Keithley 4200A-SCS Reference Manual page 359

Section 6: Clarius
Speed
The 4200A-SCS is highly tuned to automatically take into account both settling time and noise issues.
It provides measurement speeds that allow you to select trade-offs between speed and noise. You
can select:
•
Fast: Optimizes the 4200A-SCS for speed at the expense of noise performance. It is a good
choice for measurements where noise and settling time are not concerns.
•
Normal: The default and most commonly used setting. It provides a good combination of speed
and low noise and is the best setting for most cases.
•
Quiet: Optimizes the 4200A-SCS for low-noise measurements at the expense of speed. If speed
is not a critical consideration, it is a good choice when you need the lowest noise and most
accurate measurements.
•
Custom: Allows you to fine tune the timing parameters. With Custom, you can configure the A/D
aperture time and individual delay and filtering factors to produce a composite setting that is
faster than the Fast setting, quieter than the Quiet setting, or anything in between.
Report Timestamps
When this option is selected, every measurement in the Analyze sheet includes a timestamp. When
this option is cleared, the timestamp is not included.
The timestamp records the elapsed time for each measurement. Each elapsed time value is placed in
the Analyze sheet in the same row as the measurement.
Each elapsed time is measured relative to the beginning of the test when voltage or current is first
applied to the device. If Clarius requires only one reading for each measurement, Clarius records the
timestamp at the beginning of this reading, as shown in the following figure.
Figure 259: Timestamps when Clarius requires only one reading for a measurement
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Model 4200A-SCS Parameter Analyzer Reference Manual
4200A-901-01 Rev. C / February 2017