B&K Precision 889B - Manual - Manual (Page 16)

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2.2 Making Measurement
2.2.1 Open and Short Calibration
The 889B provides open/short calibration capability so the user can get better accuracy in measuring high and
low impedance. We recommend that the user perform open/short calibration if the test level or frequency has
been changed.
 Open Calibration
First, remaining the measurement terminals at the open status, press the Open key then the LCD will display:
This calibration takes about 15 seconds. After it is finished, the 889B will beep to show that the calibration is
done.
 Short Calibration
To perform the short calibration, insert the Shorting Bar into the measurement terminals. Press the Short key
then the LCD will display:
This calibration takes about 15 seconds. After it is finished, the 889B will beep to show that the calibration is
done.
2.2.2 Relative Mode
The relative mode lets the user to make a quick sort of a bunch of components. First, insert the standard value
component to get the standard value reading. (Approximately 5 seconds to get a stable reading.) Then, press the
Relative key, the primary display will reset to zero. Remove the standard value component and insert the
unknown component, the LCD will show the value that is the difference between the standard value and unknown
value.
2.2.3 Range Hold
To set the range hold, insert a standard component in that measurement range. (Approximately 5 seconds to get
a stable reading.) Then, by pressing the Range Hold key it will hold the range within 0.5 to 2 times of the current
measurement range. When the Range Hold is pressed, the LCD will display: