Christie Digital Systems CX67 Input Levels for experienced users only, 15. Input Video Black

Section 3: Operation

“crushed” nor excessively elevated. By default, the projector automatically determines the correct setting according to the type of incoming video signal:

•0 IRE – Select this setting for DVD output with “enhanced black”, SECAM, most PAL standards, and Japanese NTSC.

•7.5 IRE – Select this setting for most NTSC video signals.

Figure 3.15. Input Video Black

NOTE: You can override the setting for some types of video. The control is disabled for other types of video, and also for graphics sources.

Input Levels (for experienced users only)

The projector automatically optimizes input levels for all but the most unusual of sources. Before attempting an input level adjustment make sure brightness and color temperature settings are properly set. It is also recommended that you keep the White Boost option OFF (0).

Figure 3.16. Input Levels

Good RGB or input levels – that is, the drives and black levels for each of the three colors, red, green and blue – ensure that images from analog sources other than decoded video have maximum contrast without crushing black or white. By default (and when performing an Auto Setup from the Main menu), the projector automatically determines the best input levels by monitoring image content and adjusting the controls appropriately. Typically, further adjustment is not required in order to obtain proper black or whites.

AUTO INPUT LEVELS

The Auto Input Levels option is useful when an unusual source is used that may require further color temperature and/or input level adjustment. For the Auto Input Level feature to work you must use a 16-step grey scale test pattern with black on the left and white on the right.

With this option highlighted, press Enter and wait for the six remaining values in the menu to stabilize indicating the process is complete. (Figure 3.16.)

NOTE: It is recommended Contrast and Brightness settings remain at their default when adjusting Auto Input Levels.

RPMX/CX50/CX60/CX67 User’s Manual 3-15