> ... >> [snip] > If you need a sine wave output but don't want to change anything inside, > just add a lowpass filter. > A 5th order LPF (three inductors/ 2 caps or vice versa) should give you > a clean sine wave output. > Just add a coupling cap to remove the DC component. > > Adrian > > _
Thank you, Adrian. I'll pursue both options, internal fixes and external filter. A multi-pole LPF is easily understood, and I don't believe I care about passband ripple, though I wonder a little about the effect of the coupling on phase changes (i.e., does this have any unfortunate effect on adev?). I still don't know if a crystal ladder filter will suppress the harmonics, but I did get the answers that make me not need to ask anymore (1. fix the internal filter, 2. use the high Q xtal filter for optional removal of close-in noise) Given time I would do all of these things, but I may not get to them all! Leigh. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
