4-4
Sweeps
Model 6220/6221 Reference Manual
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Sweep characteristics
Linear staircase sweeps
As shown in
, this sweep type steps from a start current value to an
ending (stop) current source value. Programmable parameters include the start,
stop, and step current source levels.
When this sweep is triggered to start, the output will go from the bias level to the
start source current level. The output will then change in equal steps until the stop
current level is reached. The current output remains at the last point when the
sweep is done. The sweep delay parameter determines the time duration of each
sweep step. For linear staircase sweeps, the sweep delay period is the same for
all steps.
Figure 4-2
Linear staircase sweep
NOTE
Jitter – Step-to-step sweep timing may jitter as much as
1ms. This jitter can be eliminated by disabling the front
panel. For details, see
“Step-to-step timing jitter,” on
.
Delay
Delay
Delay
Delay
Start
Bias
Stop
Step
Step
Step
Sweep delay is the
same for each step.
0mA
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