# Jitter Mode Setup *(Graphs tab)*

## Graphs

Use the **Graphs** tab of the Jitter Mode Measurements Setup dialog, to configure graphs.

For 12-Edge Output Jitter measurements, only the **Histogram Y-Axis** field is available.

## Graph Layout

The Graph Layout selection refers to the maximum number of graphs displayed at one time. The choices are one (Single), two (Split), or four (Quad) graphs. Double click a Jitter Mode graph to toggle between the display of single and multiple graph views.

## Graph Options

### Histogram Y-Axis

For the jitter RJ,PJ, and TJ graphs and the amplitude graphs RN, PI, and TI graphs, the y-axis can be displayed using a linear scale (default) or log scale. This control does not apply to composite histograms.

Figure. Linear Scale

### Bathtub Scale

Use to select the y-axis units (BER or Q-Factor) for the BER Bathtub graph.

Figure. Log Scale