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ADE: Use of nested design variables in output expressions

sommer

Hello,


I have defined the following design variables: (for sake of clarity I use the OCEAN syntax)

desVar(      "fin" 400M    )
desVar(      "Tin" "(1/VAR(\"fin\"))"    )
desVar(      "simTime" "500*VAR(\"Tin\")"    )

Now I try to plot an eye diagram using:

EYE = eyeDiagram((VT("/Vout+") - VT("/Vout-")) 0 VAR("simTime") ((2 * VAR("Tin"))))

#

#

it does not work. I get the following error message:

sevPlotAllOutputs('sevSession13)

*Error* ("eval" 0 t nil ("*Error* eval: not a function" (2 * VAR("Tin"))))

ERROR (ADE-1057): Could not evaluate expression

Name:'EYE'

Expression:'eyeDiagram((VT("/Vout+") - VT("/Vout-")) 0 VAR("simTime") ((2 * VAR("Tin"))))'

because of the following error(s)

("eval" 0 t nil ("*Error* eval: not a function" (2 * VAR("Tin"))))

Ensure that the definition of the expression is correct.

#

#

#

When I use only the variable "fin" in my expression, the plot succeeds:

EYE_EXPLICIT = eyeDiagram((VT("/Vout+") - VT("/Vout-")) 0 ((500 * 1) / VAR("fin")) ((2 * 1) / VAR("fin")))

Is there a way to use the nested variables in the output expressions?

In my simulation setup for the tran simulation I can use nested variables:

analysis('tran ?stop "1*VAR(\"simTime\")"  )

we work with IC6.1.6-64b.500.8

Best regards

Hans

Parents
  • Andrew Beckett

    Hans,

    This is not because of the nested variable references, but due to the fact that SKILL (which what your expression is) doesn't like duplicate matched parentheses. These confuse the parser where it is trying to determine whether it should use C-like or Lisp-like expressions:

    eyeDiagram((VT("/Vout+") - VT("/Vout-")) 0 VAR("simTime") ((2 * VAR("Tin"))))

    In this case the problem is around the 2*VAR("Tin") - you have two parentheses before and two after. In fact you don't need either of the two parentheses, but if there was only one it should work:

    eyeDiagram((VT("/Vout+") - VT("/Vout-")) 0 VAR("simTime") (2 * VAR("Tin")))

    Better still:

    eyeDiagram(VT("/Vout+") - VT("/Vout-") 0 VAR("simTime") 2 * VAR("Tin"))

    Regards,

    Andrew.

Reply
  • Andrew Beckett

    Hans,

    This is not because of the nested variable references, but due to the fact that SKILL (which what your expression is) doesn't like duplicate matched parentheses. These confuse the parser where it is trying to determine whether it should use C-like or Lisp-like expressions:

    eyeDiagram((VT("/Vout+") - VT("/Vout-")) 0 VAR("simTime") ((2 * VAR("Tin"))))

    In this case the problem is around the 2*VAR("Tin") - you have two parentheses before and two after. In fact you don't need either of the two parentheses, but if there was only one it should work:

    eyeDiagram((VT("/Vout+") - VT("/Vout-")) 0 VAR("simTime") (2 * VAR("Tin")))

    Better still:

    eyeDiagram(VT("/Vout+") - VT("/Vout-") 0 VAR("simTime") 2 * VAR("Tin"))

    Regards,

    Andrew.

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