Filters ring when you pulse them.
toggle quoted message
Show quoted text
On Monday, August 16, 2021, 02:10:02 PM CDT, Syd via groups.io <nhuq1@...> wrote:
In the manual there is a Transform setup for the bandpass mode and here is the picture of the results attached.? I think this setup is strictly for measuring band pass filters, correct me if I'm wrong.? From the pix I can see that the time being scanned from the frequency setup is from 0 ns to 43 ns shown on the bottom. From what I am seeing I think ch0 shows the pulse being generated and ch1 is showing the results from the BPF. The 20.0n/-0.14 and 10.0n/-0.02 scaling for ch0 and ch1 at the top I thought was showing the scaling per division and the level, but now I am not sure what it is telling me.? Then again the white marker notation is showing 4ns 0.4m?? How do I interpret that? Additionally, what is the TDR measurement of a band pass filter giving me information wise that I can't get from scanning the BPF and looking at the logmax output over a span of frequencies?? At least from the logmax method I can see the characteristics of the filter, and I don't see anything like it with this method since it is in the time domain.
syd/wt1v
