Hi, I agree with you. Some HP spectrum analyzer have internal 50 and 100 Hz spurs down to -80dBc due the fan as described in the manual. It can be the spurs are from the test set and/or connection cables. If your oscillator is battery powered you can be sure the spurs are not from the source. Anyway I think the -130 dBc value is a very good response.
Luciano www.timeok.it From: "time-nuts" [email protected] To: [email protected] Cc: Date: Tue, 12 Jul 2016 11:44:31 +0100 Subject: [time-nuts] OXCO Spurious Output at Line Frequencies Hello, I have a customer who is measuring the phase noise of my 10 MHz ultra-low phase noise frequency standard. He is seeing spurious signals at line frequencies (50 and 100 Hz as we are in Europe) at a level around -130 dBc. My opinion is that it's impossible to get much better than that. Even running on batteries make little difference, since the equipment is in a test rack with AC signals everywhere. Even the £50k R&S test set he is using only quotes a spurious spec of -90 dBc. What experience does anyone have here? Best Regards Martyn _______________________________________________ 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. _______________________________________________ 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.
