Keithley 4200A-SCS - CVU Frequency Sweep - DC Step

Section
4: Multi-frequency capacitance-voltage unit Model 4200A-SCS Parameter Analyzer
Reference Manual
4-30 4200A-901-01 Rev. C / February 2017
CVU frequency sweep - DC step
The following figure shows an example of the Advanced Terminal Settings dialog box for a test set to
Frequency Sweep - DC Step. The test is set to measure Cp-Gp.
Figure 111: CVU Freq Sweep - DC Step
When this test is run, the following source-measure sequence occurs:
1. The DC source goes to the presoak voltage of −1 V.
2. After the hold time, DC bias goes to 0 V.
3. After the system delay and the sweep delay, the 4210-CVU makes a measurement for the
100 kHz frequency point. The AC signal is applied before the start of the measurement.
4. After another system delay and sweep delay, a measurement is made for the 200 kHz frequency
point.
5. DC bias goes to 1 V.
6. Steps 3 and 4 are repeated.
7. DC bias goes to 2 V.
8. Steps 3 and 4 are repeated.
The sweep delay and hold time are set in the Test Settings pane for the test.