Madrigal Imaging MP-8, MP-9 manual Primary Display Brightness Adjustments, Contrast

OPERATION

•Geometry functions adjust geometric distortions of the display such as its size, keystone, pincushion, bow, linearity, and skew. Access Geometry functions via the Geometry menu – press GEOM on the keypad.

•Convergence is used to align the red, green, and blue color components of the image. It is described in section 3.6, Convergence Registration.

NORMAL

ADJUSTMENT

SEQUENCE

UNADJUSTED

IMAGE

Most adjustment functions, when selected, display a slidebar overlayed on the source image. The slidebar displays the current setting and indicates which arrow keys to use for making the adjustment. Adjustment settings are stored in the current setup memory (Input or Recall). There are two exceptions: 1) If the current setup memory is locked, new adjustment settings are shown but not stored; they are discarded when another setup memory is selected. 2) If ASR is on for the current input and an ASI is performed, the settings are only temporary and are not saved in the current setup memory.

For new images, where much adjustment is required, it is recommended that adjustments be made using the sequence illustrated above. When making picture or geometry adjustments, follow the sequence displayed in the adjustment menu.

Primary

Adjustments

Picture

Adjustments

Geometry

Adjustments

Convergence Registration

FULLY

ADJUSTED

IMAGE

Tip: When making many picture or geometry adjustments, press ENTER after each adjustment to return the cursor back to its previous menu item position.

Primary Display ➤ Brightness

Adjustments

The Brightness function is used to adjust the black level of the image.

To adjust brightness, press BRITE then or . If video or data is displayed with a black background, adjust until the background just disappears (black becomes a very dark grey).

Note: If room lighting changes, it may be necessary to re-adjust brightness.

Contrast

The Contrast function is used to adjust the contrast between the light and dark areas of the display image.

To adjust contrast, press CONT then or . If contrast is set too high, the image loses detail and clarity. If set too low, it may be difficult to distinguish between foreground and background information.

3.17