Introduction 1Keysight U1731C/U1732C/U1733C User’s Guide 33Sets the tolerance mode.– Connect/insert an appropriate component intothe input terminals/sockets and press toset the value shown on the secondary displayas the standard reference value.– Press again to cycle through the varioustolerance values (1% to 20%).Turns the LCD backlight on for 15 seconds(default) or off.– To change the backlight time-out refer to“Changing the auto power-off and backlighttime-outs” on page 87.page 54andpage 22Sets the null/relative mode.– The displayed value is saved as a reference tobe subtracted from subsequentmeasurements.– Press again to cancel the null mode.Enters the open/short calibration mode for theselected range and test frequency.– Follow the prompts on the screen (open orshort connector) and press to begin thecalibration process.– The LCR meter will return to normal displaywhen the calibration is complete.page 61andpage 62Table 1-5 Keypad functions (continued)Legend Function when pressed for: Learn moreon:Less than 1 second More than 1 secondTol%Tol%Tol%CalNullCalNullCalNull