In a message dated 1/6/2008 15:01:25 Pacific Standard Time, [EMAIL PROTECTED] writes:
>85671A package or mine, how _exactly_ are you turning the dBc/Hz values you >get from (say) the 8561E into your ~-120 dBc/Hz numbers? Let's hear the >step-by-step procedure on that, and the problem should reveal itself. Hi John, by selecting a 1Hz RBW on the 8561E. The APII analyzer should have a 1Hz BW normalization as well, although I checked in the user manual again and it just specifies "dbm" without regards to RBW. How does one calculate RBW from an FFT? Is it the width of a given FFT bin? I will check this again, and try to increase the number of samples. But even with say a 10Hz RBW I would expect the noisefloor to only rise 10xlog(1/BW) or 10dB, much less error than what I am seeing. bye, Said **************Start the year off right. Easy ways to stay in shape. http://body.aol.com/fitness/winter-exercise?NCID=aolcmp00300000002489 _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
