Projection Devices, ContinuedSlide projectorSlide projectors have many accessories to create a custom system that worksaccessoriesfor your needs. Slide trays hold slides in sequence, locked into place, inincrements from 60 to 180 slides. Stack loaders allow the rapid loading andthe easy rearrangement of slides. Remote control cords with connections ofvarying lengths allow the operator mobility during presentation. Theseremotes signal the projector to go forward, in reverse, and to power focus.Variable focus lenses are available in long and short ranges to minimizedistortion in unusual presentation situations.Dissolve unitsOne accessory that contributes to a professional presentation is a dissolveunit. Most dissolve units are multi-functioning; that is, they fade an imageinto black or into another image, or have flashing or overlay capabilities.One or more projectors change an otherwise static presentation into adynamic display.—ProgrammersProgrammers offer the operator an opportunity to code a series of functionsor special effects into their slide presentation. Common special effectsprogrammers include the following:AUDIBLE TONE CONTROLLER: An audible tone controller activates theprojector by impulsing a tone. This coded tone signals the projector to dowhat the operator pre-programs into the device.PUNCH TAPE: Punch tape uses programming logic or electronic circuitryto pierce a paper tape with a code. The code punched onto this tape cues theprojector for multiple functions.ELECTRONIC MICROPROCESSORS: Electronic microprocessors digitizeinformation. This “bit” information triggers the programmer’s multiplefunctions automatically.Continued on next page5-16
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
