-------- In message <[email protected]>, Jerry Hancock writes: >Hello all, > >I’ve been running plots of my various and rebuilt volt standards (aka DAS-46 >which we have working now) and during that process, someone mentioned to me >about using two meters at once and then correlating the outputs. I have a >pair of both 3457a’s and 3456a’s, and though the 3457a has the extra dig >it, the 3456a meters seem to be more stable. > >So assuming I get a time-stamped dataset from both meters, for instance the >3457A meters in hi-res mode, would I just average the two samples?
First thing you should do is plot them in X:Y mode and let that graph guide you. If you get a straight line from lower left to upper right, the two meters track each other and averaging will get you little more than a sqrt(2) reduction in noise. If you can, also record a representative room temperature, plot that on one axis and the two meter readings on the other, then think creatively about the result... -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [email protected] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
