Extron Electronics DDS 402 - Manual (Page 31)

3-11 Digital Display Scaler • Operation
2. Rotate the Adjust knob or Adjust knob to vary the settings within the
following adjustment ranges:
The Adjust knobs have no mechanical limits to their rotation.
• Center: No ranges are displayed for the Center adjustments. Rather,
observe the display and turn the Adjust knob to adjust
horizontal centering and the Adjust knob to adjust vertical
centering.
• Size: No ranges are displayed for the Size adjustments. Rather, observe
the display and turn the Adjust knob to adjust horizontal size and
the Adjust knob to adjust vertical size.
• Brightness/Contrast: Brightness adjusts from 0 to 64.
Contrast adjusts from 0 to 255.
• Zoom: No ranges are displayed for the Zoom adjustments. Rather,
observe the display and turn either Adjust knob clockwise (to
zoom in) or counterclockwise (to zoom out). The image increases
or decreases in size both the horizontal and vertical dimensions.
• Detail: Horizontal (Horz) adjusts from 0 to 7.
Vertical (Vert) adjusts from 0 to 7.
The DDS 402 picture adjustment functions time-out after 10 seconds; the
adjustments are activated and saved and the LCD returns to the default
display cycle.
3. Repeat steps 1 and 2 for each image adjustment to be made for that input.
Front panel security lockout (executive mode)
The front panel security lockout limits the operation of the Digital Display Scaler
from the front panel. When the scaler’s front panel is locked, all of the front panel
functions are disabled except for Freeze and input selection.
To toggle the security lockout on or off, press and hold the Center and Zoom
buttons simultaneously for approximately two seconds (figure 3-11). The LCD
displays Executive Mode Enabled or Executive Mode Disabled to indicate the
mode. Release the buttons. The LCD also displays Executive Mode Enabled if you
push a locked out button when the scaler is locked.
10 sec.
timeo
u t
Press b oth bu ttons
sim u ltaneo u sly for
2 seconds
Display
Cycle
CENTER ZOOM
Executive Mode
Enabled
Executive Mode
Disabled
Figure 3-11 — Executive mode flowchart