LCR-914/915/916 User Manual 
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When “OPEn” appears on the sub display, make the terminal or 
the SMD test probe open, and press the CAL button to start the 
open calibration. About 30 seconds later, the result of the open 
calibration appears on the main display. If the result is “pass”, 
press the CAL button to proceed to the next step. If the result is 
“fail”, press the CAL button to exit the function.