A system including a filter circuit, an error module, and a measurement module. The filter circuit receives, from a network device, an analog signal having jitter, generates an equalized signal based on digital feedback signals and the analog signal, and generates a recovered data signal based on the equalized signal. The recovered data signal includes data transmitted by the network device to the system. The error module generates an error signal based on the equalized signal and a threshold signal. The measurement module generates a multiple signals based on the recovered data signal, and the error signal. The multiple signals include the digital feedback signals and eye characteristic signals. The eye characteristic signals indicate characteristics of an eye diagram of the recovered data signal. The measurement module generates the digital feedback signals such that the eye diagram of the recovered data signal does not include the jitter.