Zero span can show rep rate or modulation but it cannot correlate the MHz bandwidth waveform amplitude the scope sees with the amplitude of any particular spectral component to which the spectrum analyzer is tuned. Further, the spectrum analyzer is a much more sensitive device than the scope, and it typically has about 80 dB of on screen dynamic range, whereas an 8 bit oscilloscope has 48 dB of dynamic range.
> From: Cortland Richmond <[email protected]> > Reply-To: Cortland Richmond <[email protected]> > Date: Sat, 26 Jul 2003 20:45:18 -0400 > To: "Charles Grasso" <[email protected]>, ieee pstc list > <[email protected]> > Subject: RE: Q on Correlation of Votage ripple with a Spectrum Analyser > > > Charles Grasso wrote: >>> What I was(am)trying to do was match the max voltage > as measured on a scope with the value as measured > on a SA. << > > Try zero span on the SA. Compare THAT with the scope. > > Cortland > > ------------------------------------------- > 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 > 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
