Model 4200A-SCS Prober and External Instrument Control Section 5: Using a Keysight 4284/4980A LCR Meter
4200A-913-01 Rev. A December 2020 5-11
Cmeas4284 User Module
The Cmeas4284 routine measures capacitance and conductance using the Keysight Model 4284A or 4980 LCR
Meter.
Usage
status = Cmeas4284( char *InstIdStr, int LoPin, int HiPin, double SignalLevel, double
Frequency, double BiasV, double Range, int Model, int IntegrationTime, double *C,
double *V, double *G_or_R);
Returned values; see Details
The CMTR instrument ID; CMTR1 or CMTR2 (default), depending on your system
configuration
The DUT pin to which the Model 4284A or 4980 low terminal is attached (−1 to 72;
default 0); if a value of less than 1 is specified, no switch matrix connection is made;
see Details
The DUT pin to which the Model 4284A or 4980 high terminal is attached (−1 to 72;
default 0); if a value of less than 1 is specified, no switch matrix connection is made;
see Details
The oscillator output voltage level: 5 mV to 20 V; default 0.045 V
Measurement frequency of the sweep: 20 Hz to 1e6 Hz; default 100e3 Hz
The DC bias to use for the measurement: −40 V to +40 V; default 1.0 V
The measurement range to use (in ohms): 0 (Auto, the default), 100, 300, 1000,
3000, 10000, 30000, or 100000
Measurement model: Series or Parallel
The integration time to use:
â–ª Short: 0
â–ª Medium: 1 (default)
â–ª Long: 2
Output: The measured capacitance
Output: The bias voltage used
Output:
â–ª Parallel measurement model (G_or_R is the measured conductance): 1
â–ª Series measurement model (G_or_R is the measured resistance): 0
Details
This user module makes a single, fixed-bias capacitance and conductance measurement.
If a switch matrix to route signals is being controlled by a connection action UTM (for example,
connect), there is no need to connect LoPin and HiPin. Set these parameters to 0.
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