Keysight N9923-90001 User’s Guide 167VVM (Vector Voltmeter) Mode - Option 308VVM Mode SettingsThis setting can be changed at any time without affecting calibration accuracy.How to set Single or Continuous— Press Meas Setup 4— Then choose one of the following:— Single Automatically sets Continuous OFF and causes the FieldFox tomake ONE measurement, th en hold for the next Single key press. TheHold annotation changes to an arrow --> while the measurementoccurs.— Continuous ON Makes continuous measurements. This is the typicalsetting when battery power is not critical.— You can also use Run / Hold +/- to toggle between Single and Continuous.VVM CalibrationCalibration of a VVM Mode measurement can be accomplished using one ofseveral methods depending on the desired level of accuracy. Learn more in“How to Perform a Calibration” on page 104.— The simplest method is to use CalReady which is accurate at the test portconnectors. CalReady does not correct for the loss or delay of jumpercables or adapters that may be used to connect the DUT to the FieldFox.Learn more about CalReady in “CalReady” on page 104.— The next simplest method is to perform a Zeroing.— When using jumper cables or adapters to connect the DUT to the FieldFox,the most accurate method is to perform a QuickCal or Mechanical Cal.Learn more in “Calibration Method Summary” on page 123. Press Zero OFFbefore calibrating (sets Zero to OFF).ZeroingZeroing, also known as Normalization, or Data/Memory, simply “Zeroes” theMagnitude and Phase display when Zero is pressed. All subsequentmeasurements are relative to the measurement that was made when Zero waspressed.When an instrument state is saved with Zero ON, the zeroing data is saved withthe state file, similar to how a calibration is saved with a state file.— When performing a 1-Port Cable Trimming operation, a reference cable isconnected and measured. Then Zero is pressed, and subsequent cables aremeasured and trimmed to match electrical length of the reference cable.— For 2-port measurements, Zero is typically pressed when a THRUconnection is made in place of a DUT. Learn more in “2-Port TransmissionMeasurements” on page 171.
