eldo_user

Setting Up An Analysis
Pole Zero Analysis
Procedure
1. Run an AC analysis simulation using a netlist with both .AC and .PZ commands. If the
simulation is successful, a pole-zero data file with extension .pz will be generated.
2. Use the pole-zero post-processor to obtain the poles and zeros for the design under test.
The pz command specified with the .pz file as argument begins the dialog for pole-zero
analysis. Run the command:
pz circuit.pz
A list of poles and zeros will be generated and you will be prompted to refine the
solution by removing less important poles and zeros.
Related Topics
Tip
See “.AC” and “.PZ” in the Eldo Reference Manual.
Running Pole-Zero Analysis in Batch Mode
Running Pole-Zero Analysis in Interactive Mode
Pole-Zero Analysis Output
Running Pole-Zero Analysis in Batch Mode
In batch mode, the pole-zero analysis runs without user interaction. Where the interactive mode
would prompt for user input, the batch tool uses default responses.
Prerequisites
An AC analysis must have been run on the circuit of interest, and that analysis must have
included a .PZ command (to generate a .pz file in the output directory.
Procedure
1. Navigate to the directory containing the output .pz file from the AC analysis.
2. Run:
pz .pz -batch
The pole-zero post-processor runs until completion.
Related Topics
Tip
See “.PZ” in the Eldo Reference Manual.
Running Pole-Zero Analysis in Interactive Mode
Eldo® User's Manual, 15.3 231