home *** CD-ROM | disk | FTP | other *** search
- New Features added
- ------------------
-
-
- New Commands in AIM-Postprocessor
- =================================
-
- Preferences in the Format menu
- ------------------------------
- Lets you change preference values. This command displays a dialog box.
- Your preferences will be saved in AIMGPP.INI on exit if "Save settings on
- exit" is active. The values are restored the next time you load AIM-
- Postprocessor.
-
- Add FFT Plot in the Graph menu
- ------------------------------
- This command lets you create FFT (Fast Fourier Transform) graphs from the
- graph that was active when you chose the command. The command is useful for
- examining the spectrum of the output on non-linear circuits. A dialog box
- is displayed in response of this command.
- The drop down list box contains a list of all traces contained in the
- active graph. One of the traces is selected. The other two fields in the
- dialog box displays the number of data points in the selected trace and the
- suggested number of samples to use when transforming the trace.
- AIM-Postprocessor transforms each trace individually and creates two new
- graphs for each trace. One contains the amplitude of the original trace as a
- function of frequency, and the other contains the phase.
- When AIM-Postprocessor transforms a trace it creates a new set of
- datapoints where the number of points is equal to the number of samples you
- specified in the dialog box. The datapoints is equally spaced in the time
- interval. This is done with linear interpolation on the original datapoints.
- The new set of datapoints are then transformed.
- The resolution in frequency is the reciprocal of extent in time, and extent
- in frequency is proportional to the number of samples used. So, if you want
- higher resolution in the frequency domain you have to run the transient
- analysis for a longer time in AIM-Spice. Run the circuit for many cycles if
- necessary.
- One thing to mention at last is that AIM-Postprocessor transforms all
- traces, not only those that is a function of time. It's your responsibility to
- create meaningful transforms.
-
-
- New and Obsolete Commands in AIM-Spice
- ======================================
-
- Preferences in the Options menu (New Command)
- ---------------------------------------------
- Lets you change preference values. This command displays a dialog box.
- Your preferences will be saved in AIMSPICE.INI on exit if "Save settings on
- exit" is active. The values are restored the next time you load AIM-Spice.
-
-
- Auto Scale in the Format menu in Analysis Mode (New Command)
- ------------------------------------------------------------
- By choosing this command, you reset the y-axis limits to fit the simulated
- results. This command can also be used during a simulation to enlarge the
- y-axis if the simulated results goes beyond the y-axis intercval. This command
- can also be invoked with the Alt+U keycombination.
-
-
- Analysis Limits (Obsolete Command)
- ----------------------------------
- This command is deleted and this operation is now part of the command
- Select Variables to Plot.
-
-
-
- Evaluation Version Limitation
- -----------------------------
-
- This evaluation version of AIM-Spice is limited in various ways:
- - Maximum number of nodes in a circuit is 20
- - Maximum number of transistors in a circuit is 10
- - The C-V model described in section 3.12 in the book is not available