[PCB_FORUM] Re: Prop Delay - Analysis Failed

  • From: Andy_Kulik@xxxxxxx
  • To: icu-pcb-forum@xxxxxxxxxxxxx
  • Date: Mon, 14 Mar 2005 09:38:17 -0500

If the net is not fully routed the box will stay yellow. Cm should tell 
you that at the very bottom bar of the UI.
To enable unrouted drc mode go to the Analyze Menu in CM and select 
Analysis Modes.
In the Options tab of the resulting UI select the according checkboxes.

;-) Andy





Dave Seymour 
Sent by: 
03/14/2005 09:26 AM
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[PCB_FORUM] Prop Delay - Analysis Failed






On 15.2

I have a net with the  PROPAGATION_DELAY set.
The electrial constraints form button is "on".

In the CM spreadsheet, The cell is yellow and reports
that the Analysis failed.


What are the reasons that the Analysis could fail?

Is there something else to setup?

Thanks
dave




LISTING: 1 element(s)

              < NET > 

  Net Name:       PB_MDQS1

  Via Count:              2
  Total Etch Length:      2625.77 MIL
  Total Manhattan Length: 2023.08 MIL
  Percent Manhattan:      129.79%

  Pin                     Type      SigNoise Model
  ---                     ----      --------------
  RP3008.5                BI        CDSDefaultIO 
  U11.J25                 BI        CDSDefaultIO 

  No connections remaining

  Properties attached to net
    PROPAGATION_DELAY = L:S:2655 MIL:2660 MIL

  Electrical Constraints assigned to net
    prop delay: from L to S  min=2655 MIL  max=2660 MIL

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