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BUG about Microns Unit accuracy

January 12, 2021, 6:43 pm
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Hi all,

I tested both APD and Allegro PCB at 17.2 version.

I found some bug about units accuracy for Microns.

at the first time it set the Accuracy value with 3 (see the pic below)

 

even if I can set the value to 4, action was canceled and back to original value 3 without other change value. (other value didn't changed to 4 accuracy)

and I also set the value to 2 so made it like below

after then, I can not increase the value to 3 again...

when I increase the value to 3, the action was canceled continuously..

Is there any way to set the Accuracy value to edit some Allegro script manually?

regard. 

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OrCad 17.2 cannot select components

January 13, 2021, 3:34 pm
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Hi,

I am on OrCad 17.2 and I keep running into issue where I just cant select and highlight a compenent. This is for schematic capture (not PCB). Can someone please help.

The only way I can stop is to shutdown the program and restart again. Seems it enters placement mode but never exits out.

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Merge Clines with same nets?

January 15, 2021, 6:49 am
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I used "Place Replicate" to copy a large circuit in my project. Some of the Clines didn't line up correctly when applying the replication. Now, I'm finishing the Clines, and it is creating these "elbows" in the Clines that make the trace more difficult to work with. The elbows are shown in the attachment as a diamond shape. 

Is there any way to merge the Clines to remove these areas?

Toolset is PCB Designer Professional 17.4-2019 S013.

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Importing from CIS to PCB editor doesn't create all the connection/rats

January 15, 2021, 1:09 pm
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After exporting netlist to board file (.brd) in CIS using  CIS [Tools]-[Create Netlist], I  can see all the components, but only few connection/rats.

During the netlisting/exporitng, I see this warning; 

"Schematic supports creating XNets for passive devices and for devices having XNET_PINS properties but the Layout will create XNets using DML Models. Updating the Layout to match the behaviour in the Schematic (Design Master)"

When I opened PCB editor, it looks like connections between passive components are missing, and how can I export all the connections to layout ? 

Can anybody help me ?

Thanks !

Asako

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Cadence PCB Editor 17.4 will not open SolidWorks DXF as Design Outline

January 16, 2021, 4:46 pm
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Hey everyone, I am trying to use the DXF generated from SolidWorks as board geometry design outline but the PCB editor throws errors and won\t accept the DXF file!

In contrary, if I try exporting the DXF from fusion 360 it will work!




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Allegro Library Creator 17.4 Licensing Error

January 18, 2021, 3:36 am
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I am using Cadence Allegro PCB 17.4-2019 for PCB desgining. All licenses are working perfect except the Allegro Library Creator 17.4. When i open this program, the error displayed, " Could not acquire application license, existing". I have attached the snapsot for the reference. 

Please provide the remedy for this issue.

Best Regards,

MohsinLicense Error

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Existing components library update

January 19, 2021, 12:22 pm
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I'm using OrCAD 17.2. I just updated all the library components from vendors to our centralized library of an existing board design.

The netlists are compared and found no issues. When the import the netlist to the layout, the vias net names are disappeared which results the traces between one end of via to another end directly connected to GND plane.

Getting this issue on so many places of PCB and I should do it all manually set net name to via then move away shapes (Cu. pours) then move back the shapes in place which allows traces get same net name as Via.

Can someone guide me on how to resolve this issue? Thank you so much.

Regards,

Raju

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(17.4HF013)In the PCB setup of Allegro Project Manager, the background color display is abnormal！

January 20, 2021, 9:10 am
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17.4 hotfix 013

In the PCB setup of Allegro Project Manager, the background color display is abnormal！

Normally, the black background color should follow the theme, but now the black display is incomplete.

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(17.4HF013)In Footprint Viewer of OrCAD Capture, some buttons do not work!

January 20, 2021, 9:23 am
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(17.4HF013)In Footprint Viewer of OrCAD Capture, some buttons do not work!!

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Capture CIS 17.4 component browser hangs over VPN

January 20, 2021, 10:28 pm
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Hi,

Is it just me who has problems accessing the component library explorer when I'm connected to work using a VPN connection.

I'm in a schematic tab and press 'z' to invoke the browser, and the browser comes up. But when i click on the database icon to start browsing it the application hangs and never recovers

I can do this in 17.2 but in 17.4 the application hangs most of the times I try. I've had this problem on multiple hotfixes  I'm currently on 17.4 -S013 which was the latest when this was written.

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Curve traces, odd angles - Matched Length suggestions?

January 21, 2021, 3:57 pm
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Hi,

I have a couple issues with curved RF traces. First off, when inputting and stretching the lines, they become many, tiny line segments (that make via arraying the lines almost non-existent!). Is there a function to make these multi-segmented lines, one concentic curved trace???

But, the bigger concern is once I get the curved lines in (add connect), and they look fine. When I start trying to move the vertex's around it becomes a hassle.

Anyone have any suggestions to add these easily and to stretch them around to match the lengths?

FYI - these are set up on more of a Polar input than a 0, 45, 30, 90, etc orientation. They are more like polygon entry.

Thanks.

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Non activated "Place database Part" in OrCAD CIS 16.6

January 21, 2021, 5:02 pm
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Hi, I am a new user on OrCAD 16.6 CIS. I have connected CIS DB ( my team use it). I can open CIS Explorer and choose a part, BUT, I cannot place the part i selected on my Schematic. 

Is there anyone how can help me? I put too much my energy now.

Thanks,

CK

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ERROR(ORNET-1193): NETLIST FAILED

January 21, 2021, 11:35 pm
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INFO(ORNET-1148): Netlist Format: VHDL
INFO(ORNET-1149): Design Name: Suresh.practice_1.DSN
ERROR(ORNET-1048): Design is not annotated.
ERROR(ORNET-1006): Netlist failed or may be unusable.

Note: Annotation was done. Still, these error exists. Only while doing conditional annotation it shows part grouping not done. In the incremental reference, there is no error or issue. Followed this reference http://orcad.co.uk/images/PDF/Annotating_Multi_section_parts.pdf.

Need to know how to proceed further. 

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Add new libraries to the Pspice Search windows

January 23, 2021, 2:25 pm
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Sorry for bothering, but I really cannot understand how to do this - using Orcad 17.4

I'd like to add a new library to the list of libraries used in the Capture Place>Pspicecomponents>Search functionality. The library is meant to add a missing part and its associaten Pspice model

So far I have created a .lib with the Pspice model (actualli, I created it using Pspice Model Editor) and I have used Pspice Model Editor > Export to capture Part Library to generate the OLB. So I get a .OLB and a .LIB

But I don't seem to find a way to have Capture consider those files.

I tried so far without success:

  • I tried modifying %home%\cdssetup\OrCAD_Capture\17.4.0\capture.ini adding the folder to the PSpiceSymLibPath variable
  • modified %home%\cdssetup\OrCAD_PSpice\17.4.0\Pspice.ini adding a new lib entry to the [PART LIBS] (value the name of the lib I created)
  • Tried placing the olb in tools\cadence\libraries\pspice and the lib in tools\pspice\library

I also tried manually creating an olb but that does not help.

Looks like the list of libraries is in some way hardcoded, but it's not really the ini - i can see libraries not listed in the [PART LIBS]  section of he pspice.ini

Can someone please point me out to  some resource explaining how this is supposed to be done?
Thanks

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Capture CIS relational database buggy?

January 24, 2021, 8:58 am
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Well, 
I spent some time to understand how to make it work and I think there is a bug there.

I wanted to link a Diodes table to a procurement table using two fields instead of just the "Part Number" one (reason being that I wanted to have details for a double key relationship - involving not only the Part Number but also the Package.)

So I created a new FKEY field both in the Diodes table and the Procurement tables, set to the same value and in the CIS configration>Setup>Relational database, I set up the following

  • Primary key table name: Diodes
  • Primary key: FKEY
  • Relational table: Procurement

I expected to see the records matching the same FKEY fields, but it does not seem to work.

Looks like the link implemented in the database is always Diodes:Part number -> Procurement:FKEY instead of  Diodes:FKEY-> Procurement:FKEY

In particular here is the test table

Diode:FKEYDiode:Part NumberProcurmn:FKEYProcurmn:Part NumberRecord linked in relation table?
XXYYXXZZNo (expected yes)
AAXXBBXXNo
CCXXXXDDYes (expected no)
XXEEFFXXNo

 think this is a bug, imho. Binding relationship to Part Number of the "Primary key table name" table is actually quite limiting, as you cannot play around tweaking the Part Number field of the main CIS database tables.


Hoping that I got everything right of course. Apologies in advance if I got everything wrong.

Cheers

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About Source and Load of Net Logic Topology "Daisy Chain" and "Source-load Daisy-Chain"

January 25, 2021, 1:57 am
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Hi All,

I wonder about Topology Daisy Chain and Source-load Daisy-Chain.

I found the documentation from Parallel Systems about Topology below

but I couldn't understand that system, How to Allegro recognize the Source and Load pins?

for instance, my design below, I set the Source-Load Daisy Chain

and I extract the SigXplorer but although there is no any Electrical rule, SigXplorer recognized exactly the Source and Load pins everytime. (U1 Source, rest U5 Load)

I tried to place various location, but Topology was same all the time.

How to check which one is Source or Load when I apply the "Daisy Chain" and "Source-load Daisy-Chain" on my net?

best regards.

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Mass updating design cache after server migration?

January 25, 2021, 10:57 am
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I'm working out the details of a server move that would result in a change in the UNC path for drawings, symbol libraries and other orcad files. (\\oldserver\libraries\ -> \\newserver\libraries). From some failed experimenting, I don't seem to be able to update the DSN files as plaintext when opened in Notepad++ without corrupting the files. So I'm wondering if anyone else has been in this situation where all the hard links within the orcad files are no longer valid, and what their solution was.

Of course, I could tell everyone that every existing file will be 'broken' and need to be manually updated in several places (depending on # of libraries) to point to the new location...but I'm hoping there's something less disruptive that can be done instead. There are tens of thousands of these files, so it's not feasible for me to manually fix the files before switching servers. And unfortunately I can't point the old server name to the new one because it will still be used for other things afterwards and must retain the same name. I think I'm going to have this same issue with Altium files, but there are not as many of them.

Is there any CLI/programmatic way to interact with capture? Any mass-update tool? I'm even considering creating a scripted robot app that clicks to open orcad, and then finds portions of text on the screen corresponding to symbol libraries to update, then saves and closes. We can't be the only users to have migrated to a new server with new paths.....so it is a bit disappointing if the only solution really is to tell users to manually fix their files, as they encounter them. 

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Importing text logo in Cadence Allegro

January 27, 2021, 5:00 am
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How manage footprints for axial resistor vertical or horizontal mount

January 27, 2021, 3:12 pm
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Sorry folks, 

beginner here.

I wonder what is the proper way to handle the chance of mounting an axial resistor vertical or horizontal (I am thinking of a 1W axial resistor). Should I create two different symbols or can in someway select the footprint in PCB design phase?

For obvious reasons, I'd like to avoid duplicating the part - which I am managing in CIS

Thanks!

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Does it work OrCAD on MAC OS?

January 27, 2021, 5:29 pm
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Hi all,

I plan to buy Mac book in the future,

but I need to use OrCAD 

Does it work OrCAD on MAC OS?

if it does or not, where can I find about the datasheet for OS for OrCAD?

Regard

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