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- 1.0) Introduction
-
- This file describes how to setup and run the evaluation versions of
- PSpice and Probe.
-
- PSpice is an analog circuit simulator. It calculates the voltages
- and currents of a circuit under a variety of different circumstances,
- such as DC, AC, and in time. The program SPICE was developed at the
- University of California at Berkeley in the early 1970's and has
- become a de facto standard in the area of analog simulation. The
- input and output of PSpice conform to that standard. Also, PSpice
- has many extensions which give it a wide applicability.
-
- Probe is a waveform viewer. It displays the results from PSpice
- graphically and interactively. If you think of PSpice as a
- "software breadboard", then think of Probe as a "software oscilloscope".
-
- Also included in this package is the Monte Carlo analysis option
- for PSpice. Monte Carlo analysis allows tolerances to be assigned
- to component values and used in repeated simulations. This option
- is built into the evaluation version of the PSpice program.
-
- 2.0) System Configuration
-
- PSpice will run on the IBM PC and PS/2 families of computers,
- including machines based on the 8088, 8086, 80286, and 80386. PSpice
- needs 512kbytes of memory (RAM). Either the monochrome or color
- display may be used. Any printer may be used. For this evaluation
- version of PSpice the floating-point processor (8087, 80287, or 80387)
- is optional. If present the program will run at full speed. Otherwise
- it will run 5-15 times slower. The production version requires the
- co-processor; it is not optional.
-
- PSpice runs under MSDOS 2.0+ and requires the system to have been
- booted with a CONFIG.SYS file which contains the statement:
-
- FILES=30
-
- It is also recommended that the CONFIG.SYS file contain the statement:
-
- BUFFERS=20
-
- Such a CONFIG.SYS file is included on Diskette 1. If the CONFIG.SYS
- in your root directory does not have these two statements, include
- them, and reboot your system.
-
- 3.0) Running PSpice
-
- For systems with a fixed disk, simply copy the all the files
- from this diskette into a directory and then start PSpice with
- the command:
-
- PSPICE input-file output-file
-
- The input-file and output-file may have pathnames.
- The program files (PSPICE1.EXE and PROBE.EXE) can be on any directory
- specified by a previous DOS PATH command.
-
- The input file must be specified, but its extension need not be. Its
- extension defaults to .CIR. The output file is optional, its name
- defaults to the input file's name and its extension defaults to .OUT.
- This command will run EXAMPLE1.CIR and put the results into a file
- named EXAMPLE1.OUT:
-
- PSPICE EXAMPLE1
-
- If the input file is not specified you will be prompted for it. The
- output file may be a device, such as the printer. This command would
- run EXAMPLE1 to the printer:
-
- PSPICE EXAMPLE1 PRN
-
- assuming that you have the standard DOS reserved names.
-
- You may also run PSpice and Probe directly from a floppy disk, although
- we recommend against it due to limited disk space.
-
- 4.0) Format of the Input and Output Files
-
- The input and output files are ordinary text files and follow the
- same rules as those for the UC Berkeley SPICE program, version 2G.6,
- with these omissions:
-
- 1) There is no distortion (.DISTO) analysis. We recommend using the
- .TRAN and .FOUR to calculate harmonic distortion. This method
- correctly accounts for clipping, which .DISTO does not.
- 2) There is no .ALTER command.
-
- In addition, numerous enhancements to the Berkeley SPICE have been
- added including GaAs MESFET devices, Monte Carlo analysis, ideal
- switches, non-linear transformers, and standard parts libraries.
- For more details on these and other PSpice enhancements, the PSpice
- User's Guide may be purchased separately from the PSpice program.
-
- 5.0) Restrictions for the evaluation version
-
- This evalution version of PSpice will run in 512kbytes. It will run with
- or without the floating-point co-processor. All the features of the
- production PSpice as of June 1987 are included except that the circuit
- size is restricted to a maximum of about 10 transistors. Note that
- for schools teaching introductory electronics courses, 10 transistors
- may be all that is needed. The production version of PSpice comes
- with a library of models for over 2000 standard devices (diodes, bipolar
- transistors such as the 2N2222, power MOSFET's, opamps, comparators,
- and transformer cores). The evaluation version includes a reduced version
- of this library with about 10 parts. The libraries are in the files with
- extension ".LIB". These are ascii, text files and we
- recommend that you print them out for more information on them.
- Also included are the subcircuits for modeling the OpAmps from
- Linear Technology Corporation.
-
- 6.0) Running Probe
-
- These diskettes also contain Probe, the graphics post-processor for
- PSpice. Probe is run by adding the statement:
-
- .PROBE
-
- to the input file to PSpice. Then, PSpice stores all the node voltages
- and device currents calculated during the simulation into a file called
- PROBE.DAT. The presence of the PROBE.DAT file will cause Probe to be
- run automatically as soon as PSpice is finished. In addition, once
- the PROBE.DAT file is created, Probe can be run by itself (that is,
- without re-running PSpice) by typing
-
- PROBE
-
- To run Probe the first time, we recommend adding a ".PROBE" statement
- to EXAMPLE1.CIR with a text editor and then typing:
-
- PSPICE EXAMPLE1
-
- PSpice will simulate EXAMPLE1 and create a PROBE.DAT file. After
- PSpice is finished Probe will start up automatically. (Refer to
- PSPICE.BAT)
-
- Probe accepts commands through a menu displayed at the bottom of the
- screen. Most of these commands are self-explanatory. To put up a
- waveform, use the Add Trace command. When it asks for a variable
- or expression, enter a voltage or current in the same format as
- for a .PRINT or .PLOT statement in PSpice. For instance,
-
- V(4,5) will show the voltage across nodes 4 and 5
- IC(Q1) will show the collector current at transistor Q1
-
- The Add Trace command also allows you to enter arithmetic expressions
- of voltages and currents. For instance,
-
- V(4)-V(5) will show the same waveform as V(4,5)
- V(4,5)*I(CLOAD) will show the instantaneous power through CLOAD
-
- The PROBE.DEV file contains a list of the devices attached to your
- system. The allowed devices for "Display = " are:
-
- Text: Non-graphics display
- IBM: IBM CGA (640x200 no color) adaptor
- IBMEGA: IBM EGA (640x350 with color) adaptor
- GenericEGA: non-IBM EGA (640x350 with color) adaptor
- Hercules: Hercules graphics (720x348 no color) adaptor
- AT&T: AT&T 6300 (640x350 no color) adaptor
- FutureNet: DASH2 graphics (640x350 no color) adaptor
-
- The allowed devices for "Hard-copy = " are:
-
- Text: Non-graphics printer
- Text132: Non-graphics printer (132 columns)
- Epson: Epson FX-80 printer
- Epson132: Epson FX-100 printer
- EpsonMX: Epson RX and MX-80, Okidata IBM Compatible, Okidata
- with Plug N' Play, and Epson-compatible printers
- EpsonMX132: Epson RX and MX-100 printers
- Okidata: Okidata ML92 printer
- Okidata132: Okidata ML93 printer
- Toshiba: Toshiba P351 in 180 dots/inch mode
- Toshiba132: Toshiba P351 (132 columns)
- Printronix: Printronix P300 and P600 printers (80 columns)
- Printronix132:Printronix printers (132 columns)
- IBMClr: IBM color printer (black only)
- IBMClr132: IBM color printer (black only, 132 columns)
- IBMClrSlw: IBM color printer (color)
- IBMClrSlw132: IBM color printer (color, 132 columns)
- CItoh: C. Itoh color printer (black only)
- CItoh132: C. Itoh color printer (black only, 132 columns)
- CItohSlw: C. Itoh color printer (color)
- CItohSlw132: C. Itoh color printer (color, 132 columns)
- HP Hewlett Packard 7400 and 7500 family of plotters (2 pens)
- HP6 Hewlett Packard 7400 and 7500 family of plotters (6 pens)
- HI Houston Instruments DMP pen plotter
- HPLJ Hewlett Packard LaserJet printer
-
- We recommend that you use "Text" first before trying out your system's
- graphic devices. Note: this evaluation version of Probe is for IBM and
- IBM-compatible PC's only. It will not run on the Texas Instruments
- professional.
-
- This evaluation version of Probe will run with or without the floating-
- point co-processor. It draws traces from 5 to 10 times slower without
- the co-processor. This evaluation Probe has all the capabilities of the
- production Probe as of June 1987. The production Probe requires the
- co-processor; it is not optional.
-
- 7.0) How good are the models in PSpice?
-
- The semiconductor models in PSpice account for a variety of static and
- dynamic effects. Many things are not modelled, for example the result
- of a burst of ionizing radiation (from a nuclear explosion). The
- models are designed to account for the important effects, in normal
- circuit operation. And, while a given model parameter set will not
- precisely match a given "real" device, the match will be closer than
- the difference between two "real" devices (selected at random).
-
-