A preview monitor is also available on the lectern which can display any of these sources. Note that a Mute button for the projector and preview monitor is also available. Muting of the image will allow the user to break a presentation, ie. Depending on the theatre a multi-standard or SVHS Video Cassette Recorder is permanently mounted in the lectern. If the standard of your video cassette is catered for, an external video could be plugged into the lectern.
Audio inputs are also available for external video sources and multimedia external computers.
Slide projector controls are available for turning the lamp or projector off. Turning Off a projector will also raise the projection screen. Various configurations available from this page allow the user to simultaneously use slide and white or black boards, overhead projectors, or video by the manual setting of screens and projectors. Room controls for lighting and projection screens are also available from this mode. This mode simply lowers a screen ready for Overhead Projector use.