Dell 1708FP User Manual page 18

Push the + button to increase luminance and push the - button to decrease luminance (min 0 ~ max 100).
Contrast adjusts the degree of difference between darkness and lightness on the monitor screen.
Push the + button to increase the contrast and push the - button to decrease the contrast (min 0 ~ max 100).
Positioning: Positioning moves the viewing area around on the monitor screen.
Horizontal
When making changes to either the Horizontal or Vertical settings, no changes occur to the size of the viewing area. The image shifts in
Vertical
response to your selection.
Minimum is 0 (-) and maximum is 100 (+).
Auto Adjust Even though your computer recognizes your monitor on startup, the Auto Adjustment function optimizes the display settings for use
with your particular setup.
Select to activate automatic setup and adjustment. The following dialog appears on a black screen as the monitor self-adjusts to the
current input:
Auto Adjustment allows the monitor to self-adjust to the incoming video signal. After using Auto Adjustment, you can further tune your
monitor by using the Pixel Clock (Coarse) and Phase (Fine) controls under Image Settings.
NOTE: In most cases, Auto Adjust produces the best image for your configuration.
Image The Phase and Pixel Clock adjustments allow you to more closely adjust your monitor to your preference. These settings are accessed
settings: through the main OSD menu, by selecting Image Settings.
Pixel Clock
Use the - and + buttons to make adjustments. (Minimum: 0 ~ Maximum: 100)
(Coarse)
Auto Adjust In Progress