Cmeas590 User Module - Keithley 4200A-SCS Reference Manual

Appendix B: Using a Model 590 C-V Analyzer
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. When the offset capacitance measurement is completed, you are prompted to connect the low
value capacitor for the selected range. The system does the low value 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. You can:

Select Cancel to abort the procedure if the results are not correct. No changes to the cable
compensation file occur.

Select Save to save the cable compensation values.
Also see
None

Cmeas590 user module

The Cmeas590 routine measures capacitance and conductance using the Keithley Instruments 590 C-V Analyzer.
You can make an offset correction measurement and use cable compensation.
Usage
status = Cmeas590(char *CabCompFile, char *InstIdStr, int InputPin, int OutPin, int
OffsetCorrect, int Frequency, double DefaultBias, double StartTime, double
Range, int Model, int Filter, int ReadingRate, double *C, double *V, double
*G_or_R);
status
CabCompFile
InstIdStr
InputPin
OutPin
OffsetCorrect
Frequency
DefaultBias
StartTime
Range
Model
B-14
Returned values; see Details
The complete name and path for the cable compensation file; see Details
The CMTR instrument ID; CMTR1, CMTR2, CMTR3, or CMTR4, depending on your
system configuration
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
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
Determines if an offset correction measurement should be made:
•
Do not make offset measurement: 0
•
Make offset measurement: 1
The measurement frequency to use:
•
100 kHz: 0
•
1 MHz: 1
The DC bias to use for the measurement: −20 to +20 V
The amount of time to delay after applying the DefaultBias voltage step
(0.001 s to 65 s)
The measurement range to use: 1 to 4; see Details
Measurement model:
•
Series model: 0
•
Parallel model: 1
Model 4200A-SCS Parameter Analyzer Reference Manual
4200A-901-01 Rev. C / February 2017