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 Z axis delay 

Last post Tue, May 8 2007 12:07 AM by archive. 2 replies.
Started by archive 08 May 2007 12:07 AM. Topic has 2 replies and 933 views
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  • Tue, May 8 2007 12:07 AM

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    Z axis delay Reply

    Hello,

    When we include z-axis delay then from where it get the cylinder length? Is it read from setup advisor > crosssection? As a trace is only running between first & second layer and other one is between first & last layer in a 18 layer stackup with 140mil board thickness. So how can it calculate it?


    Originally posted in cdnusers.org by imaqsood
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  • Tue, May 8 2007 3:53 AM

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    RE: Z axis delay Reply

    The z-axis delay is measured using the settings contained within the cross section. For this extra delay rule to be calculated correctly the cross section value must be correct. The dielectric and copper thickness between the entry and exit layers are calculated and added to the overall propagation delay to give the final result.

    KP


    Originally posted in cdnusers.org by kp
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  • Tue, May 8 2007 7:13 AM

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    RE: Z axis delay Reply

    KP is 100% correct.  Below is an image of a 6 layer stackup which illustrates how the Z-Axis checks are calculated in Allegro that may further clarify the functionality.

    Hope this helps,
    Mike Catrambone
    UTStarcom, Inc.


    Originally posted in cdnusers.org by mcatramb91
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Started by archive at 08 May 2007 12:07 AM. Topic has 2 replies.