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AMS & Pspice guidance

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 Does anyone have a simple way to explain the use of pspice simulation?

From what I gathered so far it goes like this:  Orcad Capture CIS --> associate pspice models with symbols ----> export netlist into Allegro (XL)? --> layout brd ---> run AMS???

Also, is there a way to export the wave forms from the simulator?

Never done this before, but..........


At Allegro constraint manager nets are not enabled?

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After the component placement, when i try to put routing, on constraint manager the nets are been not get enabled. Default the 24V net is get enabled on all the all parameters. I had tried to set the constraint modes in the PCB editor at setup----->constraints------> modes.But still facing the problem. But me need to set the different values for different nets. Thanks & Regards Dhamodharan.

REG:DATABASE BUILD IN ORCAD & ALLEGRO

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Hello Friends

 

I would like to build a  closely integrated Database for schematic symbol & footprint in  orcad & allegro platform ..

 

So that  the design Engineer when doing the schematic  just call the part from the database & use it in the design  no need enter any attributes

 

Something like

·        Single window solution for managing the component library database

·        Option to integrate the schematic symbol, footprint and related attributes (MF part number, value etc) into one single identifier number (unique part number) which can be re used / re called in other design.

·        Visualization of part (symbol and Footprint) graphics

·        How to do version& revision control

 

If anybody has build the database based on this concept  please provide your tips that will  bereally helpful for me & I will thankful to you

 

Best Regards

Girish Kumar

 

Standard way to report/calculate leftover space on the board?

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I don't have much faith in this method personally, but I'm facing the expectation that we report the space occupied by parts relative to the overall size of the board.

It's great that I can query the placement void and get the area in mm2, is there a whole-board report to allow me to avoid bringing Excel into this...

 

Change NetName

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I want to change/replace the NetName in the capture design through TCL Script. So far i've been able to change the PinNames of any particular part and the names of OffPageConnectors of whole pages. I am getting the PinName and its corresponding NetName through $lPin. What I actually want to do is to add the PinName to its corresponding NetName with an underscore "_" between them. The Net Name is not being changed but if I try to change/replace the PinName which include the (NetName_PinName) it just works fine.

 

Please give me respective suggestions.

extracta CONNECTIVITY takes over 1.5 hours

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Hello, 

If I run the following command:

e:\Cadence\SPB_16.6\tools\pcb\bin\extracta extracta -c -m "foo.mcm" extracta_control.txt output/conn.txt 

With the following as extracta_control.txt:

CONNECTIVITY

NODE_1_NUMBER

END

It takes about 90 minutes to complete.

Is there anyway to speed this process up?

Is it possible to split the connectivity across multiple processes?  E.g. can I first query the total number of connectivity entries and then run one extracta for the first half and another for the second half to speed up the runtime by a factor of 2?

Any assistance would be greatly appreciated -- thank you! 

Best of Free PCB Design Software

Autoroute problem

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Hello everybody,
I have designed a schematic in OrCAD Capture CIS and then created netlist. And then I am able to open the file in OrCAD Layout Plus. But on selecting Autoroute Spectra-->Launch Spectra, I get the series of messages
1.) Too many parameters were specified on command line.
2.) Layout to SPECCTRA   Version 16.0.0
    Copyright 1985-2006 Cadence Design Systems, Inc.

    ERROR (Layout to SPECCTRA), Unexpected DB Version found
    Translate time 0 seconds
3.) The problem preventing translation of your file into DSN format must be corrected before the SPECTRA router can be used.

Please help me solve this issue.
Thanks in advance.

Regards,
Anay
 


Net list error during orcad capture simulation

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Please guide to solve below problem.

I have done many simulation. this is sudden problem.

Session log description

INFO(ORCAP-2191): Creating PSpice Netlist
INFO(ORNET-1041): Writing PSpice Flat Netlist D:\MY DOCUMENTS\hello6-PSpiceFiles\SCHEMATIC1\SCHEMATIC1.net
INFO(ORNET-1169): Unable to open the property mapping file: devparam.txt. To resolve this problem, ensure that PSpice.ini exists at the correct location. After that check Library Path in simulation settings contains <installation-path>/tools/pspice/library path and then create the netlist again.
INFO(ORNET-1162): Unable to create design property file

how to make Pspice model with the txt file.

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Hi, i need to make a Pspice part for simulation. the Maker company only gives this data.  its IRFL9014 Mosfet p channel from vishay.com

------------------------------------------------

*Jun 01, 2010 *Doc. ID: 90412, Rev. A *File Name: part irfl9014_PS.txt and part irfl9014_PS.spi *This document is intended as a SPICE modeling guideline and does not *constitute a commercial product data sheet. Designers should refer to the *appropriate data sheet of the same number for guaranteed specification *limits. .SUBCKT irfl9014 1 2 3 ************************************** * Model Generated by MODPEX * *Copyright(c) Symmetry Design Systems* * All Rights Reserved * * UNPUBLISHED LICENSED SOFTWARE * * Contains Proprietary Information * * Which is The Property of * * SYMMETRY OR ITS LICENSORS * *Commercial Use or Resale Restricted * * by Symmetry License Agreement * ************************************** * Model generated on Oct 22, 96 * MODEL FORMAT: SPICE3 * Symmetry POWER MOS Model (Version 1.0) * External Node Designations * Node 1 -> Drain * Node 2 -> Gate * Node 3 -> Source M1 9 7 8 8 MM L=100u W=100u * Default values used in MM: * The voltage-dependent capacitances are * not included. Other default values are: * RS=0 RD=0 LD=0 CBD=0 CBS=0 CGBO=0 .MODEL MM PMOS LEVEL=1 IS=1e-32 +VTO=-3.87971 LAMBDA=0.0503704 KP=0.713612 +CGSO=2.47152e-06 CGDO=1e-11 RS 8 3 0.116837 D1 1 3 MD .MODEL MD D IS=5e-21 RS=0.15039 N=1.5 BV=60 +IBV=10 EG=1.2 XTI=4 TT=1e-07 +CJO=4.40194e-10 VJ=1.63887 M=0.440757 FC=0.5 RDS 3 1 600000 RD 9 1 0.0001 RG 2 7 9.4415 D2 5 4 MD1 * Default values used in MD1: * RS=0 EG=1.11 XTI=3.0 TT=0 * BV=infinite IBV=1mA .MODEL MD1 D IS=1e-32 N=50 +CJO=1.96085e-10 VJ=0.665506 M=0.480463 FC=1e-08 D3 5 0 MD2 * Default values used in MD2: * EG=1.11 XTI=3.0 TT=0 CJO=0 * BV=infinite IBV=1mA .MODEL MD2 D IS=1e-10 N=0.4 RS=3.00002e-06 RL 5 10 1 FI2 7 9 VFI2 -1 VFI2 4 0 0 EV16 10 0 9 7 1 CAP 11 10 6.62636e-10 FI1 7 9 VFI1 -1 VFI1 11 6 0 RCAP 6 10 1 D4 6 0 MD3 * Default values used in MD3: * EG=1.11 XTI=3.0 TT=0 CJO=0 * RS=0 BV=infinite IBV=1mA .MODEL MD3 D IS=1e-10 N=0.4 .ENDS irfl9014



-----------------------------------------------------------------------


I made a model by model editor. 

getting errors. like 
-------------------------------------------------------------------------

INFO(ORPSIM-15423): Unable to find index file irfl9014.ind for library file irfl9014.lib.

INFO(ORPSIM-15422): Making new index file irfl9014.ind for library file irfl9014.lib.

Index has 0 entries from 1 file(s).


ERROR(ORPSIM-15108): Subcircuit IRFL9014 used by X_M1 is undefined

----------------------------------------------------------

getting problems after Pspice model is made from txt.

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Hi, i need to make a Pspice part for simulation. the Maker company only gives this data. 

------------------------------------------------

*Jun 01, 2010 *Doc. ID: 90412, Rev. A *File Name: part irfl9014_PS.txt and part irfl9014_PS.spi *This document is intended as a SPICE modeling guideline and does not *constitute a commercial product data sheet. Designers should refer to the *appropriate data sheet of the same number for guaranteed specification *limits. .SUBCKT irfl9014 1 2 3 ************************************** * Model Generated by MODPEX * *Copyright(c) Symmetry Design Systems* * All Rights Reserved * * UNPUBLISHED LICENSED SOFTWARE * * Contains Proprietary Information * * Which is The Property of * * SYMMETRY OR ITS LICENSORS * *Commercial Use or Resale Restricted * * by Symmetry License Agreement * ************************************** * Model generated on Oct 22, 96 * MODEL FORMAT: SPICE3 * Symmetry POWER MOS Model (Version 1.0) * External Node Designations * Node 1 -> Drain * Node 2 -> Gate * Node 3 -> Source M1 9 7 8 8 MM L=100u W=100u * Default values used in MM: * The voltage-dependent capacitances are * not included. Other default values are: * RS=0 RD=0 LD=0 CBD=0 CBS=0 CGBO=0 .MODEL MM PMOS LEVEL=1 IS=1e-32 +VTO=-3.87971 LAMBDA=0.0503704 KP=0.713612 +CGSO=2.47152e-06 CGDO=1e-11 RS 8 3 0.116837 D1 1 3 MD .MODEL MD D IS=5e-21 RS=0.15039 N=1.5 BV=60 +IBV=10 EG=1.2 XTI=4 TT=1e-07 +CJO=4.40194e-10 VJ=1.63887 M=0.440757 FC=0.5 RDS 3 1 600000 RD 9 1 0.0001 RG 2 7 9.4415 D2 5 4 MD1 * Default values used in MD1: * RS=0 EG=1.11 XTI=3.0 TT=0 * BV=infinite IBV=1mA .MODEL MD1 D IS=1e-32 N=50 +CJO=1.96085e-10 VJ=0.665506 M=0.480463 FC=1e-08 D3 5 0 MD2 * Default values used in MD2: * EG=1.11 XTI=3.0 TT=0 CJO=0 * BV=infinite IBV=1mA .MODEL MD2 D IS=1e-10 N=0.4 RS=3.00002e-06 RL 5 10 1 FI2 7 9 VFI2 -1 VFI2 4 0 0 EV16 10 0 9 7 1 CAP 11 10 6.62636e-10 FI1 7 9 VFI1 -1 VFI1 11 6 0 RCAP 6 10 1 D4 6 0 MD3 * Default values used in MD3: * EG=1.11 XTI=3.0 TT=0 CJO=0 * RS=0 BV=infinite IBV=1mA .MODEL MD3 D IS=1e-10 N=0.4 .ENDS irfl9014



-----------------------------------------------------------------------


I made a model by model editor. 

getting errors. like 
-------------------------------------------------------------------------

INFO(ORPSIM-15423): Unable to find index file irfl9014.ind for library file irfl9014.lib.

INFO(ORPSIM-15422): Making new index file irfl9014.ind for library file irfl9014.lib.

Index has 0 entries from 1 file(s).


ERROR(ORPSIM-15108): Subcircuit IRFL9014 used by X_M1 is undefined

----------------------------------------------------------

Nc Drill Table to large for page

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I have designed a relatively large PCB using a predefined page, when I go to create the NC drill table it is to large to fit in the page outline next to my Layout (shown below)

Is there a way to shrink the Drill table as I would prefer not to modify the Page outline

I am running 16.6 with the latest patch

Thanks for any help in advance

BGA ball collapse/compress

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Hi all,


After soldering of a BGA, is there a possibility of ball collapse or compress? If so, how much it will be?

Any inputs will be appreciated.


Thankyou

Shiva.

How to automatically replace reference designators on PCB

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Hi,

Is there possible to place automatically reference designators on the PCB (Allegro 16.6)? I mean the function similar to i.e. Altium that can automatically replace designators in the predefined order and orientation. I need to generate an assembly drawing for my PCB which has around 900 components on both sides, and I don't want to replace manually each of the reference designator text.

Reports in Allegro PCB Editor

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In Allegro PCB editor, we are able to generate lot of reports in Tools -- Reports. But, when I compare the generated reports with the manually calculated results, I found lot of mismatches. Is there any way to see the inbuilt formulas written for these reports?

Thanks,

Thangapandi Arumugam 


Reg:customized symbol drawing template for footprint creation as default when we invoke for new symbol creation

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Dear Friends

 

I am using LP wizard (mentor grphics)for generating the footprint , the script built in it invoke the allegro .dra wizard to create the footprint

 

I want to add a custom symbol drawing template (with page size color coding for different class like silkscreen assembly line width , text size class) as default input to wizard .. mean to say that

 

When I generate Footprint using LP wizard the LP wizard script should consider my custom template for creating symbol .. I checked in LP wizard but felt nothing to do with LP wizard need to do some

 

setting in allegro itself. Overall my intension is if somebody reviewing the footprints if follow the unique color coding , then by just doing the care full visulation he can make out if something missed out

 

[Problem I came across silk legend in black color, assembly & silk in same color ,Placebound & DFA in same color]

 

If anybody has same idea , came across same issues please help me by sharing info/tips.

 

Thanks

 

Best Regards

Girish Kumar

Design Parameter Editor/Route show column description.

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Is there any description of  the show column in the Design Parameter Editor/Route screen ?

Min_Line_Width

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How can we set Min_Line_Width property through TCL Scripting ? I want to set the property of "Min_Line_Width" to "15" on all Global Nets of a page. I tried different ways but couldn't able to do so. I tried on all Flat Nets of a design and wires as well,when I Get the line width through GetLineWidth it returns me 3 in result of every wire or Net even if the Min_Line_Width value is empty. I am setting the line width through SetLineWidth,the program runs successfully but no change is made in Min_Line_Width property.

Help me out plz!!!

[OrCAD PCB] How to Copy [ Part ] from [ A.OLB ] file to [ B.OLB ] file using TCL Command

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Dear All,

As the Title, How to Copy  [ Part ]  from  [ A.OLB ]  file to [ B.OLB ]  file  using TCL Command.

I just know how to copy a part by tcl command , but don't know how to paste it to another OLB file.

Is it possible to Achieve this target?

Thanks a lot!!

Placing the logo symbol in OLB files

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Hi all,

I wanted to make automation for editing the OLB files and I need to place TI logo(Marked area) in the middle of the OLB file. 

Please can any one tell me how to start with placing the logo at the middle of symbol?

Thanks in advance.

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