All I can see that my manager would prefer to use Neven's approach - it is probably much cheaper than buying clamps. However, does anybody have any practical experience of this? A reply from an accredited test house would be welcomed!
Thanks Ian Gordon From: [email protected] [mailto:[email protected]] Sent: 29 January 2003 05:22 To: [email protected] Subject: Re: EN55022:1998 + A1:2000 Instead of paying big bucks for the clamps (I am not sure what the price is, but I'm sure it is too much anyway :), why not buying a bucket of ferrite doughnuts that can be used over cables. Or, when possible, building in-line adapters out of sections of cables (maybe 1m long) and lining them up with ferrites. I'd select a combination of ferrites to cover 30 MHz to about 300 MHz. The high frequencies will be radiated anyway by the segment of the cables close to the DUT. Taking a little more thorough approach, I'd check the impedance with the lineup fixed over a defined height above a GND plane. (Not sure if that would make a big practical difference.) Neven > > A1 to EN55022:1998 requires the use of ferrite clamps on all cables leaving > the table-top EUT for a connection outside the test site. Are there any > other manufacturers of these clamps other than Fischer Custom > Communications? > > Richard Woods > Sensormatic Electronics > Tyco International _____________________________________________________________________ This e-mail has been scanned for viruses by the WorldCom Internet Managed Scanning Service - powered by MessageLabs. For further information visit http://www.worldcom.com 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: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] 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
