Model 2461 Interactive SourceMeter® Instrument Reference Manual Section 3: Functions and features2461-901-01 A/November 2015 3-55Logarithmic staircase sweepA logarithmic staircase sweep is similar to a linear staircase sweep. The only difference is that thesteps are scaled logarithmically.The steps in a logarithmic staircase sweep increase or decrease geometrically, beginning with a startvoltage or current and ending with a stop voltage or current. The figure below shows an increasinglogarithmic staircase sweep.Figure 112: Logarithmic staircase sweepSetting up a sweepDefining and generating a sweep creates a new trigger model that will replace an existing triggermodel. If you want to preserve the existing trigger model, save a user-saved setup. See Savingsetups (on page 2-137) for information on saving an existing trigger model as part of a user-savedsetup.Before setting up the sweep, set up the instrument for the test you will run. Typical settings you canset for a sweep include:• The source function• The measure function• Current or voltage limit• Source readback• Voltage protection limits• 2-wire or 4-wire sense mode• Front or rear terminal selectionIf you change settings after you set up a sweep, those changes will also affect the sweep the nexttime it is initiated.
