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3-3Digital Display Scaler • Operation
Memory presets with no values saved in them are not included in the loop; if preset
2 is empty, the loop sequences from preset 1 to preset 3 when the Input button is
pressed.
As each preset is recalled, the LCD displays the message Input x Memory y,
where x is the input (1 or 2) and y is the preset (1, 2, or 3).
The centering and sizing adjustments are tailored for the selected output rate.
If you change the output rate and then recall a preset for the earlier rate, the
adjustments recalled in the preset have no effect on the video output. However,
if you then change back to the earlier output rate, the affects of the adjustments
appear on the screen.
Picture adjustment buttons
The picture adjustment buttons select individual image adjustments that are
adjusted using the Adjust
(
12
) and Adjust (
13
) knobs. These buttons light when
pressed.
4
Center control button — The Center button selects and deselects the display
centering adjustment. See Picture adjustments in this chapter.
5
Size control button — The Size button selects and deselects the display size
adjustment. See Picture adjustments in this chapter.
6
Brightness/Contrast control button — The Brightness/Contrast button
selects and deselects the display brightness and contrast adjustments. The
brightness adjustment range is from 0 to 127. The contrast adjustment range
is from 0 to 255. See Picture adjustments in this chapter.
7
Zoom control button — The Zoom button selects and deselects the display
zoom adjustment. Zoom works the centering and sizing functions
simultaneously to enlarge a portion of the displayed image. Turning either
Adjust knob clockwise zooms in on the image, and turning either knob
counterclockwise zooms out from the image. See Picture adjustments in this
chapter.
8
Detail control button — The Detail button selects and deselects the display
image detail (sharpness) adjustment. The sharpness adjustment compensates
for long cable runs. The Adjust
knob controls the horizontal filter and the
Adjust
knob controls the vertical filter. The adjustment range for each filter
is 0 to 7. See Picture adjustments in this chapter.
LCD display
9
Status display — The 16-column by 2-line LCD displays configuration menus
and status information. See Front Panel Operations in this chapter for details.
Menu control buttons
10
Menu button — The Menu button enters and moves through the main menu
system in the DDS 402. See Front Panel Operations in this chapter for details.
11
Next button — The Next button steps through the submenus in the DDS 402
menu system. See Front Panel Operations in this chapter for details.
Adjustment knobs
12
Adjust (horizontal) knob — The Adjust knob changes settings when
used in conjunction with the picture adjustment buttons or the menu system.
Rotate this knob to change picture settings when one of the picture
adjustment buttons is selected. In the menu system, rotate this knob to scroll
through menu options and make adjustments.