia, but not the one for North
America. Is
anyone else experiencing
Okay. Is the NEC/NFPA 70 applicable for industrial sub-assemblies? I think
no because ANSI/NFPA 79 is applicable (chapter 3 AHJ, labelled equipment).
The big difference for our European manufacturers is the third party
testing/certification in the US in comparison to our CE procedure
Folks,
Due to growth in several GPS and Marine radar market sectors, Garmin
International has 2 openings for experienced Compliance Engineers and
Hazardous Substance Issue Leaders/Project Managers. If you are interested,
please provide the information requested at:
Michael,
Be careful using the word “legal” and thinking only of the federal
government. I have seen other people make this mistake. The people that
normally enforce the electrical codes in the United States are the “local”
governments, typically cities, townships, counties, etc. The
Michael:
You are right. The compliance with the safety law in the workplace is the
employer responsibility.
However, the manufacturer (importer) will obtain approvals to be able to sell
equipment and to have additional liability protection.
In USA the following safety and emission
In message 006101c75206$86140990$0400a8c0@Pete97219Compaq, dated Fri,
16 Feb 2007, Pete Perkins peperkin...@cs.com writes:
Would anyone know if there could be a cross receiver interference issue
with multiple receivers inhaling the GPS signal and processing it?
The wanted signal is so weak
I do not see the cited possible problem as realistic, because the GPS signal
is so weak it comes in below the noise floor of the GPS receiver, and it is
only by way of the processing gain based on the algorithm that the signal is
actually received. Only a GPS receiver will be able to do that.
Mike, David,
Two different answers or not?!
David said:
_
Correct. Mfr of the machine is responsible for appovals. There is no customs
requirement.
But if the subassembly is a power supply to be incorporated into an
NRTL-approved unit, a UL or TÜV recognition mark (backwards 'UR',
In message 45d60bc4.3020...@dctolight.net, dated Fri, 16 Feb 2007,
Fred Townsend f...@dctolight.net writes:
The offending acoustical signal is converted to an electrical signal
which is delayed
Every frequency would need a different delay. It's much simpler to
invert the polarity. With DSP,
All,
None of the discussion so far had mentioned the potential
interference with GPS signals. This was one of the major factors mentioned
in an IEEE Spectrum article last year. GPS signals are typically
low-level/weak signals looking for a receiver. GPS is being substituted
more and more
Gentlemen let me offer a new theory about a different type of RFI. Before I do
that let me affirm what Ken Javor has written about cell phones.
During the nineties it was not uncommon to see a handset in the center chair
back of the seat in front of the flyers of several major airlines. These
We continue to digress, but it's a Friday before a 3 day weekend (in the
US)!
Reverse thrust props have hit the model airplane scene allowing for some
pretty wild aerobatics. Model aviators have been standing stunt planes
on their tails a few feet off the ground, hovering really, for years.
Hi All,
in my understanding an industrial sub-assembly which is intended for a
machinery no mandatory US requirements do exist, don´t it?
Also a UL mark isn´t required because the UL mark isn´t a legal mark
(like the European CE marking).
Is that correct? Comments are welcome.
Mit
That was the reason to develop a database for the regulatory affairs of
products (EMC, safety, spectrum matters) for our customers.
Mit freundlichen Grüßen
Yours sincerely
Dipl.-Ing. Michael Loerzer
Managing Director
Regulatory Affairs Specialist
Fon: +49 30 3229027-50, Direct Call: -51
Fax:
Hi Brian:
I am not certain if 'reverse' thrust on jets can be used to back up.
Some years ago, some airlines attempted
to save money by backing 727s out of the
gate by using reverse thrust.
I recall being on an Eastern 727 that
backed out of its gate and into the alley
at Fort Lauderdale.
In turn:
1) Cell phones should not cause a problem on aircraft unless there are
aircraft radios in-band. The prohibition against airborne cell phone usage
protects the cell system, not the aircraft. Thus, United's policy is a
rational response.
2) While the terminal area may well be the most
In message 03ed01c751df$ed86a690$580fa...@nceelabs.org, dated Fri, 16
Feb 2007, Doug Kramer dkra...@nceelabs.com writes:
The device is obviously part of a social alarm system, for which there
are requirements (50130-x). I suggested that they take a similar
approach as a PC peripheral maker by
I seem to recall a quote from Igor Sikorsky along the lines of “talking
about flying is a very pleasant form of insanity”, or some such thing. Yes,
this OT, but it is pleasant.
Ghery S. Pettit
_
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Bob Richards
Sent:
Interesting thread --- couple of comments:
1. United now allows cell phone usage on the ground prior to closing the
door to leave the gate and allows cells phones to be used while taxiing
to the gate after landing. Not aware of any reported problems.
2. According to avionics manufacturers, the
I remember very well an airshow I attended years ago. A National Guard C130
flew in and parked, and allowed people to walk through the aircraft. At the
end of the day, as all the planes were leaving, the C130 fired up on the
taxiway facing the crowd. Rather than making a really tight turn and
This is not a dissension from the group consensus that personal electronic
devices (PEDs) need to be turned off during critical phases of flight, but
it is a closer examination of what is really happening.
The original event that triggered the action relative to PED operation was
the final
Many prop-job aircraft have reversible pitch ('beta' thrust) props can back
up; e.g. C130 Cessna Caravans, and many of the craft that use the venerable
PT6 engine.
I am not certain if 'reverse' thrust on jets can be used to back up.
Probably need to explain some aviation terms here. 'Beta' as a
Fellow list members,
I have been discussing the EU requirements of a passive, resistive sensor
pad with a client for the past several months. The device is placed on the
floor and if so much force is applied to it (a person steps on it), it
triggers a separate device.
The device is obviously
In message
1f5308c5923f3b4daa51d189bf25500601eea...@edgmsmail01.eu.thmulti.com,
dated Fri, 16 Feb 2007, Carpentier Kristiaan
kristiaan.carpent...@thomson.net writes:
If the PSU design is the same but there is a metal earth pin that
is not connected inside the adaptor, can the Class II marking
I do not know what the view of an approvals body such as ASTA might be, but I
can see no technical reason provided that the insulation requirements between
the live parts and the metal pin are met and can be assured. I am sure that
the use of a plastic pin is both to simplify the design and to
Hi group,
UK wall plug power supplies have a ground pin to open the slutter of the wall
socket outlet.
When the design of the power supply does not rely on Protective Earth, then
this earth pin can be made of plastic. There is a Class 2 marking on the wall
plug adaptor.
If the PSU design is
And that's one of the documents that's got errors in it...
In some countries 100mW is permitted, although this can vary dependent on
whether it is for indoor or outdoor use, and in the US I believe up to 4W can
be used.
I have also see some products claiming to meet EU regulations, which limit
I used for the frequencies.
http://www.cisco.com/univercd/cc/td/doc
product/wireless/airo1200/accsspts/ap120scg/bkscgaxa.htm
I thought the power levels were limited to 10mW?
Regards
Tim
6239
desk A1S77
P Please consider the environment before printing this email.
_
From:
Everybody,
I believe that the ITU does produce much of this information, but that it is
no longer freely accessible. You have to buy the CD-ROM.
That said, individual country frequency allocation tables do provide a bit
more detail, but take time to research.
The attached document may
In message 512830.53455...@web34706.mail.mud.yahoo.com, dated Thu, 15
Feb 2007, peter merguerian pmerguerian2...@yahoo.com writes:
Ok - you guys start an excel table with the follwoing info and let's
add to the list. Great suggestion.
It need A guy to co-ordinate. If it's left leaderless, it
Ok - you guys start an excel table with the follwoing info and let's add to
the list. Great suggestion.
Country ISO Country CodeBand [MHz] EIRP [mW] EIRP [dBm]
TPC [dB]DFS
Indoor/ Outdoor Channels
George Stults george.stu...@watchguard.com wrote:
Grace,
EK has been in force for a very long time. As you have noted, more products
have been added to the list and these need to be EK marked March 1, 2007.
You can contact me directly regarding the simplest way to get EK Mark
certification.
Best Regards,
Peter
Grace Lin
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