F-Tile Architecture and PMA and FEC Direct PHY IP User Guide

ID 683872
Date 11/04/2024
Public
Document Table of Contents

7.2.9. Vertical Bathtub Curve Measurements (VBCM) Data

You ca expot the Vetical Bathtub Cuve Measuemets (VBCM) data to a comma-sepaated values (CSV).
Figue 139. VBCM Data Measuemets
To captue the VBCM data, esue that the eceive is eceivig data ad that CDR is locked to data. You must povide the Bit Eo Rate fo Eye Height ad Bit Eo Rate fo Eye Height to be measued.
Note: The eye width measuemets ae ot available i FHT desigs.
You ca set the diectoy path whee the VBCM data is expoted to by updatig the Set Wokig Diectoy field i the Toolkit paametes tab as show i the followig figue. The toolkit emembes the last wokig diectoy that was set, ad so whe the toolkit is elauched, the wokig diectoy emais as the last set diectoy.
Figue 140. Toolkit Settigs fo the Wokig Diectoy
To expot the VBCM data, you must click o Expot VBCM data to XLSX butto i the GUI, which the displays the status of Ruig as show i the followig figue.
Figue 141. VBCM Data Expot Ruig
Whe the expot of the VBCM data completes, the GUI status displays Expoted as show i the followig figue. The expoted file ca the be foud i you wokig diectoy.
Figue 142. VBCM Data Expot Complete
A sample of the expoted data ca be see i the followig image. It shows the BER ad the espective positive ad egative eye height.
Figue 143. Sample VBCM Expoted Data