Update: The "freq difference" with a 1-second gate time is not so useful when the difference is less than a couple of Hz. So, I added a simplistic graphic to the display, like an O-scope, updated 6 times per second. Also added a calculation of the Period (in seconds).
Pete On Sat, Jun 20, 2020 at 10:15 PM Peter McCollum <[email protected]> wrote: > Hi All, > Just joined. Not sure if I qualify as a "Nut", but I'm working on it :-) . > Today I mostly finished the following project: > > A friend gave me the idea of wanting something to adjust the oscillator on > a Nixie clock, but not owning a decent counter. > I had a CW12-TIM module that I'd never used. > The idea was to set the CW12 to match the external oscillator's freq, then > measure/display the difference between the 2 freqs, so that the oscillator > could be tweaked. > The "Difference" display is in Hz, counted by the MCU with a 1-second gate. > The MCU (on the red board) is a T.I. MSP430FR2355. > Comments/questions welcome! > > FYI, Time/freq-related stuff I have: > HP101A, HP215A, HP500B, HP521C, HP522B, FR-38B, HP5245L, HP5512A, HP5316A, > HP5345A, HP115AR, HP59309A, and a bunch of other test gear (mostly HP, some > Tek and others). > > Pete > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
