# :DISPlay:PERSistence:EYE

:DISPlay Persistence Commands

- :DISPlay:PERSistence:EYE
- :DISPlay:PERSistence:WAVeform
- :DISPlay:PERSistence:WAVeform:TIME

## Command Syntax

    :DISPlay:PERSistence:EYE {CGRade | GSCale}

## Query Syntax

    :DISPlay:PERSistence:EYE?

## Description

Real-time eye diagrams have infinite persistence. Eye diagrams are produced by overlaying (sometimes called folding) UIs (unit intervals) of waveform data about recovered clock edges. Overlaid data is saved in a database that records "pixel" hits where waveforms cross small boxes of vertical range and time range. Overlaid waveform databases are displayed so that pixels with a higher numbers of hits use more "intense" colors. The choices for displaying real-time eye persistence are:

- `CGRade` — A range of colors are used to represent the number of pixel hits in the overlaid waveform database. To change the colors used to show color grade waveforms, use the `:DISPlay:CGSPectrum` command.

- `GSCale` — Different brightness levels of the waveform color or gray are used to represent the number of pixel hits in the overlaid waveform database. To change the colors used to show gray scale waveforms, use the `:DISPlay:GSSPectrum` command.