In the field of compliance, we are not looking so much for an accurate
measurement (where measurement uncertainty would be important), but rather to
determine if the equipment is under the limit. Most of the time, the equipment
should be comfortably under the limit so that uncertainty of the measurement
should not be an issue.
Rich
From: Brent DeWitt [mailto:[email protected]]
Sent: Sunday, October 30, 2016 2:44 PM
To: [email protected]
Subject: Re: [PSES] Measurement Uncertainty Above 18 GHz
I agree with Dennis. Any measurement of anything has uncertainty. The
applicable question is; can we agree on a uniform method of evaluation of that
uncertainty. Many of the procedures and methods we use in the EMC world are
not perfect, but if we strive to make them as uniform as possible, we may have
common ground for agreement with respect to the results.
Standard disclaimers for personal opinion apply!
Brent Dewitt, AB1LF
Milford, MA
From: dward [mailto:[email protected]]
Sent: Sunday, October 30, 2016 1:46 PM
To: [email protected] <mailto:[email protected]>
Subject: Re: [PSES] Measurement Uncertainty Above 18 GHz
All measurements are subject to uncertainty. Because there is no “standard” for
sites above a specific frequency does not mean that measurements are not
‘uncertain’. It just means we may not know them in relation to a specific
standard. So, while measurement is always “uncertain”, it is basically more
uncertain simply because we have no established gage to judge them by (yet).
Dennis Ward
From: Grace Lin [mailto:[email protected]]
Sent: Saturday, October 29, 2016 4:47 PM
To: [email protected] <mailto:[email protected]>
Subject: [PSES] Measurement Uncertainty Above 18 GHz
Dear Members,
Is it reasonable to request measurement uncertainty (MU) above 18 GHz? CISPR
16-4-2 Edition 2.1 seems only up to 18 GHz.
Is there any standard that addresses MU above 18 GHz?
Is it reasonable to claim that MU is not applicable for radiated disturbance /
emission measurement above 18 GHz as there is no site validation standard
available for frequency above 18 GHz?
Thank you very much and I look forward to hearing from you.
Best regards,
Grace Lin
-
----------------------------------------------------------------
This message is from the IEEE Product Safety Engineering Society emc-pstc
discussion list. To post a message to the list, send your e-mail to
<[email protected]>
All emc-pstc postings are archived and searchable on the web at:
http://www.ieee-pses.org/emc-pstc.html
Attachments are not permitted but the IEEE PSES Online Communities site at
http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used
formats), large files, etc.
Website: http://www.ieee-pses.org/
Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe)
List rules: http://www.ieee-pses.org/listrules.html
For help, send mail to the list administrators:
Scott Douglas <[email protected]>
Mike Cantwell <[email protected]>
For policy questions, send mail to:
Jim Bacher: <[email protected]>
David Heald: <[email protected]>
