A Day in the Life of Five PPS Sources.. This probably does not qualify as a regular TimeNuts submission as there are no Tau's or 10^-12ths but I could not resist a simple scope capture of the Pulse Per Second output of my new SSR-6t toy from Synergy Systems as it performed its first right-out-of-the box site survey.
See http://youtu.be/kOG9ImT2lvY This is video is a two minute replay of the PPS behavior of two PRS-10s, two TBolts, and the SSR-6t during it's initial 24 hour site survey. The scope captured the relationship of all five PPS outputs at one frame per second. The video clip replays 24 hours of captures at 1000 frames per second. The whole day's PPS behavior is replayed in under two minutes. The Scope is externally triggered from a PRS-10 that is actively disciplined from a TBolt PPS. The Yellow Trace is a second PRS-10 that is also actively disciplined from the same TBolt. Hence the trigger point (center of screen) and the Yellow Trace compare the two PRS-10s that have been running in parallel for a couple of months. The Magenta Trace and the Blue Trace are two other TBolts. (These traces have the nice sharp risetime ) Everybody is fed from a common antenna via a mini-circuits splitter. The Light Blue Trace is the new SSR-6t running in navigation mode. The spreading of the Light Blue Trace is the usual sawtooth dance that most raw GPS PPS outputs display -- The playback rate just smears all the individual sawtooth steps into a pretty waterfall. This is not intended to be a "scientific" submission but I hope someone finds it entertaining and enlightening view of the instantaneous PPS behavior of these devices. Dave _______________________________________________ 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.
