Brian,
I seem to remember hearing somewhere that lead-free solder joints, especially
ones that are fairly large solder joints, may show a higher amount of cracks
in the surface than SnPb joints of the same size. (I think the reasons had to
do with amount of thermal expansion and contraction, and
Good People,
I am performing a quality review on an unit based on IPC-A-610D.
Section 5.2.7 indicates that solder stress lines are acceptable for
lead-free solders, but not for leaded solders.
Does this make sense to anyone ? What great revelation am I missing ?
Thanks and luck,
Brian
-
This
The broadband field probes used, the two suppliers to remain nameless since
they are well known, seemed to sum in a fashion, all the energy present in the
chamber, fundamental, and harmonics, such that as the harmonic energy was
reduced, there was a reduction in the displayed field strength. Frequ
ah yes, that was part of the solution. But the selectivity was still a bit
wide, so additional tech were needed.
Bob Richards wrote:
I'm not familiar with the specific test requirements for receivers, but the
1000-4-3 spec allows step sizes of 1% of the fundamental. If not required to
do other
Thanks David and Don. This makes sense now.
Jim Eichner, P.Eng.
Compliance Engineering Manager
Xantrex Technology Inc.
phone: (604) 422-2546
fax: (604) 420-1591
e-mail: jim.eich...@xantrex.com
web: www.xantrex.com
Confidentiality Notice: This email message, including any attachments,
is for
As yes, it did require very arcane, exotic, and expensive, techniques for the
test lab to solve this one. The DUT was meant to be dirt cheap and so
could/would not put in the front end selectivity necessary to limit the
exposure to a very narrowband. ps. the immunity requirement was quite a bit
h
Sorry, I meant EMC "Directive" not standard.
Andy Garcia.
Andy Garcia wrote:
Your starting point is the Official Journal of the EU.
If you have a product level (type) standard that applies to your device, look
there. Oherwise, you need to apply the generic EMC standard, under which you
are
Hello All,
Also from GR1089: 7.2 Listing Requirements
R7-1 [22] All network equipment that is directly powered by commercial ac,
either through a hard-wire or plug-and-cord connection, shall be listed for
the purpose by a Nationally Recognized Testing Laboratory (NRTL)and is
mentioned in sev
In message
, dated
Wed, 14 Jun 2006, "Sosnoski, Michael" writes
>IEC 61000-3-2 is the applicable standard. My question is how do you
>know if this standard needs to be applied to a particular product?
For Europe, you read the listing of standards 'notified' in the Official
Journal under the
I believe the latest list of standards for the EMC directive was published
in the Official Journal last October.
http://eur-lex.europa.eu/LexUriServ/sit
/en/oj/2005/c_246/c_24620051005en00010024.pdf
I would also recommend using the safety standards for guidance. The scope
of an EMC standard may n
Thanks,
My brain-freeze.
Mike
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Andy Garcia
Sent: Wednesday, June 14, 2006 10:47 AM
To: emc-p...@ieee.org
Subject: Re: Guidelines for what standard to use
Your starting point is the Offi
Hi Richard,
For CCC, Singapore MAY have an MRA with China. I cannot confirm it at this
time. As of July last year, the US doesn't have an MRA with China. If you
need to know the latest MRA development between the US and China, NIST is a
good contact point. Please let me know if you need conta
Thank very much!!
Best Regards
Charles Grasso
Compliance Engineer
Echostar Communications Corp.
Tel: 303-706-5467
Fax: 303-799-6222
Cell: 303-204-2974
Pager/Short Message: 3032042...@vext.com
Email: charles.gra...@echostar.com;
Email Alternate: chasgra...@ieee.org
_
From: Zmudka, Bob
Your starting point is the Official Journal of the EU.
If you have a product level (type) standard that applies to your device, look
there. Oherwise, you need to apply the generic EMC standard, under which you
are required to meet the requirements of 61000-3-2.
Example;
You have a laboratory
hello Grace,
thanks for the information on the China ROHS, in reading the Q and A's you
provided,
Q's 31 and 34 pertain to the MRA between countries and also allowance of the
testing to be done anywhere
and NOT have to be done in China. Did I read this correctly?
Does China have a list of recogni
The Philippines use a NEMA 5 15 Socket for their 220V distribution.
Does anyone know what plug is or can be approved for use in the
Philippines ??
Thanks!
Best Regards
Charles Grasso
Compliance Engineer
Echostar Communications Corp.
Tel: 303-706-5467
Fax: 303-799-6222
Cell: 303-204-2974
Pager
Dear members,
IEC 61000-3-2 is the applicable standard. My question is how do you know if
this standard needs to be applied to a particular product? Yes, the standard
states that it applies to any piece of equipment that draws <= 16 Amps of
mains power. This leads me to believe that without readin
Hello Charlie,
The United States National Electrical Code does not require NRTL Listing
for general installations, but it is a benefit. Products that are not NRTL
marked are subject to the approval of the local electrical inspector. That
person has the ability to accept unmarked product, but the
As pointed out earlier, the harmonics could be a few dB down from the carrier
at the amplifier output, but the XMIT antenna is more efficient at the
harmonic than at the fundamental by a greater number of dBs than the harmonics
are below the carrier.
From: "Haynes, Tim (SELEX) (UK Capability Gre
Jim,
The table is not wrong. The working voltages in that column are
non-hazardous, so basic, supplementary and reinforced insulation do not
apply. The application for that column would be the use of 5.3.4 (b) for
evaluating SELV or ELV functional insulation.
Regards,
Don Gies, N.C.E
Senior Pr
Jim,
I believe the table is ok. Table 2G note 1 points to clause 5.3.4,
requirements for functional insulation. If you don't meet clearance and
creepage distance requirements for functional insulation, you can choose
500V electric strength test as alternate option. Electric strength
requirement
All,
NOTE – Location Change For The June 28 NPSS Meeting
Location:
BioDefense Corporation
128 Spring Street
Lexington, MA 02062
Contact is Tony Nikolassy at (781) 861-8810 X222
There will be a Northeast Product Safety Society meeting on Wednesday,
June 28th, at BioDefense Corporation at 128 Spr
Interestingly, I have in the last hour had a marketing e-mail from
BSI which is trying to sell me a copy of EN 60204-1:2006. I've spoken
to them and they tell me that it is due for publication on 22
September 2006.
There's some information on the BSI web site about the new standard at:
www.bsi
Group
Client wishes to ship wirelss Telecom equipment to US customer for use at
RBOC central office or commercial sites. The unit meets IEC60950-1, but
does not yet have an NRTL mark.
As I understand it OSHA requires electrical equipment in a place of work
to be NRTL listed / field marked or simi
Hi All,
I think that there is something wrong in the set-up that you are using if the
measured field strength drops when you filter the harmonics out.
If the fundamental is a few dB's larger than any of the harmonics then a
"flat" monitor would be reading the fundamental power / field. Removing
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