Carl From what you say, the product was failing and now is passing and yet the hardware is identical
Unless I’ve misunderstood you, the lab may struggle to believe that the unit is unchanged if the emissions profile has changed – more importantly they don’t have anything to put on the report to explain what has happened to the device whilst it wasn’t at the lab. If the fix was a firmware change that changed something of the operating mode, I could also see why they would want to re-test Best regards Charlie Charlie Blackham Sulis Consultants Ltd Tel: +44 (0)7946 624317 Web: https://sulisconsultants.com/ Registered in England and Wales, number 05466247 From: Carl Newton <[email protected]> Sent: 17 May 2021 23:26 To: [email protected] Subject: Re: [PSES] South African SABS EMC Testing Hi Rich, I agree with the circumstances that you've described below. But in this case there was no mod. The hardware was returned briefly to the manufacturer for some verification and now the lab is telling us that they have to re-test simply because the hardware left their lab. I understand that there are circumstances in the course of EMC testing where a modification might cause a problem "elsewhere" (I call it squeezing the balloon). It's not uncommon. But in this case there are no changes to hardware and we're being told that this re-testing is being imposed simply because it briefly left their building. The fellow that's managing the project for this NRTL tells me that this is his first S.A. project and he's on a learning curve. Lucky me. Best regards, Carl On 5/17/2021 5:43 PM, Richard Nute wrote: Hi Carl: I cannot confirm that the SABS accreditation requires re-testing. However, this not unusual. I have experienced this same situation in safety testing. If a failure, the complete complement of tests is repeated on the “fixed” unit or another unit. The test house doesn’t know whether the fix affected the other test results. Sometimes, only the fix is tested again – if the test house makes a determination that the fix is unlikely to affect the other test results. They will consider your rationale that the fix does not affect the other test results, but not necessarily accept your rationale. Stay safe, and best regards, Rich From: Carl Newton <[email protected]><mailto:[email protected]> Sent: Monday, May 17, 2021 11:52 AM To: [email protected]<mailto:[email protected]> Subject: [PSES] South African SABS EMC Testing Group, I'm writing to ask if anyone in the group is familiar enough with South African SABS EMC testing through accredited labs to answer my question regarding sequence of testing. I'm trying to get an ITE setup through a major USA NRTL EMC lab in order to get the SABS EMC Certificate of Compliance. We had a radiated emissions issue after the conducted emissions testing was completed upon AC mains and Ethernet port. The hardware setup was returned to the manufacturer and subsequently returned to the EMC lab without change. Now the EMC lab is telling me that their SABS accreditation demands that all conducted emissions be repeated because the hardware setup left the lab's possession (and adjusted their quote accordingly). Can anyone on the list here confirm that SABS lab accreditation mandates this type of action? Thanks, Carl - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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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]>
