Hi Joe, You need to set the SPICE of the MOSFETs and, perhaps, add a .include with the path to the SPICE model file.
So, 1) select the nMOS node (for both layout and schematics).
2) Go to the menu Tools -> Simulation (Spice) -> Set Spice Model
3) This puts text on the nMOS node. Change this text to the MOSFET model
name.
If you still get an error make sure that you add, using the Misc. menu item
on the left (Components tab), Spice Code that indicates the location of your
SPICE models, see attached example.
If this doesn't work please post your jelib and I'll take a look, Jake.
On Tue, Feb 23, 2010 at 6:16 PM, Joe <jiaob...@gmail.com> wrote:
> Hi all,
> I am new to Electric. When I try to use LTspice to do the analog
> simulation for Electric drawing, the popup window gave me the error
> messages:
>
> mn...@0:Can't find definition of model "n" L=400n W=1u
> mn...@1:Can't find definition of model "n" L=400n W=1u
> mn...@0:Can't find definition of model "p" L=400n W=1u
> mn...@1:Can't find definition of model "p" L=400n W=1u
> No analysis request found
>
> -----------------------------------------------------------------------------------
> And the LTspice error messages:
>
> Circuit: *** SPICE deck for cell tool-SimulateSPICE{lay} from library
> samples
>
> Error on line 12 : mn...@0 n...@0 n...@3 probea gnd n l=0.4u w=1u
> as=0.45p ad=0.967p ps=2.1u pd=3.267u
> Unable to find definition of model w - default assumed
>
> Error: No unlabeled parameter permitted for MOSFET's
> Error on line 14 : mn...@1 probea n...@2 gnd gnd n l=0.4u w=1u as=2.5p
> ad=0.45p ps=9u pd=2.1u
> Unable to find definition of model w - default assumed
>
> Error: No unlabeled parameter permitted for MOSFET's
> Error on line 15 : mp...@0 vdd n...@3 n...@0 vdd p l=0.4u w=1u as=0.967p
> ad=1.95p ps=3.267u pd=6.9u
> Unable to find definition of model w - default assumed
>
> Error: No unlabeled parameter permitted for MOSFET's
> Error on line 17 : mp...@1 n...@0 n...@2 vdd vdd p l=0.4u w=1u as=1.95p
> ad=0.967p ps=6.9u pd=3.267u
> Unable to find definition of model w - default assumed
>
> Error: No unlabeled parameter permitted for MOSFET's
> Fatal Error: No analysis request found.
> -----------------------------------------------------------------------
> I have done all the setting according to this:http://cmosedu.com/cmos1/
> ltspice/ltspice_electric.htm
>
> Can anyone tell me what should I do to correct this error? I think
> maybe need to set NMOS or PMOS model, but don't know how...
> Where can I find some more information about LTspice and Electric? For
> example, the simulation procedures.
>
>
> Thank you
>
> Joe
>
>
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