2600AS-901-01 Rev. B / September 2008
Return to
9-9
Series 2600A System SourceMeter® Instruments Reference Manual
Section 9: Sweep Operation
shows a different example of a list sweep with six measurement points. When the
sweep starts, the current or voltage goes to the first point in the sweep. The unit cycles through the
sweep points in the programmed order.
Figure 9-6
List sweep example
Pulse mode sweeps
A pulse mode sweep can be created for any of the sweep types by configuring the end pulse
action. To configure a pulse mode sweep, use:
smuX.trigger.endpulse.action = smuX.SOURCE_IDLE
To configure a DC sweep, use:
smuX.trigger.endpulse.action = smuX.SOURCE_HOLD
Timers must be used to configure pulse width and period. Refer to
for details on how to
use timers in pulse mode sweeps.
As shown in
, the pulse rise time is the interval it takes the pulse to go from 10% of
maximum value to 90% of maximum value. For the Series 2600A, pulse rise and fall times depend
on the transient response and source output settling times, which are in turn affected by the
selected source range. See the Series 2600A specifications for details on transient response and
source settling times.
Figure 9-7
Pulse rise and fall times
Measure
#1
Measure
#2
Measure
#3
Measure
#4
Measure
#5
Measure
#6
Delay
90%
10%
Rise
Time
Fall
Time
(Times exaggerated
for clarity)
Programmed fixed
or sweep step level
Pulsewidth =
start of rise time to
start of fall time
