Hi Zaheer,
I’m glad I was of help for your previous question. To generate the histogram you will need to connect an eye diagram analyzer. In the eye diagram analyzer you will need to select the region and then calculate the histogram. If you click on the eye diagram analyzer and then click on the help icon that i circled in the picture, the documentation for the eye diagram analyzer will come up. in the documentation you can read up on how to select the regions for analysis.
Regards,
Josh