All VIS illuminators support a large subset of the entire Pelco D-Protocol. The standard serial interface supports D-Protocol using either RS-232 or 2-wire half-duplexed RS-485 connections. The VIS True Hybrid models add an additional 4-wire full-duplexed RS-422 interface. The D-Protocol Standard Commands are supported, with Zoom commands controlling the illuminator’s field of illumination, the Iris commands controlling the illuminator’s brightness setting, and the Focus commands controlling the illuminator’s turn-on threshold setting. Additionally, many of the Extended Commands are supported, as well as a number of Pre-Defined Presets which enable VIS-specific control. Please refer to our D-Protocol Command Reference document available on our website.