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9-4 Return to Section Topics 2600AS-901-01 Rev. B / September 2008

Section 9: Sweep Operation Series 2600A System SourceMeter® Instruments Reference Manual

Figure 9-2

Linear staircase sweep

A linear staircase sweep is configured using a start level, a stop level, and the total number of

points, including the start and stop points. The step size is determined by the start and stop levels,

and the number of sweep points:

step = (stop - start) / (points - 1)

NOTE The number of sweep steps actually performed is determined by the

trigger count. Refer to Section 10 for more information.

The sweep can be either positive-going or negative-going, depending on the relative values of the

start and stop parameters. When the sweep starts, the output will go to the start source level. The

output will then change in equal steps until the stop level is reached. If the trigger count is greater

than the number of points specified, the SMU will start over at the beginning value.

To configure a linear staircase sweep, use the following function:

smuX.trigger.source.linearY

This function configures the source values the SMU will output when performing a linear sweep.

After configuring the sweep you must also enable the source action by setting the following

attribute:

smuX.trigger.source.action

Example:

-- Sweep from 0 to 10V in 1V steps.

smua.trigger.source.linearv(0, 10, 11)

-- Enable the source action.

smua.trigger.source.action = smua.ENABLE

For more information, see smuX.trigger.source.linearY.

Delay

X = Measurement

Measure

Measure Measure

Start

Step

Stop

Measure

Keithley 2600a series User Manual

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