I would think that if the measurements were taken in a chamber and the product emissions were characterized and amplitudes known and the analyzer was a good quality one, justification could be made to eliminate the preselector.
I suspect the requirement was established during the days we all were using OATS. Kenneth Wyatt Woodland Park, CO Sent from my iPhone. > On Oct 22, 2015, at 12:58 PM, Sundstrom, Mike <[email protected]> > wrote: > > So the SA is not in overload, which could give a wrong amplitude otherwise. > > Thanks, > > Michael Sundstrom > Garmin Compliance Engineer > 2-2606 > (913) 440-1540 > KB5UKT > > “Never give up on a dream just because of the time it will take to accomplish > it. > The time will pass anyway.” > Earl Nightingale > > From: Grasso, Charles [mailto:[email protected]] > Sent: Thursday, October 22, 2015 1:53 PM > To: [email protected] > Subject: [PSES] Preselector requirement in ANSIC63.4 -low PRF > > Hell all, > > ANSI C63 *requires* the use of a preselector on an SA when making QP > measurements > of a signal with a low repetition rate (lower than 20Hz or less). Does > anyone know why? > > Best Regards > Charles Grasso > Compliance Engineer > Echostar Communications > (w) 303-706-5467 > (c) 303-204-2974 > (t) [email protected] > (e) [email protected] > (e2) [email protected] > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. To post a message to the list, send your e-mail to > <[email protected]> > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used > formats), large files, etc. > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) > 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]> > > > > CONFIDENTIALITY NOTICE: This email and any attachments are for the sole use > of the intended recipient(s) and contain information that may be confidential > and/or legally privileged. If you have received this email in error, please > notify the sender by reply email and delete the message. Any disclosure, > copying, distribution or use of this communication (including attachments) by > someone other than the intended recipient is prohibited. Thank you. > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. To post a message to the list, send your e-mail to > <[email protected]> > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Attachments are not permitted but the IEEE PSES Online Communities site at > http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used > formats), large files, etc. > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) > 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]> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) 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]>
