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  3. relative propagation delay problem

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relative propagation delay problem

yosephcz
yosephcz over 14 years ago

Hello,

I am trying to do testing of relative propagation delay feature in PCB editor 16.3. I have prepared very simple *.brd example file where are 3 resistors and 3 nets only. I am trying to autoroute that example to get all 3 nets the same electrical length in tolerance 20 mil. I am able to do it by Constraint Manager "Min/Max Propagation Delays" settings but I am not able to do that by "Relative Propagation Delay" settings. I tried Match Groups etc. but no success. Can anybody try to do that - example *.brd file I put here:

rapidshare.com/.../tst1.brd

Please send successfuly routed *.brd file back or give please advice how to do.

Thanks a lot!

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  • oldmouldy
    oldmouldy over 14 years ago

    I don't think that you have the Relative Propagation Delay DRCs enabled, hence PCB Router won't consider the Relative Propagation Delay rules. In Constraint Manager, Analyze>Analysis Modes, Electrical Modes, enable "Relative propagation delay", or "All on" to get the DRC enabled, the the Relative Propagation Delay will be matched by the router.

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  • yosephcz
    yosephcz over 14 years ago
    Thanks a lot, now it works.
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