Keithley 4200-SCS - Setting the DC Bias Conditions; Setting the AC Drive Conditions; Measure Settings

4200-900-01 Rev. K / February 2017 Return to Section Topics 3-17
Model 4200-SCS User’s Manual Section 3: Common Device Characterization Tests
Setting the DC bias conditions
The DC bias conditions depend on which forcing function is presently selected. As
shown in Figure 3-12, settings include pre-soak voltage, DC bias, start voltage,
stop voltage, step voltage, number of data points and volts values. Table 3-1 lists
the DC bias conditions (and setting range) for each forcing function.
Setting the AC drive conditions
As shown in Figure 3-12, the AC drive conditions include frequency (Hz) and
voltage (mV RMS), and are summarized in Table 3-1. Frequency can be set to the
following values:
• 1 kHz through 10 kHz in 1 kHz steps
• 10 kHz to 90 kHz in 10 kHz steps
• 100 kHz to 900 kHz in 100 kHz steps
• 1 MHz to 10 MHz in 1 MHz steps
When performing a frequency sweep, the 4210-CVU steps through all the
frequency points from start to stop. For example, if the start frequency is 800 kHz
and the stop frequency is 3 MHz, the CVU will step through the following
frequency points: 800 kHz, 900 kHz, 1 MHz, 2 MHz, 3 MHz.
Measure settings
Referring to the Measure Settings area indicated in Figure 3-12, use the drop-
down menu for Parameters to select one of the following measurement options:
• Z, Theta Impedance and phase angle (degrees)
• R+jX Resistance and reactance
• Cp-Gp Parallel capacitance and conductance
• Cs-Rs Series capacitance and resistance
• Cp-D Parallel capacitance and dissipation factor
• Cs-D Series capacitance and dissipation factor
CVU voltage list sweep Sweeping Data Points 1 to 4096 frequency 1 kHz to 10 MHz Figure 3-19
Volts
values,
PreSoak
-30 V to 30 V voltage 10 mV to 100 mV
CVU frequency sweep (bias) Sweeping PreSoak,
DC bias
-30 V to 30 V start, stop
frequency
1 kHz to 10 MHz Figure 3-21
voltage 10 mV to 100 mV
CVU frequency sweep (step) Sweeping PreSoak,
Start, Stop,
Step
-30 V to 30 V start, stop
frequency
1 kHz to 10 MHz Figure 3-23
voltage 10 mV to 100 mV
* The CVU voltage sweep can be configured to perform a dual sweep (see CVU Voltage Sweep).
** 4200-CVU lowest frequency is 10 kHz. 4210-CVU lowest frequency is 1 kHz.
Table 3-1
Forcing functions: DC bias settings and AC drive settings (continued)
Forcing Function Test mode DC bias condition AC drive condition **
FFMO window
example