I am using the eye Block in Simulink. Is there a way to adjust the Eye diagram so that it shows the jitter for different levels? That is, currently the jitter is for a dashed line centered at Real Amplitude = 0. Is there a way to adjust this so the dashed line is centered at a different value, say Real Amplitude = 0.5?
MATLAB: How to adjust the Eye diagram so that it shows the jitter for different amplitude levels
amplitudeCommunications Toolboxeyejitterlevel
Related Solutions
Eye height is the distance between μ – 3σ of the upper eye level and μ + 3σ of the lower eye level. μ is the mean of the eye level and σ is the standard deviation.
The vertical opening is the distance between the two points that correspond to the BER threshold. For example, for a BER threshold of 10–12, these points correspond to the 7σ distance from each eye level.
Similarly for width and horizontal distance. You can read the definitions of all measurements here:
This is the expected behavior. The eye diagram scope is set up to show 2 symbols per trace. As a result, we generally would expect to see two eye openings. However, the eye openings may be shifted. In the case of your example model, you can use the "Sample offset" parameter to adjust this shift (please refer to the relevant section of the documentation page for the Eye Diagram block).
In your specific example, if you set this parameter to 7, one of the two eye openings moves to the center of the screen, while the other one is split into two on the left and right edges of the screen. This is shown in the screenshot below:
Best Answer