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Error in delay calculation

KISHORE085

hi all,

I've got  an error while calculating delay using delay function in virtuoso.

the error is : "(\"plus\" 0 t nil (\"*Error* plus: can't handle (nil + 0.0)\"))"Expression "delay(?wf1 v(\"/X1\" ?result \"tran-tran\"), ?value1 2.5, ?edge1 \"either\", ?nth1 1, ?td1 0.0, ?wf2 v(\"/sum\" ?result \"tran-tran\"), ?value2 2.5, ?edge2 \"either\", ?nth2 1, ?td2 0.0 , ?stop nil, ?multiple nil)" does not evaluate to waveform."

i couldn't figure out what was the error. Please help..

 Virtuoso version: IC6.1.5.72

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  • frankaurora

    The parameters ?td1 and ?td2 don't work in the example below because whatever value they are specified the time at which to start delay measurement is always time 0.

    tplh=delay( v("CLK1") 2.5 3 ?td1 15u "rising" v("OUT1") 2.5 2 "rising")

    Please give me some clue. Thanks.

Reply
  • frankaurora

    The parameters ?td1 and ?td2 don't work in the example below because whatever value they are specified the time at which to start delay measurement is always time 0.

    tplh=delay( v("CLK1") 2.5 3 ?td1 15u "rising" v("OUT1") 2.5 2 "rising")

    Please give me some clue. Thanks.

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