I posted a plot of calculated resistor values versus temperature in the LTZ1000 thread on the EVV blog yetserday. Email me if you can't find it.
I guess the 3458A was specified to be used at north pole and desert heat, that's why they have such a high temperature setting. They could have a "laboratory version" and a "field version" of the reference.... I have a NI-4071 PXI DMM with a LTZ1000 and it uses 14.3 ratio to fulfill the PXI specified temperature range. Still higher than optimal for stability but the temperature in my PXI rack is typically 40C at 20C room temperature. my2C _______________________________________________ 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.
