Article ID: 000081736 Content Type: Troubleshooting Last Reviewed: 07/27/2018

Why does the SSN Analyzer report QH(Quiet High) and QL(Quit Low) margins over 1000% for my design?

Environment

BUILT IN - ARTICLE INTRO SECOND COMPONENT
Description

In the Quartus® II software version 9.1 SP1, the SSN Analyzer is overly pessimistic for some corner cases.

To fix this problem in the Quartus II software verison 9.1 SP1, download and install patch 1.45 from the links below:

For Windows:

For Linux:

This problem is scheduled to be fixed in a future version of the Quartus II software.

Related Products

This article applies to 1 products

Stratix® III FPGAs

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