Tektronix Keithley 4200A-SCS User Manual

Section 6: Using a Model 82 C-V System Model 4200A-SCS Prober and External Instrument Control
6-32 4200A-913-01 Rev. A December 2020
Procedure
For each range and test frequency specified by the input parameters:
1. You are prompted to open the circuit so that an offset capacitance measurement can be made.
2. Once the offset capacitance measurement is completed, you are prompted to connect the low
value capacitor for the selected range. The system performs the low capacitor compensation.
3. You are prompted to connect the high value capacitor for the selected range. The system does
the high value capacitor compensation.
4. You are prompted to reconnect the low capacitor.
5. The nominal and measured values are displayed in a dialog box.
6. Verify the values. If you are unsatisfied with the measurement, select Cancel to abort the
procedure. If you select Cancel, the cable compensation file is not affected.
7. When all selected ranges and frequencies have been compensated successfully, the cable
compensation values are saved.
Also see
None
CtSweep82 user module
The CtSweep82 user module measures capacitance as a function of time at a certain bias.
Usage
status = CtSweep82(int Frequency, double Default_Bias, double Stress_Time, double
Test_Bias, double Sample_Time, int Reading_rate, int Num_Points, int Range590, int
Model590, int Filter590, char *CabComFile, int OffsetCorrect, char *instr_id, int
InputPin, int OutPin, double *CHF, int CHF_ArrSize, double *G_or_R, int
G_or_R_ArrSize, double *Time, int Time_ArrSize);
status
Returned values are placed in the Analyze sheet; see Details
Frequency
The measurement frequency:
▪ 100 kHz: 0
▪ 1 MHz: 1
Default_Bias
DC bias applied before and after a C-t sweep (−20 V to +20 V)
Stress_Time
Duration of the default bias before test bias is applied (0.001 s to 65 s)
Test_Bias
Voltage bias for capacitance measurements (−20 V to +20 V)
Sample_Time
Time delay between each sampling measurement (0.001 s to 65 s)
Reading_rate
The reading rate used to acquire the measurements (1 to 4; see Details)
Num_Points
Number of sampling points (1 to 1350)
Range590
The measurement range for the 590 (1 to 4; see Details for valid range values)
Model590
The measurement model to use for high frequency measurement:
▪ Parallel mode: 0
▪ Series model: 1

Tektronix Keithley 4200A-SCS Specifications

General

Brand	Tektronix
Model	Keithley 4200A-SCS
Category	Measuring Instruments
Language	English