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rk-blue-cubed
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Registered: ‎02-22-2019

IBERT: BER measurement looks good, but eye scan is not working

I am attempting to get an eye scan from an MPSoC system.  I have generated an IBERT image and have been able to get the MGT link up and quasi error free.  If I inject errors I see them detected as I would expect.

screenshot-20201223_165350.jpg

However, when I run the eye scan I see nothing but a BER of approx 1/2.  Any idea why this would be happening?  It's as if the MGT receiver isn't locking when in eye scan mode.  A screenshot of my eye scan result is attached.

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