Specifications

168 Chapter 7
Measurement Result Processing
Equivalent Circuit Analysis
Performing Equivalent Circuit Analysis
Use the following GPIB command to perform equivalent circuit analysis.
• CALC{1-5}:EPAR on page 295
NOTE Equivalent circuit analysis is performed within the range specified for marker search.
Use the following GPIB command in the query format to read equivalent circuit analysis
results (equivalent circuit parameters: R1, C1, L1, and C0).
• CALC{1-5}:EPAR on page 295
Simulating Frequency Characteristics
The E4991A allows you to simulate frequency characteristics based on the values of the
R1, C1, L1, and C0 parameters obtained from the equivalent circuit analysis and display
the results as a memory trace on the screen. Use the following GPIB command to simulate
frequency characteristics.
• CALC{1-5}:EPAR:SIM on page 297
The CALC{1-5}:EPAR command can be used to set the R1, C1, L1, and C1 parameters to
any value. Therefore, you can use this command to set these parameters to desired values
to simulate frequency characteristics and display the results on the screen.