On Thu, 9 Jan 1997 hans_mellb...@non-hp-santaclara-om4.om.hp.com wrote:
Item Subject: cc:Mail Text
Author: HANS MELLBERG at non-hp-santaclara,om4
Date:01/09/97 02:03 PM
Please also report on the Australian C-tick mark. How do I get one, and
is it good for New Zealand?
I am involved in making sure our equipment is in compliance with european
CE marking requirements. I have a copy of EUROPEAN NORM EN414 RISK
ANALYSIS written in Italian. I cannot read nor speak Italian. Does anyone
know where I can obtain a copy of this document written in English?
Tony Base
Hello all!
Regarding Craig's question on South African EMC requirements, I have
gather the following answer from the South African Bureau of Standards:
SOUTH AFRICAN EMC AND SAFETY REQUIREMENTS
South Africa have only EMI and safety requirements. The standards
applicable are all the CISPR
Heber,
I have zero experience or training in X-ray technology
(aside form what's in the physics books about Coolidge
tubes) but I'd think you could quantify transparency as 10
log P1/P2 where P1 is tube power needed for a given flux
Just curious, but what is a Shiep?
Michael Barge asks:
(1) Do most labs report an uncertainty measurement in the test report, on
the data sheet, on a certificate of compliance?
(2) How did you generate the measurement of uncertainty for emission
tests? For immunity tests?
AND MOST IMPORTANTLY
(3) What do you tell the
In the USA, NIST has published Technical Note 1297 1994 ed. Guidelines
for Evaluating and Expressing the Uncertainty of NIST measurement
results.
Our NVLAP accreditation requires us to estimate uncertainties in our test
reports. Every Curtis-Straus EMC or Telco test report contains
uncertainty
Jon,
Thanks for the info on the NIST Technical Note. Looks like I need
to get a copy and undertand it.
It is good to know that Curtis-Straus estimates uncertainty.
I am particularly interested in the EMC side of the discussion
and have a couple of questions:
1. In the case of Immunity, I
Tony,
Radiated immunity tests set up a situation where only the unloaded
field is known. You're correct we cannot know for sure what is
actually getting into the EUT. If we had to know what current was
actually entering the ports we would need to monitor it
Response to Tony Fredriksson's comments: See below.
Jon D. Curtis, PE
Curtis-Straus LLC j...@world.std.com
One-Stop Laboratory for EMC, Product Safety and Telecom
527 Great Roadvoice (508) 486-8880
Littleton, MA 01460 fax (508) 486-8828
REMeasurement Uncertainty 13/1/97
The ADLNB group in Europe have published Guide Notes on the 'shared risk'
principle of intepreting test results for regulatory purposes. These
guidelines are used except on interpretations where limit/fail criteria are
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