Do you use the metric or imperial system for design creation and layout?
Bonus question for the comments: What do you do when you import a symbol and it has the "wrong" measuring unit?
It is incredibly painful when other tools such as ADS export at 0.1inch into a schematic set at 2.5mm grid, which we chose before we came across that problem. Even a 2.54mm grid is not precise as there is of course no true metric equivalent. Whatever happened to the concept of the tools helping the designer by automatic scaling of some sort? Design Architect used to have a unitless grid system from what I recall.
You are right, a unitless grid system is what we need in DxDesigner. Do you know about any plans beth_beck or MENTOR_Shannonk ?
Sorry I will have to defer to Rob Davies.
I have dealt with the problem of the constraints being entered in mils, but the Designer uses a metric grid because that matches the pitch of the parts. It becomes confusing to evaluate the actuals.
There are no plans to move to a unitless grid - but we will look at improving how we move between mils and metric designs when user's change or import designs from elsewhere, but as ever specific enhancements should be supported by an Idea on the Ideas site.
Improving migration between mils and metric would be great. Please consider a unitless grid system in xDx Designer as symbols could be interchanged without limits. If you calculate between mils and inch you always have a rounding error...
For already mentioned reasons we stay with inches in schematics.
In layout I try to use metrics, but from time to time I come across bugs where functionalities do not work in metric settings. I created a few service requests for that recently, which changed to defect requests immediately.
Similar issues are caused by using comma instead of dot for the decimal separator. E.g. foreward annotation from Constraint Mgr to Xpedition or moving parts by keyin commands have issues with comma. Defect requests exist for those as well. Looks like software test coverage for non-US settings needs to be improved...
We are using metrics setting, but in English format (dot as decimal separator).Importing a symbol happens very rare. Till now I only used three different libraries, and as far as I can remeber I only needed to transfer symbols once. The odd thing was, although both have been drawn in metrics setting, they use different grids. Furthermore, the component which I wanted to import to my library had a far too fine grid, so connecting nets to the pins in schematics with a more coarse grid setting was a pain. The symbol pins had varying pitch distances. So I reworked the complete symbols. Took me one day for that FPGA.
Luckily it only happened once yet.
Unitless grid would be best.We often run into connecting issues with VX2.2 with a metric setting, combined with an inch grid, with an implicit ripper, which is not on the grid
We work in all metric.
I love the idea of unitless grid.
I got a few transfer of symbols, and every time there was some work to adjust to the grid and spacing, and font size setting.
We use inch in schematic, but metric in layout, so I vote Metric.
Yep. Also inch in schematic, metric in layout.
Same here, but we only use inch in schematic because the first symbols we used were designed in inch.
I really hate the imperial system, because there is no fixed factor between every unit.
Metric in layout, Inch in schematic since starting in VeryBest98 -> DesignCapture -> DxDesigner, we kept using the same symbols and same 0.1 Inch grid. Working Gridless in layout in um.
we had the issue again today with an PADS design from the US, being converted to DxDesigner and metric grid.
Huge effort, except there would be a unitless grid.
Did someone already raise an idea for that?
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