Model 4200A-SCS Parameter Analyzer Reference Manual
Section 4: Multi-frequency capacitance-voltage unit
4200A-901-01 Rev. C / February 2017
4-25
Timing diagrams
The following topics describe typical test setups with the related timing diagrams.
CVU using voltage bias
For this test, make the following test settings:
•
Speed: Normal
•
Report Timestamps selected
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Mode: Sampling
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Interval: 0.25 s
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Number of Samples: 10
•
Hold Time: 1 s
Make the following Terminal Settings for CVH1:
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Operation Mode: Voltage Bias
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Presoak: 5 V
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DC Bias: 1 V
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Frequency: 100 kHz
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Parameters: Cp-Gp
•
Compensation as needed.
When this test is run, the following force-measure sequence occurs:
1. The DC source goes to the Presoak voltage of 5 V for the hold time (1 s).
2. The DC source goes to the DC bias voltage of 1 V.
3. After the built-in system delay and interval (0.25 s), the 4210-CVU makes a measurement. The
AC test signal is applied just before the start of the measurement. AC drive is turned off after the
measurement is completed. This step is repeated for every sample.
Figure 104: CVU Voltage Bias output
