2600S-901-01 Rev. C / January 2008 Return to Section Topics 5-3
Series 2600 System SourceMeter® Instruments Reference Manual Section 5: Sweep Operation
Figure 5-1
Comparison of staircase sweep types
Start
Stop
A: Linear Staircase Sweep
Start
100
B: Logarithmic Staircase Sweep
First Point
C: Custom Sweep
Last Point
10
1
0.1
Stop
Logarithmic scale
shown for staircase
Sweep characteristics
Linear staircase sweeps
As shown in Figure 5-2, this sweep type steps from a start voltage or current value to an ending
(stop) value. A measurement is made at each step after a specified delay period (settling time).
Programmable parameters include the source function, channel, start and stop levels, the number
of sweep points, and the delay (the time between source and measure at each step). The step size
is determined by the start and stop levels, and the number of sweep points:
step = (stop - start) / (points - 1)
The sweep can be either positive-going or negative-going, depending on the relative values of the
start and stop parameters.
When this sweep starts, the output will go to the start source level. The output will then change in
equal steps until the stop level is reached. The delay parameter determines the time duration
before the measurement at each sweep step.
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