Hi Ivan: I agree about the usefulness of noise sources. Also good with my spectrum analyzer for filters, amps, etc. But I haven't sen any cheap ones on ebay at least, HP's and equivalents are around $1000 or so. Am I looking for the right thing? Don
Ivan.Cousins > Does anyone else have the pn3048 software running on a PC-gpib system? > > http://www.ke5fx.com/pn3048.htm > > It has been a number of years since I have used a HP3048A-HP11848A system. > I have two HP11848A test sets and a spare PC or two with NI GPIB cards. > > It looks like this will be much easier to use than the old HP 9236 computer. > > What trials and tribulations have people had in setting up a system with > that software? > > One of the things that can be done is determining the noise floor of the > system. > To determine the noise floor I have used a noise generator with a > programmable step attenuator through a resistive combiner with the > oscillator under test output. > > Increase the attenuation until the noise source on-off level is > undetectable. > This is an easy way to measure the system noise floor. > Noise sources are usually cheap on ebay because most people do not know > how to use them. > As an RF designer they are easy to use for testing receivers. > > Ivan Cousins > _______________________________________________ > 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. > > -- "The power of accurate observation is commonly called cynicism by those who have not got it." -George Bernard Shaw Dr. Don Latham AJ7LL Six Mile Systems LLC 17850 Six Mile Road Huson, MT, 59846 mail: POBox 404 Frenchtown MT 59834-0404 VOX 406-626-4304 Skype: buffler2 www.lightningforensics.com www.sixmilesystems.com _______________________________________________ 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.
