> Capturing the line as audio is on my list so I can investigate quirks in the > 60 Hz clocking. That same data should also shed some light in this area. > (But it means the PC doing the collection has to be on the UPS.)
You don't need to use the audio interface to monitor frequency. Use the PPS interface. it will time stamp each positive slope zero crossing. So you get 60 log file entries per second. Sounds like a lot but not really given the size of modern disks. All you need in terms of hardware is a 6V power cube and. Plug it into pins 1 and 5 of a serial port. Time stamps are uS level precision. Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
