Using AvanWaves

The following example demonstrates how to use AvanWaves to analyze the results of an Star-Hspice DC analysis for a MOS device, displaying a family of I vs. V curves. The example uses the design mosiv.sp, in the $installdir/demo/awaves/tutorial/dc directory.

Opening the Design

To open the mosiv.sp design:

1. In the Results Display window, select the Design >> Open command, using the right mouse button.

2. In the Open text area, enter the following design file path name:

		$installdir/awaves/tutorial/dc/mosiv.sp

3. Click on OK with the left mouse button.

Figure 2-1: The Results Browser

Selecting the Analysis Files

The analysis is set up by selecting an analysis file and an analysis type, as follows:

1. In the Results Browser, select the DC analysis, A0 .

2. In the Types scroll box, select the analysis data type Currents .

Displaying a Waveform

Waveforms are displayed in the Results Display window. One panel is opened by default on opening this window. To display the waveform associated with the curve i(mvg2 , do the following:

• In the Curves section of the Results Browser, select the curve i(mvg2 with the left mouse button. Then use the middle mouse button to drag and drop it into the panel in the Results Display window.

• As an alternative way of displaying the waveform:

1. With the left mouse button, click on the panel you want to display the curve in.

2. In the Results Browser, double-click with the left mouse button on the name of the curve to be displayed.

Figure 2-2: i(mvg2 curve Displayed in the Results Display window

Adding a New Panel

A number of panels can be opened in the Results Display window at the same time, which provides a way to do comparisons. To add a new panel to the Results Display window, select Add from the Panels pulldown menu. A new panel is added to the Display area, as shown in Results Display Window with Addition of New Panel. Panels are automatically named as they are added.

Figure 2-3: Results Display Window with Addition of New Panel

The number of panels displayed in the Results Display Window is only limited by the size of the Results Display window. If the window size is too small, the following message is displayed when you select Add from the Panels pulldown menu.

				Not enough room to display new panel. Added as hidden 
				panel.

The panel is added to the Panel List within the Panels pulldown menu as a hidden panel. To display the panel, increase the size of the Results Display window, then double-click on the hidden panel.

Displaying a Second Waveform

To display a second waveform in the new panel:

1. Click the L mouse button in the new panel to select it.

2. In the Results Browser, select the DC analysis A1 .

3. In the Types section, select the analysis data type Currents.

4. In the Curves section of the Results Browser, select i(mvg2 using the L mouse button, then double click the L mouse button to produce the curve in the selected display panel, as shown in Two curves displayed in two panels. Alternatively, you can drag the selected curve into the panel in the Results Display window using:

To delete a waveform in a panel, select the waveform in the wave list and press Del .

Figure 2-4: Two curves displayed in two panels

Repeat steps 1 through 3 to display the curve i(mvg2 for the other analyses A3 to A5. Now you can compare the waveforms produced by the different types of analysis.

Summary

This example described how to open a design, select analysis files to evaluate, add panels, then display waveforms. These are the basic functions provided by AvanWaves.