Altera JNEye Manual de usuario descargar pdf (Pagina 94)

Figure 2-70: JNEye Data Viewer Q-Factor Plot (Amplitude Axis)

Transmitter Reference Clock Phase Noise Analysis and Plots

JNEye plots the phase noise power spectrum through the link. The transmitter reference clock’s phase

noise travels through the transmitter PLL, emulated scope, channel, and the RX CDR. In this process,

phase noise is shaped by the TX PLL, scope (pass through only), and RX CDR. At the same time, the

transmitter and receiver also generate their own intrinsic jitter which is mixed with the jitter caused by the

shaped phase noise. The JNEye simulation engine processes and records the phase noise characteristics

transition and the amount of random jitter the device contributed internally.

2-88

JNEye Data Viewer Module

UG-1146

2015.05.04

Altera Corporation

Functional Description

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Altera JNEye Manual de usuario Pagina 94