Read about the synthesizer design of that generator here: https://ia600407.us.archive.org/10/items/Hewlett-Packard_Journal_Vol._42_No._2_1991-04_Hewlett-Packard/Hewlett-Packard_Journal_Vol._42_No._2_1991-04_Hewlett-Packard.pdf
Dave, looking at the graph you posted it appears to me that the shift is 10 Hz, not 100 Hz. It appears to me that is an audio spectrogram. I have no idea if the frequency shift is in the generator or receiver. -- Bill Byrom N5BB On Thu, Dec 22, 2016, at 10:10 AM, David wrote: > On Thu, 22 Dec 2016 12:39:27 +0000, you wrote: > >> But I find it a bit odd that HP would have a 1 Hz software option >> on this >> instrument, if the instrument jumped up/down 100 Hz. >> >> Now I don't yet have the 1 Hz option programmed in, and it might well >> change the behavior completely, but I'd still like to find a >> way, if one >> exists, of checking this with the equipment I have. >> >> The signal generator is no longer supported, but I could try my >> luck seeing >> if there are any known problems with this unit, or firmware upgrades >> available - currently revision 29, May 1991. >> >> ... >> >> Dave > > I agree with Bill, maybe something is going on at the other end. > > While I do not expect this sort of thing from HP, could they have > deliberately designed the sweep generator to include those 100 Hz > bumps unless the 1 HZ software option was purchased? > > Like Paul, I would not expect the kind of stability you need from a > sweep generator but that 100 Hz jump is just weird. It does kind of > remind me of popcorn noise but without a time scale and a longer > record, it is difficult to tell. > _________________________________________________ > 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. _______________________________________________ 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.
