Hi,

I am using Hyperlynx 8.1.

I created a Multiple layer PCB. I am not able to edit the Zo value of plane. Even If I change the Z0 value to zero, it automatically changes to 75 ohm.

In general, Z0 is zero for ground and power plane.

It will be helpful If I get a support.

 

Hello,

If you are a registrated user, you can find the help here:
http://supportnet.mentor.com/

If you are using an illegal version, you are out of luck.

Bertus