CARMENES VIS measurements of J22468+443 (EV Lac). Top: Order-by-order RVs from four representative observations. Red, green, and blue show three observations with close-to-median Hα emission. Black plots an observation with extremely high Hα emission, taken during a strong flare event (Fuhrmeister et al. 2018). The corresponding log L_Hα∕L_bol values are given in the inset. Dashed lines show the best-fit straight lines to the RV–order scatter plots of each observation. Individual-order RV uncertainties are not shown in the plot for clarity, but they are on the order of 10–30 m s⁻¹, depending on the RV-information content and the S/N in each order. The markers at the bottom specify the locations of the indicated chromospheric emission lines. Bottom: Parts of the VIS spectra from these four observations, centered on the Hα line. The colors are the same as in the top panel.