Tektronix Keithley 4200A-SCS - Page 89

Model 4200A-SCS Prober and External Instrument Control Section 4: Using a Model 590 C-V Analyzer
4200A-913-01 Rev. A December 2020 4-27
Filter
Enable or disable the analog filter, which can minimize the amount of noise that
appears in the readings; however, it increases the measurement time:
▪ Disable the filter: 0
▪ Enable the filter: 1
ReadingRate
Selects the reading rate used to acquire the measurements: 0 to 4; see Details
C
Output: The measured array of capacitance values
Csize
Set to a value equal to or greater than the number of voltage steps in the sweep or
equal to ((LastBias − FirstBias) / StepV) + 1
V
Output: The array of bias voltages used
Vsize
Set to a value equal to or greater than the number of voltage steps in the sweep or
equal to ((LastBias − FirstBias) / StepV) + 1
G_or_R
Output:
▪ When the parallel measurement model (0) is selected, G_or_R is the
measured conductance
▪ When the series measurement model (1) is selected, this is the measured
resistance
G_or_Rsize
When this function is called from a Clarius UTM, this parameter is fixed at 1350
T
The array of time stamps for each measurement step
Tsize
When this function is called from a Clarius UTM, this parameter is fixed at 1350
Details
This user module performs a capacitance versus voltage staircase sweep. The figure below shows
the default parameters for the 590-cvsweep UTM, which uses the CvSweep590 user module.
Figure 66: CvSweep590 user module (590-cvsweep UTM)