If I have several crystals and I want to find the ones with good phase noise, do I have to let them run in their ovens for a week/month, or can I just turn them on and measure the phase noise?
I'll make a distinction between time domain and frequency domain measurements.
A long warm-up is helpful if you want to measure frequency stability (e.g., sigma of tau, or ADEV). But, depending on the equipment you use, a phase noise measurement (e.g., script L of f) doesn't require the source to be long-term stable; you get pretty much the same phase noise results in the first minute as you would a day or week later. /tvb _______________________________________________ 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.
