>-----Original Message----- >From: drcuthbert [mailto:drcuthb...@micron.com] >Sent: Monday, February 10, 2003 8:12 AM >To: 'Luke Turnbull'; < >Subject: RE: GPIB filtered bulkhead connectors. > > > >Simply terminating the shield at the screened room wall >eliminates common >mode shield current. No more "filtering" needs to be done. > > Dave Cuthbert > Micron Technology > >-----Original Message----- >From: Luke Turnbull [mailto:luke.turnb...@trw.com] >Sent: Monday, February 10, 2003 7:38 AM >To: < >Subject: GPIB filtered bulkhead connectors. > > > >Group, > >Does anyone know where I can buy filtered bulkhead connectors >for running >GPIB cables through screened room walls. Approximate cost? > >Alternatively, does anyone know suppliers and cost for GPIB fibre-optic >extenders. > >Thanks, > >Luke Turnbull >
Filtering of signal or I/O lines at a penetration port is often required. In the case of radiated immunity testing, the applied fields may penetrate the EUT, then travel through the I/O lines, and upset support equipment. This will result in excessive test time at the best, or improper indications of test failure at the worst. In the case of emission testing, support equipment will often inject noise onto the I/O lines, which is then conducted into the EUT. There, it may couple onto the EUT powerlines or be directly radiated. This will result in improper indications of emissions which do not truly originate from the EUT. All test chamber penetrations should be filtered as heavily as possible, consistent with not impairing the integrity of the data signals. Regards, Ed Ed Price ed.pr...@cubic.com Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA USA 858-505-2780 (Voice) 858-505-1583 (Fax) Military & Avionics EMC Is Our Specialty Shake-Bake-Shock - Metrology - Reliability Analysis This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
