In message <[email protected]>, dated Thu, 19 Apr 2007, Derek Walton <[email protected]> writes:
>a SA was used to look at the band, left in peak hold mode for 5 mins... >nothing showed upon the trace.... This is whats got us puzzled... Did you set the RF and video bandwidths so as to cope with the 'very fast' pulse you diagnosed? If you did, the SA's own noise might be a problem. If you didn't, you won't see the pulse, of course. You can perhaps detect a frequency-hopper, of course, by tuning your ham receiver. A very short pulse will show up at every frequency across a band, while a frequency hopper MAY show up only at discrete frequencies. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk There are benefits from being irrational - just ask the square root of 2. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html 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] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________
