I am attempting to find information needed for Phase Noise accreditation. I would be interested in any resources that would help understand and prepare for accreditation. I have years making Ultra Low Phase Noise Measurements but know little about formal accreditation. Thanks; Tom Knox SR Test and Measurement Engineer Phoenix Research 4870 Meredith Way Apt 102 Boulder, Co 80303 Formerly of: 357 Fox Lane Superior Co 80027 303-554-0307 actast@hotmail.com https://www.thedenverchannel.com/news/marshall-fire/superior-man-moving-forward-after-losing-dream-research-lab-during-marshall-fire "Peace is not the absence of violence, but the presence of Justice" Both MLK and Albert Einstein

Hi Tom, I recommend you to talk to the Phase Noise section of the NIST Time and Frequency department, that is talk to Craig Nelson and Archita Hati. Among other things they build calibrators which is used to support the calibration for traceability. The NIST phase noise calibrations is documented in a nice document, so nice that we also refer to it from the updated IEEE Std 1139-2022. See here: https://www.nist.gov/programs-projects/pmam-noise-calibration-services See "Calibration uncertainty for the NIST PM/AM noise standard". Accreditation in itself is a bunch of paperwork, and you can expect them to come over to inspect things in the process. Established routines on how to measure this or that needs to be documented and followed. So does althernative methods, so one should be a bit imaginative already in that phase. You need to follow at least ISO/IEC 17025. Searching for accreditation in US resources turn up plentiful of resources. I suggest locating them and follow the thread. There is formal parts that needs to be achieved regardless of what you measure, and then there is the details for a "laboratory" and then further down you document the procedures and traceability of each measurement type you aim to do. Expect this paperwork and cost related to it be an effort and investment you have to do before you get "to the fun part" of phase noise measurements. However, once you achieved it and maintains it, addition of additional capabilities should be natural. By the way, NPL has free online coarses in metrology and lately also in time and frequency. You get nice little certificat and all. How useful that is in this context I have not yet investigated, but at least it does not hurt. Cheers, Magnus On 2023-03-23 23:54, Tom Knox via time-nuts wrote: > I am attempting to find information needed for Phase Noise accreditation. > I would be interested in any resources that would help understand and prepare for accreditation. > I have years making Ultra Low Phase Noise Measurements but know little about formal accreditation. > Thanks; > Tom Knox > SR Test and Measurement Engineer > Phoenix Research > 4870 Meredith Way Apt 102 > Boulder, Co 80303 > Formerly of: > 357 Fox Lane > Superior Co 80027 > 303-554-0307 > actast@hotmail.com > > https://www.thedenverchannel.com/news/marshall-fire/superior-man-moving-forward-after-losing-dream-research-lab-during-marshall-fire > > "Peace is not the absence of violence, but the presence of Justice" Both MLK and Albert Einstein > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com

On 3/23/23 3:54 PM, Tom Knox via time-nuts wrote: > I am attempting to find information needed for Phase Noise accreditation. > I would be interested in any resources that would help understand and prepare for accreditation. > I have years making Ultra Low Phase Noise Measurements but know little about formal accreditation. Can you give a more specific example of an accreditation requirement?  I know that labs can have things like a certified Quality Management System (QMS) and other processes under, say, ISO-9001 or ISO/IEC 17025.  There's also things like NADCAP, although I wouldn't think phase noise measurements fit in the NADCAP bucket. Those are mostly about record keeping and process control and documentation - Ultimately are you measurements traceable to some standard, are you reporting results in a standardized way, and so forth. Typically, you have all your documentation, and then an independent assessor comes in and determines whether you meet the requirements for certification. They'll check to see if the way you do your work matches the process documentation, for instance. > Thanks; > Tom Knox > SR Test and Measurement Engineer > Phoenix Research > 4870 Meredith Way Apt 102 > Boulder, Co 80303 > Formerly of: > 357 Fox Lane > Superior Co 80027 > 303-554-0307 > actast@hotmail.com > > https://www.thedenverchannel.com/news/marshall-fire/superior-man-moving-forward-after-losing-dream-research-lab-during-marshall-fire > > "Peace is not the absence of violence, but the presence of Justice" Both MLK and Albert Einstein > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com >