Signal Generator Spectral Purity

Application Notes

What is spectral purity?

Spectral purity is the inherent stability of a signal. Does it change in frequency? Stabilities can either be short or long term. Drift or long-term stability is usually defined over a period of time greater than a second. Does the signal drift off frequency in minutes, hours, days, or months? Current signal generator technology generally offers good long-term stability.

The greater concern is for short-term stability or changes in frequency in less than one second. These fluctuations come from non-deterministic signals like noise, shot noise and 1/f flicker noise that modulates the carrier. These affect both phase and amplitude.

×

Please have a salesperson contact me.

*Indicates required field

Select a preferred method of communication*Required Field
Preferred method of communication? Change email?
Preferred method of communication?

By continuing, you are providing Keysight with your personal data. See the Keysight Privacy Statement for information on how we use this data.

Thank you

A sales representative will contact you soon.