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Section 3: Functions and features Model 2651A High Power System SourceMeter® Instrument Reference Manual

3-20 2651A-901-01 Rev. A / March 2011

Figure 34: Sweep types

Start

Stop

DC linear staircase sweep

Start

100

DC logarithmic staircase sweep

First Point

DC list sweep

Last Point

0.1

Stop

Logarithmic scale

shown for staircase

Pulsed linear staircase sweep

Pulsed logarithmic staircase sweep

Pulsed list sweep

0.1

100

DC and pulsed linear staircase sweeps (A): With type of sweep, the voltage or current increases or

decreases in fixed steps, beginning with a start voltage or current and ending with a stop voltage or

current. This portion of the figure (A) shows an increasing linear staircase sweep and a pulsed

staircase sweep. Pulsed linear staircase sweeps function the same way that DC linear staircase

sweeps function, except pulsed linear staircase sweeps return to the idle level between pulses.

DC and pulsed logarithmic staircase sweeps (B): In this type of sweep, the current or voltage

increases or decreases geometrically, beginning with a start voltage or current and ending with a stop

voltage or current. This portion of the figure (B) shows an increasing logarithmic staircase sweep and

a pulsed logarithmic staircase sweep. Pulsed logarithmic staircase sweeps function the same way

that DC logarithmic staircase sweeps function, except pulsed logarithmic staircase sweeps return to

the idle level between pulses.

DC and pulsed list sweeps (C): The list sweep allows you to program arbitrary sweep steps

anywhere within the output voltage or current range of the Model 2651A. This portion of the figure (C)

shows a list sweep with arbitrary steps and a pulsed list sweep. Pulsed list sweeps function the same

way that DC list sweeps function, except pulsed list sweeps return to the idle level between pulses.

Sweep characteristics

NOTE

For any of the sweep types, program a pulse mode sweep by configuring the end pulse action. Refer

to Pulse mode sweeps (on page 3-26) for more information.

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