Of course, actually that was the point of my posting. Most people assume that what they read on the instrument's display is the truth. As long as they read on the proper side of the requirement, (less than a max, or more than a min) all is good.
I have been in this business for 30 years. They all do it, Raytheon, Lockheed-Martin, Boeing, Northrop-Grumman, just to cite the better known. The truth is usually a little more complicated than that. Didier > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Mike S > Sent: Saturday, May 10, 2008 9:19 AM > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] HP 5370B > > At 09:22 AM 5/10/2008, Didier Juges wrote... > >Most microwave network analyzers have amplitude resolution > of 0.01dB, > >while their accuracy is just around 1dB in most cases. > > > >I have had to argue too many times that a piece of equipment > with a 2dB > >p-p requirement on flatness was just fine when it measured 2.01dB on > >the HP network analyzer. I would not have gotten in that argument if > >the data had been 1.99dB. Go figure. > > I figure you're both wrong. If the measuring instrument is no > better than 1 dB absolute, you can't expect to do it - a flat > line measurement could represent an actual + or - 1 db, the > limit of the spec. > No virus found in this outgoing message. Checked by AVG. Version: 7.5.519 / Virus Database: 269.23.11/1422 - Release Date: 5/8/2008 5:24 PM _______________________________________________ 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.
