Multisim and Ultiboard Idea Exchange

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Do you have an idea for how to improve Multisim and Ultiboard? Submit and vote on ideas now!

  1. Browse by label or search in the Multisim and Ultiboard Idea Exchange to see if your idea has previously been submitted. If it has, be sure to vote for the idea by giving it kudos to indicate your approval!
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The Multisim and Ultiboard R&D team is committed to reviewing every idea submitted via the Multisim and Ultiboard Idea Exchange. However, we cannot guarantee the implementation of any Multisim & Ultiboard Idea Exchange submission.

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0 Kudos

I am using Multisim 14 with the BASYS3 board  to teach a beginning digital class.  It would be very useful to have a searchable document reference of the available PLD components.  The best way I see to get information now is to do a internet search on each individual name.  Are there any better sources?  Thanks so much for your help.

0 Kudos

It's possible to select, edit, and place a net bridge footprint in Ultiboard (that connect two different nets, such as analog and digital ground), but there is presently no way to create a net bridge component in Multisim to complete a schematic that exactly matches and forward annotates to a desired board layout.  At least some other software packages (e.g. Altium) do offer such a component.  The ability to create such a part in Multisim would make for a much cleaner process, including design verification.

0 Kudos

Some users have suggested the following ideas:

1) Add a feature searching functionality: The current search options are mostly related to the vendor name or characteristics, sometimes it could be cumbersome to find a part using the vendor name. Parts should be also accessible by its characteristics and features.

2) Add a command to access via command line the interactive simulation.

0 Kudos

Allow user defined IGBT SPICE model with IGBT symbol, just like for NMOS

0 Kudos

Hello everyone

It would be great if we could add a dummy object. I mean a schematic element that represents only the footprint. There are so many items that are not in your library. It seems a good idea if I could select a "DIP14" entry without a simulator behind it.
Only to be able to create a simple schematic...

I posted the following in the main Multisim - Ultiboard forum but it was suggested I post it here.  Sorry for the duplicate posting.

 

Digi-key and other distributors are providing schematic symbols and footprints via Ultra Librarian in many formats (e.g. OrCad, Altium, Cadence, even Eagle!!) but NOT for Multisim or Ultiboard.  I have asked the Ultra Librarian people why this is and they say they have tools to support it but are having trouble getting required information from NI to complete the work and make a release.  

 

What does it take to get Ultra Librarian the information they need?  Who is the right NI contact?  Why do we MS/UB users not have the same tools as the other package users?  

 

Multisim is a very powerful tool and suitable for educational purposes in first courses of Engineering careers. Howevers lacks of a very simple and useful flexibility that other simulators like PSPICE or QUCS have. Is not possible to modify the variable presented in the x-axis of the Graph View!

 

If you perform a DC Sweep, AC Sweep or Parameter Sweep analysis is very easy to change the variable presented in the y-axis. However, there is not a way to modify the magnitude used for the x-axis. Thus, for example to plot the IV curve of a diode is not straightforward. In a circuit with a battery, resistor and a diode in series the user typically perform a DC sweep of the battery bias and plot the current vs the battery bias. However, is not possible to change the variable plotted in the x-axis to the voltage drop in the diode to visualize the IV (and threshold) of the diode.

 

Of course one can extract the results to an EXCEL sheet or use the IV analyzer instruments but this is not useful for educational purposes where you want to show the students similarities with the experiment performed in the breadboard of the laboratory.

In more advanced simulations sometimes the user also is interested to visualize some magnitude of the circuit vs different kind of magnitudes (voltaje, current, ...).

 

Therefore is required to have the possibility to allow the user to modify the variable of the x-axis for more flexibility of the simulations. 

0 Kudos

I was not aware that Msim needed a template for a user db. My original user db was created under Msim V10.1. The Same Machine was used for several years. Parts were added to the user db over time. The Same Machine went through several upgrades to Msim ending at V14.0. Whenever Msim was run and the user db was chosen as the source for components, all components were always available for insertion.

 

A new machine was purchased. V14.1 was installed. The old user db (".usr") was copied from the old machine and placed in the V14.1 database directory. When running Msim, it was discovered that the user db was "Blank", no parts, even though it was over 500kb. I tried convert db from v13 to V14. That failed with the message: "Problem: Database version .[User Database]. The User Database cannot be accessed. Features using the User Database will not be available."

 

I tried everything from V9 to V13 for conversion option with the same failure. I created a new part using the 14.1 Component Wizard and saved it to the user db hoping that might somehow transform the DB. When the user db was selected for the component source, Only The New Part appeared and all else was blank. The user db swelled to 750kb also. I tried to merge the user db to create a corporate db hoping to get a whole new db. Same result. Only new part was shown and the corp db was over 700kb.

 

I opened the user db for a look. Early in the file header "Standard JET DB" appeared. I wondered why Msim didn't have or look for the common Jet DB drivers (ADO?). It should have been able to read the user db and get all the component data. At least it should have been able to present the user with a field map to set up a current version user db (like excel does with a txt or csv file). That wasn't the case.

 

I went back to the old machine to look more closely at what files V14.0 was using to work with the user db ".usr" file. I stumbled upon "UsrCompTemplate_S.usr" under All Users/Application Data/...

 

I took a chance and copied the template file and dropped it in the new machine V14.1 database directory. I lit off Msim and the User DB was there, all parts ready for use. Apparently when Msim was upgraded each time in the old machine, the template was automatically carried forward into the new database or template directory for use with the user db. That's why the parts were always avalable and there was no reason to suspect that since V14.0 worked fine with the user db, that V14.1 would not work.

 

There was no prior installation from which to bring in a db template so the user db couldn't be accessed. BUT, if Msim was smart enough to look for the template file in the first place, why didn't it inform the user that a template was needed and that no template was found????  That would have saved me a lot of time and grief. Perhaps during a new installation Msim should ask the user if there is an existing user db AND it's required template to be imported. I don't recall that taking place if it did.....

 

Proposed Solutions:

1. Msim acquire and install Jet DB drivers so that a template is not an issue. (lot of work)

2. Msim Automatically Export the Entire User DB as a PRZ file Everytime there is a change to the db with a reminder to the user. (perhaps a little less work but a good enough solution)

3. Msim Notify the user that a template is missing and is needed to use the db (Lame lazy solution)

4. Msim Always Install Templates for All Versions of Msim when a new installation is done. We are only talking a few MB and implementation should be trivial. This may also permit an Automatic Upgrade of the User DB to current installation version. (Best Alternative?)

 

I think options 2 and 4 should be implemented.

 

Robert Phillips

Just Plain Bob

 

 

 

 

 

 

0 Kudos

lab report diagram

0 Kudos

More and more PCB fab vendors are asking for OBD++ output.  Eventually I think you are going to have to support it.

0 Kudos

When a new version of Multisim and Ultiboard is released, the old User DB must be converted to work with the new version. Unfortunately, the converted DB is saved to the default file location, even if that is not the current location of the User DB.

 

I believe it is good practice to set up the User DB in a location that is backed up regularly to guard against possible loss. Seems like the converted User DB should be saved back to the location where the old User DB was, whether that is the default location or not.

 

When we did the last version upgrade, it took me a long time to figure out why the conversion was not working. It turned out that the conversion itself was working, but the converted file was being saved in the default file location instead of the currently used location.

 

This behavior, although NI tells me it is working as designed, is rather insidious, and seems like it would be fairly easy to change.

0 Kudos

There is an error on Table Type Source manual.
Examples are not working.....
I attach correct examples.


TABLE Type Source
Instance declaration syntax:
Exxx o_node_p o_node_n TABLE{expression} < = > (x1,y1) (x2,y2) < (x3,y3) <...>> <uselim>

Example
E1 5 0 TABLE(V(1)**2) (-5,-5)(5,5)
GD99 2 13 TABLE {V(2,13)}=((-100,-1p)(0,0)(1m,1n)(2m,1m)(3m,1))
************* possible syntax ***************
E_U1_E90 U1_DROPOUT 0 table= { V(ISENSE)-V(0) }
+ ( (20m,1.5)(200m,1.62)(500m,1.75)(1,2)(1.5,2.25) )

E_U1_E91 U1_DROPOUT 0 table= { V(ISENSE)-V(0) } ( (20m,1.5)(200m,1.62)(500m,1.75)(1,2)(1.5,2.25) )

************* impossible syntax ***************
E1 5 0 TABLE(V(1)**2) (-5,-5)(5,5)
GD99 2 13 TABLE {V(2,13)}=((-100,-1p)(0,0)(1m,1n)(2m,1m)(3m,1))

E_U1_E92 U1_DROPOUT 0 table= ( V(ISENSE)-V(0) ) ( (20m,1.5)(200m,1.62)(500m,1.75)(1,2)(1.5,2.25) )
E_U1_E93 U1_DROPOUT 0 table= { V(ISENSE)-V(0) } { (20m,1.5)(200m,1.62)(500m,1.75)(1,2)(1.5,2.25) }
E_U1_E94 U1_DROPOUT 0 table={ V(ISENSE)-V(0) } { (20m,1.5)(200m,1.62)(500m,1.75)(1,2)(1.5,2.25) }
E_U1_E95 U1_DROPOUT 0 table=( V(ISENSE)-V(0) ) { (20m,1.5)(200m,1.62)(500m,1.75)(1,2)(1.5,2.25) }

This is a great circuit simulator especially for those on tight budget, but 25 components seem low and really limits the usefulness to the free version. Some other web based simulators do not have this restriction and some have no limit on components at all. Please consider making the free version with less restrictions with this I suspect you would bring along more interest in NI in general.

Thank You 

Thomas Zaprzalka

Unfortunately there seems no way to upload an existing circuit design to multisim live. The only file extension accepted is .msjs. Trying to upload any .ms14 design is simply ignored (not even an error or warning is displayed)!

0 Kudos

Hi

Was advised to post this here so here it is. (again, with tags this time)

Some problems I've encountered so far in no particular order:-

1. Part reference: When selecting a part, regardless of where the cursor is once selected, I would expect the part to jump to the cursor on its part reference.......it doesn't, it picks it up wherever you choose. I've tried the "change the grids" to smaller, but this seems ridiculous that you have to zoom in to pick a part on centre, or type in co-ords. The only way I've found is via the "part tab", but you can't keep going to that every time you want to move a component.

 

2. Printing: When printing out the board layers, top, bottom, ident etc. and selecting fit to page, it doesn't, it's like the preview is seeing another layer that is turned off. So you get a print that looks like it's seeing the drawing format.

 

3. Rotate component: CNTL R for 90deg. If another rotation is required it's by numerous clicks of the mouse. Why can't a specified increment be set up eg 45deg. via say CNTL,ALT R. If numerous components are being placed at a specified angle, to have to click select click select from a mouse right click sub menu is time consuming.

 

4. Toggle between preset grids via shortcut key.

 

5. Assign a net a colour: I generally turn 0V & +V off when placing to de-clutter. BUT, where certain nets need to be easily identified, like a locally used voltage, earth ground etc, this is useful.

 

6. Layers: Global turn ON/OFF of layers, having to double click (to grey, then off) is a pain.

 

7. Drawing blanks A2, A3 etc: To have said blanks saved as a default with standard commonly used notes, and have the fields/attributes (drawn by, date, drawing no, title, material, finish, etc) tabulated to fill in like an Autocad block.

 

So far, the manual and the net have failed me for answers.

That's it......for now.

 

Russ

0 Kudos

 

In a recent design I had rule violations I was not aware of until ordering boards because teardrops added in did not generate errors on spacing violations, even when they were causing a direct short.  I would have to consider this a significant defect in UB.

UB14.1 Win10 64b

 

Discussion and spacing violation with no errors shown here:

https://forums.ni.com/t5/Multisim-and-Ultiboard/Teardrops-and-design-rule-errors/td-p/3684720

Hi, i am a inventer building and winding my own coils

since your program is perfect for testing differant windings i have a few things i want you to add

 

multilayers sow for instand a 4 layer transformer

select with type of wire and the gauge witch automaticty calculates the ohms

the shape of the coil turoid or tesla coil like

the core itself, i would like an option to use a micrometalmix core or an aircore

 

thanks in advance

The only way to do a horizontal cylinder is a resistor body between pins.  Often other configurations of horizontal cylinders are needed.  i.e. tubular radial resistor that lays over on it's side, some relay bodies, and various mechanical objects that don't have axial electrical pins. 

 

I've had to resort to horizontal rectangles to do this, which does not convey the image very accurately.

0 Kudos

Since netnames, power supply names and sheet connector names are not actually parts there is no conflict for naming a refdes the same as one of these.  I believe this used to be OK in some previous version of MS.

 

This would be very useful for test point parts.

 

Does anyone even read these ideas?

 

Hello to all,

 

it was cool, if we have MultiSIM 3D virtual breadboard view for myDAQ and Digilent boards like we have for the Elvis boards.