RE: Immunity Problems ??

1999-09-08 Thread SparacinoG
Hello Joe, Without knowing anything about your instruments, their operation or environment I'll throw-out some general things that I would investigate first: Inside your lab / building: * ESD control in your Lab - Check Mats - Straps etc. * Any cell or 2-way communication (maintenance

RE: Immunity Problems ??

1999-09-08 Thread UMBDENSTOCK, DON
-- From: Douglas C. Smith[SMTP:d...@dsmith.org] Reply To: Douglas C. Smith Sent: Wednesday, September 08, 1999 1:13 AM To: Price, Ed Cc: 'marti...@pebio.com'; emc-p...@majordomo.ieee.org Subject: Re: Immunity Problems ?? Hi All, ESD or EFT could

RE: Immunity Problems ?? Insufficient Data

1999-09-08 Thread Lacey,Scott
Joe, More data will be required before the group would be able to help with a diagnosis. You say that each instrument is on it's own line. Are you referring to an ac power line? Also: Is each instrument provided with it's own isolated ground receptacle? Are they networked? If so, is the

Re: Immunity Problems ??

1999-09-08 Thread Douglas C. Smith
Hi All, ESD or EFT could be the culprit. I would suggest putting a current probe around one of the instrument cables and connect to a digital scope and see if you can trigger on a noise event. If you are lucky, the instrument with the current probe will be the one that goes down. Alternatively,

RE: Immunity Problems ??

1999-09-07 Thread Price, Ed
Joe wrote: -Original Message- From: marti...@pebio.com [SMTP:marti...@pebio.com] Sent: Tuesday, September 07, 1999 2:04 PM To: emc-p...@majordomo.ieee.org Cc: marti...@pebio.com Subject:Immunity Problems ??