Section 8: TSP command reference Model 2461 Interactive SourceMeter® Instrument Reference Manual8-172 2461-901-01 A/November 2015smu.measure.senseThis attribute selects local (2-wire) or remote (4-wire) sensing.Type TSP-Link accessible Affected by Where saved Default valueAttribute (RW) Yes Restore configurationInstrument resetPower cycleMeasure configuration listFunction changeConfiguration scriptMeasure configuration listsmu.SENSE_2WIREUsagesensing = smu.measure.sensesmu.measure.sense = sensingsensing Two-wire sensing: smu.SENSE_2WIREFour-wire sensing: smu.SENSE_4WIREDetailsThis command determines if 2-wire (local) or 4-wire (remote) sensing is used.When you use 4-wire sensing, voltages are measured at the device under test (DUT). For the sourcevoltage, if the sensed voltage is lower than the programmed amplitude, the voltage source increasesthe voltage until the sensed voltage is the same as the programmed amplitude. This compensates forIR drop in the output test leads.Using 4-wire sensing with voltage measurements eliminates any voltage drops that may be in the testleads between the Model 2461 and the DUT.When you are using 2-wire sensing, voltage is measured at the output connectors.When you are measuring resistance, you can enable 4-wire sensing to make 4-wire resistancemeasurements.When the output is off, 4-wire sensing is disabled and the instrument uses 2-wire sense, regardless ofthe sense setting. When the output is on, the selected sense setting is used.Examplesmu.measure.func = smu.FUNC_RESISTANCEsmu.measure.sense = smu.SENSE_4WIRESet the measurement function to resistance.Set the sense to 4-wire remote.Also seeTwo-wire local sense connections (on page 2-90)Four-wire remote sense connections (on page 2-92)
