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Eagle changes the selected track width while selecting a diferential airwire for routing

zainka

Hi

 

In my design there are several differential signals, each named with _N/_P at the end. I have also created a class for these signals, and yes I have assigned the differential nets to this class, The class has the width set to 6mil. Now, When I select the route tool i manually set the width to 6mil as-well but whenever I select a differential air-wire to rout the track width changes to 10mil automatically. I may change it manually back to 6mil again and continue routing, but the next time I select a differential track it switches back to 10 mil.  This is irritating at best and I have never seen this behavior before. Surly it must be some simple setting I have gotten wrong but I cant figure out what.

 

I have rechecked and checked again that the class is set correctly and I have used classes many times before without having this problem. I cant see any problems in the DRC setup either.

 

Any suggestion for where to look?

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    "vidar vidnes" <vidar.vidnes@yahoo.no> a écrit dans le message de news:

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    Hi

     

    In my design there are several differential signals, each named with

    N/P at the end. I have also created a class for these signals, and yes

    I have assigned the differential nets to this class, The class has the

    width set to 6mil. Now, When I select the route tool i manually set the

    width to 6mil as-well but whenever I select a differential air-wire to

    rout the track width changes to 10mil automatically. I may change it

    manually back to 6mil again and continue routing, but the next time I

    select a differential track it switches back to 10 mil. This is

    irritating at best and I have never seen this behavior before. Surly it

    must be some simple setting I have gotten wrong but I cant figure out

    what.

     

    I have rechecked and checked again that the class is set correctly and I

    have used classes many times before without having this problem. I cant

    see any problems in the DRC setup either.

     

    Any suggestion for where to look?

     

    Just have a look for the field 'Minimum Width' under the 'Sizes' tab in DRC

     

     

     

  • 0 in reply to autodeskguest

    I know it s a little bit late but i belive if any people will face this problem again like me here is my solution.
    Options > Set > Misc > uncheck the "Auto set route width and drill" checkbox.
    So what coused this problem? I think i probably missclick this button accidently. Because i can hit checkbox button from outside of chechbox.