Model 4200A-SCS Parameter Analyzer Reference Manual
Section 6: Clarius
4200A-901-01 Rev. C / February 2017
6-53
Frequency Sweep - DC Step operation mode - CVU
When the 4210-CVU does a frequency sweep with DC Step operation mode selected, the 4210-CVU
sweeps through all the frequency points from start to stop for each DC step.
Figure 238: Frequency Sweep - DC Step operation mode
For example, if the:
•
Start frequency is 800 kHz
•
Stop frequency is 3 MHz
•
DC start value is -1
•
Stop value is 1
•
Step value is 0.5
The CVU sweeps through the frequency points 800 kHz, 900 kHz, 1 MHz, 2 MHz, and 3 MHz for DC
biases -1 V, -0.5 V, 0 V, 0.5 V, and 1 V.
When this test is run, the following sequence occurs:
1. The DC source goes to the Presoak voltage.
2. After the hold time (set in the Test Settings), DC bias goes to the Start voltage.
3. After the delays, the 4210-CVU makes a measurement for the Start Frequency point. The AC
signal is applied before the start of the measurement.
4. The 4210-CVU sweeps through the frequency points until it reaches the Stop Frequency point.
5. DC bias goes to the next voltage as defined by the Step value.
6. Steps 4 and 5 are repeated until the DC bias reaches the Stop value.
