Features and Functions 2
U1731B/U1732B User’s and Service Guide 17
CAL Function
The CAL function is a correction function which enables the LCR meter's
internal parameters and external connector residues to be offset
(corrected) to achieve measurements with higher accuracy. The CAL
function is only available for extremely high or low L, C, and R ranges.
It is highly recommended that you correct extremely high or low ranges
for L, C, and R before making precision measurements. Correction (CAL)
prompts will be displayed automatically every time these ranges are
manually or functionally selected, (e.g. REL, TOL, REC, etc.) and therefore
correction is recommended.
Figure 2-5 Open calibration and short calibration
Measurements performed in extremely high or low ranges that require
corrections are predefined as “open cal” or “short cal”. Refer to the
“Specified Note” column of any of the L, C, or R measurement from
Chapter 4, “U1731B Electrical Specifications,” starting on page 26 or
Chapter 4, “U1732B Electrical Specifications,” starting on page 29 to find
out which of these measurement ranges are indicated with “After open
cal” or “After short cal”. These predefined ranges will require you to
connect the terminal connection as “open” or “short” to achieve the
accuracy in the table.
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