I dad that once, It was bad contact or loos contacts on the brushes to ground in addition to very dry and not compliant humidity condition. In theory I think you should have at least 30% humidity,
Sincerely, Dieter Paasche Senior Product Developer, Electrical CHRISTIE 809 Wellington Street North Kitchener, ON N2G 4Y7 Phone: 519-744-8005 ext.7211 www.christiedigital.com<http://www.christiedigital.com/> This e-mail message (including attachments, if any) is confidential. Any unauthorized use, distribution or disclosure is prohibited. If you have received this e-mail message in error, please notify the sender by reply e-mail or telephone and delete it and any attachments from your computer system and records. From: Paolo Roncone <paoloc...@gmail.com> Sent: Wednesday, May 11, 2022 12:22 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] ESD generated by rotating turntable CAUTION:This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe. Hi everybody we are considering doing radiated emissions scans during the turntable slow rotation (about 5min/360deg) in a chamber with turntable flush on the metal floor and sliding contacts. The likely issue is ESD generated peaks coming from the sliding contacts. Anyone has experience with this setup, and in that case, what kind of mitigation techniques (if any) would be available? I have direct experience with another chamber with a different kind of turntable (not flush, , wooden structure raised about 20cm from the ground plane) and have no issues in the 30MHz to 18GHz range. Thanks in advance Paolo - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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