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 What is the via tied to? 

Last post Fri, Mar 8 2013 2:35 PM by BuddSw. 3 replies.
Started by FrancisFogarty 07 Mar 2013 01:55 AM. Topic has 3 replies and 644 views
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  • Thu, Mar 7 2013 1:55 AM

    What is the via tied to? Reply

    Hi Guys

    i have an 6 layer board. Stack up:

     

    1. TOP/GND
    2. GUARD 
    3. GUARD 1
    4. GUARD 2
    5. GND
    6. BOTTOM/GND
     i want to place 2 via array structures 1 from layer 1 to 6 which will connect all GND and the other from layer 2 to 5 to connect all GUARDS.
    i setup the BBvia. the question i have is when i pour the copper for each layer using dynamic shape and assign net as supply_0 for GND  and and assign net as GUARD for the 3 Guard layers. will this do what im trying to do in connecting the appropriate layers to eachother.  i also set the thermal relief to full contact. 
     
    i ask this because i cant tell by looking at it what layer the vias are connected to and what layers they are not. How can i tel? i need to send this for manu by 12 today so advice needed. Thanks guys
     
    Regards
    Fran  

     

    • Post Points: 20
  • Thu, Mar 7 2013 6:41 AM

    • oldmouldy
    • Top 10 Contributor
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    Re: What is the via tied to? Reply

    For the purposes of checking this, turn the Thermal Reliefs back on, you will then see the spokes, 16.6 will embed the net names in the spokes. You could set the Thermal Relief type with Shape Instance Parameters, select Shape, right-click>Parameters, so that you can see this change for the layers, change the Thermal Oversize for example, you can undo these settings once the checks have been made.

    • Post Points: 20
  • Thu, Mar 7 2013 6:48 AM

    • stump1019
    • Top 200 Contributor
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    • Hopkinton, MA
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    Re: What is the via tied to? Reply

    Wouldn't vias have direct connects with no spokes?

    • Post Points: 20
  • Fri, Mar 8 2013 2:35 PM

    • BuddSw
    • Top 500 Contributor
    • Joined on Thu, May 12 2011
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    Re: What is the via tied to? Reply

    I believe that Oldmouldy is suggesting to turn the thermal reliefs back on only long enough to validate that the vias are connected to the correct copper pours, then turn them back to direct connect. The net connectivity does not change with regards to whether you have chosen direct connect or thermal relief.

    • Post Points: 5
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Started by FrancisFogarty at 07 Mar 2013 01:55 AM. Topic has 3 replies.