Do you really have a .01 PPM voltage reference? A personal JJ? That's taking this hobby to a new level.
> > Daniel, > They are made like that... Problem is with drift. > When you cal a 3458A the first step is to short the inputs and wait for the > thermals to die. Then you do a Cal 0 and the incitement stores all the 0 > offsets for that set of terminals. they you switch to the other set and do it > again. > Next step is apply 10 votes to the terminals or in my case it is 9.9999411 and > enter cal 9.9999411 front and back set of terminals. remove the voltage and > plug in a 10k standard resistor and in my case enter cal 9999.884 for front and > back. In most cases AC does not have to be done. The meter is comparing its > measure values with the values entered and calculates the correction factor > to be used each time a value is displayed. > Most good meters now days do have a null function so you can look at drift > or compare 2 values. _______________________________________________ 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.
