> [email protected] said: > > I can confirm that the whole oscillator including oven runs on 12 volts. > > However, you do have to connect two different pins to +12 and > two different > > pins to ground to make it work (see attached). ... > > Nice pictures/graphs. Thanks. > > What's the spike at 60KHz?
No telling, probably leakage from a switching regulator somewhere. Spurs under -150 dBc/Hz are elusive enough to track down, and once you get down below -160 it's often impossible to observe them from one measurement to the next. Digital analyzers like the TSC5120A attempt to remove their own spurs from the measurement, but this process isn't always perfect. The only sane approach is to ignore low-level spurs unless/until they are associated with specific problems. (An actual defect in the oscillator will usually show up at well over -140 dBc/Hz.) > There is another one at a bit under 200 KHz. 200 Hz? That'll be the third harmonic of 60 Hz. Again not worth sweating. -- john, KE5FX _______________________________________________ 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.
