The ChipScope™ Pro Integrated Bit Error Ratio Tester (IBERT) core for Virtex™ 5 FPGA GTX transceivers is a customizable core that can be used to evaluate and monitor the health of the GTX transceivers. The design includes pattern generators and checkers implemented in FPGA logic, as well as access to the ports and attributes of the transceivers. Communication logic is also included to allow the design to be run time accessible through JTAG. The IBERT core is a self-contained design and when it is generated will run through the entire implementation flow including bit stream generation.