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and
XAPP1198<ref name="XAPP1198">Luis Bielich, ''XAPP1198 (v1.1) In-System Eye Scan of a PCI Express Link
with Vivado IP Integrator and AXI4'', 19th November 2014''</ref>, thus reading of these documents is highly recommended.
The issue that this White Paper addresses is the need to monitor multi-gigabit transceivers link status in a <u>non-intrusive way</u> and <u>on the field</u>{{efn|That is after product has been sold and it is operating.}}. Just imagine a product that is based on the architecture similar to the one depicted in the following figure. It is assumed that this architecture is quite representative of many real use cases.
