To Next Page

To Previous Page

5-8 Source-Measure Concepts

Sweep waveforms

There are four basic sweep types to select from: linear staircase, logarithmic staircase, cus-

tom, and source memory. Three of the sweeps are shown in Figure 5-3. The linear staircase

sweep goes from the start level to the stop level in equal linear steps. The logarithmic staircase

sweep is similar except it is done on a log scale with a speciﬁed number of steps per decade.

The custom sweep lets you construct your own sweep by specifying the number of measure

points and the source level at each point. For a source memory sweep, up to 100 setup conﬁgu-

rations can be saved in memory. When the sweep is performed, the setup at each memory point

is recalled. See Section 9 for more details on sweep operation.

An SDM cycle is performed on each step (or point) of the sweep. Thus, one measurement

will be performed at each step (level). The time spent at each step (level) depends on how the

SDM cycle is conﬁgured (i.e., source delay, measure speed) and the trigger delay (if used).

Bias

Start

Stop

Linear Staircase Sweep

Bias

Start

100

Logarithmic Staircase Sweep

Bias

First Point

Custom Sweep

Last Point

0.1

Stop

Logarithmic scale

shown for staircase steps

Figure 5-3

Three basic sweep

waveform types

Keithley 6430 User Manual

Other manuals for Keithley 6430