Hello,
On the last CISPR meeting Sept.2002, this case of direct plug-in equipmenut
was discussed.
In the current CISPR22/EN55022, to use AC extention cord is inhibited.
But the direct plug-in equipmenut can not use the ferrite clump.
The output of direct plug-in is DC, not AC.
To use ferrite for
Hello Group!
Imagine you are going to install 20 small chassis (shelves) in one rack in
Central Office.
If you know your acoustic noise level from one chassis, is it any way to
calculate total noise?
Sorry, if it is not the smartest question.
Please reply!!! Need an answer!!!
Thanks,
Mark Gandler
I understand that in some parts of Japan you will find 100V and 200V
single phase in lieu of the standard 120V or 230V. Does this apply to
three phase power as well? I have been told that Japan uses a strange
three-phase open delta; four-wire, earthed mid-point of phase. This
gives you 200V singl
Zohar,
I'm not familiar with that power level, but I am going to assume that
you are
going to have to know the wavelength of this thing as well. The permissible
power output level for the smaller class 1's is dependant on the wavelength. I
believe the reasoning is that the different wavel
I read in !emc-pstc that Peter L. Tarver
wrote (in )
about 'jurisdiction, overlap, and delegation in USA rules.' on Tue, 21
Jan 2003:
>> That's what I meant by 'delegated'
>
>Except that there is no delegation. Rather, the case is one
>of supersession: municipal to county to state to federa
I read in !emc-pstc that John Barnes wrote (in
<3e2d8c13.7...@iglou.com>) about 'EN 55022:1998 +Amendment A1:2000' on
Tue, 21 Jan 2003:
>But if we are testing a product that uses a "wall wart" direct plug-in
>power supply, do we need to bother with the ferrite clamps/tubes?
>
>My interpretation
To the Group,
Amendment A1:2000 to EN 55022:1998 becomes mandatory (has a DOCOPOCOSS
of) August 1, 2003-- see
http://europa.eu.int/eur-lex/en/dat/2002/c_304/
c_30420021207en00020015.pdf
For testing tabletop equipment, note 6 of Figure 10 says "Mains cables,
telephone lines or other con
> From: John Woodgate
> Sent: Tuesday, January 21, 2003 12:40 AM
>
> I read in !emc-pstc that Rich Nute wrote
> >
> >Hi John:
> >
> >> >The electrical safety legislation seems to
> be a bit more complicated in U.S. compared to EU.
> >>
> >> A very great deal more complicated, because
> the p
All,
Last week, I attended a PECA workshop from the EU commission in Brussels.
There were several speakers from the following countries:
Czech Republic
Hungary
Slovenia
Poland
Estonia
Luthuania
Latvia
No speakers from Malta, Bulgaria and Romania, but PECA negociations are
initiated or in progres
There will be a Northeast Product Safety Society meeting tomorrow,
January 22nd, at EMC Corporation's Customer Briefing Center at 42 South
Street in Hopkinton, MA. A social hour with light refreshments will
begin at 7:00 PM and the technical meeting will start at 7:30 PM. John
Freudenberg, NPSS
Zohar,
My educated guess is that a 200mW (I'm assuming "milli"-Watt not "micro"-Watt)
transceiver would have a semiconductor laser source. I wouldn't imagine that
it would be an average LED.
>From your subject line, it appears that you believe that your "laser" product
is Class 3B.
Assum
Zohar -
IEC60825-2 is the standard for fiber optic systems; the
transceiver itself must comply with IEC60825-1.
For the US, the Code of Federal Regulations, Title 21, Food
and Drugs. Laser performance and marking requirements are
found in Part 1040, ยง1040.10. You should also become
familiar wi
I read in !emc-pstc that Rich Nute wrote (in
<200301210304.taa03...@hpsdlxs0.sdd.hp.com>) about 'jurisdiction,
overlap, and delegation in USA rules.' on Mon, 20 Jan 2003:
>
>
>
>Hi John:
>
>
>> >The electrical safety legislation seems to be a bit more complicated in
>U.S.
>> >compared to EU.
Zohar,
You need to comply with US Code For Regulations 21CFR1040
The Center for Devices and Radiological Health, an arm of the US Food
and Drug Administration (FDA) regulates this area.
Here's a link that is useful.
http://www.fda.gov/cdrh/comp/rad_consumer.html
John A. Juhasz
GE Interlogix
Fi
After some additional research, I found my answer. Electrolyte capacitors
contain substances of concern if the volume of the device exceeds a
specified minumum. In that case, the metals are to be recovered and the rest
is to be treated by high temperatures. Additional information on the WEEE
recov
The FDA does not consider LEDs to be lasers in the USA, so the are not
controlled by FDA regulations. So go ahead a burn out someone's eye - lol.
Richard Woods
Sensormatic Electronics
Tyco International
From: zohar.zosmanov...@ecitele.com
[mailto:zohar.zosmanov...@ecitele.com]
Sent: Tuesday,
Apologies to all for false information on my recent submission.
The DTI have done the dirty on me! The current draft WEEE document looks
identical
to the version that I downloaded some time ago. It has the same numbers
and dates etc. on the front page and I assumed (foolishly) that it was
unc
Hello,
I have an ITE product consisting of fiber optic Transceiver 200mW output
power.
I'm not familiar with that type of equipment, but I know that the fiber
optic should comply with IEC 60825-2.
What are the requirements for US.
Any information regarding the above subject is appreciated.
Hello Doug,
Check out the following standard:
IEC Publication 60173, Colors of the cores of flexible cables and cords.
The color scheme you are looking for is referenced in this standard.
Best regards,
Ron Wellman
At 03:53 PM 1/20/2003 -0700, POWELL, DOUG wrote:
>Hello group,
>
>In the past I
Hi John:
> >The electrical safety legislation seems to be a bit more complicated in
U.S.
> >compared to EU.
>
> A very great deal more complicated, because the practical requirements
> are not centralized but delegated down though the local government
> chain, and in some cases j
howard and others
my dad, robert hanson, teaches a one day course on key emi/emc issues (my
dad teaches for u. wisconsin, berkeley, and for his own company, americom
seminars).
the next emi/emc seminar is jan. 21 in seattle. there will be one on mar. 27
in minneapolis/st.paul. information about
21 matches
Mail list logo
