Cadence® system design and verification solutions, integrated under our System Development Suite, provide the simulation, acceleration, emulation, and management capabilities.
System Development Suite Related Products A-Z
Cadence® digital design and signoff solutions provide a fast path to design closure and better predictability, helping you meet your power, performance, and area (PPA) targets.
Full-Flow Digital Solution Related Products A-Z
Cadence® custom, analog, and RF design solutions can help you save time by automating many routine tasks, from block-level and mixed-signal simulation to routing and library characterization.
Overview Related Products A-Z
Driving efficiency and accuracy in advanced packaging, system planning, and multi-fabric interoperability, Cadence® package implementation products deliver the automation and accuracy.
Cadence® PCB design solutions enable shorter, more predictable design cycles with greater integration of component design and system-level simulation for a constraint-driven flow.
An open IP platform for you to customize your app-driven SoC design.
Comprehensive solutions and methodologies.
Helping you meet your broader business goals.
A global customer support infrastructure with around-the-clock help.
24/7 Support - Cadence Online Support
Locate the latest software updates, service request, technical documentation, solutions and more in your personalized environment.
Cadence offers various software services for download. This page describes our offerings, including the Allegro FREE Physical Viewer.
Get the most out of your investment in Cadence technologies through a wide range of training offerings.
This course combines our Allegro PCB Editor Basic Techniques, followed by Allegro PCB Editor Intermediate Techniques.
Virtuoso Analog Design Environment Verifier 16.7
Learn learn to perform requirements-driven analog verification using the Virtuoso ADE Verifier tool.
Exchange ideas, news, technical information, and best practices.
The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information.
It's not all about the technlogy. Here we exchange ideas on the Cadence Academic Network and other subjects of general interest.
Cadence is a leading provider of system design tools, software, IP, and services.
Giving up on the formal tutorial I mentioned in my other post, I created a simple little circuit with two meshes. The kind we all did in entry level classes. My goal is to use the ability to generate PSpice files. I have used the older public version 8 of PSpice.
When I ask OrCAD to generate a file, it doesn't include the .PRINT command, so the output doesn't display any of the basic values I am after (node voltages, currents, etc). I could edit the file manually, and feed it to the previous PSpice version, but that's not what I expect I need to do. I expect that this should all be integrated with the PSpice that ver 16 DEMO installed.
How/where is the .PRINT command controlled in OrCAD? I can't find anything which will insert it in any of the dialogs.
In Capture there are bias points you can enable, and voltage, current and power markers that you can add. Otherwise, when the simulation ends, use trace>add trace to get the waveforms in the probe window. (Menu for Markers, PSpice>Markers, pick marker, for Bias Points, PSpice>Bias Points, enable the Bias Point display, bias points are displayed in the schematic - or use the toolbar icons)
In reply to oldmouldy:
oldmouldy In Capture there are bias points you can enable, and voltage, current and power markers that you can add. Otherwise, when the simulation ends, use trace>add trace to get the waveforms in the probe window. (Menu for Markers, PSpice>Markers, pick marker, for Bias Points, PSpice>Bias Points, enable the Bias Point display, bias points are displayed in the schematic - or use the toolbar icons)
Yes, I can use add a trace, but I was saving that for my next question (Steady state DC doesn't need a time trace, and it is giving a trace of voltage vs voltage, which I'm not clear as to what it's trying to show me).
Since this is just a simple steady state circuit, I am trying to get the node data in the output file from the .PRINT command, like this: Is V(Ra) V(Rb) V(Rc) V(2) V(3) 4.000E+00 1.200E+02 1.000E+02 5.000E+02 5.000E+02 7.200E+02I can't place a cursor on the graph to see the exact value because it complains there is no valid trace.
This is what I am trying to figure out.
In reply to scotty2541:
The Probe WIndow won't display anything for the Bias simulation since this is a simple steady state with nothing changing. View the Output File, this will list the node voltages at the start of the simulation, actually the end for a Bias Simulation. In Capture, you can also turn on the Bias Markers and have the initial steady state values displayed on the schematic.
Thanks for your response. However, that's not getting me any closer.
I *really* wish there was a better tutorial...
I have been examining the *.out file, the node values aren't in it, because the *.cir and/or *.net files don't have a .PRINT command.I did manage to decypher the structure that was being used (profile file name is the *.cir file, which includes the *.net files for each drawing). Aparently, the 'Analysis Directives' section of the *.cir file is where the .PRINT command should be placed, I just can't figure out how to get the Capture program to place it there. All the files have big statements that say ** Creating circuit file "Test.cir" ** WARNING: THIS AUTOMATICALLY GENERATED FILE MAY BE OVERWRITTEN BY SUBSEQUENT SIMULATIONSSo, I can't put the .PRINT command in manually.
Since I can't see how to attach a file, here is a paste of the *.out file. There are no node voltages in it. Remember, this is a tiny little two mesh loop, just to try to learn the suite, not solve some hugh complex problem.
Thanks for your continued help.
----------------------------------PASTE--------------------------------------------------------**** 01/16/09 09:40:16 ******* PSpice Lite (August 2007) ****** ID# 10813 ****
** Profile: "Mesh1-Test" [ C:\Demo\Meshes\mesh-pspicefiles\mesh1\test.sim ]
**** CIRCUIT DESCRIPTION
** Creating circuit file "Test.cir" ** WARNING: THIS AUTOMATICALLY GENERATED FILE MAY BE OVERWRITTEN BY SUBSEQUENT SIMULATIONS
*Libraries: * Profile Libraries :* Local Libraries :* From [PSPICE NETLIST] section of C:\OrCAD\OrCAD_16.0_Demo\tools\PSpice\PSpice.ini file:.lib "nom.lib"
*Analysis directives: .DC LIN V_V1 12 12 1 .PROBE V(alias(*)) I(alias(*)) W(alias(*)) D(alias(*)) NOISE(alias(*)) .INC "..\Mesh1.net"
**** INCLUDING Mesh1.net ***** source MESHR_R1 N00223 N00196 5k R_R2 N00196 N00187 500 R_R3 0 N00196 1k V_V1 N00223 0 12VdcI_I2 0 N00187 DC 15mAdc
**** RESUMING Test.cir ****.END
JOB CONCLUDED**** 01/16/09 09:40:16 ******* PSpice Lite (August 2007) ****** ID# 10813 ****
**** JOB STATISTICS SUMMARY
Total job time (using Solver 1) = 0.00
Check the Simulation Profile, PSpice>Edit Simulation Profile, on the Analysis tab, you cleared the default flag to "include detailed bias point information for nonlinear controlled sources and semiconductors (.OP)", this does not affect the output file but it does indicate that the simulation profile has been changed and the reason that you are not getting any bias values in the output file. On the Options tab, change the category to "Output File" and check the box to include "Bias Point Node voltages" in the output file, the Bias Points will then be listed in the output file. The fact still remains that the display of bias points can be enabled in the schematic.
Yes. That did it. Thanks.
The values are showing up in the *.out file. And the bias 'pins' on the schematic have results too. (Bias Point Node Voltages was already turned on, I guess the change to the profile was what was needed).