Vidikron vision70 manual Service

Operation

Service ➤

Service

White Balance

Gamma Selection

ICC Adjust

Image Over Scan

Video Black Level

Aperture Control

Image Shift

Amplitude

Horizontal Masking

Fan Control

Lamp Reset Timer

RS-232 Baud Rate

Remote Control

Screen Trigger Mode

Return to User OSD

To access advanced projector settings, use the up- or down-arrow keys to select Service from the Main Menu and press ENTER. Use the number buttons on the remote to enter the Service menu passcode when prompted and press ENTER again. Then, press MENU on the remote control.

You only need to enter the Service menu passcode the first time you select

Note that menu after turning on the projector.

White Balance: To remove any trace of color from the white areas of the projected image, choose White Balance from the Service menu and press ENTER.

•Gamma: “Gamma” is a global setting that determines how gray shades are displayed between minimum input (black) and maximum input (white) for all signals. A good gamma setting helps to optimize blacks and whites while ensuring smooth transitions for the “in-between” values utilized in other grays. Unlike “Brightness” and “Contrast” controls, the overall tone of your images can be lightened or darkened without changing the extremes and all images will be more vibrant while still showing good detail in dark areas.

In all but the most unusual situations, the appropriate “Gamma Selection” (see below) will produce accurate colors and a satisfying contrast level. However, it is sometimes necessary to adjust the red, blue and green gamma curves individually. To do this, select Gamma from the White Balance sub-menu and use the left- and right-arrow buttons to manipulate the on-screen slidebars.

•Gain: Use the Gain controls to correct color imbalances in the bright areas of the image. A good way to do this is to use a test pattern consisting mostly of solid white areas, such as an 80 IRE “window” pattern. If the white areas contain traces of red, green or blue, decrease the Gain for that color.

•Offset: Use the Offset controls in the White Balance sub-menu to correct color imbalances in the dark areas of the image. A good way to do this is to use a test pattern consisting mostly of dark gray areas, such as a 30 IRE “window” pattern. If the gray areas contain traces of red, green or blue, decrease the Offset for that color.

•Store Color Temp.4/Store Color Temp.5: When you are finished adjusting the Gamma, Gain and Offset, select Store Color Temp.4 or Store Color Temp.5 to store your settings. To recall them, set the Color Temperature to +4 or +5 in the Image Adjustment menu (refer to Picture Adjust on page 46).

Gamma Selection: The normal gamma setting of 2.2 is correct for almost all signals and conditions. If excess ambient light washes out the image and it becomes difficult or impossible to see details in dark areas, lower the gamma setting to compensate. This will improve contrast while maintaining good details for blacks. Conversely, if the image is washed out and unnatural, with excessive detail in black areas, increase the setting. Again, good gamma improves contrast while maintaining good details for blacks and whites.

56 Vidikron Vision 70 Series Owner’s Operating Manual