4. InstallationImage 4-27Projector lens connector2. Secure the connection by turning and fastening the locking ring4.5.7 Lens DataECRExtended Contrast ratio allows to increase the contrast of the image while the light output decreases.ECR (Extended Contrast Ratio )The lenses used in the projector are fitted with a non volatile memory holding the lens serial number and dynamic aperture look uptables. These look up tables allow to determine the exact opening position in function of the desired light output (determined forexample by the Time of Day setting ).To make this possible the lens is connected to the front of the projector chassis through a 16-wire cable.ConnectionThe connection to the projector transmits signals for the lens aperture data and the zoom and focus motor control (power).117193Image 4-28Lens connector pinoutPin number Pin description13,14,15,16 D1,D2,D3,D417 ++5V18 Sens19 GNDTable 4-4Pinout overview tableR59770330 SIM 7QP SERIES 08/12/2014 25
