Preemphasis, Diff. Control, Equilizer settings

[flor1an]

Hi everyone,

I am currently working on a optical fibre link (SFP module) between two custom boards. The line rate is 3.125 Gb/s. I already succeeded in connecting these boards via mini Displayport cable but i can not establish a stable connection when using the SFP module. Now my question is: how do i have to setup the

Transmitter Post-Cursor TX Pre-Emphasis Control,

Driver Swing Control and

Receiver Equalization Control ?

I have setup the receiver termination as it is described for SFP+:

Does anyone have some advice for me?

Regards flor1an

[venkata]

How are you setting up the link? Are you using IBERT design? IBERT can help to sweep across the settings you described and find the best suit values for the link