Model 2601B-PULSE System SourceMeter Instrument Reference Manual Section 4: Sourcing and measuring
2601B-PULSE-901-01A April 2020 4-61
Speed programming example
Use the NPLC command to set the speed of the integrating analog-to-digital converter (ADC). The
programming example below illustrates how to set the speed to 10 PLC:
-- Set NPLC to 10.
smua.measure.nplc = 10
Sweep operation
The following topics describe how to use the 2601B-PULSE for sweeps.
The 2601B-PULSE can perform source-only sweeps, source-and-measure sweeps, or measure-only
sweeps. The 2601B-PULSE SMU can generate both DC and pulsed sweeps. The 2601B-PULSE
pulser can only generate pulsed sweeps.
The following topics describe the following types of sweeps:
• DC and pulsed linear staircase sweeps
• DC and pulsed logarithmic staircase sweeps
• DC and pulsed list sweeps
DC and pulsed linear staircase sweeps: With this 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. The figure below 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 that pulsed linear staircase sweeps return to the idle level between pulses.
Figure 57: DC and pulsed linear staircase sweeps
DC and pulsed logarithmic staircase sweeps: 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. The figure below 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 that pulsed logarithmic staircase sweeps return to the
idle level between pulses.
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