Calibration Executive 2.2: How do I choose the correct uncertainty file?

[auctoron]

When asked to select an Uncertainty File for a supported standard, I'm not sure which one to select. There are two files for the HP34401A, for example, with the text "90 Day" and "1 Year". I assume this is the Calibration interval for the DMM, or is it the period of time since the last calibration?

[Travis G.]

Hello auctoron,

The time interval listed in the uncertainty file names is the period of time since the last calibration for that device.  For example, if the HP34401A DMM was calibrated in the last 90 days, use HP34401A 90 Day.txt, and if instead it was calibrated last sometime between 90 days and 1 year, use HP34401A 1 Year.txt.

I hope this helps,

Travis G.
Applications Engineering
National Instruments
www.ni.com/support