Regaring the question on MA Approvals for China:
China requires safety approvals for mining, known as MA (Mei Anquan = Coal
Safety). Without MA approval, mining equipment is not permitted to go
underground. China has developed a specific approval system for equipment
manufactured in China and
In message csxz3ympa4pgf...@jmwa.demon.co.uk, dated Mon, 7 May 2007,
John Woodgate j...@jmwa.demon.co.uk writes:
Requirements, including what teats
Harrumph! 'tests', of course.
are to be done, are specified in Product standards.
--
OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and
From: scott barrows
Sent: Monday, May 07, 2007 12:03 PM
Hi all,
With dual power cords think:
1. Single fault scenario and how much current will then go
through each cord or a single cord if there is a failure of
some sort. This is a design thing, easier with two power
supplies
In message
768ee6ab7d56d54bb5000ec2dd113e710198c...@de01exm61.ds.mot.com, dated
Mon, 7 May 2007, Leber Jody-G19980 jody.le...@motorola.com writes:
Are there any surge requirements for the DC power port (supplied by LPS
or Class 2 source)?
61000-4-5 is a Basic Standard. Basic Standards only
Are there any surge requirements for the DC power port (supplied by LPS or
Class 2 source)?
Best Regards,
Jody Leber
Senior Regulatory Engineer
jody.le...@motorola.com
http://www.motorola.com/producttesting
blocked::http://www.motorola.com/producttesting
Motorola Product Testing
Hi all,
With dual power cords think:
1. Single fault scenario and how much current will then go through each cord
or a single cord if there is a failure of some sort. This is a design thing,
easier with two power supplies then splitting the input.
2. Limits to the current on the branch circuit.
More detail on restrictions would be of interest, even those that are not
directly a restriction. For example the entry for the US does not point out
that the uppermost channels of the ISM band are indirectly banned because of
the requirement not to have the skirts extend above 2483.5MHz.
Jim
Thanks everyone. I've got choices in California worth looking into now: a
couple of TUV locations and NTS.
Jim Eichner, P.Eng.
Manager - Compliance Engineering and SW Test
Xantrex Technology Inc.
phone: (604) 422-2546
fax: (604) 420-1591
e-mail: jim.eich...@xantrex.com
web:
I've seen this done on server class computers before. Two power
supplies, each with its own cord. I'm not a safety engineer (just EMC),
but I seem to recall the need for a sticker reminding anyone opening the
chassis that there was more than one source of AC power feeding the
product.
Ghery
From: Scott Aldous
Sent: Friday, May 04, 2007 3:14 PM
If a fuse or circuit breaker is used, then the short circuit
current limit is actually 1000 divided by the open circuit
voltage, per table 2C
Care should be taken here. Maximum available current might not occur at
short-circuit.
Sections 9.4 and 9.5 of EN 300 208-1 V1.1.1 specifically use a tag
during the test. I don't see a requirement for a tag to be present for
FCC testing, although I have read that tags that translate the reader
frequency must be tested with the reader. Unfortunately I do not
remember where I read
Because the VSA is used to demod a single that has been digitally
synthesized, my SWAG would be that this instrument seems to be intended
for something like software-defined radio; e.g., the military's Joint
Tactical Radio System (JTRS) or the Software Communication Architecture
(SCA).
There is a
Are there test facilities testing RFID equipment without tags? I am being
told that RFID equipment does not require RFID tags present in the field
during testing for both the US and Europe. Is this true? I thought it was
just common sense to use the tags.
Bob Heller
3M EMC Laboratory, 76-1-01
St.
Dear Members,
Does any one have experience, in regard to regulatory compliance measurement,
with the above referenced equipment and would like to share experience? The
informaiton for this equipment can be found at
http://sine.ni.com/nips/cds/view/p/lang/en/nid/203038
Hi All,
I have posted my latest Technical Tidbit at http://emcesd.com. The
title is: Placement of Parallel Capacitors on a Printed Wiring Board
(for troubleshooting or a quick fix)
Abstract: Capacitors are sometimes added in parallel to an existing
capacitor on a printed wiring board to
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