Keithley 4200A-SCS

Model 4200A
-SCS Parameter Analyzer Reference Manual Appendix B: Using a Model 590 C-
V Analyzer
4200A-901-01 Rev. C / February 2017 B-27
CvSweep590 user module
The CvSweep590 routine does a capacitance versus voltage (C-V) sweep using the Keithley Instruments 590 C-V
Analyzer. You can make an offset correction measurement and use cable compensation.
Usage
status = CvSweep590(char *CabCompFile, char *InstIdStr, int InputPin, int OutPin,
int OffsetCorrect, int Waveform, double FirstBias, double LastBias, double
StepV, int Frequency, double DefaultBias, double StartTime, double StepTime,
double Range, int Model, int Filter, int ReadingRate, double *C, int Csize,
double *V, int Vsize, double *G_or_R, int G_or_Rsize, double *T, int Tsize);
status
Returned values; see
Details
CabCompFile
The complete name and path for the cable compensation file; see Details
InstIdStr
The CMTR instrument ID; CMTR1, CMTR2, CMTR3, or CMTR4, depending on your
system configuration
InputPin
The DUT pin to which the 590 input terminal is attached (−1 to 72); if a value of less
than 1 is specified, no switch matrix connection is made; see Details
OutPin
The DUT pin to which the 590 output terminal is attached (−1 to 72); if a value of
less than 1 is specified, no switch matrix connection is made; see Details
OffsetCorrect
Determines if an offset correction measurement should be made:
• Do not make offset measurement: 0
• Make offset measurement:
1
Waveform
Selects either the single staircase or dual staircase waveform:
• Single: 1
• Dual:
2
FirstBias
The starting voltage for the sweep: −20 V to +20 V
LastBias
The last voltage used in the sweep: −20 V to +20 V
StepV
The voltage step size: −20 V to +20 V; the value of
((LastBias − FirstBias) / StepV) + 1 must be less than or equal to the Csize,
Vsize, G_or_Rsize, and Tsize parameters
Frequency
The measurement frequency to use:
• 100 kHz: 0
• 1 MHz:
1
DefaultBias
The DC bias that is applied before and after a sweep:
−
20 V to +20 V
StartTime
The time that occurs on the first bias step, from the point the instrument is first
triggered until the first step time: 0.001 s to 65 s
StepTime
The time period after a transition to a new bias step and before the instrument
begins a measurement: 0.001 s to 65 s
Range
The measurement range to use in F: 2E-12, 20E-12, 200E-12, or 2E-9; see Details
Model
Measurement model:
• Series model: 0
• Parallel model: 1
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