B&K Precision 879B - Manual - Manual (Page 52)

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will be done when the button is pressed once.
Within a few seconds, the meter will return to normal
display and meter will be calibrated based on the test
frequency and settings selected prior to entering the
calibration mode.
Figure 7 - Open Calibration
Short Calibration
Short calibration can be done when meter first enters
into calibration mode. If the input sockets or terminals
have nothing connected, the display will be like Figure
7. For short calibration, simply put a shorting bar or a
short piece of conductive metal (i.e. paper clip) across
the “ +” and “-“ input sockets or terminals. Within 2
seconds, the meter will display the same screen as