9-2 Sweep Operation Models 2500 and 2502 User’s Manual
Sweep types
The three basic sweep types described in the following paragraphs include:
• Linear staircase
• Logarithmic staircase
• Custom
Linear staircase sweep
As shown in Figure 9-1, this sweep steps from a start voltage source value to an ending
(stop) voltage source value. Programmable parameters include the start, stop, and step
source voltage levels.
When this sweep is triggered to start, the output will go from the bias voltage level to the
start source voltage level. The output will then change in equal steps until the stop source
level is reached. With trigger delay set to zero, the time duration at each step is determined
by the source delay and the time it takes to perform the measurement (NPLC setting).
Note that the delay cannot change once a sweep is configured and running, and is the same
for all steps.
Figure 9-1
Linear staircase sweep
Delay
Start
Bias
Stop
Step
Step
Step
Measure Measure Measure Measure
X = Measurement Point
X
X
X
X
Delay
Delay
Delay
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